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

HD74ACT161/HD74ACT163

Synchronous Presettable Binary Counter

REJ03D0279–0200Z

(Previous ADE-205-402 (Z))

Rev.2.00

Jul.16.2004

Description

The HD74ACT161 and HD74ACT163 are high-speed synchronous modulo-16 binary counters. They are

synchronously presettable for application in programmable dividers and have two types of Count Enable inputs plus a

Terminal Count output for versatility in forming synchronous multistage counters. The HD74ACT161 have an

asynchronous Master Reset input that overrides all other inputs and forces the outputs Low. The HD74ACT163 has a

Synchronous Reset input that overrides counting and parallel loading and allows the outputs to be simultaneously reset

on the rising edge of the clock.

Features

• Synchronous Counting and Loading

• High-Speed Synchronous Expansion

• Typical Count Rate of 125 MHz

• Outputs Source/Sink 24 mA

• HD74ACT161 and HD74ACT163 have TTL-Compatible Inputs

• Ordering Information: Ex. HD74ACT161

Part Name

Package Type

Package Code Package Abbreviation Taping Abbreviation (Quantity)

HD74ACT161FPEL SOP-16 pin (JEITA)

FP-16DAV

FP

EL (2,000 pcs/reel)

HD74ACT161RPEL SOP-16 pin (JEDEC) FP-16DNV

RP

EL (2,500 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

*R

CP

GND

CEP

TC

CET

PE

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