Description
These high speed synchronous counters utilize advanced silicon-gate CMOS technology They possess the high noise immunity and low power consumption of CMOS technology along with the speeds of low power Schottky TTL
These circuits are synchronous reversible up down counters The MM54HC191 MM74HC191 ar
Features
- Y Level changes on Enable or Down Up can be made regardless of the level of the clock input
Y Wide power supply range 2.
- 6V Y Low quiescent supply current 80 mA maximum
(74HC Series) Y Low input current 1 mA maximum
Connection Diagram
Dual-In-Line Package
Load
H H L H
Enable G
L L X H
Down Up
L H X X
Clock Function
u Count Up u Count Down
X Load X No Change
Asynchronous inputs Low input to load sets QA e A QB e B QC e C and QD e D
Order Number MM54HC190 191 or MM74HC190 191
Top.
74190 Datasheet
