74HC165 Parallel-In Serial-Out Shift Register
Pinout
One grouped source record is expanded into separate logical pads where unambiguous; physical placement is not implied.
- VCC
Logic supply; choose 3.3V for direct ESP32/Pico GPIO compatibility or 5V for 5V MCU logic.
Type · PowerVoltage · 3.3V - GND
Ground reference.
Type · Ground - PL
Parallel-load latch control from MCU.
Type · GPIO - CP
Shift clock from MCU.
Type · GPIO - Q7
Serial data output to MCU input.
Type · GPIO - CE
Clock enable; may be tied active or controlled by MCU.
Type · Control - D0-D7
Parallel input pins from downstream buttons or logic signals; not MCU GPIO.
Type · Signal
| Pin | Type | Function | Voltage |
|---|---|---|---|
| VCC | Power | Logic supply; choose 3.3V for direct ESP32/Pico GPIO compatibility or 5V for 5V MCU logic. | 3.3V |
| GND | Ground | Ground reference. | |
| PL | GPIO | Parallel-load latch control from MCU. | |
| CP | GPIO | Shift clock from MCU. | |
| Q7 | GPIO | Serial data output to MCU input. | |
| CE | Control | Clock enable; may be tied active or controlled by MCU. | |
| D0-D7 | Signal | Parallel input pins from downstream buttons or logic signals; not MCU GPIO. |
One grouped source record is expanded into separate logical pads where unambiguous; physical placement is not implied.
Pin details
7 connections- VCC
Logic supply; choose 3.3V for direct ESP32/Pico GPIO compatibility or 5V for 5V MCU logic.
PowerVoltage · 3.3V - GND
Ground reference.
Ground - PL
Parallel-load latch control from MCU.
GPIO - CP
Shift clock from MCU.
GPIO - Q7
Serial data output to MCU input.
GPIO - CE
Clock enable; may be tied active or controlled by MCU.
Control - D0-D7
Parallel input pins from downstream buttons or logic signals; not MCU GPIO.
Signal
Passives
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