74HC595 shift register (HC595, DIP-16)
HC595 · 8-bit serial-in shift register with output latch and tri-state outputs · 3 wires drive 8 outputs, chain more through QH′ · DIP-16 · VCC pin 16, GND pin 8

Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.
Pins
- QB
- QC
- QD
- QE
- QF
- QG
- QH
- GND
- QH′ (serial out)
- SRCLR̅
- SRCLK
- RCLK (latch)
- OE̅
- SER (data)
- QA
- VCC
Ratings and limits
| Supply | 2–6 V |
|---|---|
| Outputs | 8 latched, ±6 mA |
| Chaining | QH′ into the next SER |
How to use it
Three microcontroller pins (data, clock, latch) drive 8 outputs, or any multiple of 8 when chained.