54ABT573
Octal D-Type Latch with TRI-STATE
®
Outputs
General Description
The ’ABT573 is an octal latch with buffered common Latch
Enable (LE) and buffered common Output Enable (OE) in-
puts.
This device is functionally identical to the ’ABT373 but has
different pinouts.
Features
n Inputs and outputs on opposite sides of package allow
easy interface with microprocessors
n Useful as input or output port for microprocessors
n Functionally identical to ’ABT373
n TRI-STATE outputs for bus interfacing
n Output sink capability of 48 mA, source capability of
24 mA
n Output switching specified for both 50 pF and 250 pF
loads
n Guaranteed latchup protection
n High impedance glitch-free bus loading during entire
power up and power down
n Nondestructive hot insertion capability
n Standard Microcircuit Drawing (SMD) 5962-9321901
Ordering Code
Military Package Package Description
Number
54ABT573J-QML J20A 20-Lead Ceramic Dual-In-Line
54ABT573W-QML W20A 20-Lead Cerpack
54ABT573E-QML E20A 20-Lead Ceramic Leadless Chip Carrier, Type C
Connection Diagram
Pin
Names
Description
D
0
–D
7
Data Inputs
LE Latch Enable Input (Active HIGH)
OE TRI-STATE Output Enable Input
(Active LOW)
O
0
–O
7
TRI-STATE Latch Outputs
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
Pin Assignment
for DIP and Cerpack
DS100219-1
Pin Assignment
for LCC
DS100219-39
July 1998
54ABT573
Octal
D-T
ype
Latch
with
TRI-ST
A
T
E
Outputs
© 1998 National Semiconductor Corporation DS100219 www.national.com