The TC74VHC595FN is a high-speed CMOS 8-bit shift register with output latches, manufactured by Toshiba Semiconductor and Storage. This device is designed for applications requiring serial-to-parallel data conversion, remote control, display driving, and similar functions. The '595 combines an 8-bit serial-in, parallel-out shift register with an 8-bit storage register, providing both serial and parallel outputs.

Applications

• LED Displays: Used to control multiple LEDs with a minimum number of microcontroller pins.
• Remote Control Systems: Employed in remote control receivers for decoding serial data.
• Serial-to-Parallel Data Conversion: Utilized in applications where serial data needs to be converted to parallel data.
• Digital Logic Circuits: Integrated into various digital logic circuits requiring shift register functionality.
• Microcontroller Peripherals: Used to expand the output capabilities of microcontrollers.

Features

• High-Speed Operation: Offers fast clock speeds for efficient data transfer.
• CMOS Technology: Utilizes CMOS technology for low power consumption.
• 8-Bit Shift Register: Contains an 8-bit serial-in, parallel-out shift register.
• 8-Bit Output Latch: Includes an 8-bit storage register for holding parallel data.
• 3-State Outputs: Features 3-state outputs for bus interfacing and data isolation.
• Serial Output for Cascading: Provides a serial output pin for cascading multiple devices.

Benefits

• Reduced Microcontroller Pin Usage: Controls multiple outputs with just a few microcontroller pins.
• Energy Efficiency: Low power consumption makes it suitable for battery-powered applications.
• Simplified Circuit Design: Combines shift register and storage register functionality in one IC.
• Expandable Output Capability: Cascading allows for controlling a large number of outputs.
• Versatile Applications: Suitable for a wide range of applications requiring serial-to-parallel conversion.

Additional Details

The TC74VHC595FN typically operates with a supply voltage of 2V to 5.5V. The clock frequency can reach up to several tens of MHz, depending on the operating voltage and load conditions. The device is commonly available in surface-mount packages such as SOIC or TSSOP. The operating temperature range usually spans from -40°C to +85°C. Data is shifted into the shift register on the rising edge of the shift register clock (SH_CP). The data is then transferred to the output register on the rising edge of the storage register clock (ST_CP). The output enable (OE) pin, when low, enables the outputs, and when high, the outputs are in a high-impedance state.