CD74HCT221MG4

Multivibrators Overview

The CD74HCT221MG4 is a high-speed CMOS logic dual 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 provides two independent circuits in a 16-SOIC package with a propagation delay of 18 ns. It supports surface-mount installation and functions across an extended temperature range from -55°C to +125°C, ensuring reliable performance in demanding environments.

Multivibrators Feature Summary

• Dual monostable multivibrator configuration with integrated reset functionality
• Schmitt-trigger inputs provide enhanced noise immunity for signal conditioning
• High-speed CMOS technology enables fast switching with low power consumption
• Extended industrial temperature rating ensures stability under thermal stress

Multivibrators Applications

• Timing pulse generation and shaping circuits
• Frequency division and counting applications
• Debouncing switches or relays to eliminate contact bounce
• Delay line implementations in digital systems

Multivibrators Procurement Notes

Verify the RoHS compliance status through official manufacturer documentation before procurement. Confirm that the specific suffix indicates lead-free packaging and halogen-free materials as required by regulatory standards. Ensure the component meets current environmental directives applicable to your region. Check for any recent product change notifications that may affect material composition or manufacturing location.

Multivibrators Selection Notes

Select this component when dual independent timing channels are required in a compact surface-mount footprint. The HCT series compatibility allows direct interfacing with standard TTL logic levels while maintaining CMOS input characteristics. Consider the 18 ns propagation delay for high-speed timing requirements. Verify that the 2 V to 6 V operating range aligns with the system power supply constraints.

Multivibrators Part Context

This part belongs to the CD74HC(T)221 family of high-speed CMOS logic devices. It serves as a dual monostable multivibrator alternative to older bipolar equivalents. The MG4 suffix typically denotes a lead-free, green package variant compliant with international environmental standards. It is designed for general-purpose timing applications requiring precise pulse width control.

Multivibrators Replacement Considerations

CD74HC221M96E4 is listed as a manufacturer-recommended substitute. Verify pinout compatibility and electrical specifications before substitution. Ensure the replacement maintains the same package dimensions and thermal characteristics.