TC74ACT161,163P/F

2012-02-29

1

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

TC74ACT161P,TC74ACT161F

TC74ACT163P,TC74ACT163F

Synchronous Presettable 4-Bit Binary Counter

TC74ACT161P/F/FN Asynchronous Clear

TC74ACT163P/F/FN Synchronous Clear

The TC74ACT161 and T163 are advanced high speed CMOS

SYNCHRONOUS PRESETTABLE 4 BIT BINARY COUNTERs

fabricated with silicon gate and double-layer metal wiring

They achieve the high speed operation similar to equivalent

Bipolar Schottky TTL while maintaining the CMOS low power

dissipation.

These devices may be used as a level converter for interfacing

TTL or NMOS to High Speed CMOS. The inputs are compatible

with TTL, NMOS and CMOS output voltage levels.

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 TC74ACT163 is synchronous to CK,

while the TC74ACT161 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

TC74ACT161P, TC74ACT163P

TC74ACT161F, TC74ACT163F

Weight

DIP16-P-300-2.54A

: 1.00 g (typ.)

SOP16-P-300-1.27A

: 0.18 g (typ.)