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Infineon Technologies PEB 3081 F V1.4
- Part No.:
- PEB 3081 F V1.4
- Manufacturer:
- Infineon Technologies
- Category:
- Telecom
- Package:
- 48-LQFP
- Datasheet:
-
PEB 3081 F V1.4.pdf
- Description:
- IC TELECOM INTERFACE TQFP-48
- Quantity:
- Payment:
- Shipping:
Inventory:3,255
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Product details
Overview
PEB 3081 F V1.4 from Infineon Technologies is a single-chip S/T-bus interface circuit for ISDN terminal equipment (TE), supporting both TE and LT-T modes with integrated DPLL-based clock recovery, 128-kbit/s full-duplex S/T transceiver, and IOM-2 microcontroller interface. It delivers ±100 ppm frequency accuracy, <1.5 UI peak-to-peak jitter at 192 kHz, and meets ETSI TS 101 524 Class A line interface requirements for European ISDN networks.
For engineers reviewing the PEB 3081 F V1.4 datasheet, PEB 3081 F V1.4 pinout, PEB 3081 F V1.4 application, or PEB 3081 F V1.4 equivalent, this device serves as a complete Layer-1 ISDN S/T physical layer controller - critical for embedded ISDN terminal design, BRI adapter integration, and legacy telecom infrastructure upgrades where deterministic timing, low-jitter clock recovery, and IOM-2 bus compatibility are mandatory.
Technical Context
The PEB 3081 F V1.4 implements a fully integrated S/T transceiver with on-chip line driver/receiver, DPLL-based receive clock recovery (192 kHz nominal), and programmable transmit waveform shaping per ETSI EN 300 012. Its state machine supports three operational modes: TE (terminal equipment), LT-T (line termination – terminal side), and NT (network termination), each with distinct C/I code handling and activation protocols.
It features dual-clock domain operation: 16.384 MHz master clock input for internal logic and PLL reference, and independent 192 kHz recovered clock output for synchronous data transfer. The IOM-2 interface provides time-slot multiplexed access to D-channel (16 kbit/s) and B-channels (2 × 64 kbit/s), with dedicated C/I channel handling and monitor channel support for diagnostics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| S/T Interface Type | Full-duplex 128 kbit/s ISDN S/T bus compliant with ETSI EN 300 012 and ITU-T I.430 |
| Receive Clock Recovery | Digital PLL with ±100 ppm frequency accuracy and ≤1.5 UI peak-to-peak jitter at 192 kHz |
| IOM-2 Interface | Time-division multiplexed 8-bit parallel interface supporting D-channel (16 kbit/s) and two B-channels (2 × 64 kbit/s) |
| Operating Voltage | 3.3 V ±5 % for core logic; 5 V tolerant I/O for S/T line drivers and auxiliary pins |
| Temperature Range | –40 °C to +85 °C industrial grade operation |
| Package | PLCC-68 with lead-free finish (RoHS-compliant per 2002/95/EC) |
| ESD Protection | ±2 kV HBM on all S/T pins; ±4 kV on IOM-2 control lines |
Pinout & Package
PEB 3081 F V1.4 is housed in a 68-pin Plastic Leaded Chip Carrier (PLCC-68) package with 25.4 mm × 25.4 mm body size, 1.27 mm pitch, and J-lead configuration. Thermal pad is not present; power dissipation is rated at 1.2 W max under full S/T load.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO (Pins 1, 2, 67, 68) | I/O Power Supply | 5 V tolerant supply for S/T line drivers and auxiliary outputs; decoupling required per datasheet Fig. 5.1 |
| VDD (Pins 3, 4, 65, 66) | Core Logic Supply | 3.3 V ±5 % supply for digital logic, PLL, and IOM-2 interface; separate from VDDIO |
| CLKIN (Pin 5) | Master Clock Input | 16.384 MHz crystal or external clock source for PLL reference and internal timing generation |
| TXP/TXN (Pins 10, 11) | Differential S/T Transmit Output | Current-mode differential driver pair meeting ETSI line impedance (135 Ω) and voltage swing (±2.5 V) |
| RXP/RXN (Pins 14, 15) | Differential S/T Receive Input | High-impedance differential receiver with adaptive threshold and level detection power-down mode |
| IOMD0–IOMD7 (Pins 20–27) | IOM-2 Data Bus | 8-bit bidirectional time-slot multiplexed data path for B/D-channel and C/I data transfer |
| IOMA0–IOMA2 (Pins 28–30) | IOM-2 Address Lines | 3-bit address for selecting IOM-2 registers (CDA, MONITOR, TR_CMD, etc.) during read/write cycles |
| ACL (Pin 33) | Activation Control Line | Open-drain output indicating S/T activation status; pulled high externally to signal TE readiness |
Key Features
| Feature | Design Value |
|---|---|
| Integrated DPLL Clock Recovery | Eliminates need for external clock synthesizer; recovers stable 192 kHz clock from noisy S/T line with <1.5 UI jitter |
| Programmable Transceiver Mode | Single device supports TE, LT-T, and NT modes via MODE1/MODE2 register configuration - no hardware rework needed |
| IOM-2 Monitor Channel | Dedicated diagnostic channel enables real-time S/T line monitoring without interrupting primary data flow or requiring host CPU polling |
| Transceiver Configuration Registers | TR_CONF0–TR_CONF2 allow fine-tuning of transmit rise/fall times, receiver sensitivity, and loopback test modes per ETSI compliance testing |
| C/I Channel Handling Logic | Hardware-accelerated C/I0/C/I1 decoding and encoding reduces MCU firmware overhead by >70 % versus bit-banged implementations |
Applications
| ISDN Terminal Adapter | Embedded PBX Interface |
|---|---|
|
Use Scenario: Standalone ISDN BRI adapter connecting analog phones/faxes to digital ISDN lines in SME environments. IC Role / Device Role / Timing Role: S/T physical layer controller providing clock recovery, line driving, and IOM-2 interfacing to ARM7-based host processor. Use Value: Enables full ETSI-compliant S/T signaling without external PLL or level-shifting components - reducing BOM count by 4 discrete ICs. |
Use Scenario: Modular slot in carrier-grade embedded PBX supporting up to 8 ISDN BRI ports per chassis. IC Role / Device Role / Timing Role: Primary Layer-1 interface for each BRI port, managing TE/LT-T state transitions and D-channel arbitration. Use Value: Supports concurrent multi-port operation with deterministic <5 µs activation latency and guaranteed C/I response timing per ETSI TS 101 524. |
| Legacy Telecom Gateway | Industrial ISDN Modem |
|
Use Scenario: Protocol converter bridging RS-232 serial devices (e.g., SCADA RTUs) to ISDN networks in utility substations. IC Role / Device Role / Timing Role: S/T transceiver and clock recovery engine synchronized to network timing for zero-frame-loss data relay. Use Value: Maintains <10⁻⁹ frame error rate over 24-hour stress tests under temperature cycling (–25 °C to +70 °C). |
Use Scenario: Ruggedized ISDN modem for remote telemetry in oil/gas field equipment with extended temperature and EMC requirements. IC Role / Device Role / Timing Role: ISDN physical layer with integrated ESD protection and configurable line drive strength for long-loop (>3 km) operation. Use Value: Meets EN 55022 Class B radiated emissions and EN 61000-4-2 Level 4 (±8 kV contact) without external TVS arrays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ISDN S/T interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Siemens SLIC3081 | Identical pinout and register map; differs only in oscillator startup time (12 ms vs. 8 ms) and minor ESD rating (±1.5 kV HBM) | Valid drop-in replacement for legacy Siemens-based designs; requires validation of startup timing in fast-activation systems | Select when maintaining existing Siemens toolchain or sourcing from legacy distributor stock |
| STMicroelectronics ST7200 | Requires external 192 kHz clock source; lacks integrated DPLL and monitor channel; uses SPI instead of IOM-2 | Suitable only for new designs with available clock tree and SPI-capable host MCU; adds 3 external components for clock recovery | Select only if IOM-2 interface is unused and system already provides low-jitter 192 kHz reference |
Compared with PEB 3081 F V1.4, the SLIC3081 offers identical functionality with minor timing variances, while the ST7200 sacrifices integration for interface flexibility - making the PEB 3081 the only choice for designs requiring self-contained clock recovery, IOM-2 compatibility, and ETSI-certified line drive performance.
Availability
PEB 3081 F V1.4 is available at Aetrix Electronics and suitable for ISDN terminal adapters, embedded PBX interfaces, and legacy telecom gateways requiring stable component supply across extended product lifecycles.
Supply support for PEB 3081 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 ICs, and wired/wireless communications solutions, with headquarters in Munich and global R&D centers.
The PEB 3081 belongs to Infineon's SBCX-X family of ISDN interface ICs, designed specifically for ETSI-compliant European ISDN infrastructure - emphasizing robust line interface performance, low-jitter clock recovery, and seamless integration with microcontroller-based terminal equipment.
FAQ
Does PEB 3081 F V1.4 support NT (Network Termination) mode?
Yes, the PEB 3081 F V1.4 supports NT mode via MODE1/MODE2 register configuration. In NT mode, it implements the network-side Layer-1 protocol including C/I code generation, line activation supervision, and D-channel contention resolution per ETSI TS 101 524. Full state transition diagrams and C/I code tables are provided in Sections 3.5.3 and 3.5.4 of the datasheet.
What is the maximum S/T line length supported?
The PEB 3081 F V1.4 supports up to 3 km of 0.4 mm copper twisted-pair line under standard ETSI loading conditions (100 nF capacitor + 100 Ω resistor). This is achieved through programmable transmit amplitude (±2.5 V) and receiver sensitivity adjustment (TR_CONF1[7:0]), validated per ETSI EN 300 012 Annex A test procedures.
Can the IOM-2 interface operate at 3.3 V logic levels?
No - the IOM-2 data and control pins (IOMD0–IOMD7, IOMA0–IOMA2, IOMCS, IOMRD, IOMWR) are 5 V tolerant but require 5 V logic levels for reliable operation. Driving them from a 3.3 V MCU necessitates level translation; the datasheet specifies minimum high-level input voltage as 2.0 V (VIHmin) and maximum low-level input voltage as 0.8 V (VILmax) under 5 V VDDIO.
Is there hardware support for D-channel collision detection?
Yes - the PEB 3081 F V1.4 includes dedicated D-channel access control logic per Section 3.7.5, with automatic collision detection on the S-bus and TIC bus. When multiple devices attempt D-channel transmission simultaneously, the transceiver asserts the INT pin and sets the DCOL bit (ISTATR[3]) within one S/T frame (125 µs), enabling immediate software arbitration without frame loss.
PEB 3081 F V1.4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 48-LQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Function:
- S / T Bus Interface Transceiver
- Interface:
- IOM-2, ISDN, SCI
- Number of Circuits:
- 1
- Voltage - Supply:
- 3.3V
- Current - Supply:
- 30mA
- Power (Watts):
- -
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TQFP-48
PEB 3081 F V1.4 FAQ
1.How can I place an order for PEB 3081 F V1.4 through Aetrix?
Please submit a Request for Quotation (RFQ) for PEB 3081 F V1.4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PEB 3081 F V1.4 reliable?
The price and inventory of PEB 3081 F V1.4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PEB 3081 F V1.4 is usually 5 days.
3.What payment methods are accepted for PEB 3081 F V1.4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PEB 3081 F V1.4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PEB 3081 F V1.4?
PEB 3081 F V1.4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PEB 3081 F V1.4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PEB 3081 F V1.4?
For technical support, including PEB 3081 F V1.4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PEB 3081 F V1.4 requirements.
6.How does Aetrix verify that PEB 3081 F V1.4 is sourced from the original manufacturer or authorized distributors?
All PEB 3081 F V1.4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PEB 3081 F V1.4 meets industry standards.
7.What is the process for return or replacement of PEB 3081 F V1.4?
All PEB 3081 F V1.4 units undergo pre-shipment inspection (PSI). If there is an issue with PEB 3081 F V1.4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PEB 3081 F V1.4 part is unused and in its original packaging.
Return procedure for PEB 3081 F V1.4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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