Philips
Semiconductors
74LVT16245B
3.3V ABT 16-bit transceiver (3-State)
Pproduct specification
Supersedes data of 1994 May 23
IC23 Data Handbook
1998 Feb 19
INTEGRATED CIRCUITS
Philips Semiconductors
Product specification
74LVT16245B
3.3V 16-bit transceiver (3-State)
2
1998 Feb 19
853-1753 18990
FEATURES
16-bit bidirectional bus interface
3-State buffers
Output capability: +64mA/-32mA
TTL input and output switching levels
Input and output interface capability to systems at 5V supply
Bus-hold data inputs eliminate the need for external pull-up
resistors to hold unused inputs
Live insertion/extraction permitted
Power-up 3-State
No bus current loading when output is tied to 5V bus
Latch-up protection exceeds 500mA per JEDEC Std 17
ESD protection exceeds 2000V per MIL STD 883 Method 3015
and 200V per Machine Model
DESCRIPTION
The 74LVT16245B is a high-performance BiCMOS product
designed for V
CC
operation at 3.3V.
This device is a 16-bit transceiver featuring non-inverting 3-State
bus compatible outputs in both send and receive directions. The
control function implementation minimizes external timing
requirements. The device features an Output Enable (OE) input for
easy cascading and a Direction (DIR) input for direction control.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
T
amb
= 25
C
TYPICAL
UNIT
t
PLH
t
PHL
Propagation delay
nAx to nBx or nBx to nAx
C
L
= 50pF;
V
CC
= 3.3V
1.9
ns
C
IN
Input capacitance DIR, OE
V
I
= 0V or 3.0V
3
pF
C
I/O
I/O pin capacitance
V
I/O
= 0V or 3.0V
9
pF
I
CCZ
Total supply current
Outputs disabled; V
CC
= 3.6V
70
A
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
OUTSIDE NORTH AMERICA
NORTH AMERICA
DWG NUMBER
48-Pin Plastic SSOP Type III
40
C to +85
C
74LVT16245B DL
VT16245B DL
SOT370-1
48-Pin Plastic TSSOP Type II
40
C to +85
C
74LVT16245B DGG
VT16245B DGG
SOT362-1
PIN DESCRIPTION
PIN NUMBER
SYMBOL
NAME AND FUNCTION
1, 24
nDIR
Direction control input
47, 46, 44, 43,
41, 40, 38, 37,
36, 35, 33, 32,
30, 29, 27, 26
nA0 nA7
Data inputs/outputs (A side)
2, 3, 5, 6, 8, 9,
11, 12, 13, 14,
16, 17, 19, 20,
22, 23
nB0 nB7
Data inputs/outputs (B side)
25, 48
nOE
Output enable input
(active-Low)
4, 10, 15, 21, 28,
34, 39, 45
GND
Ground (0V)
7, 18, 31, 42
V
CC
Positive supply voltage
LOGIC SYMBOL
2DIR
24
36
35
33
32
30
29
27
26
23
22
20
19
17
16
14
13
2OE
2A0
2A1
2A2
2A3
2A4
2A5
2A6
2A7
2B0
2B1
2B2
2B3
2B4
2B5
2B6
2B7
25
1DIR
1
47
46
44
43
41
40
38
37
12
11
9
8
6
5
3
2
1OE
1A0
1A1
1A2
1A3
1A4
1A5
1A6
1A7
1B0
1B1
1B2
1B3
1B4
1B5
1B6
1B7
48
SA00021
Philips Semiconductors
Product specification
74LVT16245B
3.3V 16-bit transceiver (3-State)
1998 Feb 19
3
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
GND
V
CC
GND
GND
V
CC
2A5
2A4
V
CC
2A3
2A2
GND
2A1
2A0
1A7
1A6
GND
1A5
1A4
V
CC
1A3
1A2
GND
1A1
1A0
1OE
21
22
23
24
25
26
27
28
GND
2DIR
2OE
2A7
2A6
GND
SW00061
1DIR
1B0
1B1
1B2
1B3
1B4
1B5
1B6
1B7
2B0
2B1
2B2
2B3
2B4
2B5
2B6
2B7
LOGIC SYMBOL (IEEE/IEC)
1
2
1
2
48
47
46
G3
1
3 EN1 (BA)
3 EN2 (AB)
2
3
44
5
43
6
41
8
40
9
38
11
37
12
25
36
35
G3
24
3 EN1 (BA)
3 EN2 (AB)
13
14
33
16
32
17
30
19
29
20
27
22
26
23
SV00066
1B3
1B5
1B1
1B0
1B4
1B2
1DIR
1B7
2B0
1B6
2B1
2B3
2B2
2B4
2B5
2B6
2B7
2DIR
1A3
1A5
1A1
1A7
2A0
1A6
1A0
1A4
1A2
1OE
2A1
2A3
2A2
2A5
2A4
2A7
2A6
2OE
FUNCTION TABLE
INPUTS
INPUTS/OUTPUTS
nOE
nDIR
nAx
nBx
L
L
nAx = nBx
Inputs
L
H
Inputs
nBx = nAx
H
X
Z
Z
H = High voltage level
L
= Low voltage level
X = Don't care
Z = High Impedance "off" state
Philips Semiconductors
Product specification
74LVT16245B
3.3V 16-bit transceiver (3-State)
1998 Feb 19
4
ABSOLUTE MAXIMUM RATINGS
1,2
SYMBOL
PARAMETER
CONDITIONS
RATING
UNIT
V
CC
DC supply voltage
0.5 to +4.6
V
I
IK
DC input diode current
V
I
< 0
50
mA
V
I
DC input voltage
3
0.5 to +7.0
V
I
OK
DC output diode current
V
O
< 0
50
mA
V
OUT
DC output voltage
3
Output in Off or High state
0.5 to +7.0
V
I
O
DC output current
Output in Low state
128
mA
I
OUT
DC output current
Output in High state
64
mA
T
stg
Storage temperature range
65 to +150
C
NOTES:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability.
2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction
temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150
C.
3. The input and output negative voltage ratings may be exceeded if the input and output clamp current ratings are observed.
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
UNIT
SYMBOL
PARAMETER
MIN
MAX
UNIT
V
CC
DC supply voltage
2.7
3.6
V
V
I
Input voltage
0
5.5
V
V
IH
High-level input voltage
2.0
V
V
IL
Input voltage
0.8
V
I
OH
High-level output current
32
mA
I
OL
Low-level output current
32
mA
Low-level output current; current duty cycle
50%; f
1kHz
64
t/
v
Input transition rise or fall rate; Outputs enabled
10
ns/V
T
amb
Operating free-air temperature range
40
+85
C
Philips Semiconductors
Product specification
74LVT16245B
3.3V 16-bit transceiver (3-State)
1998 Feb 19
5
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
Temp = -40
C to +85
C
UNIT
MIN
TYP
1
MAX
V
IK
Input clamp voltage
V
CC
= 2.7V; I
IK
= 18mA
0.85
1.2
V
V
CC
= 2.7 to 3.6V; I
OH
= 100
A
V
CC
-0.2
V
CC
V
OH
High-level output voltage
V
CC
= 2.7V; I
OH
= 8mA
2.4
2.5
V
V
CC
= 3.0V; I
OH
= 32mA
2.0
2.3
V
CC
= 2.7V; I
OL
= 100
A
0.07
0.2
V
CC
= 2.7V; I
OL
= 24mA
0.3
0.5
V
OL
Lowlevel output voltage
V
CC
= 3.0V; I
OL
= 16mA
0.25
0.4
V
V
CC
= 3.0V; I
OL
= 32mA
0.3
0.5
V
CC
= 3.0V; I
OL
= 64mA
0.4
0.55
V
CC
= 3.6V; V
I
= V
CC
or GND
Control pins
0.1
1
V
CC
= 0 or 3.6V; V
I
= 5.5V
Control pins
0.1
10
I
I
Input leakage current
V
CC
= 3.6V; V
I
= 5.5V
0.1
20
A
V
CC
= 3.6V; V
I
= V
CC
I/O Data pins
4
0.5
10
V
CC
= 3.6V; V
I
= 0
0.1
-5
I
OFF
Output off current
V
CC
= 0V; V
I
or V
O
= 0 to 4.5V
0.1
100
A
Bus Hold current
V
CC
= 3V; V
I
= 0.8V
75
135
I
HOLD
Bus Hold current
A or B outputs
6
V
CC
= 3V; V
I
= 2.0V
-75
-135
A
A or B out uts
V
CC
= 0V to 3.6V; V
CC
= 3.6V
500
I
EX
Current into an output in the
High state when V
O
> V
CC
V
O
= 5.5V; V
CC
= 3.0V
75
125
A
I
PU/PD
Power up/down 3-State output
current
3
V
CC
1.2V; V
O
= 0.5V to V
CC
; V
I
= GND or V
CC
;
OE/OE = Don't care
40
100
A
I
CCH
V
CC
= 3.6V; Outputs High, V
I
= GND or V
CC,
I
O =
0
0.07
0.12
I
CCL
Quiescent supply current
V
CC
= 3.6V; Outputs Low, V
I
= GND or V
CC,
I
O =
0
4.7
6
mA
I
CCZ
V
CC
= 3.6V; Outputs Disabled; V
I
= GND or V
CC,
I
O =
0
5
0.07
0.12
I
CC
Additional supply current per
input pin
2
V
CC
= 3V to 3.6V; One input at V
CC
-0.6V,
Other inputs at V
CC
or GND
0.1
0.2
mA
NOTES:
1. All typical values are at V
CC
= 3.3V and T
amb
= 25
C.
2. This is the increase in supply current for each input at the specified voltage level other than V
CC
or GND
3. This parameter is valid for any V
CC
between 0V and 1.2V with a transition time of up to 10msec. From V
CC
= 1.2V to V
CC
= 3.3V
0.3V a
transition time of 100
sec is permitted. This parameter is valid for T
amb
= 25
C only.
4. Unused pins at V
CC
or GND.
5. I
CCZ
is measured with outputs pulled to V
CC
or GND.
6. This is the bus hold overdrive current required to force the input to the opposite logic state.
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