CD74HC4538ME4

Multivibrators Overview

The CD74HC4538ME4 is a high-speed CMOS logic dual retriggerable precision monostable multivibrator manufactured by Texas Instruments. It features two independent circuits in a 16-pin SOIC package, operating within a supply voltage range of 2 V to 6 V and an extended temperature range of -55°C to +125°C. The device exhibits a typical propagation delay of 21 ns with output currents of ±5.2 mA. It includes Schmitt trigger inputs for noise immunity and supports pulse width generation via external RC components.

Multivibrators Feature Summary

• Dual precision monostable multivibrators with retriggerable functionality
• Schmitt trigger inputs on A and B channels for enhanced noise immunity
• High-speed CMOS technology ensuring low power consumption and high noise immunity
• Wide operating temperature range suitable for industrial applications

Multivibrators Applications

• Pulse width modulation and timing control circuits
• Debouncing switches and touch-sensitive interfaces
• Frequency division and pulse stretching applications

Multivibrators Procurement Notes

Verify the specific suffix ME4 against current manufacturer documentation to confirm package type and compliance status. Check for product change notifications or end-of-life notices as this component may have been superseded by variants such as CD74HC4538M96G4. Ensure compatibility with existing PCB footprints and thermal requirements before finalizing procurement decisions.

Multivibrators Selection Notes

Select this component when dual independent monostable timing functions are required in a compact surface-mount package. Consider the 21 ns propagation delay and ±5.2 mA drive capability for interface requirements. Verify that the 2 V to 6 V supply range aligns with system power rails and that the -55°C to +125°C temperature range meets environmental specifications.

Multivibrators Part Context

This device belongs to the Texas Instruments 74HC series of high-speed CMOS logic devices. It is functionally compatible with other 74HC4538 variants but differs in packaging and manufacturing revisions. The ME4 designation specifically indicates a lead-free, RoHS-compliant version in a standard SOIC-16 package, distinct from tape-and-reel or alternative package options.

Multivibrators Replacement Considerations

Public confirmed substitute part numbers include CD74HC4538M96G4 and CD74HC4538MG4. Verify pinout and electrical characteristics match before substitution.