Component Sense Blog

Now in Stock: PEF4365TV21 S LL9S | Intel® XWAY™ TSLICE Dual-Channel SLIC | Brand New, Fully Traceable, and Ready to Ship!

Written by Ash Arya | 28-May-2026

The PEF4365TV21 S LL9S from Intel is a dual-channel SLIC (Subscriber Line Interface Circuit) designed for telephone line interface applications.

If you’re working on PBX, CPE, or voice communication equipment that needs reliable FXS line interface functionality, this part is a strong choice.

This device is part of the Intel® XWAY™ product family and is described as a two-channel telephone line interface chip for PBX or CPE applications. It comes in a 36-pin DSO package and is supplied as brand-new, original, PB-free stock.

Here’s what you’re getting with this part:

Key Features of the PEF4365TV21 S LL9S 

Dual-channel telephone line interface

The PEF4365TV21 S LL9S is a two-channel SLIC, making it suitable for applications that require connecting and managing subscriber telephone lines.

Built for PBX and CPE applications

Intel describes this device as a telephone line interface chip for PBX and CPE systems, supporting voice communication equipment used in business and customer-premises environments.

36-pin DSO package

The part supports a DSO36 package, making it suitable for designs that require a compact IC package for telecom interface circuitry.

Part of the Intel® XWAY™ product family

The PEF4365TV21 S LL9S belongs to Intel’s XWAY™ product collection, which supports communication and networking-focused applications.

PB-free and RoHS compliant

This stock is listed as PB-free, helping support compliance requirements for electronics manufacturers working with RoHS-regulated products.

Applications of the PEF4365TV21 S LL9S

This part is typically used in:

  • PBX systems
  • Customer premises equipment
  • Voice communication equipment
  • FXS interface circuits
  • Broadband access equipment
  • Residential gateways
  • Office communication systems
  • Telecom infrastructure
  • Embedded communication hardware