* s Counts binary s Single down/up count control line s Count enable control input s Ripple clock output for cascading s Asynchronously presettable with load control s Parallel outputs s Cascadable for n-bit applications s Average propagation delay 20 ns s Typical clock frequency 25 MHz s Typical powe
DM74LS191 Datasheet (72.74 KB)
DM74LS191
Fairchild Semiconductor
72.74 KB
Synchronous 4-bit up/down counter.
DM74LS191 Synchronous 4-Bit Up/Down Counter with Mode Control
August 1986 Revised February 1999
DM74LS191 Synchronous 4-Bit Up/Down Counter with Mod.
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(National Semiconductor)
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