MC74HC164ADTR2

Shift Registers Overview

The MC74HC164ADTR2 is an 8-bit serial-input parallel-output shift register manufactured by onsemi. It operates within a supply voltage range of 2.0 V to 6.0 V and utilizes high-performance silicon-gate CMOS technology. The device features two serial data inputs, A1 and A2, which allow one input to function as a data enable. Data is clocked in on the rising edge of the clock signal. An active-low asynchronous reset overrides both the clock and serial data inputs. The component is housed in a 14-TSSOP package and supports surface-mount installation.

Shift Registers Feature Summary

• Provides serial-to-parallel conversion with eight bits of storage capacity
• Includes dual serial inputs enabling flexible data enable functionality
• Features active-low asynchronous reset for immediate output clearing
• Outputs are directly compatible with CMOS, NMOS, and TTL logic families

Shift Registers Applications

• Data acquisition systems requiring serial-to-parallel conversion
• LED display drivers for scanning patterns
• General-purpose shift register applications in digital circuits
• Memory expansion modules using serial interfaces

Shift Registers Procurement Notes

Verify the specific suffix 'G' for RoHS compliance when ordering, as the base model number may refer to older non-compliant versions. Confirm the package type is TSSOP-14 and check for automotive qualification requirements if applicable, as standard industrial versions differ from AEC-Q100 qualified parts. Ensure the supplier provides official datasheets matching the exact part number to avoid pinout mismatches with legacy LS164 equivalents.

Shift Registers Selection Notes

Select this component when an 8-bit shift register with push-pull outputs is required for low-power CMOS designs. It serves as a pin-compatible replacement for the 74LS164 but offers lower power consumption and higher noise immunity. Consider the operating temperature range and supply voltage constraints relative to the target system environment. Verify that the asynchronous reset timing meets the system's synchronization requirements.

Shift Registers Part Context

This component belongs to the 74HC series of high-speed CMOS logic devices produced by onsemi. It is functionally identical to the 74LS164 in terms of pinout but utilizes modern CMOS technology for improved performance characteristics. The device is part of a broader family of shift registers designed for general-purpose digital logic applications. It complies with JEDEC standards for CMOS operation and is available in tape-and-reel packaging for automated assembly.

Shift Registers Replacement Considerations

The MC74HC164ADTR2G is a direct equivalent with RoHS compliance. Other manufacturers offer pin-compatible alternatives such as the MM74HC164MTCX. Verify that substitute parts maintain the same 2V to 6V operating voltage range and TSSOP-14 package dimensions to ensure mechanical and electrical compatibility without circuit redesign.