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ST3917A from ST,ST Microelectronics

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ST3917A

Manufacturer: ST

SPEECH

Partnumber Manufacturer Quantity Availability
ST3917A ST 483 In Stock

Description and Introduction

SPEECH The ST3917A is a high-speed, low-power dual comparator manufactured by STMicroelectronics.  

### **Key Specifications:**  
- **Supply Voltage Range:** 2.7V to 5.5V  
- **Low Supply Current:** 0.6 mA per comparator (typical)  
- **Response Time:** 7 ns (typical)  
- **Input Common-Mode Voltage Range:** Includes ground (GND)  
- **Output Type:** Push-pull  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package Options:** SO-8, MiniSO-8, TSSOP-8  

### **Descriptions and Features:**  
- **High-Speed Operation:** Suitable for fast signal detection applications.  
- **Low Power Consumption:** Ideal for battery-powered devices.  
- **Rail-to-Rail Inputs:** Allows operation with signals close to supply rails.  
- **Push-Pull Output:** Eliminates the need for an external pull-up resistor.  
- **Wide Supply Range:** Supports operation from 2.7V to 5.5V.  
- **ESD Protection:** Enhanced electrostatic discharge protection.  

The ST3917A is commonly used in applications such as level detection, window comparators, and signal conditioning in portable and industrial systems.

Application Scenarios & Design Considerations

SPEECH

Alternative Part Number

  • 1N5917B --: Same 3.3V zener voltage class in a DO-41 axial package; widely available and a common cross for the ST3917A.
  • BZX85C3V3 --: 3.3V 1.3W glass zener diode with similar voltage tolerance and power rating, suitable as a functional replacement.
  • 1N4728A --: 3.3V 1W zener diode in DO-41, a standard industry part that matches the voltage and power class of the original.

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