M74HC374B1R

Flip Flops Overview

The M74HC374B1R is an octal D-type flip-flop with 3-state outputs manufactured by STMicroelectronics. It utilizes silicon gate C2MOS technology for high-speed operation. The device features a supply voltage range of 2V to 6V and operates within a temperature range of -55°C to 125°C. It is housed in a 20-DIP package (0.300", 7.62mm) with positive edge triggering. Key electrical parameters include a maximum propagation delay of 38ns at 4.5V with 150pF load, output currents of 7.8mA, and static current of 4µA. The component is currently obsolete.

Flip Flops Feature Summary

• Octal D-type flip-flop architecture with tri-state outputs
• High-speed CMOS fabrication using C2MOS technology
• Wide operating voltage range supporting 2V to 6V
• Extended industrial temperature rating from -55°C to 125°C

Flip Flops Applications

• Digital data storage systems
• Data transmission circuits
• Parallel-to-serial conversion modules
• Buffering applications in digital logic designs

Flip Flops Procurement Notes

This component is officially classified as obsolete and no longer manufactured by STMicroelectronics. Procurement should focus on verified substitute part numbers such as the CD74HCT374E or SN74HCT374N from Texas Instruments. Verify compatibility regarding voltage levels and package dimensions before integration. Ensure sourcing channels provide authentic components to avoid counterfeit risks associated with end-of-life products.

Flip Flops Selection Notes

Select this component only if legacy compatibility with the 20-DIP package and specific HC series logic levels is required. Note that the HCT series substitutes operate at different voltage thresholds compared to the HC series. Evaluate thermal requirements against the -55°C to 125°C range. Confirm that the 3-state output capability meets system bus isolation needs. Consider pinout differences when transitioning to alternative manufacturers.

Flip Flops Part Context

The M74HC374B1R belongs to the 74HC family of high-speed CMOS logic devices. It serves as an octal register within the broader 74xx series ecosystem. The device provides eight independent D-type flip-flops with common clock and output enable lines. It is designed for general-purpose digital applications requiring parallel data latching and controlled output driving capabilities in standard DIP packaging.

Flip Flops Replacement Considerations

Public confirmed substitutes include CD74HCT374E and SN74HCT374N from Texas Instruments. These alternatives belong to the HCT series, which may differ in input threshold voltages compared to the HC series. Verify package compatibility and logic level alignment during replacement.