MM54HC192数据手册TI中文资料规格书

描述 Description

General Description
These high speed synchronous counters utilize advanced silicon-gate CMOS technology to achieve the high noise immunity and low power consumption of CMOS technology, along with the speeds of low power Schottky TTL. The MM54HC192/MM74HC192 is a decade counter, and the MM54HC193/MM74HC193 is a binary counter. Both counters have two separate clock inputs, an UP COUNT input and a DOWN COUNT input. All outputs of the flip-flops are simultaneously triggered on the low to high transition of either clock while the other input is held high. The direction of counting is determined by which input is clocked.

特性 Features

Typical propagation delay, Count up to Q: 28 ns
Typical operating frequency: 27 MHz
Wide power supply range: 2–6V
Low quiescent supply current: 80 mA maximum (74HC Series)
Low input current: 1 mA maximum
4 mA output drive