Texas Instruments SN74HC595N 8-bit Shift Register (PDIP-16)
Pinout
- VCC
Logic supply; use 3.3V for direct ESP32/Pico GPIO compatibility.
Type · PowerVoltage · 3.3 - GND
Ground reference
Type · Ground - DS
Serial data input from MCU.
Type · GPIO - SH_CP
Shift-register clock input from MCU.
Type · GPIO - ST_CP
Storage/latch clock input from MCU.
Type · GPIO - OE
Output enable, active low. Tie low or drive from MCU for blanking.
Type · GPIO - MR
Master reset, active low. Tie high or drive from MCU.
Type · GPIO - Q0-Q7
Eight latched parallel outputs to LEDs, transistor bases, relays, or downstream logic.
Type · Signal
| Pin | Type | Function | Voltage |
|---|---|---|---|
| VCC | Power | Logic supply; use 3.3V for direct ESP32/Pico GPIO compatibility. | 3.3 |
| GND | Ground | Ground reference | |
| DS | GPIO | Serial data input from MCU. | |
| SH_CP | GPIO | Shift-register clock input from MCU. | |
| ST_CP | GPIO | Storage/latch clock input from MCU. | |
| OE | GPIO | Output enable, active low. Tie low or drive from MCU for blanking. | |
| MR | GPIO | Master reset, active low. Tie high or drive from MCU. | |
| Q0-Q7 | Signal | Eight latched parallel outputs to LEDs, transistor bases, relays, or downstream logic. |
Pin details
8 connections- VCC
Logic supply; use 3.3V for direct ESP32/Pico GPIO compatibility.
PowerVoltage · 3.3 - GND
Ground reference
Ground - DS
Serial data input from MCU.
GPIO - SH_CP
Shift-register clock input from MCU.
GPIO - ST_CP
Storage/latch clock input from MCU.
GPIO - OE
Output enable, active low. Tie low or drive from MCU for blanking.
GPIO - MR
Master reset, active low. Tie high or drive from MCU.
GPIO - Q0-Q7
Eight latched parallel outputs to LEDs, transistor bases, relays, or downstream logic.
Signal
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