The MC54HC165J is an 8-bit parallel-load shift register manufactured by Freescale Semiconductor - NXP. It's designed to convert parallel data into serial data. The device features synchronous parallel loading and a serial output, along with complementary outputs. It is part of the HC (High-speed CMOS) family, offering a balance between speed and power consumption.

Applications:

• Parallel-to-serial data conversion
• Keyboard scanning
• Data acquisition systems
• Remote control transmitters
• Microprocessor data input

Features:

• High Speed: tPD = 14ns (typ) at VCC = 5V
• Low Power Dissipation: ICC = 4 μA (max) at TA = 25°C
• High Noise Immunity: VNIH = VNIL = 28 % VCC
• Output Drive Capability: 10 LSTTL Loads
• Synchronous Parallel Loading
• Serial Output
• Complementary Serial Output (Q and Q\)
• Clock Inhibit Function
• Wide Operating Voltage Range: VCC = 2V to 6V

Benefits:

• Efficient Data Conversion: Enables fast and reliable parallel-to-serial data conversion.
• Reduced Power Consumption: Low power operation is ideal for battery-powered or energy-conscious applications.
• Enhanced Noise Immunity: High noise immunity minimizes the risk of spurious data errors.
• Flexible Operation: The clock inhibit function allows for greater control over data shifting.
• Versatile Output Options: Complementary serial outputs provide flexibility in system design.

Additional Details:

The MC54HC165J operates over a wide temperature range, typically -55°C to +125°C, which is suitable for demanding industrial and military environments. The device is housed in a ceramic Dual In-Line Package (DIP), providing good mechanical strength and environmental protection. Synchronous loading allows for precise data transfer on the rising edge of the clock, ensuring data integrity. The clock inhibit input allows the clock to be effectively disabled, preventing further shifts until the inhibit is removed.