2003 Jul 10
2
Philips Semiconductors
Product specification
Octal bus transceiver; 3-state
74ALVC245
FEATURES
Wide supply voltage range from 1.65 to 3.6 V
Complies with JEDEC standard:
JESD8-7 (1.65 to 1.95 V)
JESD8-5 (2.3 to 2.7 V)
JESD8B/JESD36 (2.7 to 3.6 V).
3.6 V tolerant inputs/outputs
CMOS LOW power consumption
Direct interface with TTL levels (2.7 to 3.6 V)
Power-down mode
Latch-up performance exceeds 250 mA
ESD protection:
HBM EIA/JESD22-A114-A exceeds 2000 V
MM EIA/JESD22-A115-A exceeds 200 V.
DESCRIPTION
The 74ALVC245 is a high-performance, low-power,
low-voltage, Si-gate CMOS device and superior to most
advanced CMOS compatible TTL families.
The 74ALVC245 is an octal transceiver featuring
non-inverting 3-state bus compatible outputs in both send
and receive directions. The 74ALVC245 features an
output enable input (OE) for easy cascading and
send/receive input (DIR) for direction control. OE controls
the outputs, so that the buses are effectively isolated.
QUICK REFERENCE DATA
GND = 0 V; T
amb
= 25
C.
Notes
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 Volts;
N = total load switching outputs;
(C
L
V
CC
2
f
o
) = sum of the outputs.
2. The condition is V
I
= GND to V
CC
.
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
t
PHL
/t
PLH
propagation delay inputs An to Bn;
Bn to An
V
CC
= 1.8 V; C
L
= 30 pF; R
L
= 1 k
2.7
ns
V
CC
= 2.5 V; C
L
= 30 pF; R
L
= 500
2.1
ns
V
CC
= 2.7 V; C
L
= 50 pF; R
L
= 500
3.0
ns
V
CC
= 3.3 V; C
L
= 50 pF; R
L
= 500
2.3
ns
C
I
input capacitance
3.5
pF
C
I/O
input/output capacitance
3.5
pF
C
PD
power dissipation capacitance per buffer
V
CC
= 3.3 V; notes 1 and 2
outputs enable
25
pF
outputs disabled
1
pF
2003 Jul 10
3
Philips Semiconductors
Product specification
Octal bus transceiver; 3-state
74ALVC245
ORDERING INFORMATION
FUNCTION TABLE
See note 1.
Note
1. H = HIGH voltage level;
L = LOW voltage level;
X = don't care;
Z = high-impedance OFF-state.
TYPE NUMBER
PACKAGE
PINS
PACKAGE
MATERIAL
CODE
74ALVC245D
20
SO20
plastic
SOT163-1
74ALVC245PW
20
TSSOP20
plastic
SOT360-1
INPUT
INPUT/OUTPUT
OE
DIR
An
Bn
L
L
A = B
input
L
H
input
B = A
H
X
Z
Z
PINNING
PIN
SYMBOL
DESCRIPTION
1
DIR
direction control
2
A0
data input/output
3
A1
data input/output
4
A2
data input/output
5
A3
data input/output
6
A4
data input/output
7
A5
data input/output
8
A6
data input/output
9
A7
data input/output
10
GND
ground (0 V)
11
B7
data input/output
12
B6
data input/output
13
B5
data input/output
14
B4
data input/output
15
B3
data input/output
16
B2
data input/output
17
B1
data input/output
18
B0
data input/output
19
OE
output enable input (active
LOW)
20
V
CC
supply voltage
PIN
SYMBOL
DESCRIPTION
2003 Jul 10
4
Philips Semiconductors
Product specification
Octal bus transceiver; 3-state
74ALVC245
handbook, halfpage
DIR
A0
A1
A2
A3
A4
A5
A6
A7
GND
VCC
OE
B0
B1
B3
B4
B2
B5
B6
B7
1
2
3
4
5
6
7
8
9
10
11
12
20
19
18
17
16
15
14
13
245
MNA173
Fig.1 Pin configuration..
handbook, halfpage
17
3
1
19
2
1
16
4
15
5
14
6
13
7
12
8
11
9
18
G3
3EN1
3EN2
2
MNA175
Fig.2 IEE/IEC logic symbol.
handbook, halfpage
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
Fig.3 Logic symbol.
2003 Jul 10
5
Philips Semiconductors
Product specification
Octal bus transceiver; 3-state
74ALVC245
RECOMMENDED OPERATING CONDITIONS
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134); voltages are referenced to GND (ground = 0 V).
Notes
1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. When V
CC
= 0 V (Power-down mode), the output voltage can be 3.6 V in normal operation.
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
V
CC
supply voltage
1.65
3.6
V
V
I
input voltage
0
3.6
V
V
O
output voltage
V
CC
= 1.65 to 3.6 V; enable mode 0
V
CC
V
V
CC
= 1.65 to 3.6 V; disable mode 0
3.6
V
V
CC
= 0 V; Power-down mode
0
3.6
V
T
amb
operating ambient temperature
-
40
+85
C
t
r
, t
f
input rise and fall times
V
CC
= 1.65 to 2.7 V
0
20
ns/V
V
CC
= 2.7 to 3.6 V
0
10
ns/V
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
V
CC
supply voltage
-
0.5
+4.6
V
I
IK
input diode current
V
I
< 0
-
-
50
mA
V
I
input voltage
-
0.5
+4.6
V
I
OK
output diode current
V
O
> V
CC
or V
O
< 0
-
50
mA
V
O
output voltage
enable mode; notes 1 and 2
-
0.5
V
CC
+ 0.5
V
disable mode
-
0.5
+4.6
V
Power-down mode; note 2
-
0.5
+4.6
V
I
O
output source or sink current
V
O
= 0 to V
CC
-
50
mA
I
GND
, I
CC
V
CC
or GND current
-
100
mA
T
stg
storage temperature
-
65
+150
C
P
tot
power dissipation
SO20 package
above 70
C derate linearly with
8 mW/K
-
500
mW
TSSOP20 package
above 60
C derate linearly with
5.5 mW/K
-
500
mW
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