DM74164N

Shift Registers Overview

The DM74164N is an 8-bit serial-in, parallel-out shift register manufactured by onsemi. It belongs to the DM7400 logic series and utilizes CMOS technology. The device features two gated serial inputs (A and B) and an asynchronous clear input. Data shifts on the low-to-high clock transition. It operates within a supply voltage range of 4.75V to 5.25V. Key electrical parameters include a typical propagation delay of 31ns at 5V with 15pF load and a typical power dissipation of 185mW. The maximum clock frequency is typically 36MHz. It is housed in a 14-lead Plastic Dual-In-Line Package (PDIP).

Shift Registers Feature Summary

• Features fully buffered clock and serial inputs for signal integrity.
• Includes gated serial inputs allowing enable/disable control of data entry.
• Provides asynchronous clear functionality to reset the register independently of the clock.

Shift Registers Applications

• Serial-to-parallel data conversion in digital systems.
• Parallel output expansion for microprocessor interfaces.
• General-purpose shifting operations in logic circuits.

Shift Registers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as older variants may differ. Check for obsolescence notices from onsemi. Ensure the 14-PDIP package matches PCB footprint requirements. Validate supply chain documentation against current industry standards.

Shift Registers Selection Notes

Select this component for applications requiring reliable 8-bit serial-to-parallel conversion using standard TTL-compatible CMOS levels. Consider the 36MHz typical clock speed for timing constraints. Evaluate the 14-PDIP package for through-hole mounting needs. Compare power dissipation characteristics against system thermal limits. Verify voltage compatibility with existing 5V logic families.

Shift Registers Part Context

This part is part of the DM7400 series of logic integrated circuits produced by onsemi. It serves as a fundamental building block for sequential logic designs. The device replaces earlier discrete implementations of shift registers. It maintains pin compatibility with industry-standard 74164 equivalents. The series supports various packaging options for different assembly technologies.

Shift Registers Replacement Considerations

Direct substitutes include SN74LS164N from Texas Instruments. Other compatible alternatives are CD74HC164E from Texas Instruments. Verify pinout and electrical specifications before substitution.