Infineon Technologies PEB 24911 H V1.3

Overview

PEB 24911 H V1.3 from Infineon Technologies is a single-chip ISDN S/T interface transceiver IC supporting full-duplex 2B+D operation at 160 kbps, featuring integrated line driver, receiver, echo canceller, and D-channel controller in a 64-pin MQFP package. It enables direct connection to ISDN basic rate interfaces in terminal adapters and NT1 devices for European PSTN networks.

For engineers reviewing the PEB 24911 H V1.3 datasheet, PEB 24911 H V1.3 pinout, PEB 24911 H V1.3 application, or PEB 24911 H V1.3 equivalent, key selection criteria include B-channel differential output swing (±2.5 V), D-channel bit rate (16 kbps), echo cancellation depth (≥30 dB), and compliance with ETS 300 012-1 and EN 300 012-1 standards.

Technical Context

The PEB 24911 H V1.3 implements a fully integrated ISDN S/T physical layer transceiver with on-chip 2B+D framing, adaptive echo cancellation, and line impedance matching for 135 Ω balanced termination. It supports both TE and NT operating modes via configurable control pins and includes built-in test registers for loopback and diagnostic access.

Its digital interface uses an 8-bit parallel bus with separate read/write strobes and interrupt signaling, synchronized to a 16.384 MHz master clock. The device requires only external passive components for line coupling and filtering, eliminating need for discrete transformers or op-amps in standard implementations.

Key Specifications

Pinout & Package

Package: 64-pin plastic metric quad flat pack (MQFP), 14 mm × 14 mm body, 0.5 mm lead pitch, exposed thermal pad (EP).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ISDN S/T interface applications.

Compared with SI2060-A-GM and ST72674J6, the PEB 24911 H V1.3 delivers complete S/T layer 1 integration-including echo cancellation, NT-mode line driving, and D-channel controller-in a single chip, reducing PCB area by ~35% and eliminating four external ICs in typical NT1 designs.

Availability

PEB 24911 H V1.3 is available at Aetrix Electronics and suitable for ISDN terminal adapters, NT1 network termination units, and ISDN PBX interface cards requiring stable component supply across extended product lifecycles.

Supply support for PEB 24911 H V1.3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, industrial, and communications ICs, with global R&D and manufacturing infrastructure.

The PEB 24911 H V1.3 belongs to Infineon's legacy telecom interface product line, designed specifically for ETSI-compliant ISDN S/T physical layer implementation in carrier-class and enterprise-grade terminal equipment.

FAQ

What clock frequency is required for normal operation of the PEB 24911 H V1.3?

The PEB 24911 H V1.3 requires a precise 16.384 MHz master clock applied to the CLKIN pin. This frequency is mandated by ITU-T I.430 for ISDN S/T layer 1 timing synchronization and enables correct B-channel bit sampling, D-channel framing, and internal PLL operation. Deviation beyond ±50 ppm violates ETS 300 012-1 conformance.

Does the PEB 24911 H V1.3 support both TE and NT operating modes?

Yes, the PEB 24911 H V1.3 supports both TE (terminal equipment) and NT (network termination) modes. Mode selection is controlled by the MODE pin: logic high configures NT mode with line feeding capability, while logic low selects TE mode. Internal line driver biasing and impedance matching automatically adapt to the selected role per ETSI specifications.

Can the PEB 24911 H V1.3 operate without external line coupling transformers?

Yes-the PEB 24911 H V1.3 integrates active line drivers and receivers optimized for direct connection to 135 Ω balanced ISDN lines. External transformers are not required for basic compliance; however, optional isolation transformers may be added for enhanced surge protection or galvanic isolation in specific installations.

What is the function of the INT pin on the PEB 24911 H V1.3?

The INT pin is an active-low open-drain interrupt output signaling critical events including loss of frame synchronization, D-channel CRC errors, FIFO overflow/underflow, and transition between TE/NT modes. It allows the host controller to respond asynchronously without polling, reducing software latency in time-critical ISDN signaling sequences.