74HC595 Shift Register Specifications

General

• IC Type: 8-bit Serial-In, Parallel-Out Shift Register with Storage Register
• Number of Bits: 8
• Package Types: DIP-16, SOIC-16
• Logic Family: High-Speed CMOS (74HC series)

Electrical Characteristics

• Operating Voltage (Vcc): 2 V – 6 V
• Input Voltage (VIH / VIL):
  • HIGH: ≥ 0.7 × Vcc
  • LOW: ≤ 0.3 × Vcc
• Output Voltage (VOH / VOL):
  • VOH (HIGH): ≥ Vcc − 0.4 V at IO ≤ 4 mA
  • VOL (LOW): ≤ 0.4 V at IO ≤ 4 mA
• Supply Current: 80 µA (typical, static)

Performance

• Maximum Clock Frequency: 25 MHz (at Vcc = 5 V)
• Propagation Delay: 8 ns (typical)
• Output Type: Tri-state for storage register outputs
• Cascadable: Yes, multiple 74HC595 ICs can be chained for more outputs

Pins / Interface

• SER – Serial Data Input
• SRCLK – Shift Register Clock Input
• RCLK – Storage Register Clock Input (latch)
• OE – Output Enable (active LOW)
• Q0–Q7 – Parallel Data Outputs
• Q7’ – Serial Data Output (for cascading)
• MR – Master Reset (active LOW)
• VCC – Power Supply
• GND – Ground

Applications

• Expanding digital outputs for microcontrollers
• LED matrix driving
• Seven-segment display control
• Digital control circuits
• Serial-to-parallel conversion