Rev.2.00, Jul.16.2004, page 1 of 8

HD74AC166/HD74ACT166

8-bit Shift Register

REJ03D0255–0200Z

(Previous ADE-205-375 (Z))

Rev.2.00

Jul.16.2004

Description

The HD74AC166/HD74ACT166 is an 8-bit, serial or parallel-in, serial-out shift register using edge triggered D-type

flip-flops. Serial and parallel entry are synchronous, with state changes initiated by the rising edge of the clock. An

asynchronous Master Reset overrides other inputs and clears all flip-flops. The circuit can be clocked from two sources

or one CP input can be used to trigger the other.

Features

• Outputs Source/Sink 24 mA

• HD74ACT166 has TTL-Compatible Inputs

• Ordering Information: Ex. HD74AC166

Part Name

Package Type

Package Code Package Abbreviation Taping Abbreviation (Quantity)

HD74AC166AFPEL SOP-16 pin (JEITA)

FP-16DAV

FP

EL (2,000 pcs/reel)

HD74AC166ARPEL SOP-16 pin (JEDEC) FP-16DNV

RP

EL (2,500 pcs/reel)

HD74AC166TELL

TSSOP-16 pin

TTP-16DAV

T

ELL(2,000 pcs/reel)

Notes: 1. Please consult the sales office for the above package availability.

2. The packages with lead-free pins are distinguished from the conventional products by adding V at the end of

the package code.

Pin Arrangement

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

GND

PE

MR

(Top view)