MC74HC164AD

Shift Registers Overview

The MC74HC164AD is an 8-bit serial-input parallel-output shift register manufactured by onsemi. It operates within a DC supply voltage range of 2.0 V to 6.0 V and supports an operating temperature from -55°C to +125°C. The device features push-pull outputs capable of driving 10 LSTTL loads and interfaces directly with CMOS, NMOS, and TTL logic. Data is shifted on the rising edge of the clock input, while an active-low asynchronous reset overrides clock and data inputs. The component utilizes high-performance silicon-gate CMOS technology.

Shift Registers Feature Summary

• Provides serial-to-parallel conversion using two serial data inputs that allow one pin to function as a data enable control.
• Features an active-low asynchronous reset input that immediately clears all internal flip-flops regardless of clock or data states.
• Delivers push-pull outputs compatible with standard CMOS, NMOS, and TTL logic families without requiring external pull-up resistors.

Shift Registers Applications

• Serial-to-parallel data conversion in digital systems
• Driving LED displays or indicator arrays via parallel output ports
• Expanding I/O capabilities for microcontroller-based designs

Shift Registers Procurement Notes

Verify the specific package suffix matches the required form factor, as the base part number covers multiple options including SOIC-14 and TSSOP-14. Confirm RoHS compliance status and check for automotive-grade variants if AEC-Q100 qualification is necessary for the target application environment.

Shift Registers Selection Notes

Select this component when an 8-bit shift register with parallel outputs is required for low-power CMOS applications. Ensure the design accommodates the specified voltage range and temperature extremes. Consider the dual serial inputs for enabling/disabling data entry functionality during operation.

Shift Registers Part Context

This device belongs to the 74HC series of high-speed CMOS logic devices. It shares pinout compatibility with the LS164 family but offers improved power consumption characteristics typical of HC technology. The product line includes various packaging options to suit different board layout requirements.

Shift Registers Replacement Considerations

Direct pin-compatible alternatives include the SN74HC164N from Texas Instruments. Verify electrical specifications and package dimensions before substitution to ensure functional equivalence in the existing circuit design.