Presettable synchronous 4-bit binary up/down counter

GENERAL DESCRIPTION The 74HC/HCT191 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. The 74HC/HCT191 are asynchronously presettable 4-bit binary up/down counters. They contain four master/

文件：108.17 Kbytes 页数：14 Pages

PHI

飞利浦

HIGH SPEED CMOS LOGIC

文件：292.5 Kbytes 页数：10 Pages

TI

德州仪器

SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL

文件：614.22 Kbytes 页数：26 Pages

TI

德州仪器

SYNCHORONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL

文件：1.23656 Mbytes 页数：31 Pages

TI

德州仪器