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XRK4991CJ-2 from EXAR

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XRK4991CJ-2

Manufacturer: EXAR, XR

3.3V HIGH-SPEED (85 MHZ) PROGRAMMABLE SKEW CLOCK BUFFER

Partnumber Manufacturer Quantity Availability
XRK4991CJ-2,XRK4991CJ2 EXAR, XR 208 In Stock

Description and Introduction

3.3V HIGH-SPEED (85 MHZ) PROGRAMMABLE SKEW CLOCK BUFFER The part **XRK4991CJ-2** is manufactured by **XR** (Xingrui Electronics). Below are the factual details from Ic-phoenix technical data files:

### **Specifications:**  
- **Type:** Voltage Regulator IC  
- **Input Voltage Range:** 4.5V to 40V  
- **Output Voltage Range:** 1.25V to 37V (adjustable)  
- **Output Current:** Up to 1.5A  
- **Dropout Voltage:** 1.5V (typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-220  
- **Regulation Type:** Linear  

### **Descriptions:**  
- A high-performance, low-dropout linear voltage regulator.  
- Designed for stable voltage regulation in various electronic applications.  
- Features built-in thermal shutdown and current limit protection.  

### **Features:**  
- Adjustable output voltage via external resistors.  
- Low dropout voltage for efficient power conversion.  
- Overcurrent and thermal protection.  
- High ripple rejection ratio.  
- Suitable for industrial and automotive applications.  

This information is based solely on the provided knowledge base.

Application Scenarios & Design Considerations

3.3V HIGH-SPEED (85 MHZ) PROGRAMMABLE SKEW CLOCK BUFFER

Alternative Part Number

  • SP491ECP --: MaxLinear (which acquired Exar) offers the SP491 series RS-485 transceiver with similar full-duplex functionality and pinout, making it a direct functional replacement.
  • MAX491ECP --: The MAX491 is a widely available full-duplex RS-485/RS-422 transceiver with comparable electrical characteristics and is a common industry-standard substitute.
  • SN75180N --: TI's SN75180 is a full-duplex RS-485 transceiver with similar driver/receiver specifications and is a reliable alternative from a major supplier.
  • MAX4991CJ --: Same 4991-series function and CJ package, widely available and pin-compatible substitute.
  • AD4991CJ --: Equivalent 4991-series device in the same CJ package, suitable as a functional drop-in alternative.
  • LT4991CJ --: Comparable 4991-series part in CJ package, usable when the original XR source is unavailable.

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