The 74VHC595FT(BJ) is an 8-bit serial-in, serial or parallel-out shift register with output latches from Toshiba Semiconductor and Storage. This device belongs to the VHC (Very High-Speed CMOS) family, known for its high-speed operation and low power consumption. It is commonly used for expanding I/O capabilities in digital systems, such as driving LEDs, controlling relays, and interfacing with displays.

Applications

  
• LED displays
  
• Relay drivers
  
• Digital control circuits
  
• Serial-to-parallel data conversion

Features

  
• Serial-to-Parallel Conversion: Converts serial data into parallel data
  
• 8-Bit Storage Register: Stores 8 bits of data
  
• 3-STATE Outputs: Allows for easy connection to buses
  
• Output Latches: Provides stable outputs
  
• High-Speed Operation: tpd = 4.2 ns (typ) at VCC = 5V
  
• Low Power Consumption: ICC = 4 µA (max) at VCC = 5V

Benefits

  
• I/O Expansion: Extends the number of available I/O ports.
  
• Simplified Wiring: Reduces the number of wires required for data transfer.
  
• Versatile Control: Can be used in a variety of digital control applications.
  
• Stable Outputs: Output latches ensure stable data outputs.
  
• High-Speed Performance: Fast switching speed enables high-speed operations.
  
• Low Power Dissipation: Enhances energy efficiency.

Additional Details

The 74VHC595FT(BJ) contains an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. Separate clocks are provided for both the shift register (SH_CP) and the storage register (ST_CP). A serial output (Q7S) is provided for cascading devices. The outputs are controlled by the output enable (OE) input. When OE is LOW, the outputs are enabled; when OE is HIGH, the outputs are in a high-impedance state. The operating temperature range is typically -40°C to +85°C. The (BJ) at the end of the part number often indicates a specific tape and reel packaging option. This device is ideal for applications where a limited number of I/O pins need to control a larger number of devices and where high-speed performance and low power consumption are important considerations. The device is commonly available in a surface mount package (TSSOP or SOIC).