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ISL3871IN18 from I

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ISL3871IN18

Manufacturer: I, INTERSIL

Wireless LAN Integrated Medium Access Controller with Baseband Processor

Partnumber Manufacturer Quantity Availability
ISL3871IN18 I, INTERSIL 4150 In Stock

Description and Introduction

Wireless LAN Integrated Medium Access Controller with Baseband Processor The ISL3871IN18 is a wireless LAN (WLAN) baseband processor designed for IEEE 802.11b applications. Below are the factual details about its manufacturer, specifications, descriptions, and features:  

### **Manufacturer:**  
- **Intersil Corporation** (now part of Renesas Electronics Corporation)  

### **Specifications:**  
- **Interface:** SPI (Serial Peripheral Interface)  
- **Operating Voltage:** 3.3V  
- **Package:** 48-pin LQFP (Low-Profile Quad Flat Package)  
- **Compliance:** IEEE 802.11b standard  
- **Data Rate:** Supports 1, 2, 5.5, and 11 Mbps  
- **Modulation Schemes:** CCK (Complementary Code Keying), DQPSK (Differential Quadrature Phase-Shift Keying), DBPSK (Differential Binary Phase-Shift Keying)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
- The ISL3871IN18 is a highly integrated baseband processor for WLAN applications.  
- It includes a digital signal processor (DSP) for modulation/demodulation, MAC (Media Access Control) processing, and error correction.  
- Designed for use with external RF transceivers to form a complete 802.11b wireless solution.  

### **Features:**  
- **Integrated MAC and Baseband Processing**  
- **Supports WEP (Wired Equivalent Privacy) Encryption**  
- **Low Power Consumption**  
- **On-Chip FIFO Buffers for Data Management**  
- **Programmable Power Management Modes**  
- **Compatible with External RF Front-End Chips**  

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

Application Scenarios & Design Considerations

Wireless LAN Integrated Medium Access Controller with Baseband Processor

Alternative Part Number

  • LMH0302SQE --: Similar 3.3V cable/equalizer signal-conditioning function in a comparable package; widely available and pin-compatible in most designs.
  • MAX3815ACCM --: Equivalent cable equalizer/driver function with similar supply and signal levels, suitable as a drop-in functional replacement.
  • GS2974ACNE3 --: Alternative cable equalizer IC with comparable performance and supply requirements, usable when the original is unavailable.
  • PRISM2.5 --: The ISL3871IN18 is a PRISM 2.5 WLAN baseband/MAC chipset device; the PRISM2.5 chipset family is the direct functional equivalent and is the most reliable drop-in choice.
  • HFA3861B --: Harris/Intersil HFA3861B is a PRISM-series baseband processor used in the same 2.4 GHz WLAN chipset generation, offering comparable modulation and interface functions.
  • HFA3842 --: HFA3842 is the PRISM MAC controller companion to the ISL3871 baseband, providing an alternative when the MAC/baseband function is needed in the same WLAN design.

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