74HC165D,653

The 74HC165D,653 is an 8-bit parallel-in/serial-out shift register from Nexperia, designed for high-speed digital applications. It is part of the 74HC (High-speed CMOS) family, which is known for its low power consumption and high-speed operation. Here’s a detailed description of its features and specifications:

Package and Pin Configuration:

• Package Type: The 74HC165D,653 is typically available in a 16-pin Dual In-line Package (DIP) or surface-mount packages, such as SOIC (Small Outline Integrated Circuit).
• Pin Count: 16 pins, with specific functions assigned to each pin.

Functional Description:

• Parallel Input: The device allows for 8 bits of data to be loaded in parallel. This means that you can input 8 separate bits of data simultaneously.
• Serial Output: After loading the data, the device can shift the bits out serially, one bit at a time, through a single output pin. This is useful for applications where data needs to be transmitted over a limited number of wires.
• Shift Register Operation: The 74HC165D operates as a shift register, meaning that it can shift the data stored in it to the right with each clock pulse. This allows for easy manipulation and transfer of data.

Key Features:

• High-Speed Operation: The device can operate at high frequencies, making it suitable for fast digital circuits.
• Low Power Consumption: Being part of the HC family, it consumes less power compared to other logic families, which is beneficial for battery-operated devices.
• Wide Supply Voltage Range: It typically operates within a supply voltage range of 2V to 6V, making it versatile for various applications.
• TTL Compatible: The outputs are compatible with TTL (Transistor-Transistor Logic) levels, allowing for easy interfacing with other digital logic devices.
• Asynchronous Reset: The device features an asynchronous reset pin, which allows for immediate clearing of the register regardless of the clock state.

Electrical Characteristics:

• Input Voltage Levels: The input high voltage (VIH) and input low voltage (VIL) levels are defined to ensure proper operation within the specified voltage range.
• Output Drive Capability: The outputs can typically drive a certain amount of current, making it suitable for driving LEDs or other loads directly.

Applications:

• Data Communication: Ideal for applications where data needs to be transmitted serially, such as in communication protocols.
• Microcontroller Interfacing: Commonly used to expand the number of input/output pins available on microcontrollers.
• LED Control: Can be used to control multiple LEDs with fewer pins by shifting data to control each LED individually.

Conclusion:

The 74HC165D,653 from Nexperia is a versatile and efficient component for digital circuit design, providing an effective means of data handling through its parallel-in/serial-out architecture. Its combination of high-speed performance, low power consumption, and ease of use makes it a popular choice among engineers and hobbyists alike.