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74HC166 8-bit Shift Register
74HC166
Texas Instrumentsic logic
The 74HC166 is an 8-bit shift register that can be used to increase the number of inputs/outputs to a microcontroller, featuring parallel and serial data input modes.
In stock
Specifications
8- Operating Voltage
- 2V to 6V
- Supply Current
- 80μA max
- Interface
- GPIO, I2C, SPI, UART
- Resolution
- Not applicable
- Range
- Not applicable
- Accuracy
- Not applicable
- Temperature Range
- -55°C to 125°C
- Package
- D (SOIC, 16), DB (SSOP, 16), N (PDIP, 16), NS (SOP, 16), PW (TSSOP, 16)
Pinout
16| Pin | Name | Functions | Notes |
|---|---|---|---|
| SER | Serial input | GPIO | Serial data input for shifting |
| CLK INH | Clock inhibit input | GPIO | Controls clock enable or inhibit function |
| CLK | Clock input, positive edge triggered | GPIO | Positive edge triggers shifting or loading data |
| CLR | Clear input, active low | GPIO | Active low to reset all flip-flops to zero |
| SH/LD | Shift/ load input, enable shifting when high, load data when low | GPIO | Mode select for parallel or serial operation |
| A | Parallel input A | GPIO | Parallel data input |
| B | Parallel input B | GPIO | Parallel data input |
| C | Parallel input C | GPIO | Parallel data input |
| D | Parallel input D | GPIO | Parallel data input |
| E | Parallel input E | GPIO | Parallel data input |
| F | Parallel input F | GPIO | Parallel data input |
| G | Parallel input G | GPIO | Parallel data input |
| H | Parallel input H | GPIO | Parallel data input |
| QH | Output QH | GPIO | Serial output for shifting |
| VCC | Positive supply | POWER | |
| GND | Ground | GND |
Interactive pinout
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74HC166
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