54ACT573
Octal Latch with TRI-STATE
®
Outputs
General Description
The ’ACT573 is a high-speed octal latch with buffered com-
mon Latch Enable (LE) and buffered common Output Enable
(OE) inputs.
The ’ACT573 is functionally identical to the ’ACT373 but has
inputs and outputs on opposite sides.
Features
n I
CC
and I
OZ
reduced by 50%
n Inputs and outputs on opposite sides of package
allowing easy interface with microprocessors
n Useful as input or output port for microprocessors
n Functionally identical to ’ACT373
n TRI-STATE outputs for bus interfacing
n Outputs source/sink 24 mA
n ’ACT573 has TTL-compatible inputs
n Standard Military Drawing (SMD)
— ’ACT573: 5962-87664
Logic Symbols
Pin Names Description
D
0
–D
7
Data Inputs
LE Latch Enable Input
OE TRI-STATE Output Enable Input
O
0
–O
7
TRI-STATE Latch Outputs
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
FACT
®
is a registered trademark of Fairchild Semiconductor Corporation.
DS100332-1
IEEE/IEC
DS100332-2
August 1998
54ACT573
Octal
Latch
with
TRI-ST
A
T
E
Outputs
© 1998 National Semiconductor Corporation DS100332 www.national.com