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M74HC4538TTR from STM,ST Microelectronics

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M74HC4538TTR

Manufacturer: STM, ST

DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR

Partnumber Manufacturer Quantity Availability
M74HC4538TTR STM, ST 9963 In Stock

Description and Introduction

DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR The M74HC4538TTR is a dual retriggerable/resettable monostable multivibrator manufactured by STMicroelectronics (STM).  

### **Specifications:**  
- **Supply Voltage Range:** 2V to 6V  
- **High Noise Immunity:** CMOS technology  
- **Low Power Consumption:**  
  - 4µA (max) at 5V (quiescent current)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TSSOP-16  
- **Triggering:** Positive or negative edge  
- **Output Current:** ±25mA  
- **Propagation Delay:** Typically 45ns at 5V  

### **Descriptions:**  
- The M74HC4538TTR features two independent monostable multivibrators with retriggerable and resettable functions.  
- Each multivibrator can be triggered by either a rising or falling edge.  
- The output pulse width is determined by external timing components (resistor and capacitor).  
- It includes a reset function to terminate the output pulse prematurely.  

### **Features:**  
- **Dual Monostable Multivibrator:** Two independent circuits in one package.  
- **Retriggerable Capability:** Allows extending the output pulse by reapplying a trigger.  
- **Reset Function:** Immediate termination of the output pulse.  
- **Wide Operating Voltage:** Compatible with 2V to 6V systems.  
- **High-Speed Operation:** Suitable for timing applications.  
- **Schmitt Trigger Inputs:** Improved noise immunity.  

This information is based solely on the manufacturer's datasheet.

Application Scenarios & Design Considerations

DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR

Alternative Part Number

  • CD74HC4538M --: Same HC4538 dual retriggerable monostable multivibrator function with compatible logic family and supply range, widely available from TI.
  • MC74HC4538ADG --: Pin-compatible HC4538 dual monostable multivibrator in SOIC package, direct functional equivalent with similar propagation delays.
  • SN74HC4538DR --: HC4538 dual precision monostable multivibrator in SOIC, same logic function and voltage range, suitable drop-in replacement.
  • SN74HC4538N --: Equivalent HC4538 monostable multivibrator in DIP package, useful when through-hole mounting is acceptable and electrically compatible.

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