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SN54221J from TI,Texas Instruments

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SN54221J

Manufacturer: TI

Dual Monostable Multivibrators With Schmitt-trigger Inputs

Partnumber Manufacturer Quantity Availability
SN54221J TI 55 In Stock

Description and Introduction

Dual Monostable Multivibrators With Schmitt-trigger Inputs The SN54221J is a dual monostable multivibrator manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Logic Family:** TTL (Transistor-Transistor Logic)  
- **Supply Voltage Range:** 4.75V to 5.25V  
- **Operating Temperature Range:** 0°C to +70°C  
- **Package Type:** Ceramic DIP (Dual In-line Package)  
- **Number of Circuits:** 2 (Dual Monostable)  
- **Trigger Type:** Positive or Negative Edge  
- **Output Type:** Standard  
- **Propagation Delay:** Typically 35ns  

### **Descriptions:**  
- The SN54221J is a high-speed dual monostable multivibrator designed for precision timing applications.  
- It features independent trigger and reset inputs for each monostable circuit.  
- The device is compatible with standard TTL logic levels.  

### **Features:**  
- **Dual Monostable Multivibrator:** Contains two independent one-shot circuits.  
- **Wide Operating Voltage Range:** Optimized for 5V operation.  
- **Adjustable Pulse Width:** External timing components (resistor and capacitor) allow pulse width customization.  
- **Schmitt Trigger Inputs:** Ensures noise immunity on trigger inputs.  
- **Direct Reset Capability:** Each monostable can be reset before the output pulse completes.  
- **High-Speed Operation:** Suitable for fast digital timing applications.  

This information is based solely on the technical specifications and features of the SN54221J from Texas Instruments.

Application Scenarios & Design Considerations

Dual Monostable Multivibrators With Schmitt-trigger Inputs

Alternative Part Number

  • MC14538BCP --: Dual precision monostable multivibrator with similar trigger and timing functions, widely available and pin-compatible in many designs.
  • CD74HC221E --: High-speed CMOS dual monostable multivibrator offering comparable retriggerable pulse generation with lower power consumption.
  • 74LS221 --: Dual retriggerable monostable multivibrator in the standard 74LS logic family, a common drop-in functional replacement for the 54221 series.
  • DM74LS221N --: Same dual monostable multivibrator function with LS TTL logic, widely available and pin-compatible in DIP package.

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