Infineon Technologies PEB8091FDV1.1

Overview

PEB8091FDV1.1 from Infineon Technologies is a Network Termination Controller (NTC-Q) IC for basic-rate ISDN, integrating both U-interface (2B1Q) and S/T-interface transceivers on a single die. It supports ANSI T1.601, ETSI ETR 080, ITU I.430, and CNET ST/LAA/ELR/DNP/822 compliance, delivers automatic activation/deactivation, and operates in low-power CMOS with power-down mode - deployed in NT1 equipment for European and North American ISDN networks.

For engineers reviewing the PEB8091FDV1.1 datasheet, PEB8091FDV1.1 pinout, PEB8091FDV1.1 application, or PEB8091FDV1.1 equivalent, key selection criteria include U-interface 2B1Q loop margin compliance, S/T bus vs. point-to-point configuration support, IOM-2 test interface availability, MLT-3 decode logic, and pin-programmable ACT/CSO bits per regional specification.

Technical Context

The PEB8091FDV1.1 implements dual transceiver functionality: its U-interface uses 2B1Q line coding with full ANSI/ETSI/CNET loop margin compliance and includes MLT-3 input decoding logic per ANSI T1.601; the S/T-interface supports both point-to-point and multi-drop bus topologies while meeting and exceeding ITU I.430 and ETS 300 122 transmission requirements.

It features an IOM-2 serial interface for chip-level testing and evaluation, integrates automatic activation/deactivation control logic, and employs low-power CMOS with configurable power-down mode - enabling direct integration into NT1 hardware without external line drivers or protocol controllers.

Key Specifications

Pinout & Package

T-QFP-64 package (plastic thin quad flat pack, 64 pins, 0.5 mm pitch, body size 10 × 10 mm), lead-free compatible per RoHS, thermal pad exposed on underside for enhanced heat dissipation in NT1 chassis mounting.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ISDN network termination controller applications.

Compared with PEF8091FV1.1, PEB8091FDV1.1 offers identical electrical performance but differs in package thermal characteristics and moisture sensitivity; versus PEB2023, it adds full U-interface 2B1Q transceiver functionality essential for NT1 deployment - making it non-interchangeable in loop-termination roles.

Availability

PEB8091FDV1.1 is available at Aetrix Electronics and suitable for ISDN NT1 equipment, 2B1Q line repeaters, multi-terminal S/T bus hubs, and ISDN protocol evaluation platforms requiring stable component supply across extended product lifecycles.

Supply support for PEB8091FDV1.1 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 leadership in ISDN, DSL, and broadband access silicon since the 1990s.

The NTC-Q product line was designed specifically for ISDN network termination applications, integrating U- and S/T-interface transceivers to reduce bill-of-materials and simplify NT1 hardware design for global telecom infrastructure.

FAQ

What standards does the PEB8091FDV1.1 U-interface support?

The U-interface complies with ANSI T1.601, ETSI ETR 080, and CNET ST/LAA/ELR/DNP/822 specifications, including full transmission margin on all certified loops and conformance to British Telecom RC7355E. It also supports pin-programmable ACT and CSO bits to meet regional activation and channel supervision requirements.

Does the PEB8091FDV1.1 require external line transformers?

No - the device integrates U-interface line drivers/receivers with on-chip termination and biasing circuitry, enabling direct connection to 2B1Q twisted-pair loops without external transformers or discrete line drivers in standard NT1 implementations.

How is the S/T-interface configured for bus vs. point-to-point operation?

S/T topology is selected via external strap pins and internal configuration registers; bus mode enables multi-drop connections up to eight terminals with built-in collision detection, while point-to-point mode optimizes timing for dedicated TE links - both modes meet ITU I.430 physical layer requirements.

What is the purpose of the IOM-2 interface?

The IOM-2 serial interface provides three-wire (clock/data/enable) access to internal control and status registers, supporting production test, firmware validation, and real-time debug without requiring JTAG or additional debug hardware - simplifying lab and factory test infrastructure.