MC74HC164AFL1

Shift Registers Overview

The MC74HC164A is an 8-bit serial-input to parallel-output shift register manufactured by onsemi. It utilizes high-performance silicon-gate CMOS technology and operates within a voltage range of 2.0 V to 6.0 V. The device features two serial data inputs (A1, A2) that allow one input to function as a data enable. Data is shifted into the register on each rising edge of the clock signal. An active-low asynchronous reset input overrides clock and serial data inputs to clear all outputs. The component is compatible with standard CMOS outputs and LSTTL outputs when pull-up resistors are used.

Shift Registers Feature Summary

• Provides eight parallel outputs for shifting serial data
• Includes an active-low asynchronous reset function
• Features dual serial inputs allowing data enable capability
• Compatible with CMOS, NMOS, and TTL logic families

Shift Registers Applications

• Data storage in digital systems
• Serial-to-parallel conversion
• Parallel-to-serial conversion
• Frequency division circuits
• Sequence generation applications

Shift Registers Procurement Notes

Verify the specific package suffix against the ordering information table to ensure correct physical dimensions and shipping quantities. Confirm whether the -Q suffix is required for automotive or unique site control change requirements. Check RoHS compliance status and lead-free markings on the packaging documentation before finalizing procurement specifications.

Shift Registers Selection Notes

Select this component when an 8-bit shift register with parallel output is needed for HC series logic applications. Ensure the operating voltage falls between 2.0 V and 6.0 V. Consider the pinout compatibility with LS/ALS164 if replacing existing designs. Verify temperature range requirements against the specified -55°C to +125°C operating limits for the chosen package type.

Shift Registers Part Context

This device belongs to the 74HC series of high-speed CMOS logic integrated circuits. It serves as a functional equivalent to the LS164 in terms of pinout configuration. The component is part of onsemi's portfolio of silicon-gate CMOS devices designed for general-purpose digital logic applications requiring low power consumption and high noise immunity characteristics.

Shift Registers Replacement Considerations

The datasheet states the device is identical in pinout to the LS164. Designers may consider direct pin-compatible replacements from other manufacturers that adhere to the same JEDEC standard no. 7A requirements without modifying the circuit board layout.