74HC595 Shift Register

74HC595 Shift Register

250.00

The 74HC595 is an 8-bit serial-in, parallel-out shift register with an 8-bit storage register. The device features a serial data input (DS), eight parallel data outputs (Q0-Q7), and a serial output for cascading (Q7′). It is commonly used to expand the number of I/O pins available on a microcontroller, enabling control of multiple outputs with a few pins.

Key Features:

  • 8-bit serial-in, parallel-out shift register
  • 8-bit storage register with tri-state outputs
  • Serial input (DS) and serial output for cascading (Q7′)
  • Three-state outputs (Q0-Q7)
  • Low power consumption
  • High-speed operation
  • Cascadable with multiple 74HC595 ICs

Technical Specifications:

  • Operating Voltage: 2V to 6V
  • Maximum Clock Frequency: 100 MHz (at Vcc = 4.5V to 5.5V)
  • Current Consumption: 80 μA (maximum, at Vcc = 6V)
  • Output Current per Pin: 35 mA (maximum)
  • Total Current through Vcc/GND: 70 mA (maximum)
  • Propagation Delay Time: 23 ns (at Vcc = 5V)
  • Package Types: 16-pin PDIP, SOIC, TSSOP
  • Operating Temperature Range: -40°C to +125°C

Applications:

  • LED displays
  • Keypad interfaces
  • Data acquisition systems
  • Digital signal processing
  • Memory addressing
  • Control systems

Usage:

  1. Connection:
    • Connect the Vcc pin to a 5V power supply (or appropriate voltage within the operating range).
    • Connect the GND pin to ground.
    • Connect the serial data input (DS) to the microcontroller’s data output pin.
    • Connect the clock input (SH_CP) and latch input (ST_CP) to the microcontroller’s clock and latch control pins.
    • Connect the parallel outputs (Q0-Q7) to the desired peripheral devices.
    • Use the serial output (Q7′) to cascade additional 74HC595 shift registers if needed.
  2. Operation:
    • Send serial data to the DS pin while providing clock pulses to SH_CP.
    • Latch the data to the output pins by providing a pulse to the ST_CP pin.
    • Control multiple 74HC595 ICs in series by connecting the Q7′ of one to the DS of the next.
  3. Programming:
    • Write code on the microcontroller to control the shift register.
    • Shift in data bits and latch them to update the outputs as needed.

Caution:

  • Ensure the supply voltage does not exceed the maximum rated voltage to avoid damage to the IC.
  • Handle the IC carefully to prevent damage from electrostatic discharge (ESD).
  • Avoid exceeding the maximum current ratings to prevent overheating and damage.

Datasheet:
For detailed technical specifications, refer to the 74HC595 Datasheet.

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SKU: 0062 Categories: ,
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