SN74HC166PW

The SN74HC166PW is a high-speed CMOS 8-bit serial-in, parallel-out shift register manufactured by Texas Instruments. It is part of the 74HC family, which is known for its high-speed performance and low power consumption. The device is designed to facilitate the conversion of serial data into parallel data, making it useful in various digital applications such as data storage, signal processing, and communication systems.

Key Features:

1. 8-Bit Shift Register: The SN74HC166PW can store and shift 8 bits of data, allowing for efficient data handling in digital circuits.

2. Serial Input and Parallel Output: Data is input serially, meaning it is fed into the register one bit at a time, and can be output in parallel, allowing all 8 bits to be accessed simultaneously.

3. High-Speed Operation: The device operates at high speeds, with a maximum clock frequency of up to 30 MHz, making it suitable for fast data processing applications.

4. Low Power Consumption: The SN74HC166PW is designed to operate with low power, making it ideal for battery-powered devices and energy-efficient applications.

5. Wide Supply Voltage Range: It operates over a supply voltage range of 2V to 6V, providing flexibility for various circuit designs.

6. TTL Compatible: The output levels are compatible with TTL (Transistor-Transistor Logic) levels, allowing for easy integration with other digital logic devices.

7. Shift Control: The device features a shift control input that allows for the control of the shifting operation, enabling users to manage data flow effectively.

8. Asynchronous Reset: An asynchronous reset pin allows for immediate clearing of the register, setting all outputs to a low state regardless of the clock signal.

Pin Configuration:

The SN74HC166PW is typically available in a 16-pin TSSOP (Thin Shrink Small Outline Package) or other similar packages. The pin configuration includes:

• Serial Data Input (DS): The pin where the serial data is fed into the register.
• Clock Input (CLK): The pin that receives the clock signal to control the shifting of data.
• Shift Control (SH/LD): This pin determines whether the device is in shift mode or load mode.
• Reset (MR): The asynchronous reset pin to clear the register.
• Parallel Outputs (Q0 to Q7): The pins that provide the parallel output of the stored data.

Applications:

The SN74HC166PW is widely used in various applications, including:

• Data communication systems where serial data needs to be converted to parallel format.
• Microcontroller interfacing for expanding I/O capabilities.
• Digital signal processing where data needs to be shifted and manipulated.
• Memory storage applications for temporary data holding.

Conclusion:

The SN74HC166PW from Texas Instruments is a versatile and efficient 8-bit shift register that provides high-speed data handling capabilities with low power consumption. Its ability to convert serial data to parallel format makes it an essential component in many digital systems, ensuring reliable performance in a compact package.