SL74HC573


System Logic
Semiconductor SLS
Octal 3-State Noninverting Transparent Latch

High-Performance Silicon-Gate CMOS

The SL74HC573 is identical in pinout to the LS/ALS573. The device
inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LS/ALSTTL outputs.
These latches appear transparent to data (i.e., the outputs change
asynchronously) when Latch Enable is high. When Latch Enable goes
low, data meeting the setup and hold time becomes latched.
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 µA
• High Noise Immunity Characteristic of CMOS Devices

ORDERING INFORMATION
SL74HC573N Plastic
SL74HC573D SOIC
TA = -55° to 125° C for all packages


FUNCTION TABLE
Inputs Output
Output
Enable
Latch
Enable
D Q
L H H H
L H L L
L L X no change
H X X Z
X = don’t care
Z = high impedance
LOGIC DIAGRAM


PIN 20=VCC
PIN 10 = GND

PIN ASSIGNMENT