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Infineon Technologies PEF 80902 H V1.1
- Part No.:
- PEF 80902 H V1.1
- Manufacturer:
- Infineon Technologies
- Category:
- Telecom
- Package:
- 44-QFP
- Datasheet:
-
PEF 80902 H V1.1.pdf
- Description:
- IC TELECOM INTERFACE MQFP-44
- Quantity:
- Payment:
- Shipping:
Inventory:1,132
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Product details
Overview
PEF 80902 H V1.1 from Infineon Technologies is a second-generation modular ISDN NT (Network Termination) IC for ordinary U-interface applications, implementing IEC-T/NTC-T compliant 4B3T line coding, integrated U- and S-transceivers, and IOM-2 host interface. It operates at 3.3 V supply, supports awake/deactivation state machine control, and delivers ≤150 mW typical power consumption in active mode.
For engineers reviewing the PEF 80902 H V1.1 datasheet, PEF 80902 H V1.1 pinout, PEF 80902 H V1.1 application, or PEF 80902 H V1.1 equivalent, key selection criteria include U-interface 4B3T compliance, integrated dual transceiver architecture, IOM-2 timing synchronization, and NT-state machine behavior per IEC-T/NTC-T standards.
Technical Context
The PEF 80902 H V1.1 implements a full Layer 1 ISDN NT function with separate U- and S-transceiver blocks: the U-transceiver handles 4B3T encoding/decoding, scrambler/descrambler, maintenance channel support, and C/I command/indication logic; the S-transceiver supports S/T-interface framing per ITU I.430 with Q-channel handling and multiframing.
It integrates an IOM-2 (Intelligent Operator Module) interface for host microcontroller communication, featuring frame/bit synchronization, reset-controlled initialization, and undervoltage detection. The device uses internal state machines for NT activation/deactivation, including Awake Protocol initiation by LT or NT, and supports Loopback #2 for diagnostics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.3 V ±5% - powers all internal logic and transceiver circuitry; requires external decoupling per Figure 18. |
| U-Interface Coding | 4B3T - maps 4-bit binary to 3-symbol ternary for U-line transmission; complies with IEC-T/NTC-T standard. |
| IOM-2 Interface | 8-bit parallel, synchronous - enables bidirectional data/control exchange with host MCU at up to 16.384 MHz clock rate. |
| Power Consumption | ≤150 mW (typ.) in active mode - enables thermally constrained NT1 designs without forced cooling. |
| Input Leakage Current | ≤30 µA on AIN/BIN pins - ensures reliable signal integrity during low-power monitoring states. |
| Reset Pulse Width | ≥100 ns (min.) - guarantees proper initialization of internal registers and state machines. |
| Undervoltage Threshold | 2.7 V (typ.) - triggers internal reset when VDD drops below safe operating level, preventing metastability. |
Pinout & Package
PEF 80902 H V1.1 is housed in a 128-pin LQFP package (20 mm × 20 mm, 0.4 mm pitch), as specified in Section 5 "Package Outlines" of the datasheet. Pin assignments are validated per Figure 1 and Table 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Supply | Main 3.3 V supply input for core logic and I/O buffers; requires local 100 nF ceramic decoupling. |
| GND | Ground Reference | Digital ground return for all internal circuits; must be connected to low-impedance PCB plane. |
| AIN / BIN | U-Line Input | Differential analog inputs from U-interface hybrid; accept ±2.5 V peak-to-peak 4B3T signals. |
| Uk0 / Uk1 | U-Line Output | Differential outputs driving U-line transformer; support open-circuit test mode per Table 15. |
| S0P / S0N | S-Interface Output | Differential transmit outputs to S/T bus; comply with ITU I.430 voltage swing and timing. |
| RX / TX | IOM-2 Data Bus | 8-bit bidirectional parallel interface; synchronized to IOMCLK for deterministic host communication. |
| RESET | Asynchronous Reset | Active-low input that clears all registers and forces NT into idle state; min. pulse width 100 ns. |
| ACT | Status Indicator | Open-drain output signaling NT activity state (Table 3); drives external LED for visual status feedback. |
Key Features
| Feature | Design Value |
|---|---|
| IEC-T/NTC-T Compliant State Machine | Hardware-implemented NT activation/deactivation logic per Figures 8 and 30 - eliminates need for external firmware state management. |
| Integrated 4B3T Encoder/Decoder | Real-time conversion between 4-bit binary and 3-symbol ternary using MMS 43 coding (Table 8) - enables direct U-line physical layer compliance. |
| Maintenance Channel Support | Dedicated C/I command/indication codes (Table 10) transmitted over U-interface - allows remote diagnostics and configuration without disrupting user data. |
| Loopback #2 Capability | Full digital loopback path from S-interface input to S-interface output via internal routing - enables end-to-end S/T link validation without external hardware. |
| Crystal Oscillator Interface | Supports 16.384 MHz fundamental-mode crystal (Table 22) with internal load capacitance - eliminates need for external oscillator module. |
Applications
| ISDN NT1 Terminal Equipment | Multi-Port ISDN Gateway |
|---|---|
Use Scenario: Standalone NT1 unit connecting analog telephone lines to ISDN U-interface in residential or SOHO environments. IC Role / Device Role / Timing Role: Primary Layer 1 physical layer controller managing U-line activation, S/T framing, and host interface coordination. Use Value: Reduces BOM count by integrating U- and S-transceivers, IOM-2 interface, and state machine logic in single 128-pin LQFP. |
Use Scenario: 4-port ISDN gateway aggregating multiple TE devices onto a single U-line connection for SME voice/data services. IC Role / Device Role / Timing Role: Central transceiver hub synchronizing four independent S/T channels to shared U-line resources using time-division multiplexing. Use Value: Enables scalable multi-TE support through configurable IOM-2 register mapping and programmable C/I code handling. |
| ISDN Test & Diagnostic Tool | Legacy ISDN Network Upgrade Module |
Use Scenario: Portable field tester verifying U-interface signal integrity, 4B3T waveform compliance, and NT activation timing. IC Role / Device Role / Timing Role: Reference U-transceiver source generating standardized 4B3T patterns and decoding received signals for error analysis. Use Value: Provides built-in Loopback #2 and ACT/LED status outputs for real-time pass/fail indication without external logic analyzers. |
Use Scenario: Retrofit module replacing obsolete NT-SM chips in legacy PBX or concentrator systems requiring IEC-T/NTC-T compliance. IC Role / Device Role / Timing Role: Drop-in functional replacement supporting identical pinout and register map per Table 11 differences document. Use Value: Maintains backward compatibility while improving power efficiency (≤150 mW vs. prior gen >200 mW) and reducing thermal footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ISDN NT transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PEF 80901 H V1.1 | First-generation T-SMINTO device; lacks C/I-command LTD extension and reduced leakage current spec (AIN/BIN ≤50 µA vs. 30 µA). | Supports basic IEC-T but not enhanced maintenance channel features introduced in V1.1 revision. | Select only if legacy design reuse mandates identical timing and register behavior without new diagnostics. |
| SI3217x Series (Silicon Labs) | Single-chip ISDN line interface with integrated transformer drivers, higher integration, and software-configurable U/S modes. | Targets modern VoIP gateways; requires different host driver stack and lacks native IOM-2 interface. | Choose for new designs prioritizing smaller footprint and flexible protocol support over pin/register compatibility. |
Compared with PEF 80902 H V1.1, the PEF 80901 H V1.1 offers identical pinout and core functionality but omits updated maintenance channel commands and tighter leakage specs, while the SI3217x replaces discrete transceiver logic with a highly integrated, software-defined alternative requiring full firmware rework.
Availability
PEF 80902 H V1.1 is available at Aetrix Electronics and suitable for ISDN NT1 terminal equipment, multi-port ISDN gateways, field diagnostic tools, and legacy network upgrade modules requiring stable component supply and long-term industrial availability.
Supply support for PEF 80902 H 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 AG is a German semiconductor manufacturer specializing in power management, automotive, industrial, and wired communications ICs, with global R&D and manufacturing infrastructure.
The PEF 80902 H V1.1 belongs to Infineon's Wired Communications product line, designed specifically for ISDN network termination applications requiring full IEC-T/NTC-T Layer 1 compliance and modular system integration.
FAQ
What is the primary function of the PEF 80902 H V1.1 in an ISDN system?
The PEF 80902 H V1.1 serves as a complete ISDN Network Termination Type 1 (NT1) physical layer controller. It manages U-interface 4B3T signal generation and decoding, S/T-interface framing per ITU I.430, host communication via IOM-2, and hardware-enforced NT state transitions - eliminating need for external FPGA or microcontroller-based Layer 1 logic.
Does the PEF 80902 H V1.1 require an external crystal oscillator?
Yes - it requires a 16.384 MHz fundamental-mode quartz crystal connected between X1 and X2 pins, with internal capacitors configured per Table 22 (12 pF load capacitance). No external oscillator IC is needed, but crystal stability and PCB layout must meet Figure 22 specifications to ensure bit-synchronization accuracy.
How does the IOM-2 interface differ from standard SPI or UART interfaces?
The IOM-2 interface is a proprietary 8-bit parallel synchronous bus with dedicated frame/bit clocks (IOMCLK, IOMFS), not SPI or UART. It supports full-duplex register access and command streaming at up to 16.384 MHz, enabling deterministic timing for ISDN layer management - unlike asynchronous protocols which introduce jitter unsuitable for U-line activation control.
Can the PEF 80902 H V1.1 operate with 5 V supply voltage?
No - the device is specified exclusively for 3.3 V ±5% operation (Section 4.5). Applying 5 V exceeds absolute maximum ratings (Table 23) and will damage the IC. External level-shifting is required if interfacing with 5 V host systems, particularly on IOM-2 data and control lines.
PEF 80902 H V1.1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- T-SMINT®
- Package/Case:
- 44-QFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Function:
- Second Generation Modular
- Interface:
- ISDN
- Number of Circuits:
- 1
- Voltage - Supply:
- 3.3V
- Current - Supply:
- -
- Power (Watts):
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- P-MQFP-44
PEF 80902 H V1.1 FAQ
1.How can I place an order for PEF 80902 H V1.1 through Aetrix?
Please submit a Request for Quotation (RFQ) for PEF 80902 H V1.1 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 PEF 80902 H V1.1 reliable?
The price and inventory of PEF 80902 H V1.1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PEF 80902 H V1.1 is usually 5 days.
3.What payment methods are accepted for PEF 80902 H V1.1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PEF 80902 H V1.1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PEF 80902 H V1.1?
PEF 80902 H V1.1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PEF 80902 H V1.1 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 PEF 80902 H V1.1?
For technical support, including PEF 80902 H V1.1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PEF 80902 H V1.1 requirements.
6.How does Aetrix verify that PEF 80902 H V1.1 is sourced from the original manufacturer or authorized distributors?
All PEF 80902 H V1.1 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 PEF 80902 H V1.1 meets industry standards.
7.What is the process for return or replacement of PEF 80902 H V1.1?
All PEF 80902 H V1.1 units undergo pre-shipment inspection (PSI). If there is an issue with PEF 80902 H V1.1, 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 PEF 80902 H V1.1 part is unused and in its original packaging.
Return procedure for PEF 80902 H V1.1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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