TC74AC161,163P/F/FT

2012-02-29

1

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

TC74AC161P,TC74AC161F,TC74AC161FT

TC74AC163P,TC74AC163F,TC74AC163FT

Synchronous Presettable 4-Bit Binary Counter

TC74AC161P/F/FT Asynchronous Clear

TC74AC163P/F/FT Synchronous Clear

The TC74AC161 and 163 are advanced high speed CMOS

SYNCHRONOUS PRESETTABLE COUNTERs fabricated with

They achieve the high speed operation similar to equivalent

Bipolar Schottky TTL while maintaining the CMOS low power

dissipation.

The CK input is active on the rising edge. Both LOAD and

CLR inputs are active on low logic level.

Presetting of these IC’s is synchronous to the rising edge of CK.

The clear function of the TC74AC163 is synchronous to CK,

while the TC74AC161 are cleared asynchronously.

Two enable inputs (ENP and ENT) and CARRY OUTPUT are

provided to enable easy cascading of counters, which facilitates

easy implementation of n-bit counters without using external

gates.

All inputs are equipped with protection circuits against static

discharge or transient excess voltage.

Features

Capability of driving 50 Ω

transmission lines.

• Pin and function compatible with 74F161/163

TC74AC161P, TC74AC163P

TC74AC161F, TC74AC163F

TC74AC161FT, TC74AC163FT

Weight

DIP16-P-300-2.54A

: 1.00 g (typ.)

SOP16-P-300-1.27A

: 0.18 g (typ.)

TSSOP16-P-0044-0.65A

: 0.06 g (typ.)