M74HCT374B1R

Flip Flops Overview

The M74HCT374B1R is an octal D-type flip-flop manufactured by STMicroelectronics, belonging to the 74HCT logic series. It features a single element with eight bits per element and utilizes positive-edge triggering for data capture. The device operates within a supply voltage range of 4.5V to 5.5V and provides non-inverting tri-state outputs. It is housed in a 14-DIP package with a width of 0.300 inches (7.62mm). Key electrical specifications include a maximum propagation delay of 38ns at 4.5V with 150pF load, output currents of 6mA for both high and low states, and a static current of 4µA. The component supports a clock frequency of 50MHz and functions reliably across a temperature range of -55°C to 125°C.

Flip Flops Feature Summary

• Octal D-type flip-flop architecture with positive-edge triggering mechanism
• Non-inverting tri-state output configuration for bus-oriented applications
• CMOS HCT technology ensuring compatibility with TTL inputs
• Wide operating temperature range suitable for industrial environments

Flip Flops Applications

• Parallel-to-serial data conversion circuits
• Buffer registers in digital signal processing systems
• Data storage elements in microprocessor-based interfaces
• Shift register configurations for serial communication

Flip Flops Procurement Notes

This component is officially obsolete and no longer manufactured by STMicroelectronics. Sourcing new units directly from the manufacturer is not possible. Verification should focus on identifying qualified replacement parts or evaluating available surplus inventory from authorized distributors. Ensure that any substitute components meet the original pinout and electrical specifications to maintain system integrity without requiring design modifications.

Flip Flops Selection Notes

Designers requiring this specific part number must consider alternative sources due to its discontinued status. When selecting replacements, verify that the substitute maintains the same 14-DIP package dimensions and 74HCT logic family characteristics. Compatibility checks should confirm identical pin assignments and voltage levels to ensure seamless integration into existing PCB layouts without altering surrounding circuitry or power requirements.

Flip Flops Part Context

The M74HCT374B1R is part of the broader 74HCT374 product line, which includes various packaging options such as SOIC and TSSOP. This specific B1R suffix denotes the 14-DIP variant. The 74HCT series is designed to bridge the gap between older TTL logic standards and modern CMOS technologies, offering improved noise immunity and lower power consumption compared to standard 74LS counterparts while maintaining compatible input thresholds.

Flip Flops Replacement Considerations

Direct substitutes include CD74HCT374E from Texas Instruments. Similar alternatives are available from other manufacturers, but pin compatibility and electrical parameters must be verified before implementation.