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HD74LS190 Datasheet(PDF) 6 Page - Renesas Technology Corp

Part # HD74LS190
Description  Synchronous Up / Down Decade Counter (signal clock line)
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD74LS190 Datasheet(HTML) 6 Page - Renesas Technology Corp

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HD74LS190
Rev.3.00, Jul.15.2005, page 6 of 10
Count Sequences
78
90
Load
Ripple
Clock
Inhibit
Count Down
Count Up
12
2
2
1
0
9
8
7
Load
Clock
Down/Up
Max/Min
Enable G
B
A
C
D
QC
QD
QA
QB
Illustrated below is the following sequence:
1.
Load (preset) to BCD seven.
2.
Count up to eight, nine (maximum), zero, one and two.
3.
Inhibit
4.
Count down to one, zero (minimum), nine, eight, and seven.


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