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Infineon Technologies PEF 22504 HT V2.1
- Part No.:
- PEF 22504 HT V2.1
- Manufacturer:
- Infineon Technologies
- Category:
- Telecom
- Package:
- 144-LQFP
- Datasheet:
-
PEF 22504 HT V2.1.pdf
- Description:
- IC TELECOM INTERFACE 144TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
PEF 22504 HT V2.1 from Infineon Technologies is a quad-channel E1/T1/J1 line interface unit (LIU) supporting long- and short-haul telecommunication applications. It integrates four independent LIU channels, each with bipolar violation detection, receive jitter attenuation (±50 ppm input jitter tolerance for E1), dual elastic buffers, and programmable pulse shaping. Designed for carrier-grade access equipment including DSLAMs and multiservice access platforms, it operates across -40°C to +85°C industrial temperature range.
For engineers reviewing the PEF 22504 HT V2.1 datasheet, PEF 22504 HT V2.1 pinout, PEF 22504 HT V2.1 application, or PEF 22504 HT V2.1 equivalent, key selection criteria include E1/T1/J1 line coding compliance (HDB3/AMI/B8ZS), integrated clock recovery with <0.2 UI peak-to-peak output jitter, dual elastic buffer depth (128 bits per channel), and support for both Intel and Motorola microcontroller bus interfaces.
Technical Context
The PEF 22504 HT V2.1 implements four fully independent LIU channels sharing a master clocking unit with PLL-based jitter attenuation. Each channel supports selectable line coding (E1 HDB3, T1 B8ZS, J1 AMI), automatic transmit clock switching between local and recovered clocks, and receive line monitoring mode (RLM) for redundancy control.
Its functional architecture includes asynchronous microcontroller interface (8-/16-bit Intel/Motorola modes), serial SCI/SPI configuration ports, boundary scan (JTAG), and comprehensive test functions-pseudo-random binary sequence (PRBS) generation, in-band loopback, remote/local loop, and alarm simulation-enabling full line diagnostics and system-level validation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| E1/T1/J1 Channels | 4 independent, simultaneously operable line interfaces with full protocol autonomy |
| Line Coding Support | HDB3 (E1), B8ZS (T1), AMI (J1); configurable per channel via registers |
| Jitter Tolerance (E1) | ±50 ppm at 2.048 MHz; meets ITU-T G.703 and G.823 specifications |
| Output Jitter (E1) | <0.2 UIpp at 2.048 MHz; enables direct connection to framer without external jitter cleanup |
| Elastic Buffer Depth | 128 bits per channel (dual-buffered); absorbs timing slips and enables seamless clock domain crossing |
| Operating Temperature | -40°C to +85°C; qualified for industrial telecom infrastructure deployment |
| Supply Voltage | 3.3 V ±5% core; 3.3 V or 5.0 V I/O compatible; separate analog/digital power domains |
Pinout & Package
PEF 22504 HT V2.1 is packaged in PG-TQFP-144-17 (144-pin thin quad flat pack, 0.5 mm pitch, exposed thermal pad). Pin assignments are defined per channel with dedicated TX/RX differential pairs, clock inputs (TCLK, RCLK), microcontroller interface buses (D[15:0], A[15:0], CS#, RD#, WR#), and JTAG boundary scan signals (TCK, TMS, TDI, TDO).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TXOUT_A+, TXOUT_A− | Differential E1/T1/J1 transmit output (Channel A) | LVDS-compatible output driving 120 Ω balanced line; supports up to 10 dB line build-out |
| RXIN_A+, RXIN_A− | Differential E1/T1/J1 receive input (Channel A) | High-sensitivity receiver with adaptive equalization; detects loss-of-signal within 150 μs |
| D[15:0] | Asynchronous data bus (Intel/Motorola mode) | Configurable 8- or 16-bit bidirectional interface for register access and status readback |
| TCK, TMS, TDI, TDO | JTAG boundary scan interface | IEEE 1149.1-compliant test access port enabling production testing and in-system debug |
| RESET# | Active-low hardware reset input | Synchronous deassertion required for proper initialization of all four LIU channels and PLL |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel LIU integration | Reduces board space and interconnect complexity vs. four discrete LIUs; eliminates channel skew |
| Programmable pulse shaper & LBO | Per-channel digital control of pulse amplitude, rise/fall time, and line build-out (0–18 dB) for cable length adaptation |
| Receive Line Monitoring (RLM) | Enables hot-standby redundancy by detecting signal presence/failure and triggering automatic channel switchover |
| Dual elastic buffer per channel | Supports independent clock domains between line and framer; prevents bit errors during clock transitions |
| Comprehensive loopback suite | Local, remote, in-band, payload, and PRBS loopbacks enable end-to-end line integrity verification without external test gear |
Applications
| DSLAM Line Cards | Multi-Service Access Routers |
|---|---|
|
Use Scenario: Aggregating 64 E1/T1 lines in carrier-class DSLAMs for broadband subscriber access. IC Role / Device Role / Timing Role: Physical layer line interface bridging copper trunk lines to internal framer ASICs. Use Value: Dual elastic buffers absorb clock drift between line and system clocks; jitter attenuation ensures framer lock stability under network stress. |
Use Scenario: Providing T1/E1 WAN interfaces in enterprise-grade multi-service routers with redundant line paths. IC Role / Device Role / Timing Role: Quad-channel LIU enabling four independent WAN ports with automatic failover via RLM. Use Value: Receive Line Monitoring triggers sub-50 ms switchover to backup line upon signal loss-meeting carrier-grade SLA requirements. |
| Remote Terminal Units (RTUs) | Cell Site Backhaul Gateways |
|
Use Scenario: Deploying in outdoor RTUs for legacy TDM voice/data backhaul over leased lines. IC Role / Device Role / Timing Role: Long-haul E1 interface with adaptive equalization compensating for 1.5 km+ cable attenuation. Use Value: Programmable line build-out and receive equalization maintain BER <10⁻¹⁰ over extended distances without external amplifiers. |
Use Scenario: Interfacing legacy base station controllers (BSCs) to modern IP-based RAN gateways. IC Role / Device Role / Timing Role: J1-compatible LIU converting Japanese ISDN PRI traffic to internal packetized format. Use Value: AMI coding support and precise jitter cleanup ensure interoperability with NTT-compliant BSCs and framer ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad E1/T1 line interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PMC450-4 (PMC-Sierra) | Single-chip quad LIU with integrated framer; requires external clock synthesis; no RLM mode | Targeted at framer-integrated designs; lacks standalone LIU flexibility and redundancy monitoring | Select when framer co-integration reduces BOM count and system clocking is centralized |
| DS2155 (Maxim Integrated) | Quad E1-only LIU; no T1/J1 support; fixed 3.3 V operation; smaller TQFP-100 package | Limited to E1-only deployments; lower pin count but no multi-standard flexibility | Select for cost-sensitive E1-only access nodes where T1/J1 compatibility is unnecessary |
Compared with PEF 22504 HT V2.1, PMC450-4 trades standalone LIU configurability for framer integration, while DS2155 sacrifices multi-standard support and RLM capability for footprint and cost reduction-making PEF 22504 HT V2.1 optimal for carrier-grade, multi-protocol, high-availability line cards.
Availability
PEF 22504 HT V2.1 is available at Aetrix Electronics and suitable for DSLAM line cards, multi-service access routers, and remote terminal units requiring stable component supply across extended product lifecycles.
Supply support for PEF 22504 HT V2.1 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, and communications ICs, with global R&D and manufacturing infrastructure.
The PEF 22504 HT V2.1 belongs to Infineon's QuadLIU™ family-designed specifically for carrier-class TDM line interface applications demanding high reliability, multi-standard support, and integrated diagnostics in access and aggregation equipment.
FAQ
What is the maximum supported cable length for E1 operation?
The PEF 22504 HT V2.1 supports E1 transmission up to 1.5 km over 120 Ω twisted-pair cable using its programmable line build-out (LBO) and adaptive receive equalization. At 0 dB LBO, it meets full ITU-T G.703 specification for 270 m; with 18 dB LBO enabled, performance extends to 1.5 km while maintaining BER <10⁻¹⁰ under standard noise conditions.
Does PEF 22504 HT V2.1 support automatic clock switching between local and recovered clocks?
Yes-the device implements automatic transmit clock switching (ATCS) that seamlessly toggles between local oscillator (TCLK) and recovered line clock (RCLK) based on loss-of-signal or frame sync failure detection. Switching occurs within 125 μs and preserves data integrity via dual elastic buffer alignment, ensuring zero-bit-loss transitions during clock source changes.
Can the four LIU channels operate with different line standards simultaneously?
Yes-each of the four channels is independently configurable for E1 (HDB3), T1 (B8ZS), or J1 (AMI) line coding via dedicated XPM(2:0) registers. This allows mixed-mode operation-for example, two E1 and two T1 ports on a single device-without hardware modification or shared resource contention.
Is JTAG boundary scan supported for production testing?
Yes-the PEF 22504 HT V2.1 implements full IEEE 1149.1 JTAG boundary scan with TCK, TMS, TDI, and TDO pins. It supports instruction register scan, data register scan, and EXTEST/INTEST operations, enabling automated PCB test, interconnect verification, and in-system programming of configuration registers during manufacturing.
PEF 22504 HT V2.1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- QuadLIU™
- Package/Case:
- 144-LQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Function:
- Line Interface Unit (LIU)
- Interface:
- E1, J1, T1
- Number of Circuits:
- 4
- Voltage - Supply:
- 1.8V, 3.3V
- Current - Supply:
- 230mA
- Power (Watts):
- 140 mW
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- P-TQFP-144-6
PEF 22504 HT V2.1 FAQ
1.How can I place an order for PEF 22504 HT V2.1 through Aetrix?
Please submit a Request for Quotation (RFQ) for PEF 22504 HT V2.1 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 22504 HT V2.1 reliable?
The price and inventory of PEF 22504 HT V2.1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PEF 22504 HT V2.1 is usually 5 days.
3.What payment methods are accepted for PEF 22504 HT V2.1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PEF 22504 HT V2.1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PEF 22504 HT V2.1?
PEF 22504 HT V2.1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PEF 22504 HT V2.1 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 22504 HT V2.1?
For technical support, including PEF 22504 HT V2.1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PEF 22504 HT V2.1 requirements.
6.How does Aetrix verify that PEF 22504 HT V2.1 is sourced from the original manufacturer or authorized distributors?
All PEF 22504 HT V2.1 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 22504 HT V2.1 meets industry standards.
7.What is the process for return or replacement of PEF 22504 HT V2.1?
All PEF 22504 HT V2.1 units undergo pre-shipment inspection (PSI). If there is an issue with PEF 22504 HT V2.1, 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 22504 HT V2.1 part is unused and in its original packaging.
Return procedure for PEF 22504 HT V2.1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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