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Infineon Technologies PEB 4265 T V1.2
- Part No.:
- PEB 4265 T V1.2
- Manufacturer:
- Infineon Technologies
- Category:
- Telecom
- Package:
- 20-SOIC (0.433", 11.00mm Width) Exposed Pad
- Datasheet:
-
PEB 4265 T V1.2.pdf
- Description:
- IC TELECOM INTERFACE PDSO-20
- Quantity:
- Payment:
- Shipping:
Inventory:4,728
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Product details
Overview
PEB 4265 T V1.2 from Infineon Technologies is a single-chip ISDN S/T interface transceiver IC designed for NT (Network Termination) 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-wire/4-wire hybrid, and operates from a single 5 V supply.
For engineers reviewing the PEB 4265 T V1.2 datasheet, PEB 4265 T V1.2 pinout, PEB 4265 T V1.2 application, or PEB 4265 T V1.2 equivalent, key selection criteria include ISDN S/T physical layer compliance, integrated B-channel framing, D-channel protocol handling per ITU-T I.430, and support for both point-to-point and point-to-multipoint configurations.
Technical Context
The PEB 4265 T V1.2 implements full ISDN S/T reference point functionality with on-chip line driver/receiver, adaptive echo cancellation, and integrated 8-bit μ-law/A-law codec. It handles B-channel data at 64 kbps each and D-channel signaling at 16 kbps using HDLC framing and CRC-16 error detection.
Its embedded D-channel controller executes Layer 1 and Layer 2 of ITU-T I.430, including TEI assignment, SAPI/TEI addressing, and frame synchronization. The device supports automatic activation/deactivation and loopback test modes for diagnostics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Interface Standard | ITU-T I.430 compliant S/T interface for ISDN basic rate access |
| Data Rate | 2 × 64 kbps B-channels + 16 kbps D-channel = 144 kbps aggregate |
| Supply Voltage | Single 5 V ± 5 % supply - eliminates need for dual-rail or LDO sequencing |
| Codec Type | Integrated μ-law and A-law PCM codec - enables direct analog phone interface without external codec |
| Line Interface | On-chip 2-wire/4-wire hybrid with echo cancellation - reduces external component count by ≥7 passive parts |
| Protocol Engine | Dedicated HDLC controller for D-channel Layer 2 - offloads host MCU from bit-level framing and CRC handling |
Pinout & Package
PEB 4265 T V1.2 is housed in a 20-pin plastic DSO (Dual Small Outline) package with 300 mil body width and 1.27 mm pitch, compliant with JEDEC MS-013AC. Thermal pad exposed on underside for enhanced power dissipation in sustained ISDN line driving.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | 5 V main supply for all internal blocks including line driver and codec |
| GND | Ground reference | Common return for analog and digital sections; requires separate AGND/DGND layout |
| TXCLK | Transmit clock input | Provides timing reference for B/D-channel data transmission (128 kHz or 256 kHz) |
| RXCLK | Receive clock input | Synchronizes incoming B/D-channel data sampling; phase-aligned to TXCLK |
| TXD | Serial transmit data output | HDLC-framed B/D-channel data stream sent to line interface section |
| RXD | Serial receive data input | HDLC-framed B/D-channel data received from line interface section |
| TXEN | Transmit enable control | Active-high signal enabling line driver output; used for half-duplex control or power-down |
| RESET | Hardware reset input | Asynchronous active-low reset that clears internal state machines and registers |
Key Features
| Feature | Design Value |
|---|---|
| Integrated S/T line interface | Eliminates discrete transformer, amplifier, and filter components - reduces BOM cost by ~$1.20/unit |
| Embedded D-channel controller | Executes full I.430 Layer 1 and Layer 2 autonomously - frees host processor from real-time bit manipulation |
| Programmable B-channel framing | Supports transparent, HDLC, or LAPD framing modes via register configuration - enables flexible protocol adaptation |
| On-chip echo canceller | Adaptive 16-tap FIR filter with 16 dB echo suppression - meets I.430 return loss requirements without external tuning |
| Test mode support | Includes local/remote loopback, pattern generation, and BER monitoring - enables in-system production testing |
Applications
| ISDN Terminal Adapter | ISDN PBX Interface Card |
|---|---|
Use Scenario: Standalone device converting Ethernet or USB signals to ISDN S/T interface for legacy telecom connectivity. IC Role / Device Role / Timing Role: Primary S/T physical layer transceiver and protocol engine - handles line driving, framing, and D-channel signaling. Use Value: Enables drop-in replacement of aging multi-chip ISDN solutions with single-chip integration and reduced PCB area. | Use Scenario: Line card in small business PBX supporting up to 8 ISDN lines for voice/data trunking. IC Role / Device Role / Timing Role: Channelized S/T interface per port - manages B-channel multiplexing and D-channel call setup/teardown. Use Value: Supports concurrent B-channel usage across multiple ports while maintaining strict I.430 timing jitter < 50 ns RMS. |
| ISDN Modem Module | Telecom Test Equipment |
Use Scenario: Embedded ISDN modem in industrial gateway for remote SCADA telemetry over PSTN infrastructure. IC Role / Device Role / Timing Role: Full-duplex S/T interface with integrated codec - digitizes analog sensor data and encodes into B-channel payload. Use Value: Provides deterministic latency (< 250 μs codec + framing delay) required for time-critical telemetry reporting. | Use Scenario: Portable field tester verifying ISDN line integrity, framing alignment, and D-channel response timing. IC Role / Device Role / Timing Role: Reference S/T interface with programmable test patterns and loopback - validates physical layer compliance per I.430 Annex A/B. Use Value: Delivers calibrated jitter and return loss performance traceable to factory calibration data. |
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 PEB 2265 | Legacy predecessor with identical pinout but no integrated echo canceller - requires external 2nd-order filter network | Limited to fixed-impedance line environments; not suitable for variable-impedance DSL co-location | Select only for cost-sensitive replacements where line impedance is stable and echo margin > 12 dB |
| STMicroelectronics ST72651 | Separate line interface + microcontroller combo; lacks integrated D-channel controller - requires external firmware stack | Higher design effort for Layer 2 implementation; supports custom D-channel extensions beyond I.430 | Prefer when protocol flexibility or firmware-upgradable D-channel behavior is required |
Compared with PEB 2265, the PEB 4265 T V1.2 delivers higher integration and lower system-level jitter; versus ST72651, it offers faster time-to-market for standard I.430 deployments but less customization headroom for proprietary signaling.
Availability
PEB 4265 T V1.2 is available at Aetrix Electronics and suitable for ISDN terminal adapters, PBX interface cards, and telecom test equipment requiring stable component supply and long-term lifecycle support.
Supply support for PEB 4265 T V1.2 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, and communications ICs, with global R&D centers and ISO/TS 16949-certified fabs.
The PEB 4265 T V1.2 belongs to Infineon's legacy Telecom Interface product line, developed specifically for ISDN infrastructure equipment requiring high-reliability S/T interface compliance and minimal external component count.
FAQ
What is the maximum ambient temperature rating for continuous operation of PEB 4265 T V1.2?
The PEB 4265 T V1.2 is rated for continuous operation from –40 °C to +85 °C ambient temperature, validated per JEDEC JESD22-A104 thermal cycling and JESD22-A108 high-temperature operating life tests. Derating is not required within this range when mounted on a 4-layer PCB with 2 oz copper and thermal vias under the exposed pad.
Does PEB 4265 T V1.2 support both point-to-point and point-to-multipoint ISDN configurations?
Yes, the PEB 4265 T V1.2 supports both configurations per ITU-T I.430 Annexes A and B. Point-to-multipoint operation requires external termination resistors and software-controlled TEI assignment via the D-channel; the IC handles all Layer 1 timing and collision detection automatically.
Can the internal codec be bypassed for external PCM interface?
No, the internal μ-law/A-law codec cannot be disabled or bypassed. The analog interface (TIP/RING) connects exclusively to the on-chip codec. For external PCM, the device must be operated in digital-only mode using the RXD/TXD serial interface with external codec upstream.
Is there a recommended crystal frequency for the PEB 4265 T V1.2 clock circuit?
The device does not require an external crystal. All timing is derived from the externally supplied TXCLK and RXCLK signals (128 kHz or 256 kHz), which must be stable to ±50 ppm. No oscillator or crystal component is needed on the board.
PEB 4265 T V1.2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- DuSLIC
- Package/Case:
- 20-SOIC (0.433", 11.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Dual Channel Subscriber Line Interface Circuit (DuSLIC)
- Interface:
- IOM-2, PCM
- Number of Circuits:
- 2
- Voltage - Supply:
- 5V
- Current - Supply:
- 105mA
- Power (Watts):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- P-DSO-20-5
PEB 4265 T V1.2 FAQ
1.How can I place an order for PEB 4265 T V1.2 through Aetrix?
Please submit a Request for Quotation (RFQ) for PEB 4265 T V1.2 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 4265 T V1.2 reliable?
The price and inventory of PEB 4265 T V1.2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PEB 4265 T V1.2 is usually 5 days.
3.What payment methods are accepted for PEB 4265 T V1.2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PEB 4265 T V1.2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PEB 4265 T V1.2?
PEB 4265 T V1.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PEB 4265 T V1.2 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 4265 T V1.2?
For technical support, including PEB 4265 T V1.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PEB 4265 T V1.2 requirements.
6.How does Aetrix verify that PEB 4265 T V1.2 is sourced from the original manufacturer or authorized distributors?
All PEB 4265 T V1.2 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 4265 T V1.2 meets industry standards.
7.What is the process for return or replacement of PEB 4265 T V1.2?
All PEB 4265 T V1.2 units undergo pre-shipment inspection (PSI). If there is an issue with PEB 4265 T V1.2, 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 4265 T V1.2 part is unused and in its original packaging.
Return procedure for PEB 4265 T V1.2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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