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54HC191 |
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| Part Number | 54HC191 |
| Manufacturer | Texas Instruments (https://www.ti.com/) |
| Description | ordering information The ’HC191 devices are 4-bit synchronous, reversible, up/down binary counters. Synchronous counting operation is provided by having all flip-flops clocked simultaneously so that t... |
| Features |
EN) input is low. A high at CTEN inhibits counting. The direction of the count is determined by the level of the down/up (D/U) input. When D/U is low, the counter counts up, and when D/U is high, it counts down.
SCLS121D − DECEMBER 1982 − REVISED OCTOBER 2003
SN54HC191 . . . J OR W PACKAGE SN74HC191 . . . D, N, OR NS PACKAGE
(TOP VIEW)
B1
QB 2 QA 3 CTEN 4
D/U 5
QC 6 QD 7 GND 8
16 VCC 15 A 14 CLK 13 RCO 12 MAX/MIN 11 LOAD 10 C 9D
SN54HC191 . . . FK PACKAGE (TOP VIEW)
QB B NC VCC A
QA CTEN
NC D/U QC
3 2 1 20 19
4
18
5
17
6
16
7
15
8
14
9 10 11 12 13
CLK RCO NC MAX/MIN LOAD
QD... |
| Document |
 54HC191 Data Sheet
PDF 1.20MB |
Similar Datasheet
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|---|---|---|---|---|
| 1 | 54HC190 |
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Desde 2024. D4U Semiconductor.
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