CD74HC4538PW

Multivibrators Overview

The CD74HC4538PW is a dual retriggerable precision monostable multivibrator manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and features Schmitt trigger inputs for noise immunity. The device supports positive and negative transition triggering with an inhibit function. It includes a clear input for resetting the output pulse. The component is housed in a 16-TSSOP surface-mount package and is rated for operation from -55°C to +125°C.

Multivibrators Feature Summary

• Dual retriggerable precision monostable multivibrator architecture
• Schmitt trigger inputs on A and B channels for signal conditioning
• Positive and negative transition triggered inputs with inhibit capability
• Clear input for immediate reset of the one-shot output

Multivibrators Applications

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

Multivibrators Procurement Notes

Verify the specific suffix 'PW' corresponds to the TSSOP-16 package variant. Confirm RoHS compliance status as indicated by manufacturer documentation. Ensure the ordering part number matches the required lead time and packaging format, such as tape and reel or cut tape, before finalizing procurement orders.

Multivibrators Selection Notes

Select this component when precise timing control with retriggering capability is required. The HC series offers high-speed performance comparable to low-power Schottky TTL while maintaining CMOS noise immunity. Verify that the external resistor and capacitor values align with the desired pulse width equation provided in the datasheet.

Multivibrators Part Context

This device belongs to the CD74HC4538 family of high-speed CMOS logic components. It is pin-compatible with other standard monostable multivibrators like the CD4528 and CD4538. The component is designed for applications requiring reliable pulse generation with wide temperature stability across industrial ranges.

Multivibrators Replacement Considerations

CD74HC4538MG4

Multivibrators FAQ

Can the CD74HC4538PW be configured as non-retriggerable?

Yes, the device can be connected as a non-retriggerable monostable multivibrator using specific terminal connections as detailed in the datasheet.

What is the function of the Clear input?

Taking the Clear input low resets the one-shot, forcing the output to its inactive state regardless of the current trigger condition.