CD74HC166MG4

Shift Registers Overview

The CD74HC166MG4 is an 8-bit parallel-in/serial-out shift register manufactured by Texas Instruments. It belongs to the SN74HC166A family and utilizes high-speed CMOS technology. The device operates within a supply voltage range of 2V to 6V and features push-pull outputs. It is housed in a 16-SOIC package with a maximum propagation delay of 30 ns at 6V. The component supports asynchronous clear, serial data input, and clock enable functions. It is qualified for automotive applications under AEC-Q100 standards and operates across a temperature range of -55°C to 125°C.

Shift Registers Feature Summary

• Provides eight-bit parallel-to-serial data conversion capability using high-speed CMOS logic.
• Features asynchronous clear functionality to reset all flip-flops independently of the clock signal.
• Includes a clock enable input to control data shifting operations without affecting stored state.
• Delivers push-pull outputs for robust driving capability across the specified voltage range.

Shift Registers Applications

• Automotive electronic systems requiring AEC-Q100 qualified logic components
• Industrial control interfaces for expanding I/O capabilities
• Data acquisition systems utilizing parallel-to-serial conversion

Shift Registers Procurement Notes

Verify the specific suffix G4 indicates lead-free status and RoHS compliance during procurement. Confirm the SOIC-16 package dimensions match the design footprint requirements. Ensure the AEC-Q100 qualification aligns with target automotive reliability standards. Check for any recent product change notices that may affect pinout or electrical characteristics before finalizing orders.

Shift Registers Selection Notes

Select this component when an 8-bit parallel-in/serial-out shift register is required for HC-speed applications. It is suitable for designs needing a wide operating voltage range from 2V to 6V. Consider the SOIC-16 package for surface-mount assembly constraints. Verify that the asynchronous clear and clock enable features meet the system's control logic requirements.

Shift Registers Part Context

This part is a member of the SN74HC166A family of 8-bit shift registers. It shares functional compatibility with other devices in the 74HC166 series but offers specific packaging and qualification attributes. The MG4 designation identifies the manufacturer-specific tape-and-reel packaging and lead-free composition within the broader product line.

Shift Registers Replacement Considerations

Direct replacements include the CD74HC166M variant without the G4 suffix for non-lead-free requirements. Other compatible parts in the 74HC166 family may be used if package and electrical specifications are identical. Verify pinout compatibility before substituting with similar devices from different manufacturers.