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DM54LS191 Datasheet, National Semiconductor

DM54LS191 counters equivalent, synchronous 4-bit up/down counters.

DM54LS191 Avg. rating / M : 1.0 rating-11

datasheet Download (Size : 125.07KB)

DM54LS191 Datasheet
DM54LS191
Avg. rating / M : 1.0 rating-11

datasheet Download (Size : 125.07KB)

DM54LS191 Datasheet

Features and benefits

Y Counts 8-4-2-1 BCD or binary Y Single down up count control line Y Count enable control input Y Ripple clock output for cascading Y Asynchronously presettable with load.

Application

Y Average propagation delay 20 ns Y Typical clock frequency 25 MHz Y Typical power dissipation 100 mW Connection Diagra.

Description

These circuits are synchronous reversible up down counters The LS191 is a 4-bit binary counter and the LS190 is a BCD counter Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change simultaneously .

Image gallery

DM54LS191 Page 1 DM54LS191 Page 2 DM54LS191 Page 3

TAGS

DM54LS191
Synchronous
4-Bit
Down
Counters
National Semiconductor

Manufacturer


National Semiconductor

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