Philips Semiconductors
Product specification
74ABT16543
74ABTH16543
16-bit latched transceivers with dual enable
(3-State)
2
1998 Feb 27
853-1739 19026
FEATURES
Two 8-bit octal transceivers with D-type latch
Live insertion/extraction permitted
Power-up 3-State
Power-up reset
Multiple V
CC
and GND pins minimize switching noise
Back-to-back registers for storage
Separate controls for data flow in each direction
74ABTH16543 incorporates bus-hold data inputs which eliminate
the need for external pull-up resistors to hold unused inputs
Output capability: +64mA/–32mA
Latch-up protection exceeds 500mA per JEDEC Std 17
ESD protection exceeds 2000V per MIL STD 883 Method 3015
and 200V per Machine Model
See 74ABT161543 for same function with Master Reset control
pins
DESCRIPTION
The 74ABT16543 high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed and high
output drive.
The 74ABT16543 16-bit registered transceiver contains two sets of
D-type latches for temporary storage of data flowing in either
direction. Separate Latch Enable (nLEAB, nLEBA) and Output
Enable (nOEAB, nOEBA) inputs are provided for each register to
permit independent control of data transfer in either direction. The
outputs are guaranteed to sink 64mA.
Two options are available, 74ABT16543 which does not have the
bus-hold feature and 74ABTH16543 which incorporates the
bus-hold feature.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
T
amb
= 25
°
C; GND = 0V
TYPICAL
UNIT
t
PLH
t
PHL
C
IN
C
I/O
I
CCZ
I
CCL
Propagation delay
nAx to nBx
Input capacitance
I/O capacitance
C
L
= 50pF; V
CC
= 5V
2.5
2.2
3
7
550
9
ns
V
I
= 0V or V
CC
V
O
= 0V or V
CC;
3-State
Outputs disabled; V
CC
= 5.5V
Outputs low; V
CC
= 5.5V
pF
pF
μ
A
mA
Quiescent supply current
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
OUTSIDE NORTH AMERICA
NORTH AMERICA
DWG NUMBER
56-Pin Plastic SSOP Type III
–40
°
C to +85
°
C
74ABT16543 DL
BT16543 DL
SOT371-1
56-Pin Plastic TSSOP Type II
–40
°
C to +85
°
C
74ABT16543 DGG
BT16543 DGG
SOT364-1
56-Pin Plastic SSOP Type III
–40
°
C to +85
°
C
74ABTH16543 DL
BH16543 DL
SOT371-1
56-Pin Plastic TSSOP Type II
–40
°
C to +85
°
C
74ABTH16543 DGG
BH16543 DGG
SOT364-1
PIN DESCRIPTION
PIN NUMBER
SYMBOL
NAME AND FUNCTION
5, 6, 8, 9, 10, 12, 13, 14
15, 16, 17, 19, 20, 21, 23, 24
1A0 – 1A7,
2A0 – 2A7
Data inputs/outputs
52, 51, 49, 48, 47, 45, 44, 43
42, 41, 40,38, 37, 36, 34, 33
1B0 – 1B7,
2B0 – 2B7
Data inputs/outputs
1, 56
28, 29
1OEAB, 1OEBA,
2OEAB, 2OEBA
A to B / B to A Output Enable inputs (active-Low)
3, 54
26, 31
1EAB, 1EBA,
2EAB, 2EBA
A to B / B to A Enable inputs (active-Low)
2, 55
27, 30
1LEAB, 1LEBA,
2LEAB, 2LEBA
A to B / B to A Latch Enable inputs (active-Low)
4, 11, 18, 25, 32, 39, 46, 53
GND
Ground (0V)
7, 22, 35, 50
V
CC
Positive supply voltage