MM74C164N

Shift Registers Overview

The MM74C164N is an 8-bit serial-in, parallel-out shift register manufactured by Fairchild Semiconductor. It belongs to the 74C CMOS logic family and features two gated serial inputs (A and B) along with a dedicated clock input and an asynchronous clear terminal. The device converts serial data into parallel outputs through eight non-inverting Q terminals. It operates within a supply voltage range of 3V to 15V and supports a wide operating temperature range from -55°C to +125°C. The component is housed in a 14-pin plastic dual in-line package (PDIP).

Shift Registers Feature Summary

• Features gated serial inputs that inhibit new data entry when either input is low.
• Includes an asynchronous clear function to reset the first flip-flop to a low level.
• Provides complete control over incoming data sequences via input gating.
• Delivers parallel output data through eight non-inverting terminals.

Shift Registers Applications

• Data acquisition systems requiring serial-to-parallel conversion.
• Industrial control interfaces for expanding I/O capabilities.
• Communication equipment utilizing TTL or CMOS logic levels.

Shift Registers Procurement Notes

Verify the specific manufacturer origin as Fairchild Semiconductor, noting that onsemi has acquired Fairchild's logic business. Confirm the PDIP-14 package style matches the design requirements. Ensure the component meets the required industrial temperature specifications (-55°C to +125°C) for the intended environment. Check RoHS compliance status against current regulatory standards before finalizing procurement.

Shift Registers Selection Notes

Select this component when a robust 8-bit shift register with high noise immunity is required. The 74C series offers standard CMOS performance suitable for general-purpose logic applications. Consider the wide supply voltage flexibility if the system operates between 3V and 15V. Verify that the asynchronous clear feature aligns with the system's reset timing requirements.

Shift Registers Part Context

This part is part of the widely used 7400-series logic family, specifically the 74C variant which utilizes CMOS technology. It serves as a fundamental building block for digital circuits needing data storage and transfer functions. The MM74C164N provides a reliable solution for converting serial streams into parallel formats for microprocessor interfacing or display driving applications.

Shift Registers Replacement Considerations

Consider the MC74HC164N for higher speed operation within a narrower voltage range. The MM74LS164N is an alternative for TTL-compatible systems but requires different power management. Verify pin compatibility and logic level thresholds when substituting with other manufacturers' equivalents.