NXP 74HC165P 8-bit Parallel-load Shift Registers

The NXP 74HC165P is a high-speed Si-gate CMOS device and is pin compatible with low-power Schottky TTL (LSTTL). It is specified in compliance with JEDEC standard no. 7A. The 74HC165P is an 8-bit parallel-load or serial-in shift registers with complementary serial outputs available from the last stage. It is designed to interface directly with high-speed CMOS systems and is a crucial component for digital systems requiring the conversion of parallel data to serial data, particularly in applications involving microprocessors or microcontrollers where input/output ports are at a premium.

The device features an 8-bit serial shift register that allows for either parallel or serial input and produces a serial output. It operates with a 2V to 6V power supply range, making it versatile for various applications. The clock input is a positive-edge triggered, and a direct clear input is provided for immediate resetting of all shift register stages.

Key features of the NXP 74HC165P include:

• Parallel or serial input capability: This allows for flexible operation modes, enabling the device to handle both parallel and serial data formats.
• Static operation: Maintains the state of the data bits as long as the power supply is present, with no minimum clock frequency required.
• Complementary outputs: Offers both Q7 and Q7' outputs for improved interfacing with subsequent stages or for creating a ring counter.
• Direct override clear: A direct input that clears the contents of the shift register, providing a fast and efficient way to reset the system.
• Standard pin configuration: Ensures compatibility with other standard logic devices and simplifies PCB layout.
• High noise immunity: Ensures stable operation in electrically noisy environments.
• Low power consumption: Ideal for battery-operated and power-sensitive applications.

The 74HC165P is available in a 16-pin plastic DIP package, making it easy to integrate into a wide range of digital systems. Its robust design and ease of use make it an excellent choice for applications such as remote control systems, data acquisition systems, and various communication interfaces where efficient data aggregation is required.

With the NXP 74HC165P, designers can optimize their systems for enhanced performance and reliability, while minimizing the use of valuable I/O resources. This shift register is a testament to NXP's commitment to providing innovative, high-performance integrated circuits to the electronics industry.