MC74HC165AFL1

Shift Registers Overview

The MC74HC165AFL1 is an 8-bit serial or parallel-input/serial-output shift register manufactured by onsemi. It utilizes high-performance silicon-gate CMOS technology and features a pinout identical to the LS165. The device allows data loading in parallel or serial form, with asynchronous parallel loading controlled by the Serial Shift/Parallel Load input. It supports complementary outputs from the last stage and includes a 2-input NOR clock for independent clock sources or clock inhibition.

Shift Registers Feature Summary

• Asynchronous parallel data loading capability when the Serial Shift/Parallel Load input is low
• Serial shifting operation triggered on the rising edge of Clock or Clock Inhibit inputs
• Compatible with standard CMOS outputs and LSTTL outputs using pullup resistors
• High noise immunity characteristic inherent to CMOS devices

Shift Registers Applications

• Data acquisition systems requiring parallel-to-serial conversion
• Keyboard scanning matrices
• Memory expansion interfaces
• Status monitoring circuits

Shift Registers Procurement Notes

Verify the specific suffix FL1 against official datasheets to confirm package type and tape/reel specifications. Ensure compliance with RoHS directives if lead-free status is required. Confirm operating voltage range matches system requirements before integration. Cross-reference part numbers with manufacturer documentation to avoid counterfeit components.

Shift Registers Selection Notes

Select this component when an 8-bit shift register with parallel load functionality is needed. It serves as a direct pin-compatible replacement for LS165 equivalents. Consider its CMOS compatibility and noise immunity for digital signal processing applications. Verify power supply constraints align with the specified operating voltage range.

Shift Registers Part Context

This component belongs to the HC165 family of shift registers. It is designed for general-purpose digital logic applications. The device integrates 286 FETs or 71.5 equivalent gates. It is part of onsemi's broader portfolio of logic integrated circuits.

Shift Registers Replacement Considerations

The MC74HC165A is functionally identical to the LS165 in pinout. Check for compatible alternatives such as SN74HC165 or CD4021B if sourcing constraints exist. Ensure voltage levels and output drive capabilities match the target application.