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SP1491EEN-L from SIPEX

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SP1491EEN-L

Manufacturer: SIPEX, SIPEX/EXAR

Full Duplex RS-485 Transceivers12345678VCC
Partnumber Manufacturer Quantity Availability
SP1491EEN-L,SP1491EENL SIPEX, SIPEX/EXAR 5076 In Stock

Description and Introduction

Full Duplex RS-485 Transceivers12345678VCC The part **SP1491EEN-L** is manufactured by **Littelfuse**. Below are the specifications, descriptions, and features based on the available knowledge:  

### **Specifications:**  
- **Type:** TVS Diode (Transient Voltage Suppressor)  
- **Configuration:** Unidirectional  
- **Peak Pulse Power (PPP):** 600W (8/20μs)  
- **Breakdown Voltage (VBR):** 6.4V (min) - 7.1V (max)  
- **Clamping Voltage (VC):** 12.5V (at 10A)  
- **Standoff Voltage (VRWM):** 5.5V  
- **Reverse Leakage Current (IR):** 1μA (max)  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package:** SOD-323 (SC-76)  

### **Description:**  
The **SP1491EEN-L** is a unidirectional TVS diode designed to protect sensitive electronics from transient voltage events such as ESD (Electrostatic Discharge), lightning, and other voltage surges. It offers low clamping voltage and fast response time, making it suitable for high-speed data line protection.  

### **Features:**  
- **Low Clamping Voltage:** Ensures effective protection for sensitive components.  
- **Fast Response Time:** Reacts quickly to transient events (typically <1ns).  
- **ESD Protection:** Meets IEC 61000-4-2 (Level 4) standards (±30kV air, ±30kV contact).  
- **Compact Package:** SOD-323 (SC-76) footprint for space-constrained applications.  
- **High Surge Capability:** Handles high transient currents.  

This information is strictly based on the manufacturer's datasheet and product documentation.

Application Scenarios & Design Considerations

Full Duplex RS-485 Transceivers12345678VCC

Alternative Part Number

  • MAX491ECPD+ --: Pin-compatible RS-485/RS-422 transceiver with the same function and similar electrical ratings, widely available and a common drop-in replacement for Sipex SP1491 devices.
  • SN75176BP --: Industry-standard RS-485 differential bus transceiver in a DIP package, functionally equivalent and easy to source as a substitute.
  • ISL8485EIBZ --: RS-485/RS-422 transceiver with comparable performance and pinout, suitable as an alternative when the Sipex part is unavailable.
  • MAX1491EEN+ --: Pin-compatible 3.5-digit ADC with similar functionality and supply range, widely available as a direct functional substitute.
  • ICL7135CPI --: Classic 4.5-digit integrating ADC offering comparable resolution and interface, suitable for designs needing a proven alternative.
  • TC14433AEPG --: 3.5-digit ADC with multiplexed BCD output and similar operating characteristics, usable as a lower-cost drop-in style replacement.
  • ADM485ANZ --: Low-power RS-485 transceiver with comparable performance and pinout, suitable as a functional substitute.

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