74HCT164 Datasheet, PDF (2/10 Pages) Diodes Incorporated – 8-BIT PARALLEL-OUT SERIAL SHIFT REGISTERS

Pin Descriptions
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Pin Name
DSA
DSB
Q0
Q1
Q2
Q3
GND
CP
MR
Q4
Q5
Q6
Q7
VCC
74HCT164
Function
Serial Data Input
Serial Data Input
Data Output
Data Output
Data Output
Data Output
Ground
Clock Pulse –Positive Edge Triggered
Master Reset - Asynchronous
Data Output
Data Output
Data Output
Data Output
Supply Voltage
Function Table
Mode
MR
Input
CP
DSA
DSB
Output
Q0
Q1-Q7
Reset
L
X
X
X
L
L
H
↑
L
X
L
Qn←Qn-1 (n= 1 to7)
Shift
H
↑
X
L
L
Qn←Qn-1 (n= 1 to7)
H
↑
H
H
H
Qn←Qn-1 (n= 1 to7)
Note:
4. Signals asserted on DSA and DSB must be in place longer than Tsu (set up time) before CP occurs and remain in place Thold (hold time) after CP.
74HCT164
Document number: DS36280 Rev. 2 - 2
2 of 10
www.diodes.com
August 2015
© Diodes Incorporated