Texas Instruments SN74HC595N 8-bit Shift Register (PDIP-16)
Texas Instruments SN74HC595N, an active 16-pin PDIP 8-bit serial-in/parallel-out shift register with a separate 3-state output register.
Texas Instruments SN74HC595N, an active 16-pin PDIP 8-bit serial-in/parallel-out shift register with a separate 3-state output register.
Logic supply; use 3.3V for direct ESP32/Pico GPIO compatibility.
Ground reference
Serial data input from MCU.
Shift-register clock input from MCU.
Storage/latch clock input from MCU.
Output enable, active low. Tie low or drive from MCU for blanking.
Master reset, active low. Tie high or drive from MCU.
Eight latched parallel outputs to LEDs, transistor bases, relays, or downstream logic.
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| VCC | power | Logic supply; use 3.3V for direct ESP32/Pico GPIO compatibility. | 3.3 | |
| GND | ground | Ground reference | ||
| DS | digital | Serial data input from MCU. | ||
| SH_CP | digital | Shift-register clock input from MCU. | ||
| ST_CP | digital | Storage/latch clock input from MCU. | ||
| OE | digital | Output enable, active low. Tie low or drive from MCU for blanking. | ||
| MR | digital | Master reset, active low. Tie high or drive from MCU. | ||
| Q0-Q7 | data | Eight latched parallel outputs to LEDs, transistor bases, relays, or downstream logic. |
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