TC7MH161,163FK

2007-10-19

1

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

TC7MH161FK,TC7MH163FK

Synchronous Presettable 4-Bit Binary Counter

TC7MH161FK Asynchronous Clear

TC7MH163FK Synchronous Clear

The TC7MH161FK and 163FK are advanced high speed CMOS

synchronous presettable 4-bit binary 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 each IC’s is synchronous to the rising edge of CK.

The clear function of the TC7MH163FK is synchronous to CK,

while the TC7MH161FK 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.

An input protection circuit ensures that 0 to 5.5 V can be applied to the input pins without regard to the supply

voltage. This device can be used to interface 5 V to 3 V systems and two supply systems such as battery back up.

This circuit prevents device destruction due to mismatched supply and input voltages.

Features

• Power down protection is equipped with all inputs.

• Pin and function compatible with 74ALS161/163

Weight: 0.02 g (typ.)