© 2004 Fairchild Semiconductor Corporation

DS005896

www.fairchildsemi.com

October 1987

Revised January 2004

MM74C164

8-Bit Parallel-Out Serial Shift Register

General Description

The MM74C164 shift registers are a monolithic comple-

mentary MOS (CMOS) integrated circuit constructed with

N- and P-channel enhancement transistors. These 8-bit

shift registers have gated serial inputs and clear. Each reg-

ister bit is a D-type master/slave flip-flop. A high-level input

enables the other input which will then determine the state

of the flip-flop.

Data is serially shifted in and out of the 8-bit register during

the positive going transition of clock pulse. Clear is inde-

pendent of the clock and accomplished by a low level at the

clear input. All inputs are protected against electrostatic

effects.

Features

s Supply voltage range:

3V to 15V

s Tenth power TTL compatible: drive 2 LPTTL loads

s Low power: 50 nW (typ.)

s Medium speed operation: 0.8 MHz (typ.) with 10V

supply

Applications

• Data terminals

• Instrumentation

• Medical electronics

• Alarm systems

• Industrial electronics

• Remote metering

• Computers

Ordering Code:

Connection Diagram

Top View

Truth Table

Serial Inputs A and B

Order Number

Package Number

Package Description

MM74C164M

M14A

14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow

MM74C164N

N14A

14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide

Inputs

Output

AB

111

010

100

000