HD74AC164/HD74ACT164
Serial-In, Parallel-Out Shift Register
Description
The HD74AC164/HD74ACT164 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 independent of the
clock.
Features
鈥?/div>
Outputs Source/Sink 24 mA
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HD74ACT164 has TTL-Compatible Inputs
Pin Arrangement
A 1
B 2
Q
0
3
Q
1
4
Q
2
5
Q
3
6
GND 7
(Top view)
14 V
CC
13 Q
7
12 Q
6
11 Q
5
10 Q
4
9
MR
8 CP
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