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Электронный компонент: 74HC245DB

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1.
General description
The 74HC245; 74HCT245 is a high-speed Si-gate CMOS device and is pin compatible
with Low-Power Schottky TTL (LSTTL).
The 74HC245; 74HCT245 is an octal transceiver featuring non-inverting 3-state bus
compatible outputs in both send and receive directions. The 74HC245; 74HCT245
features an output enable input (OE) for easy cascading and a send/receive input (DIR)
for direction control. OE controls the outputs so that the buses are effectively isolated.
The 74HC245; 74HCT245 is similar to the 74HC640; 74HCT640 but has true
(non-inverting) outputs.
2.
Features
s
Octal bidirectional bus interface
s
Non-inverting 3-state outputs
s
Multiple package options
s
Complies with JEDEC standard no. 7A
s
ESD protection:
x
HBM EIA/JESD22-A114-B exceeds 2000 V
x
MM EIA/JESD22-A115-A exceeds 200 V
s
Specified from
-
40
C to +85
C and from
-
40
C to +125
C
3.
Quick reference data
74HC245; 74HCT245
Octal bus tranceiver; 3-state
Rev. 03 -- 31 January 2005
Product data sheet
Table 1:
Quick reference data
GND = 0 V; T
amb
= 25
C; t
r
= t
f
= 6 ns.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Type 74HC245
t
PHL
, t
PLH
propagation delay
An to Bn or Bn to An
C
L
= 15 pF;
V
CC
= 5 V
-
7
-
ns
C
I
input capacitance
-
3.5
-
pF
C
I/O
input/output capacitance
-
10
-
pF
C
PD
power dissipation
capacitance per
transceiver
V
I
= GND to V
CC
[1]
-
30
-
pF
Type 74HCT245
t
PHL
, t
PLH
propagation delay
An to Bn or Bn to An
C
L
= 15 pF;
V
CC
= 5 V
-
10
-
ns
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
2 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
[1]
C
PD
is used to determine the dynamic power dissipation (P
D
in
W):
P
D
= C
PD
V
CC
2
f
i
N +
(C
L
V
CC
2
f
o
) where:
f
i
= input frequency in MHz;
f
o
= output frequency in MHz;
C
L
= output load capacitance in pF;
V
CC
= supply voltage in V;
N = number of inputs switching;
(C
L
V
CC
2
f
o
) = sum of outputs.
4.
Ordering information
C
I
input capacitance
-
3.5
-
pF
C
I/O
input/output capacitance
-
10
-
pF
C
PD
power dissipation
capacitance per
transceiver
V
I
= GND to
V
CC
-
1.5 V
[1]
-
30
-
pF
Table 1:
Quick reference data
...continued
GND = 0 V; T
amb
= 25
C; t
r
= t
f
= 6 ns.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Table 2:
Ordering information
Type number
Package
Temperature range
Name
Description
Version
74HC245N
-
40
C to +125
C
DIP20
plastic dual in-line package; 20 leads (300 mil)
SOT146-1
74HC245D
-
40
C to +125
C
SO20
plastic small outline package; 20 leads;
body width 7.5 mm
SOT163-1
74HC245PW
-
40
C to +125
C
TSSOP20
plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
SOT360-1
74HC245DB
-
40
C to +125
C
SSOP20
plastic shrink small outline package; 20 leads;
body width 5.3 mm
SOT339-1
74HC245BQ
-
40
C to +125
C
DHVQFN20
plastic dual-in-line compatible thermal enhanced
very thin quad flat package no leads; 20 terminals;
body 2.5
4.5
0.85 mm
SOT764-1
74HCT245N
-
40
C to +125
C
DIP20
plastic dual in-line package; 20 leads (300 mil)
SOT146-1
74HCT245D
-
40
C to +125
C
SO20
plastic small outline package; 20 leads;
body width 7.5 mm
SOT163-1
74HCT245PW
-
40
C to +125
C
TSSOP20
plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
SOT360-1
74HCT245DB
-
40
C to +125
C
SSOP20
plastic shrink small outline package; 20 leads;
body width 5.3 mm
SOT339-1
74HCT245BQ
-
40
C to +125
C
DHVQFN20
plastic dual-in-line compatible thermal enhanced
very thin quad flat package no leads; 20 terminals;
body 2.5
4.5
0.85 mm
SOT764-1
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
3 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
5.
Functional diagram
Fig 1.
Logic symbol
Fig 2.
IEC logic symbol
2
1
DIR
18
19
B0
B1
B2
B3
B4
B5
B6
B7
3
17
4
16
5
15
6
14
7
13
8
12
9
A0
A1
A2
A3
A4
A5
A6
A7
11
OE
mna174
17
3
1
19
2
1
16
4
15
5
14
6
13
7
12
8
11
9
18
G3
3EN1
3EN2
2
mna175
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
4 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
6.
Pinning information
6.1 Pinning
6.2 Pin description
(1) The die substrate is attached to this
pad using conductive die attach
material. It can not be used as supply
pin or input
Fig 3.
Pin configuration DIP20, SO20,
SSOP20 and TSSOP20
Fig 4.
Pin configuration DHVQFN20
245
DIR
V
CC
A0
OE
A1
B0
A2
B1
A3
B2
A4
B3
A5
B4
A6
B5
A7
B6
GND
B7
001aac431
1
2
3
4
5
6
7
8
9
10
12
11
14
13
16
15
18
17
20
19
001aac432
245
GND
(1)
Transparent top view
B6
A6
A7
B5
A5
B4
A4
B3
A3
B2
A2
B1
A1
B0
A0
OE
GND
B7
DIR
V
CC
9
12
8
13
7
14
6
15
5
16
4
17
3
18
2
19
10
11
1
20
terminal 1
index area
Table 3:
Pin description
Symbol
Pin
Description
DIR
1
direction control
A0
2
data input/output
A1
3
data input/output
A2
4
data input/output
A3
5
data input/output
A4
6
data input/output
A5
7
data input/output
A6
8
data input/output
A7
9
data input/output
GND
10
ground (0 V)
B7
11
data input/output
B6
12
data input/output
B5
13
data input/output
B4
14
data input/output
B3
15
data input/output
B2
16
data input/output
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
5 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
7.
Functional description
7.1 Function table
[1]
H = HIGH voltage level;
L = LOW voltage level;
X = don't care;
Z = high-impedance OFF-state.
8.
Limiting values
[1]
For DIP20 packages: above 70
C, P
tot
derates linearly with 12 mW/K.
For SO20 packages: above 70
C, P
tot
derates linearly with 8 mW/K.
For SSOP20 and TSSOP20 packages: above 60
C, P
tot
derates linearly with 5.5 mW/K.
For DHVQFN20 packages: above 60
C, P
tot
derates linearly with 4.5 mW/K.
B1
17
data input/output
B0
18
data input/output
OE
19
output enable input (active LOW)
V
CC
20
supply voltage
Table 3:
Pin description
...continued
Symbol
Pin
Description
Table 4:
Function table
[1]
Input
Input/output
OE
DIR
An
Bn
L
L
A = B
input
L
H
input
B = A
H
X
Z
Z
Table 5:
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to
GND (ground = 0 V).
Symbol
Parameter
Conditions
Min
Max
Unit
V
CC
supply voltage
-
0.5
+7
V
I
IK
input diode current
V
I
<
-
0.5 V or V
I
> V
CC
+ 0.5 V
-
20
mA
I
OK
output diode current
V
O
<
-
0.5 V or
V
O
> V
CC
+ 0.5 V
-
20
mA
I
O
output source or sink
current
V
O
=
-
0.5 V to V
CC
+ 0.5 V
-
35
mA
I
CC
, I
GND
V
CC
or GND current
-
70
mA
T
stg
storage temperature
-
65
+150
C
P
tot
total power dissipation
[1]
DIP20 package
-
750
mW
SO20, SSOP20,
TSSOP20 and
DHVQFN20 packages
-
500
mW
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
6 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
9.
Recommended operating conditions
10. Static characteristics
Table 6:
Recommended operating conditions
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Type 74HC245
V
CC
supply voltage
2.0
5.0
6.0
V
V
I
input voltage
0
-
V
CC
V
V
O
output voltage
0
-
V
CC
V
t
r
, t
f
input rise and fall
times
V
CC
= 2.0 V
-
-
1000
ns
V
CC
= 4.5 V
-
6.0
500
ns
V
CC
= 6.0 V
-
-
400
ns
T
amb
ambient temperature
-
40
-
+125
C
Type 74HCT245
V
CC
supply voltage
4.5
5.0
5.5
V
V
I
input voltage
0
-
V
CC
V
V
O
output voltage
0
-
V
CC
V
t
r
, t
f
input rise and fall
times
V
CC
= 4.5 V
-
6.0
500
ns
T
amb
ambient temperature
-
40
-
+125
C
Table 7:
Static characteristics type 74HC245
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
T
amb
= 25
C
V
IH
HIGH-level input voltage
V
CC
= 2.0 V
1.5
1.2
-
V
V
CC
= 4.5 V
3.15
2.4
-
V
V
CC
= 6.0 V
4.2
3.2
-
V
V
IL
LOW-level input voltage
V
CC
= 2.0 V
-
0.8
0.5
V
V
CC
= 4.5 V
-
2.1
1.35
V
V
CC
= 6.0 V
-
2.8
1.8
V
V
OH
HIGH-level output voltage
V
I
= V
IH
or V
IL
I
O
=
-
20
A; V
CC
= 2.0 V
1.9
2.0
-
V
I
O
=
-
20
A; V
CC
= 4.5 V
4.4
4.5
-
V
I
O
=
-
20
A; V
CC
= 6.0 V
5.9
6.0
-
V
I
O
=
-
6.0 mA; V
CC
= 4.5 V
3.98
4.32
-
V
I
O
=
-
7.8 mA; V
CC
= 6.0 V
5.48
5.81
-
V
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
7 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
V
OL
LOW-level output voltage
V
I
= V
IH
or V
IL
I
O
= 20
A; V
CC
= 2.0 V
-
0
0.1
V
I
O
= 20
A; V
CC
= 4.5 V
-
0
0.1
V
I
O
= 20
A; V
CC
= 6.0 V
-
0
0.1
V
I
O
= 6.0 mA; V
CC
= 4.5 V
-
0.15
0.26
V
I
O
= 7.8 mA; V
CC
= 6.0 V
-
0.16
0.26
V
I
LI
input leakage current
V
I
= V
CC
or GND; V
CC
= 6.0 V
-
-
0.1
A
I
OZ
OFF-state output current
V
I
= V
IH
or V
IL
; V
O
= V
CC
or GND;
V
CC
= 6.0 V
-
-
0.5
A
I
CC
quiescent supply current
V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 6.0 V
-
-
8.0
A
C
I
input capacitance
-
3.5
-
pF
C
I/O
input/output capacitance
-
10
-
pF
T
amb
=
-
40
C to +85
C
V
IH
HIGH-level input voltage
V
CC
= 2.0 V
1.5
-
-
V
V
CC
= 4.5 V
3.15
-
-
V
V
CC
= 6.0 V
4.2
-
-
V
V
IL
LOW-level input voltage
V
CC
= 2.0 V
-
-
0.5
V
V
CC
= 4.5 V
-
-
1.35
V
V
CC
= 6.0 V
-
-
1.8
V
V
OH
HIGH-level output voltage
V
I
= V
IH
or V
IL
I
O
=
-
20
A; V
CC
= 2.0 V
1.9
-
-
V
I
O
=
-
20
A; V
CC
= 4.5 V
4.4
-
-
V
I
O
=
-
20
A; V
CC
= 6.0 V
5.9
-
-
V
I
O
=
-
6.0 mA; V
CC
= 4.5 V
3.84
-
-
V
I
O
=
-
7.8 mA; V
CC
= 6.0 V
5.34
-
-
V
V
OL
LOW-level output voltage
V
I
= V
IH
or V
IL
I
O
= 20
A; V
CC
= 2.0 V
-
-
0.1
V
I
O
= 20
A; V
CC
= 4.5 V
-
-
0.1
V
I
O
= 20
A; V
CC
= 6.0 V
-
-
0.1
V
I
O
= 6.0 mA; V
CC
= 4.5 V
-
-
0.33
V
I
O
= 7.8 mA; V
CC
= 6.0 V
-
-
0.33
V
I
LI
input leakage current
V
I
= V
CC
or GND; V
CC
= 6.0 V
-
-
1.0
A
I
OZ
OFF-state output current
V
I
= V
IH
or V
IL
; V
O
= V
CC
or GND;
V
CC
= 6.0 V
-
-
5.0
A
I
CC
quiescent supply current
V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 6.0 V
-
-
80
A
T
amb
=
-
40
C to +125
C
V
IH
HIGH-level input voltage
V
CC
= 2.0 V
1.5
-
-
V
V
CC
= 4.5 V
3.15
-
-
V
V
CC
= 6.0 V
4.2
-
-
V
Table 7:
Static characteristics type 74HC245
...continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
8 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
V
IL
LOW-level input voltage
V
CC
= 2.0 V
-
-
0.5
V
V
CC
= 4.5 V
-
-
1.35
V
V
CC
= 6.0 V
-
-
1.8
V
V
OH
HIGH-level output voltage
V
I
= V
IH
or V
IL
-
I
O
=
-
20
A; V
CC
= 2.0 V
1.9
-
-
V
I
O
=
-
20
A; V
CC
= 4.5 V
4.4
-
-
V
I
O
=
-
20
A; V
CC
= 6.0 V
5.9
-
-
V
I
O
=
-
6.0 mA; V
CC
= 4.5 V
3.7
-
-
V
I
O
=
-
7.8 mA; V
CC
= 6.0 V
5.2
-
-
V
V
OL
LOW-level output voltage
V
I
= V
IH
or V
IL
-
I
O
= 20
A; V
CC
= 2.0 V
-
-
0.1
V
I
O
= 20
A; V
CC
= 4.5 V
-
-
0.1
V
I
O
= 20
A; V
CC
= 6.0 V
-
-
0.1
V
I
O
= 6.0 mA; V
CC
= 4.5 V
-
-
0.4
V
I
O
= 7.8 mA; V
CC
= 6.0 V
-
-
0.4
V
I
LI
input leakage current
V
I
= V
CC
or GND; V
CC
= 6.0 V
-
-
1.0
A
I
OZ
OFF-state output current
V
I
= V
IH
or V
IL
; V
O
= V
CC
or GND;
V
CC
= 6.0 V
-
-
10.0
A
I
CC
quiescent supply current
V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 6.0 V
-
-
160
A
Table 7:
Static characteristics type 74HC245
...continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Table 8:
Static characteristics type 74HCT245
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
T
amb
= 25
C
V
IH
HIGH-level input voltage
V
CC
= 4.5 V to 5.5 V
2.0
1.6
-
V
V
IL
LOW-level input voltage
V
CC
= 4.5 V to 5.5 V
-
1.2
0.8
V
V
OH
HIGH-level output voltage
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
I
O
=
-
20
A
4.4
4.5
-
V
I
O
=
-
6 mA
3.98
4.32
-
V
V
OL
LOW-level output voltage
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
I
O
= 20
A
-
0
0.1
V
I
O
= 6.0 mA
-
0.15
0.26
V
I
LI
input leakage current
V
I
= V
CC
or GND; V
CC
= 5.5 V
-
-
0.1
A
I
OZ
OFF-state output current
V
I
= V
IH
or V
IL
; V
CC
= 5.5 V;
V
O
= V
CC
or GND per input pin;
other inputs at V
CC
or GND; I
O
= 0 A
-
-
0.5
A
I
CC
quiescent supply current
V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 5.5 V
-
-
8.0
A
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
9 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
I
CC
additional quiescent supply
current per input pin
V
I
= V
CC
-
2.1 V; other inputs at
V
I
= V
CC
or GND;
V
CC
= 4.5 V to 5.5 V; I
O
= 0 A
An or Bn inputs
-
40
144
A
OE input
-
150
540
A
DIR input
-
90
324
A
C
I
input capacitance
-
3.5
-
pF
C
I/O
input/output capacitance
-
10
-
pF
T
amb
=
-
40
C to +85
C
V
IH
HIGH-level input voltage
V
CC
= 4.5 V to 5.5 V
2.0
-
-
V
V
IL
LOW-level input voltage
V
CC
= 4.5 V to 5.5 V
-
-
0.8
V
V
OH
HIGH-level output voltage
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
I
O
=
-
20
A
4.4
-
-
V
I
O
=
-
6 mA
3.84
-
-
V
V
OL
LOW-level output voltage
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
I
O
= 20
A
-
-
0.1
V
I
O
= 6.0 mA
-
-
0.33
V
I
LI
input leakage current
V
I
= V
CC
or GND; V
CC
= 5.5 V
-
-
1.0
A
I
OZ
OFF-state output current
V
I
= V
IH
or V
IL
; V
CC
= 5.5 V;
V
O
= V
CC
or GND per input pin;
other inputs at V
CC
or GND; I
O
= 0 A
-
-
5.0
A
I
CC
quiescent supply current
V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 5.5 V
-
-
80
A
I
CC
additional quiescent supply
current per input pin
V
I
= V
CC
-
2.1 V; other inputs at
V
I
= V
CC
or GND;
V
CC
= 4.5 V to 5.5 V; I
O
= 0 A
An or Bn inputs
-
-
180
A
OE input
-
-
675
A
DIR input
-
-
405
A
T
amb
=
-
40
C to +125
C
V
IH
HIGH-level input voltage
V
CC
= 4.5 V to 5.5 V
2.0
-
-
V
V
IL
LOW-level input voltage
V
CC
= 4.5 V to 5.5 V
-
-
0.8
V
V
OH
HIGH-level output voltage
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
I
O
=
-
20
A
4.4
-
-
V
I
O
=
-
6 mA
3.7
-
-
V
V
OL
LOW-level output voltage
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
I
O
= 20
A
-
-
0.1
V
I
O
= 6.0 mA
-
-
0.4
V
I
LI
input leakage current
V
I
= V
CC
or GND; V
CC
= 5.5 V
-
-
1.0
A
I
OZ
OFF-state output current
V
I
= V
IH
or V
IL
; V
CC
= 5.5 V;
V
O
= V
CC
or GND per input pin;
other inputs at V
CC
or GND; I
O
= 0 A
-
-
10
A
Table 8:
Static characteristics type 74HCT245
...continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
10 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
11. Dynamic characteristics
I
CC
quiescent supply current
V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 5.5 V
-
-
160
A
I
CC
additional quiescent supply
current per input pin
V
I
= V
CC
-
2.1 V; other inputs at
V
I
= V
CC
or GND;
V
CC
= 4.5 V to 5.5 V; I
O
= 0 A
An or Bn inputs
-
-
196
A
OE input
-
-
735
A
DIR input
-
-
441
A
Table 8:
Static characteristics type 74HCT245
...continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Table 9:
Dynamic characteristics type 74HC245
GND = 0 V; test circuit see
Figure 7
.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
T
amb
= 25
C
t
PHL
, t
PLH
propagation delay An to Bn or Bn
to An
see
Figure 5
V
CC
= 2.0 V
-
25
90
ns
V
CC
= 4.5 V
-
9
18
ns
V
CC
= 5.0 V; C
L
= 15 pF
-
7
-
ns
V
CC
= 6.0 V
-
7
15
ns
t
PZH
, t
PZL
3-state output enable time OE to
An or OE to Bn
see
Figure 6
V
CC
= 2.0 V
-
30
150
ns
V
CC
= 4.5 V
-
11
30
ns
V
CC
= 6.0 V
-
9
26
ns
t
PHZ
, t
PLZ
3-state output disable time OE to
An or OE to Bn
see
Figure 6
V
CC
= 2.0 V
-
41
150
ns
V
CC
= 4.5 V
-
15
30
ns
V
CC
= 6.0 V
-
12
26
ns
t
THL
, t
TLH
output transition time
see
Figure 5
V
CC
= 2.0 V
-
14
60
ns
V
CC
= 4.5 V
-
5
12
ns
V
CC
= 6.0 V
-
4
10
ns
C
PD
power dissipation capacitance
per transceiver
V
I
= GND to V
CC
[1]
-
30
-
pF
T
amb
=
-
40
C to +85
C
t
PHL
, t
PLH
propagation delay An to Bn or Bn
to An
see
Figure 5
V
CC
= 2.0 V
-
-
115
ns
V
CC
= 4.5 V
-
-
23
ns
V
CC
= 6.0 V
-
-
20
ns
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
11 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
[1]
C
PD
is used to determine the dynamic power dissipation (P
D
in
W):
P
D
= C
PD
V
CC
2
f
i
N +
(C
L
V
CC
2
f
o
) where:
f
i
= input frequency in MHz;
f
o
= output frequency in MHz;
C
L
= output load capacitance in pF;
V
CC
= supply voltage in V;
N = number of inputs switching;
(C
L
V
CC
2
f
o
) = sum of outputs.
t
PZH
, t
PZL
3-state output enable time OE to
An or OE to Bn
see
Figure 6
V
CC
= 2.0 V
-
-
190
ns
V
CC
= 4.5 V
-
-
38
ns
V
CC
= 6.0 V
-
-
33
ns
t
PHZ
, t
PLZ
3-state output disable time OE to
An or OE to Bn
see
Figure 6
V
CC
= 2.0 V
-
-
190
ns
V
CC
= 4.5 V
-
-
38
ns
V
CC
= 6.0 V
-
-
33
ns
t
THL
, t
TLH
output transition time
see
Figure 5
V
CC
= 2.0 V
-
-
75
ns
V
CC
= 4.5 V
-
-
15
ns
V
CC
= 6.0 V
-
-
13
ns
T
amb
=
-
40
C to +125
C
t
PHL
, t
PLH
propagation delay An to Bn or Bn
to An
see
Figure 5
V
CC
= 2.0 V
-
-
135
ns
V
CC
= 4.5 V
-
-
27
ns
V
CC
= 6.0 V
-
-
23
ns
t
PZH
, t
PZL
3-state output enable time OE to
An or OE to Bn
see
Figure 6
V
CC
= 2.0 V
-
-
225
ns
V
CC
= 4.5 V
-
-
45
ns
V
CC
= 6.0 V
-
-
38
ns
t
PHZ
, t
PLZ
3-state output disable time OE to
An or OE to Bn
see
Figure 6
V
CC
= 2.0 V
-
-
225
ns
V
CC
= 4.5 V
-
-
45
ns
V
CC
= 6.0 V
-
-
38
ns
t
THL
, t
TLH
output transition time
see
Figure 5
V
CC
= 2.0 V
-
-
90
ns
V
CC
= 4.5 V
-
-
18
ns
V
CC
= 6.0 V
-
-
15
ns
Table 9:
Dynamic characteristics type 74HC245
...continued
GND = 0 V; test circuit see
Figure 7
.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
12 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
[1]
C
PD
is used to determine the dynamic power dissipation (P
D
in
W):
P
D
= C
PD
V
CC
2
f
i
N +
(C
L
V
CC
2
f
o
) where:
f
i
= input frequency in MHz;
f
o
= output frequency in MHz;
C
L
= output load capacitance in pF;
V
CC
= supply voltage in V;
N = number of inputs switching;
(C
L
V
CC
2
f
o
) = sum of outputs.
Table 10:
Dynamic characteristics type 74HCT245
GND = 0 V; test circuit see
Figure 7
.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
T
amb
= 25
C
t
PHL
, t
PLH
propagation delay An to Bn or Bn
to An
see
Figure 5
V
CC
= 4.5 V
-
12
22
ns
V
CC
= 5.0 V; C
L
= 15 pF
-
10
-
ns
t
PZH
, t
PZL
3-state output enable time OE to
An or OE to Bn
V
CC
= 4.5 V; see
Figure 6
-
16
30
ns
t
PHZ
, t
PLZ
3-state output disable time OE to
An or OE to Bn
V
CC
= 4.5 V; see
Figure 6
-
16
30
ns
t
THL
, t
TLH
output transition time
V
CC
= 4.5 V; see
Figure 5
-
5
12
ns
C
PD
power dissipation capacitance
per transceiver
V
I
= GND to V
CC
-
1.5 V
[1]
-
30
-
pF
T
amb
=
-
40
C to +85
C
t
PHL
, t
PLH
propagation delay An to Bn or Bn
to An
V
CC
= 4.5 V; see
Figure 5
-
-
28
ns
t
PZH
, t
PZL
3-state output enable time OE to
An or OE to Bn
V
CC
= 4.5 V; see
Figure 6
-
-
38
ns
t
PHZ
, t
PLZ
3-state output disable time OE to
An or OE to Bn
V
CC
= 4.5 V; see
Figure 6
-
-
38
ns
t
THL
, t
TLH
output transition time
V
CC
= 4.5 V; see
Figure 5
-
-
15
ns
T
amb
=
-
40
C to +125
C
t
PHL
, t
PLH
propagation delay An to Bn or Bn
to An
V
CC
= 4.5 V; see
Figure 5
-
-
33
ns
t
PZH
, t
PZL
3-state output enable time OE to
An or OE to Bn
V
CC
= 4.5 V; see
Figure 6
-
-
45
ns
t
PHZ
, t
PLZ
3-state output disable time OE to
An or OE to Bn
V
CC
= 4.5 V; see
Figure 6
-
-
45
ns
t
THL
, t
TLH
output transition time
V
CC
= 4.5 V; see
Figure 5
-
-
18
ns
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
13 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
12. Waveforms
Measurement points are given in
Table 11
.
V
OL
and V
OH
are typical voltage output drop that occur with the output load.
Fig 5.
Input (An, Bn) to output (Bn, An) propagation delays and output transition times
Measurement points are given in
Table 11
.
V
OL
and V
OH
are typical voltage output drop that occur with the output load.
Fig 6.
3-state output enable and disable times
Table 11:
Measurement points
Type
Input
Output
V
M
V
M
74HC245
0.5V
CC
0.5V
CC
74HCT245
1.3 V
1.3 V
001aac433
t
PLH
t
PHL
VM
V
M
90 %
10 %
V
M
V
M
Bn, An output
An, Bn input
V
I
GND
V
OH
V
OL
t
TLH
t
THL
001aac479
t
PLZ
t
PHZ
outputs
disabled
outputs
enabled
90 %
10 %
outputs
enabled
OE input
V
I
V
CC
V
OL
V
OH
GND
GND
V
M
t
PZL
t
PZH
V
M
V
M
output
LOW-to-OFF
OFF-to-LOW
output
HIGH-to-OFF
OFF-to-HIGH
t
r
t
f
90 %
10 %
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
14 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
Test data is given in
Table 12
.
Definitions test circuit:
R
T
= Termination resistance should be equal to output impedance Z
o
of the pulse generator.
C
L
= Load capacitance including jig and probe capacitance.
R
L
= Load resistor.
Fig 7.
Load circuitry for switching times
Table 12:
Test data
Type
Input
Test
V
I
t
r
, t
f
t
PHL
, t
PLH
t
PZH
, t
PHZ
t
PZL
, t
PLZ
74HC245
V
CC
6 ns
open
GND
V
CC
74HCT245
3 V
6 ns
open
GND
V
CC
mgk563
D.U.T
V
CC
V
CC
V
I
V
O
R
T
R
L
= 1 k
C
L
50 pF
open
PULSE
GENERATOR
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
15 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
13. Package outline
Fig 8.
Package outline SOT146-1 (DIP20)
UNIT
A
max.
1
2
b
1
c
D
E
e
M
H
L
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC
JEDEC
JEITA
mm
inches
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
SOT146-1
99-12-27
03-02-13
A
min.
A
max.
b
Z
max.
w
M
E
e
1
1.73
1.30
0.53
0.38
0.36
0.23
26.92
26.54
6.40
6.22
3.60
3.05
0.254
2.54
7.62
8.25
7.80
10.0
8.3
2
4.2
0.51
3.2
0.068
0.051
0.021
0.015
0.014
0.009
1.060
1.045
0.25
0.24
0.14
0.12
0.01
0.1
0.3
0.32
0.31
0.39
0.33
0.078
0.17
0.02
0.13
SC-603
MS-001
M
H
c
(e )
1
M
E
A
L
seating plane
A
1
w
M
b
1
e
D
A
2
Z
20
1
11
10
b
E
pin 1 index
0
5
10 mm
scale
Note
1. Plastic or metal protrusions of 0.25 mm (0.01 inch) maximum per side are not included.
(1)
(1)
(1)
DIP20: plastic dual in-line package; 20 leads (300 mil)
SOT146-1
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
16 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
Fig 9.
Package outline SOT163-1 (SO20)
UNIT
A
max.
A
1
A
2
A
3
b
p
c
D
(1)
E
(1)
(1)
e
H
E
L
L
p
Q
Z
y
w
v
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC
JEDEC
JEITA
mm
inches
2.65
0.3
0.1
2.45
2.25
0.49
0.36
0.32
0.23
13.0
12.6
7.6
7.4
1.27
10.65
10.00
1.1
1.0
0.9
0.4
8
0
o
o
0.25
0.1
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
Note
1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included.
1.1
0.4
SOT163-1
10
20
w
M
b
p
detail X
Z
e
11
1
D
y
0.25
075E04
MS-013
pin 1 index
0.1
0.012
0.004
0.096
0.089
0.019
0.014
0.013
0.009
0.51
0.49
0.30
0.29
0.05
1.4
0.055
0.419
0.394
0.043
0.039
0.035
0.016
0.01
0.25
0.01
0.004
0.043
0.016
0.01
0
5
10 mm
scale
X
A
A
1
A
2
H
E
L
p
Q
E
c
L
v
M
A
(A )
3
A
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
99-12-27
03-02-19
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
17 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
Fig 10. Package outline SOT339-1 (SSOP20)
UNIT
A
1
A
2
A
3
b
p
c
D
(1)
E
(1)
e
H
E
L
L
p
Q
(1)
Z
y
w
v
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC
JEDEC
JEITA
mm
0.21
0.05
1.80
1.65
0.38
0.25
0.20
0.09
7.4
7.0
5.4
5.2
0.65
7.9
7.6
0.9
0.7
0.9
0.5
8
0
o
o
0.13
1.25
0.2
0.1
DIMENSIONS (mm are the original dimensions)
Note
1. Plastic or metal protrusions of 0.2 mm maximum per side are not included.
1.03
0.63
SOT339-1
MO-150
99-12-27
03-02-19
X
w
M
A
A
1
A
2
b
p
D
H
E
L
p
Q
detail X
E
Z
e
c
L
v
M
A
(A )
3
A
1
10
20
11
y
0.25
pin 1 index
0
2.5
5 mm
scale
SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm
SOT339-1
A
max.
2
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
18 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
Fig 11. Package outline SOT360-1 (TSSOP20)
UNIT
A
1
A
2
A
3
b
p
c
D
(1)
E
(2)
(1)
e
H
E
L
L
p
Q
Z
y
w
v
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC
JEDEC
JEITA
mm
0.15
0.05
0.95
0.80
0.30
0.19
0.2
0.1
6.6
6.4
4.5
4.3
0.65
6.6
6.2
0.4
0.3
0.5
0.2
8
0
o
o
0.13
0.1
0.2
1
DIMENSIONS (mm are the original dimensions)
Notes
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.
0.75
0.50
SOT360-1
MO-153
99-12-27
03-02-19
w
M
b
p
D
Z
e
0.25
1
10
20
11
pin 1 index
A
A
1
A
2
L
p
Q
detail X
L
(A )
3
H
E
E
c
v
M
A
X
A
y
0
2.5
5 mm
scale
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm
SOT360-1
A
max.
1.1
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
19 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
Fig 12. Package outline SOT764-1 (DHVQFN20)
terminal 1
index area
0.5
1
A1
Eh
b
UNIT
y
e
0.2
c
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC
JEDEC
JEITA
mm
4.6
4.4
Dh
3.15
2.85
y1
2.6
2.4
1.15
0.85
e1
3.5
0.30
0.18
0.05
0.00
0.05
0.1
DIMENSIONS (mm are the original dimensions)
SOT764-1
MO-241
- - -
- - -
0.5
0.3
L
0.1
v
0.05
w
0
2.5
5 mm
scale
SOT764-1
DHVQFN20: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads;
20 terminals; body 2.5 x 4.5 x 0.85 mm
A
(1)
max.
A
A1
c
detail X
y
y1 C
e
L
Eh
Dh
e
e1
b
2
9
19
12
11
10
1
20
X
D
E
C
B
A
terminal 1
index area
A
C
C
B
v
M
w
M
E
(1)
Note
1. Plastic or metal protrusions of 0.075 mm maximum per side are not included.
D
(1)
02-10-17
03-01-27
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
20 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
14. Revision history
Table 13:
Revision history
Document ID
Release
date
Data sheet status
Change
notice
Doc. number
Supersedes
74HC_HCT245_3
20050131
Product data sheet
-
9397 750 14502
74HC_HCT245_CNV_2
Modifications:
The format of this data sheet is redesigned to comply with the new presentation and
information standard of Philips Semiconductors
Section 4 "Ordering information"
,
Section 6 "Pinning information"
and
Section 13 "Package
outline"
are modified to include the DHVQFN20 package.
74HC_HCT245_CNV_2
19930930
Product specification -
-
-
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 -- 31 January 2005
21 of 22
15. Data sheet status
[1]
Please consult the most recently issued data sheet before initiating or completing a design.
[2]
The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at
URL http://www.semiconductors.philips.com.
[3]
For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.
16. Definitions
Short-form specification -- The data in a short-form specification is
extracted from a full data sheet with the same type number and title. For
detailed information see the relevant data sheet or data handbook.
Limiting values definition -- Limiting values given are in accordance with
the Absolute Maximum Rating System (IEC 60134). Stress above one or
more of the limiting values may cause permanent damage to the device.
These are stress ratings only and operation of the device at these or at any
other conditions above those given in the Characteristics sections of the
specification is not implied. Exposure to limiting values for extended periods
may affect device reliability.
Application information -- Applications that are described herein for any
of these products are for illustrative purposes only. Philips Semiconductors
make no representation or warranty that such applications will be suitable for
the specified use without further testing or modification.
17. Disclaimers
Life support -- These products are not designed for use in life support
appliances, devices, or systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips Semiconductors
customers using or selling these products for use in such applications do so
at their own risk and agree to fully indemnify Philips Semiconductors for any
damages resulting from such application.
Right to make changes -- Philips Semiconductors reserves the right to
make changes in the products - including circuits, standard cells, and/or
software - described or contained herein in order to improve design and/or
performance. When the product is in full production (status `Production'),
relevant changes will be communicated via a Customer Product/Process
Change Notification (CPCN). Philips Semiconductors assumes no
responsibility or liability for the use of any of these products, conveys no
license or title under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that these products are
free from patent, copyright, or mask work right infringement, unless otherwise
specified.
18. Contact information
For additional information, please visit: http://www.semiconductors.philips.com
For sales office addresses, send an email to: sales.addresses@www.semiconductors.philips.com
Level
Data sheet status
[1]
Product status
[2] [3]
Definition
I
Objective data
Development
This data sheet contains data from the objective specification for product development. Philips
Semiconductors reserves the right to change the specification in any manner without notice.
II
Preliminary data
Qualification
This data sheet contains data from the preliminary specification. Supplementary data will be published
at a later date. Philips Semiconductors reserves the right to change the specification without notice, in
order to improve the design and supply the best possible product.
III
Product data
Production
This data sheet contains data from the product specification. Philips Semiconductors reserves the
right to make changes at any time in order to improve the design, manufacturing and supply. Relevant
changes will be communicated via a Customer Product/Process Change Notification (CPCN).
Koninklijke Philips Electronics N.V. 2005
All rights are reserved. Reproduction in whole or in part is prohibited without the prior
written consent of the copyright owner. The information presented in this document does
not form part of any quotation or contract, is believed to be accurate and reliable and may
be changed without notice. No liability will be accepted by the publisher for any
consequence of its use. Publication thereof does not convey nor imply any license under
patent- or other industrial or intellectual property rights.
Date of release: 31 January 2005
Document number: 9397 750 14502
Published in The Netherlands
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
19. Contents
1
General description . . . . . . . . . . . . . . . . . . . . . . 1
2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3
Quick reference data . . . . . . . . . . . . . . . . . . . . . 1
4
Ordering information . . . . . . . . . . . . . . . . . . . . . 2
5
Functional diagram . . . . . . . . . . . . . . . . . . . . . . 3
6
Pinning information . . . . . . . . . . . . . . . . . . . . . . 4
6.1
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
6.2
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
7
Functional description . . . . . . . . . . . . . . . . . . . 5
7.1
Function table . . . . . . . . . . . . . . . . . . . . . . . . . . 5
8
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 5
9
Recommended operating conditions. . . . . . . . 6
10
Static characteristics. . . . . . . . . . . . . . . . . . . . . 6
11
Dynamic characteristics . . . . . . . . . . . . . . . . . 10
12
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
13
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 15
14
Revision history . . . . . . . . . . . . . . . . . . . . . . . . 20
15
Data sheet status . . . . . . . . . . . . . . . . . . . . . . . 21
16
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
17
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
18
Contact information . . . . . . . . . . . . . . . . . . . . 21