CD74HCT221M

Multivibrators Overview

The CD74HCT221M is a dual monostable multivibrator manufactured by Harris Corporation, belonging to the 74HCT logic series. It operates on a single supply voltage ranging from 4.5 V to 5.5 V and features a propagation delay of 18 ns. The device is housed in a 16-SOIC surface-mount package with a wide operating temperature range spanning from -55°C to +125°C.

Multivibrators Feature Summary

• Dual independent monostable multivibrator circuits integrated into a single package
• High-speed CMOS technology ensuring fast switching performance
• Schmitt trigger inputs for noise immunity and clean signal triggering

Multivibrators Applications

• Pulse generation and timing control circuits
• Debouncing switches or contacts
• Frequency division and pulse width modulation

Multivibrators Procurement Notes

Verify component authenticity as this part may be sourced from secondary markets. Confirm RoHS compliance status, as older Harris manufacturing runs often lack modern environmental certifications. Ensure the specific suffix matches the required package variant before finalizing procurement orders.

Multivibrators Selection Notes

Select this component when precise timing intervals are required using external RC networks. The HCT series compatibility allows direct interfacing with standard TTL logic families. Verify that the 18 ns propagation delay meets system speed requirements compared to slower HC alternatives.

Multivibrators Part Context

This component is part of the broader 74HCT family of high-speed CMOS logic devices originally produced by Harris Corporation. These parts were widely used in digital systems requiring reliable monostable operations before being succeeded by newer Texas Instruments generations.

Multivibrators Replacement Considerations

CD74HCT221M96