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MM74HC191 Datasheet(PDF) 7 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # MM74HC191
Description  MM54HC190/MM74HC190 Synchronous Decade Up/Down Counters with Mode Control MM54HC191/MM74HC191 Synchronous Binary Up/Down Counters with Mode Control
PDF  8 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

MM74HC191 Datasheet(HTML) 7 Page - National Semiconductor (TI)

  MM74HC191 Datasheet HTML 1Page - National Semiconductor (TI) MM74HC191 Datasheet HTML 2Page - National Semiconductor (TI) MM74HC191 Datasheet HTML 3Page - National Semiconductor (TI) MM74HC191 Datasheet HTML 4Page - National Semiconductor (TI) MM74HC191 Datasheet HTML 5Page - National Semiconductor (TI) MM74HC191 Datasheet HTML 6Page - National Semiconductor (TI) MM74HC191 Datasheet HTML 7Page - National Semiconductor (TI) MM74HC191 Datasheet HTML 8Page - National Semiconductor (TI)  
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Timing Diagrams
’HC190 Synchronous Decade Counters
Typical Load Count and Inhibit Sequences
TLF5322 – 4
Sequence
(1) Load (preset) to BCD seven
(2) Count up to eight nine zero one and two
(3) Inhibit
(4) Count down to one zero nine eight and seven
’HC191 Synchronous Binary Counters
Typical Load Count and Inhibit Sequence
TLF5322 – 5
Sequence
(1) Load (preset) to binary thirteen
(2) Count up to fourteen fifteen zero one and two
(3) Inhibit
(4) Count down to one zero fifteen fourteen and thirteen
7



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