ON Semiconductor MC74HC165DR2: 8-Bit Parallel-Load Shift Registers

The MC74HC165DR2 is a high-performance CMOS 8-bit shift register designed by ON Semiconductor, offering an optimal solution for digital data storage, transfer, and manipulation in a wide range of electronic applications. This integrated circuit is particularly useful in systems where fewer data lines are available, and it efficiently converts parallel data into serial format, allowing for data expansion with minimal hardware.

The device features a parallel-load capability, enabling it to latch eight bits of data simultaneously, making it highly suitable for interfacing with parallel data buses. Its versatility is further enhanced by its two-mode operation: it can operate either as a shift-left register or a shift-right register, depending on the user's requirements.

Constructed with silicon gate CMOS technology, the MC74HC165DR2 ensures low power consumption and a broad operating voltage range of 2V to 6V. This makes it compatible with TTL levels and adaptable to various logic systems. The device's high noise immunity and low power dissipation make it a reliable choice for battery-operated and portable devices, as well as for more complex computing and control systems.

The MC74HC165DR2 comes in an SOIC-16 narrow package, which is surface-mountable, saving precious board space in compact electronic assemblies. Its pin configuration is carefully designed to facilitate easy integration into existing designs or for use in new projects.

Key features of the MC74HC165DR2 include:

• 8-bit serial or parallel input/output
• Shift left or shift right capability
• Complementary outputs
• Asynchronous master reset
• Direct overriding clear
• Compatible with all forms of logic
• Low input current of 1µA max

Applications for this shift register extend across various sectors, including consumer electronics, automotive industries, data processing equipment, and control systems. The MC74HC165DR2's reliability and ON Semiconductor's commitment to quality make it a trusted component for engineers and designers looking to enhance their digital systems.