5 Pin Configuration and Functions

1

2

3

7

4

5

6

14

13

12

8

11

10

9

GND

D

B

A

VCC

15

16

CLK

E

F

G

H

CLK INH

C

CLR

QH

SH/LD

SER

D or PW Package 16-Pin SOIC or TSSOP Top View

Pin Functions

PIN

TYPE

DESCRIPTION

NAME

NO.

SER

1

Input

Serial input

A

2

Input

Parallel input A

B

3

Input

Parallel input B

C

4

Input

Parallel input C

D

5

Input

Parallel input D

CLK INH

6

Input

Clock inhibit input

CLK

7

Input

Clock input, positive edge triggered

GND

8

—

Ground

CLR

9

Input

Clear input, active low

E

10

Input

Parallel input E

F

11

Input

Parallel input F

G

12

Input

Parallel input G

QH

13

Output

QH output

H

14

Input

Parallel input H

SH/ LD

15

Input

Shift/ load input, enable shifting when input is high, load data when input is low

VCC

16

—

Positive supply

www.ti.com

SN74HCS166-Q1

SCLS830A – JUNE 2020 – REVISED AUGUST 2020

Copyright © 2020 Texas Instruments Incorporated

Submit Document Feedback

3

Product Folder Links: SN74HCS166-Q1