Infineon Technologies PEB 3086 F V1.4

Overview

PEB 3086 F V1.4 from Infineon Technologies is an ISDN Subscriber Access Controller (ISAC-SX) IC designed for Layer-1 S/T-interface termination in digital telephony systems. It supports TE/LT-T, LT-S, and NT operating modes; integrates D-channel HDLC controller with 128-byte transmit/receive FIFOs; delivers ±100 ppm clock accuracy via internal DPLL; and implements full S/T transceiver synchronization, level detection power-down, and IOM-2 interface timing compliant with ITU-T I.430. It is used in ISDN terminal adapters, PBX line cards, and multi-channel voice gateways.

For engineers reviewing the PEB 3086 F V1.4 datasheet, PEB 3086 F V1.4 pinout, PEB 3086 F V1.4 application, or PEB 3086 F V1.4 equivalent, this page provides verified functional block architecture, confirmed IOM-2 and S/T interface timing parameters, validated register-level D-channel control behavior, and real-world deployment context for ISDN physical layer design.

Technical Context

The PEB 3086 F V1.4 implements a dual-mode S/T transceiver with programmable transmitter output levels (–15 dBm to –3 dBm) and receiver sensitivity down to –39 dBm. Its receive PLL (DPLL) achieves jitter tolerance of ±150 ns over 0–100 ppm frequency deviation and supports automatic clock recovery from incoming S/T data streams.

It features three distinct state machines-TE/LT-T, LT-S, and NT-with dedicated C/I code handling, activation/deactivation sequencing, and monitor channel handshake logic. The IOM-2 interface operates at up to 2.048 MHz with strobed bit clock and serial data strobe, supporting master/slave monitor channel configuration and TIC/S-Bus priority arbitration for D-channel access.

Key Specifications

Pinout & Package

PEB 3086 F V1.4 is housed in a 128-pin LQFP package (20 mm × 20 mm, 0.4 mm pitch) with exposed thermal pad. Pin functions are defined per Infineon DS1 V1.4 (2003), including dedicated S/T differential pairs (S+, S−, T+, T−), IOM-2 serial bus lines (SDO, SDI, SCLK, STRB), interrupt outputs (INT0, INT1), reset (RST), and auxiliary control (ACL, ENTR).

Key Features

Applications

Equivalent & Alternatives

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

Compared with PEB 3085 F V1.2, the PEB 3086 F V1.4 adds critical NT-mode support and S-transceiver sync for carrier-class deployments; versus SLICOFI PEB 2086, it offers lower power, smaller footprint, and cleaner signal integrity for pure digital ISDN applications.

Availability

PEB 3086 F V1.4 is available at Aetrix Electronics and suitable for ISDN terminal adapters, multi-line PBX line cards, and VoIP-ISDN gateways requiring stable component supply, long-term lifecycle assurance, and documented industrial temperature grade performance.

Supply support for PEB 3086 F V1.4 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 AG is a German semiconductor manufacturer specializing in power management, automotive, security, and communications ICs, with global R&D and manufacturing infrastructure.

The ISAC-SX product line-including PEB 3086-is engineered specifically for ISDN physical layer implementation, emphasizing standards compliance (ITU-T I.430), low-power operation, and integration of timing-critical analog/digital functions in single-chip solutions.

FAQ

What is the maximum supported IOM-2 clock frequency for PEB 3086 F V1.4?

The PEB 3086 F V1.4 supports IOM-2 interface operation up to 2.048 MHz, matching standard E1/T1 frame rates. This frequency is specified in Chapter 5.7.2 of the DS1 V1.4 datasheet and validated under worst-case voltage (3.135 V) and temperature (85 °C) conditions with proper PCB layout and termination.

Does PEB 3086 F V1.4 support NT-mode operation out of the box?

Yes, PEB 3086 F V1.4 natively supports NT-mode operation per ITU-T I.430 Annex A, with dedicated state machine logic, C/I code handling, and activation sequence implementation detailed in Sections 3.5.3 and 3.6.3 of the datasheet. No external configuration or firmware patch is required.

How does the DPLL in PEB 3086 F V1.4 handle jitter on the S/T line?

The receive DPLL tolerates ±150 ns peak-to-peak jitter while maintaining lock across ±100 ppm frequency deviation, as measured per ETSI EN 300 012-1. It uses digital filtering and adaptive loop bandwidth to suppress short-term phase noise without compromising long-term stability during line reacquisition.

Can PEB 3086 F V1.4 drive S/T lines directly without external transformers?

No. The S+ and S− pins require external 1:1 isolation transformer per I.430 Section 7.2.1 to meet safety, impedance matching, and common-mode rejection requirements. Direct connection violates regulatory compliance and risks signal integrity degradation and ground loop interference.