MM74HC165MX

Shift Registers Overview

The MM74HC165MX is an 8-bit parallel-in/serial-out shift register from the onsemi HC logic family, housed in a 16-lead SOIC package. It operates within a supply voltage range of 2V to 6V and supports temperatures from -40°C to +85°C. Key electrical parameters include a typical propagation delay of 20 ns (clock to Q), maximum quiescent supply current of 80 μA, and a fanout capability of 10 LS-TTL loads. The device features a gated clock input with inhibit functionality and complementary outputs.

Shift Registers Feature Summary

• Parallel loading enabled by low-level SHIFT/LOAD input independent of clock state
• Gated clock input allows CLOCK INHIBIT function via NOR gate configuration
• Complementary output available for the eighth bit stage
• Functionally and pin-out compatible with standard 74LS logic family

Shift Registers Applications

• Data acquisition systems requiring serial-to-parallel conversion
• Keyboard scanning matrices
• Memory expansion interfaces
• Industrial control signal processing

Shift Registers Procurement Notes

Verify the specific suffix 'MX' against official datasheets to confirm the SOIC package and tape/reel availability. Ensure compatibility with existing PCB footprints for 16-lead Small Outline Integrated Circuits. Confirm operating temperature ranges meet system requirements for industrial or commercial environments.

Shift Registers Selection Notes

Select this component when parallel-to-serial data conversion is required with high noise immunity. The HC series offers lower power consumption compared to older technologies while maintaining TTL drive capabilities. Consider the gated clock feature if clock inhibition is necessary for system synchronization without additional logic gates.

Shift Registers Part Context

This device belongs to the MM74HC165 series of 8-bit shift registers. It utilizes advanced silicon-gate CMOS technology for low power consumption and high noise immunity. The series is designed to interface directly with TTL logic levels, simplifying integration into mixed-technology digital systems.

Shift Registers Replacement Considerations

Check for direct pin-compatible alternatives within the same logic family. Verify that any substitute maintains the 2V to 6V operating voltage range and similar propagation delays. Ensure the replacement package matches the 16-lead SOIC form factor for board compatibility.