TL/F/11553
74ACT164
Serial-In,
Parallel-Out
Shift
Register
November 1993
74ACT164
Serial-In, Parallel-Out Shift Register
General Description
The 74ACT164 is a high-speed 8-bit serial-in/parallel-out
shift register. Serial data is entered through a 2-input AND
gate synchronous with the Low-to-High transition of the
clock. The device features an asynchronous Master Reset
which clears the register, setting all outputs Low indepen-
dent of the clock.
Features
Y
Outputs source/sink 24 mA
Y
’ACT has TTL-compatible inputs
Logic Symbol
TL/F/11553–1
Pin Names Description
A, B Data Inputs
CP Clock Pulse Input (Active Rising Edge)
MR Master Reset Input (Active Low)
Q
0
–Q
7
Outputs
Connection Diagram
Pin Assignment
for SOIC
TL/F/11553–2
FACTTM is a trademark of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation RRD-B30M75/Printed in U. S. A.