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CD54HC190, CD74HC190 CD54HC191, CD74HC191, CD54HCT191, CD74HCT191 SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL
SCHS275E − MARCH 2002 − REVISED OCTOBER 2003
D 2-V to 6-V VCC Operation (’HC190, 191) D 4.5-V to 5.5-V VCC Operation (’HCT191) D Wide Operating Temperature Range of
−55°C to 125°C
D Synchronous Counting and Asynchronous
Loading
D Two Outputs for n-Bit Cascading D Look-Ahead Carry for High-Speed Counting D Balanced Propagation Delays and
Transition Times
D Standard Outputs Drive Up To 15 LS-TTL
Loads
D Significant Power Reduction Compared to
LS-TTL Logic ICs
CD54HC190, 191; CD54HCT191 . . . F PACKAGE CD74HC190 . . . E, NS, OR PW PACKAGE
CD74HC191, CD74HCT191 . . .
CD54HC190 Datasheet
