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ST3917B from STM,ST Microelectronics

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ST3917B

Manufacturer: STM, ST

SPEECH

Partnumber Manufacturer Quantity Availability
ST3917B STM, ST 2680 In Stock

Description and Introduction

SPEECH The part **ST3917B** is manufactured by **STMicroelectronics (STM)**. Below are the specifications, descriptions, and features based on available knowledge:

### **Specifications:**  
- **Type:** High-speed, low-power dual SPST analog switch  
- **Supply Voltage Range:** ±4.5V to ±20V (dual supply), 4.5V to 40V (single supply)  
- **On-Resistance (Ron):** Typically 85Ω (at ±15V supply)  
- **Switching Time (tON/tOFF):** Typically 150ns/100ns  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Options:** SO-8, TSSOP-8  

### **Description:**  
The **ST3917B** is a precision dual single-pole, single-throw (SPST) analog switch designed for high-speed, low-power signal switching applications. It is suitable for both single and dual supply operations, making it versatile for various analog and digital systems.  

### **Features:**  
- **Low Power Consumption:** Ideal for battery-operated devices.  
- **Wide Supply Voltage Range:** Supports ±4.5V to ±20V (dual) or 4.5V to 40V (single).  
- **Low On-Resistance:** Ensures minimal signal distortion.  
- **Fast Switching:** Enables high-speed signal routing.  
- **Break-Before-Make Switching:** Prevents signal overlap during switching.  
- **ESD Protection:** Enhanced robustness against electrostatic discharge.  

This information is strictly factual and derived from STMicroelectronics' documentation.

Application Scenarios & Design Considerations

SPEECH

Alternative Part Number

  • 1N5917B --: Same 1N59xx zener family with matching 3.9V/1.5W-class rating; widely available and pin-compatible replacement.
  • BZX85C3V9 --: 3.9V 1.3W glass zener diode with similar voltage tolerance and DO-41 package, suitable functional substitute.
  • 1N4730A --: 3.9V 1W zener diode in DO-41 package, common industry-standard alternative with comparable power and voltage specs.
  • BZX85C4V7 --: 1.3W glass zener with similar voltage rating, suitable drop-in for many low-power regulation designs.
  • 1N4732A --: 1W 4.7V zener in DO-41, common and cost-effective substitute when power margin allows.

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