74HC4538P-E

Overview

The Renesas Electronics Corporation 74HC4538P-E is a dual retriggerable precision monostable multivibrator implemented in advanced silicon-gate CMOS technology. It features Schmitt trigger inputs for noise immunity and supports both positive and negative transition triggering with an active-low clear input. The device operates within a wide supply voltage range of 2V to 6V, ensuring compatibility with standard logic families while maintaining low power consumption characteristics typical of CMOS circuits.

Feature Summary

• Dual independent monostable multivibrator channels
• Retriggerable operation extending output pulse width
• Schmitt trigger inputs for signal conditioning
• Active-low clear input for immediate reset

Applications

• Timing delay generation
• Pulse width modulation
• Frequency division
• Debouncing switches

Procurement Notes

Verify the specific suffix 'E' against official Renesas documentation to confirm environmental compliance or temperature grade specifications. Ensure the package type matches the required PCB footprint. Confirm availability through authorized distributors as lead times may vary based on production cycles.

Selection Notes

Select this component when precise timing control with retriggering capability is required in CMOS logic designs. Consider the operating voltage range and propagation delay characteristics relative to system requirements. Verify pin compatibility with existing CD4538 or MM74HC4538 designs if cross-referencing.

Part Context

This part belongs to the 74HC series of high-speed CMOS logic devices. It functions as a monostable multivibrator, generating a single output pulse of a specific duration upon triggering. The device is designed for applications requiring reliable pulse generation and timing control in digital systems.

Replacement Considerations

Direct substitutes include the MM74HC4538 from Fairchild/ON Semiconductor and the CD74HC4538 from Texas Instruments. These parts share similar functionality and pinouts but may differ in specific electrical parameters or packaging options.