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CD74HC190E Datasheet(PDF) 9 Page - Texas Instruments

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Part # CD74HC190E
Description  SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL
PDF  26 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

CD74HC190E Datasheet(HTML) 9 Page - Texas Instruments

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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
9
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
typical load, count, and inhibit sequence for ’HC191 and ’HCT191
The following sequence is illustrated below:
1.
Load (preset) to binary 13
2.
Count up to 14, 15 (maximum), 0, 1, and 2
3.
Inhibit
4.
Count down to 1, 0 (minimum), 15, 14, and 13
Data
Inputs
Data
Outputs
LOAD
A
B
C
D
CLK
D/U
CTEN
MAX/MIN
QA
QB
QC
QD
Load
Count Up
Inhibit
13
14
15
0
1
2
RCO
Count Down
2
21
0
15
14
13
L
H
H
L
H
L



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