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MM74HC221AM

Manufacturer: NS

Dual Non-Retriggerable Monostable Multivibrator

Partnumber Manufacturer Quantity Availability
MM74HC221AM NS 91 In Stock

Description and Introduction

Dual Non-Retriggerable Monostable Multivibrator **Enhance Your Digital Circuits with the MM74HC221AM Dual Monostable Multivibrator**  

The MM74HC221AM is a high-performance dual monostable multivibrator designed for precision timing applications in digital systems. Built with advanced silicon-gate CMOS technology, this component ensures low power consumption while delivering reliable performance in a wide range of operating conditions.  

Featuring two independent retriggerable monostable circuits, the MM74HC221AM provides precise pulse-width control, making it ideal for applications such as pulse generation, timing delay circuits, and frequency division. Each multivibrator can be triggered by either a rising or falling edge, offering flexibility in system design. The output pulse duration is determined by external resistors and capacitors, allowing engineers to fine-tune timing parameters to meet specific requirements.  

With a supply voltage range of 2V to 6V, the MM74HC221AM is compatible with both TTL and CMOS logic levels, ensuring seamless integration into mixed-signal environments. Its high noise immunity and robust output drive capability enhance signal integrity, even in electrically noisy conditions. Additionally, the device features a reset function for immediate pulse termination, adding an extra layer of control in time-critical applications.  

Housed in a compact 16-pin SOIC package, the MM74HC221AM is well-suited for space-constrained designs while maintaining excellent thermal and electrical performance. Whether used in industrial automation, telecommunications, or consumer electronics, this component delivers consistent accuracy and reliability.  

For engineers seeking a dependable timing solution, the MM74HC221AM stands out as a versatile and efficient choice, combining precision with ease of implementation in modern digital systems.

Application Scenarios & Design Considerations

Dual Non-Retriggerable Monostable Multivibrator

Alternative Part Number

  • SN74HC221AN --: Direct functional equivalent dual monostable multivibrator in the same HC logic family, widely available and pin-compatible in DIP package.
  • CD74HC221E --: Harris/Intersil-lineage HC221 dual monostable with equivalent logic function and timing characteristics, suitable drop-in replacement.
  • MC74HC221AN --: Motorola-lineage HC221 dual monostable multivibrator offering the same function and compatible electrical specs as the original.

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