M74HC166RM13TR

Shift Registers Overview

The M74HC166RM13TR is an 8-bit parallel-in serial-out (PISO) shift register from the STMicroelectronics 74HC series. It operates on a supply voltage range of 2V to 6V and utilizes silicon gate C2MOS technology. The device features a maximum clock frequency of 63 MHz at 6V, with balanced propagation delays where tPLH is approximately equal to tPHL. It includes a direct asynchronous clear input that overrides all other inputs, including the clock signal. The component is housed in a 16-pin SOIC package.

Shift Registers Feature Summary

• High-speed CMOS PISO shift register architecture
• Asynchronous master reset capability overriding clock signals
• Wide operating voltage range supporting 2V to 6V operation
• Balanced propagation delays for symmetrical output impedance

Shift Registers Applications

• Serial data transmission systems
• Parallel-to-serial data conversion interfaces
• Digital logic control circuits requiring shift register functionality

Shift Registers Procurement Notes

Verify component authenticity through authorized channels as this part number may be obsolete or discontinued. Confirm exact package dimensions and pinout compatibility with existing PCB layouts before procurement. Ensure environmental compliance requirements match current project specifications. Review datasheet revisions for any updates to absolute maximum ratings or recommended operating conditions prior to final design integration.

Shift Registers Selection Notes

Select this component when an 8-bit PISO shift register with high-speed performance is required. Consider the 2V to 6V operating voltage range for compatibility with various logic families. Evaluate the 63 MHz maximum clock frequency against system timing requirements. Verify that the 16-pin SOIC package fits within available board space constraints.

Shift Registers Part Context

This component belongs to the 74HC family of high-speed CMOS logic devices manufactured by STMicroelectronics. The 74HC series is widely recognized for its compatibility with standard TTL logic levels while offering improved power dissipation characteristics compared to older HC variants. The M74HC166 specifically provides parallel loading capabilities essential for digital data processing applications.

Shift Registers Replacement Considerations

Direct substitutes include M74HC166B1R, M74HC166M1R, and M74HC166TTR.