异步置数/异步复位同步4位二进制加减计数器

Presettable synchronous 4-bit binary up/down counter

1. General description The 74HC193; 74HCT193 is a 4-bit synchronous binary up/down counter. Separate up/down clocks, CPU and CPD respectively, simplify operation. The outputs change state synchronously with the LOW-to-HIGH transition of either clock input. If the CPU clock is pulsed while CPD i

Presettable synchronous 4-bit binary up/down counter

GENERAL DESCRIPTION The 74HC/HCT193 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. FEATURES • Synchronous reversible 4-bit binary counting • Asynchronous parallel load • Asynchronous

Presettable synchronous 4-bit binary up/down counter

Presettable synchronous 4-bit binary up/down counter

GENERAL DESCRIPTION The 74HC/HCT193 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. FEATURES • Synchronous reversible 4-bit binary counting • Asynchronous parallel load • Asynchronous

Presettable synchronous 4-bit binary up/down counter