MM74C221N

Multivibrators Overview

The MM74C221N is a dual monostable multivibrator manufactured by onsemi, housed in a 16-lead Plastic Dual-In-Line Package (PDIP). It operates within a supply voltage range of 4.5V to 15V and supports an operating temperature range from -55°C to +125°C. The device features two independent circuits with propagation delays ranging from 120ns to 500ns depending on voltage. Output drive capabilities include source and sink currents up to 8mA at 10V. Pulse width stability is maintained across the specified temperature and voltage ranges.

Multivibrators Feature Summary

• Features negative-transition-triggered and positive-transition-triggered inputs for flexible triggering configurations.
• Provides high noise immunity with a guaranteed noise margin of 1.0V.
• Compatible with low power TTL logic, supporting a fan-out of 2 driving 74L loads.
• Output pulse width remains stable over a wide range of temperatures and supply voltages.

Multivibrators Applications

• Timing generation using external RC components
• Pulse width modulation circuits
• Debouncing switches or contacts

Multivibrators Procurement Notes

Verify component authenticity through authorized channels as this part may be subject to obsolescence. Confirm RoHS compliance status prior to integration. Ensure the supplier provides valid traceability documentation. Check for potential lead time variations due to manufacturing lifecycle stages. Validate that the package type matches the PCB footprint requirements exactly.

Multivibrators Selection Notes

Select this component when dual independent monostable timing functions are required in a single package. Consider the wide supply voltage range for systems operating between 4.5V and 15V. Evaluate the PDIP package for through-hole mounting needs. Verify that the propagation delay specifications meet the system timing constraints under the intended operating voltage and temperature conditions.

Multivibrators Part Context

This device belongs to the 74C series of complementary MOS logic integrated circuits. It serves as a functional equivalent to other monostable multivibrators within the standard logic family. The MM74C221N provides a robust solution for timing applications requiring CMOS technology characteristics such as low static power consumption and high noise immunity.

Multivibrators Replacement Considerations

Direct substitutes include SN74LS221N and CD74HCT123E. Note that these alternatives may differ in logic family characteristics, speed, and voltage requirements. Verify pinout compatibility and electrical parameter alignment before substitution.