54AC373 • 54ACT373
Octal Transparent Latch with TRI-STATE
®
Outputs
General Description
The ’AC/’ACT373 consists of eight latches with TRI-STATE
outputs for bus organized system applications. The flip-flops
appear transparent to the data when Latch Enable (LE) is
HIGH. When LE is LOW, the data that meets the setup time
is latched. Data appears on the bus when the Output Enable
(OE) is LOW. When OE is HIGH, the bus output is in the high
impedance state.
Features
n I
CC
and I
OZ
reduced by 50%
n Eight latches in a single package
n TRI-STATE outputs for bus interfacing
n Outputs source/sink 24 mA
n ’ACT373 has TTL-compatible inputs
n Standard Microcircuit Drawing (SMD)
— ’AC373: 5962-87555
— ’ACT373: 5962-87556
Logic Symbols
Pin Names Description
D
0
–D
7
Data Inputs
LE Latch Enable Input
OE 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.
DS100329-1
IEEE/IEC
DS100329-2
August 1998
54AC373
•
54ACT373
Octal
T
ransparent
Latch
with
TRI-ST
A
T
E
Outputs
© 1998 National Semiconductor Corporation DS100329 www.national.com