CD74HC191M
Texas Instruments
-55℃~+125℃ 1 2V~6V 35MHz 50ns@6V,50pF 74HC Asynchronous Cascade counter、Synchronous counting、Asynchronous parallel load、Multi-mode counting Divide-by-2 Rising Edge Synchronous Up Counter、Down Counter SOIC-16 Counters, Dividers ROHS
- Category
- Counters, Dividers
- Package
- SOIC-16
- Pins
- 2
Overview
The CD74HC191M is a counters, Divider made by Texas Instruments in a SOIC-16 package with 16 pins. -55℃~+125℃ 1 2V~6V 35MHz 50ns@6V,50pF 74HC Asynchronous Cascade counter、Synchronous counting、Asynchronous parallel load、Multi-mode counting Divide-by-2 Rising Edge Synchronous Up Counter、Down Counter SOIC-16 Counters, Dividers ROHS.
PCBKit's library has its KiCad symbol (74xx:74LS191, from KiCad's library) and its footprint (Package_SO:SO-16_3.9x9.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C1499644).
Symbol
Footprint
Parameters
15- Count Rate
- 35MHz
- Direction
- Up Counter, Down Counter
- Features
- Cascade counter, Synchronous counting, Asynchronous parallel load, Multi-mode counting
- Logic Type
- Divide-by-2
- Number of Bits per Element
- 4
- Number of Elements
- 1
- Operating Temperature
- -55℃~+125℃
- Propagation Delay
- 50ns@6V,50pF
- Reset
- Asynchronous
- Reset Style
- 异步
- Series
- 74HC
- Timing
- Synchronous
- Timing mode
- Synchronous
- Trigger Type
- Rising Edge
- Voltage - Supply
- 2V~6V
Order codes
1- CD74HC191MLCSC C1499644
Pinout
16| Pin | Name | Type |
|---|---|---|
| 1 | P1 | Input |
| 2 | Q1 | Output |
| 3 | Q0 | Output |
| 4 | Ce | Input |
| 5 | D/U | Input |
| 6 | Q2 | Output |
| 7 | Q3 | Output |
| 8 | GND | Power in |
| 9 | P3 | Input |
| 10 | P2 | Input |
| 11 | Pl | Input |
| 12 | Tc | Output |
| 13 | Rc | Output |
| 14 | Cp | Input |
| 15 | P0 | Input |
| 16 | VCC | Power in |
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Is there a KiCad symbol and footprint for the CD74HC191M?
Yes. The symbol is 74xx:74LS191 and the footprint Package_SO:SO-16_3.9x9.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the CD74HC191M?
SOIC-16, with 16 pins. Its footprint is drawn on this page.
Where is the CD74HC191M datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the CD74HC191M?
JLCPCB lists it as part C1499644, with 0 in stock; the sellers' links on this page open their listings.
What can replace the CD74HC191M?
Parts like it in the library: the 74HC4017D-Q100J by Nexperia, the CD4020AM/TR-HG by HGSEMI, the CD4022BM(LX) by lingxingic and the AIP74HC163SA16.TR by Wuxi I-core Elec. Check their datasheets: a part that fits the footprint may still differ in its ratings.
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