74HC595 8 bit Serial to Parallel Shift Register IC (74595) DIP 16 Package
The 74HC595 is a high-speed CMOS 8-bit serial-in, parallel-out shift register with a storage register and 3-state output capability.
It converts serial data input into parallel data output, allowing microcontrollers to control multiple outputs (like LEDs, displays, or relays) using just a few pins.
The device has two registers:
- Shift Register — receives serial data on each clock pulse.
- Storage (Latch) Register — holds the data for output until updated, allowing smooth and flicker-free output transitions.
An Output Enable (OE) pin controls whether outputs are active or in high-impedance state, making the IC ideal for data display, output expansion, and digital control applications.
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Features:-
- Low quiescent current: 80 µA maximum (74HC Series)
- Low input current: 1 µA maximum
- 8-bit serial-in, parallel-out shift register with storage
- Wide operating voltage range: 2V–6V
- Shift register has direct clear
- Guaranteed shift frequency: DC to 30 MHz
Specifications:-
| Parameter | Specification |
| Supply Voltage (VCC | ? 0.5 to + 7.0V |
| Input Voltage (VIN) | ?1.5V to VCC + 1.5V |
| Output Voltage (VOUT) | ? 0.5 to VCC + 0.5V |
| Clamp Diode Current (IIK, IOK) | ± 20 mA |
| DC Output Current, per pin (IOUT) | ± 35 mA |
| DC VCC or GND Current, per pin (ICC) | ± 70 mA |
| Storage Temperature Range (TSTG) | ? 65°C to + 150°C |
| Power Dissipation (PD) (Note 4) | 600 mW |
| S.O. Package only | 500 mW |
| Lead Temperature (TL) (Soldering 10 seconds) | 260°C |
Applications
- LED display drivers (e.g., 7-segment or matrix displays)
- Microcontroller output expansion
- Relay or transistor driver circuits
- Digital control panels and indicators
- Serial-to-parallel data conversion
- Keypad or switch scanning systems
- Low pin-count I/O expansion for Arduino, Raspberry Pi, etc.
* Product image for illustration purposes only, actual product may vary.






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