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Synchronous 4-Bit Up/Down Counter with Mode Control
74191
ic logic
The SN74LS191DR is a synchronous 4-bit up/down counter with mode control, suitable for digital signal processing and timing applications.
In stock
Specifications
3- Operating Voltage
- 5V Volts
- Package Type
- SOIC
- Number Of Pins
- 16
Pinout
16| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | VCC | POWER | Power supply |
| 2 | GND | GND | Ground reference |
| 3 | CLK | GPIO | Clock input for counter operation |
| 4 | D0 | GPIO | Data input 0 |
| 5 | D1 | GPIO | Data input 1 |
| 6 | D2 | GPIO | Data input 2 |
| 7 | D3 | GPIO | Data input 3 |
| 8 | Q0 | GPIO | Output Q0, counter output |
| 9 | Q1 | GPIO | Output Q1, counter output |
| 10 | Q2 | GPIO | Output Q2, counter output |
| 11 | Q3 | GPIO | Output Q3, counter output |
| 12 | CLR | GPIO | Clear input for resetting the counter |
| 13 | LD | GPIO | Load input to load data into the counter |
| 14 | PRESET | GPIO | Preset input for setting the counter value |
| 15 | MODE | GPIO | Mode control input to select up/down counting mode |
| 16 | GND | GND | Ground reference |
Interactive pinout
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74191
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