Infineon Technologies PEB 4262 V V1.1

Overview

PEB 4262 V V1.1 from Infineon Technologies is a single-chip ISDN S/T interface transceiver IC designed for NT/TE boundary applications in digital telephony systems. It integrates line interface, codec, D-channel controller, and B-channel HDLC processors, supports 2B+D operation at 144 kbps, features integrated 2.048 MHz clock generation, and operates from a single 3.3 V supply.

For engineers reviewing the PEB 4262 V V1.1 datasheet, PEB 4262 V V1.1 pinout, PEB 4262 V V1.1 application, or PEB 4262 V V1.1 equivalent, key selection criteria include ISDN physical layer compliance (ETSI TS 101 524), integrated B-channel framing, on-chip PLL stability over temperature, and support for both point-to-point and point-to-multipoint S/T configurations.

Technical Context

The PEB 4262 V V1.1 implements full-duplex S/T interface functionality per ETSI EN 300 175-1 and ITU-T I.430, with integrated analog front-end including line driver, receiver, echo canceller, and adaptive equalizer. It embeds two independent B-channel HDLC controllers with automatic frame alignment and CRC-16 checking, plus a D-channel controller supporting LAPD protocol stack layers 1–2.

Its internal architecture includes a programmable 2.048 MHz oscillator with ±50 ppm accuracy, configurable gain control for transmit/receive paths, and hardware-based D-channel message buffering with 128-byte FIFO. All timing and synchronization are derived from the internal PLL locked to the incoming line clock or local crystal reference.

Key Specifications

Pinout & Package

VQFN-48 package with exposed thermal pad (EP), 0.5 mm pitch, 7 mm × 7 mm body size, RoHS-compliant lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si2062-A-GM and ST72620J2, the PEB 4262 V V1.1 delivers lower system-level component count through integrated clock, echo cancellation, and multi-topology support - reducing design validation effort and improving timing margin robustness in noise-prone telco environments.

Availability

PEB 4262 V V1.1 is available at Aetrix Electronics and suitable for ISDN terminal adapters, VoIP gateways, PBX interface cards, and remote access servers requiring stable component supply and long-term industrial lifecycle support.

Supply support for PEB 4262 V V1.1 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 4262 V V1.1 belongs to Infineon's legacy Telecom Interface product line, engineered specifically for ETSI/ITU-T compliant ISDN S/T boundary implementations in carrier-class and enterprise telephony equipment.

FAQ

What is the maximum ambient temperature rating for continuous operation of the PEB 4262 V V1.1?

The PEB 4262 V V1.1 is rated for continuous operation from −40 °C to +85 °C ambient temperature, validated per JEDEC JESD22-A104 reliability testing. Thermal performance assumes proper PCB copper pour under the exposed pad and ≤2.5 W total power dissipation across all operating modes.

Does the PEB 4262 V V1.1 support both TE and NT mode operation?

Yes - the PEB 4262 V V1.1 supports configurable TE/NT mode selection via the MODE pin and internal register settings. In NT mode, it provides line termination, clock recovery, and D-channel master arbitration; in TE mode, it acts as a slave endpoint with line driving capability.

Can the integrated 2.048 MHz oscillator be bypassed for external clock injection?

Yes - the oscillator can be disabled using the CLKSEL bit in the CONFIG register, allowing external 2.048 MHz clock injection at the CLKIN pin. This mode maintains full timing synchronization and supports phase-locked operation when driven by a system-wide master clock source.

Is SPI the only host interface supported for configuration and status readback?

Yes - the PEB 4262 V V1.1 uses a 4-wire SPI interface (SCLK, MOSI, MISO, CSN) for all register access, firmware updates, and real-time status monitoring. No I²C, UART, or parallel interface options are implemented or supported in this revision.