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Synchronous 4-Bit Up/Down Counter with Mode Control
74191
ic logic
A synchronous 4-bit up/down counter with mode control for digital counting applications.
In stock
Specifications
3- Operating Voltage
- 5 V
- Supply Current
- 10 mA
- Package
- CDIP, CFP, PDIP, SOIC, LCCC
Pinout
16Low source legibility.The original manufacturer datasheet for this part was difficult to read, so this pinout may be incomplete or imperfect. Always confirm against the specific manufacturer’s datasheet before wiring.
| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | UP/DOWN | GPIO | Mode select pin |
| 2 | CLOCK | GPIO | Clock input for counting |
| 3 | Q0 | GPIO | 4-bit counter output |
| 4 | Q1 | GPIO | 4-bit counter output |
| 5 | Q2 | GPIO | 4-bit counter output |
| 6 | Q3 | GPIO | 4-bit counter output |
| 7 | CARRY OUT | GPIO | Carry out from the 4-bit counter |
| 8 | CLEAR | GPIO | Clears the counter to zero |
| 9 | LOAD | GPIO | Loads data into the counter |
| 10 | PRESET | GPIO | Preset value to the counter |
| 11 | CARRY IN | GPIO | Carry in to the 4-bit counter |
| 12 | VCC | POWER | Supply voltage |
| 13 | GND | GND | Ground reference |
| 14 | VSS | GND | Supply ground |
| 15 | VDD | POWER | Supply voltage |
| 16 | VCC | POWER | Supply voltage |
Interactive pinout
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74191
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