Texas Instruments 74HC series CD74HC595M is an 8-bit serial-in, parallel-out shift register with tri-state output latches. 16-SOIC package, 2V to 6V supply, -55°C to 125°C temperature range.
| Parameter | Value |
|---|---|
| Series | 74HC |
| Logic type | Shift Register |
| Output type | Tri-State |
| Mounting type | Surface Mount |
| Voltage | 2V ~ 6V |
| Operating temperature | -55°C ~ 125°C |
| Package | Tube |
| Function | Serial to Parallel, Serial |
| Case | 16-SOIC (0.154\", 3.90mm Width) |
| Number of elements | 1 |
| Number of bits per element | 8 |
The CD74HC595M is an 8-bit serial-to-parallel shift register with a tri-state output latch, part of the 74HC series. It operates from 2V to 6V and over -55°C to 125°C.
The CD74HC595M is the industrial-temperature variant at -55°C to 125°C. Both parts cascade identically.
This part carries an Active lifecycle status and ROHS3 compliance. No end-of-life or last-time-buy notices are known.
The CD74HC595M is rated for the full military temperature range of -55°C to 125°C, while the SN74HC595 is typically specified for commercial 0°C to 70°C. Both are 8-bit shift registers with tri-state outputs in 16-SOIC and share the same pinout and cascading logic.
Standard 16-SOIC pinout: Q1–Q7 on pins 1–7, GND pin 8, Q7S (serial out) pin 9, MR (reset) pin 10, SHCP (shift clock) pin 11, STCP (latch clock) pin 12, OE (output enable) pin 13, DS (data in) pin 14, Q0 pin 15, VCC pin 16.
Connect Q7S (pin 9) of the first register to DS (pin 14) of the next. All SHCP (pin 11) and STCP (pin 12) pins share a common clock. Each additional register adds 8 parallel outputs. OE (pin 13) can be tied low for always-on outputs.
Yes. The 2V to 6V supply range covers 5V operation directly. Connect VCC to 5V, GND to ground, and drive the SHCP, STCP, and DS pins with 5V logic from the Arduino. The tri-state outputs can drive LEDs, relays, or other 5V loads up to the 74HC output current limit.