PEB 3081 F V1.4

Telecom Overview

The Infineon PEB 3081 F V1.4 is an S/T Bus Interface Circuit Extended (SBCX-X) designed to implement the four-wire S/T interface for linking ISDN terminals, network terminators, and PBX trunk lines to a central office. Operating at a supply voltage of 3.3 V ±5%, it supports TE, LT-T, LT-S, NT, and intelligent NT modes. The device features a Serial Control Interface (SCI) for host programming, a buffered 7.68 MHz oscillator clock output, and an IOM-2 interface with double clock, bit clock, and serial data strobes. It includes three general-purpose I/O pins, an LED output for activation status indication, and comprehensive interrupt structures.

Telecom Feature Summary

• Supports multiple operating modes including Terminal Equipment (TE), Line Termination Terminal (LT-T), Line Termination Station (LT-S), Network Termination (NT), and Intelligent NT.
• Integrates a Serial Control Interface (SCI) for direct microcontroller programming and configuration.
• Provides an IOM-2 interface with support for double clock, bit clock, and serial data strobes for synchronous data transfer.
• Includes dedicated pins for D-channel active indication and D-channel inhibit control.

Telecom Applications

• Linking voice/data ISDN terminals to a central office via the S/T interface.
• Implementing network terminators and PBX trunk lines in ISDN systems.
• Providing electrical and functional links compliant with ITU recommendation I.430.

Telecom Procurement Notes

Verify the specific version suffix 'F V1.4' against the official datasheet revision history to ensure compatibility with required firmware or hardware configurations. Confirm package availability in P-MQFP-44 or P-TQFP-48 formats as specified in the documentation. Check for any end-of-life notices or alternative component recommendations from Infineon Technologies AG.

Telecom Selection Notes

Select this component when designing ISDN interfaces requiring support for multiple operational modes such as TE, LT-T, LT-S, NT, and Intelligent NT. Ensure the design accommodates the 3.3 V supply voltage requirement and integrates a 7.68 MHz crystal oscillator. Verify that the host controller can interface via the Serial Control Interface (SCI) or MONITOR channel for device configuration and data access.

Telecom Part Context

The PEB 3081 is part of the SBCX-X family, serving as an enhanced successor to the SBCX PEB 2081. It offers improved functionality through additional operating modes, a serial control interface, and expanded IOM-2 capabilities. Produced in advanced CMOS technology, it provides a robust solution for ISDN interface applications requiring compliance with ITU standards.

Telecom Replacement Considerations

The previous version SBCX PEB 2081 serves as a baseline comparison but lacks SCI and some advanced modes. No direct public substitute part numbers are listed in the provided documentation. Designers should evaluate pinout and register compatibility if migrating from older SBCX variants.