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Lantiq PEF3452HV1.3
- Part No.:
- PEF3452HV1.3
- Manufacturer:
- Lantiq
- Category:
- Telecom
- Package:
- 44-QFP
- Datasheet:
-
PEF3452HV1.3.pdf
- Description:
- LINE INTERFACE UNIT
- Quantity:
- Payment:
- Shipping:
Inventory:667
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Product details
Overview
PEF3452HV1.3 from Infineon Technologies is a TE3-LIU™ Line Interface Unit supporting DS3 (44.736 Mbps), STS-1 (51.84 Mbps), and E3 (34.368 Mbps) physical layer interfaces. It integrates receiver clock/data recovery, transmitter pulse shaping, B3ZS/HDB3/AMI line coding, jitter attenuation, and hardware-controlled loopback functions in a single 128-pin TQFP package. Used in T3/E3 multiplexers and channelized/unchannelized link-layer equipment for telecom central office and edge applications.
For engineers reviewing the PEF3452HV1.3 datasheet, PEF3452HV1.3 pinout, PEF3452HV1.3 application, or PEF3452HV1.3 equivalent, key selection criteria include DS3/E3/STS-1 multi-standard compliance, integrated jitter attenuation PLL with ≤0.2 UI peak-to-peak output jitter, hardware-configurable LOS detection per standard, and support for both AMI and bipolar violation coding schemes.
Technical Context
The PEF3452HV1.3 implements a dual-path architecture: a receive path with adaptive equalization, clock and data recovery (CDR), and programmable loss-of-signal (LOS) thresholds per DS3/E3/STS-1; and a transmit path with digital pulse shaping, jitter attenuation PLL operating at 122.88 MHz (DS3), 155.52 MHz (STS-1), or 103.104 MHz (E3), and selectable line coding (B3ZS, HDB3, AMI).
Its hardware control unit enables pin-strapped configuration of framing mode, loopback type (local/remote), alarm reporting, and power-down states without microprocessor intervention. The device uses external crystal (12.288 MHz, 15.552 MHz, or 10.3104 MHz) with ±100 ppm pulling range and supports both differential and single-ended receive input interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rates | DS3: 44.736 Mbps; E3: 34.368 Mbps; STS-1: 51.84 Mbps - enables single-chip support for three legacy telecom standards. |
| Jitter Attenuation | PLL-based attenuation with 30 dB suppression at 10 Hz–1 kHz - reduces incoming jitter to meet SONET/SDH and ITU-T G.742 requirements. |
| Receive Jitter Tolerance | ≤0.75 UI (DS3), ≤0.85 UI (E3), ≤0.75 UI (STS-1) - ensures reliable lock under worst-case network jitter conditions. |
| Transmit Output Jitter | ≤0.2 UI peak-to-peak (DS3/E3/STS-1) - meets GR-499-CORE and ITU-T G.823 mask compliance. |
| Line Coding Support | B3ZS (DS3), HDB3 (E3), AMI (all) - provides standard-compliant encoding for T-carrier and E-carrier physical layers. |
| LOS Detection | Hardware-selectable thresholds: DS3 = –36 dBm, E3 = –40 dBm, STS-1 = –28 dBm - enables precise, standard-specific signal failure detection. |
| Supply Voltage | VDD = 3.3 V ± 0.3 V - compatible with industry-standard 3.3 V logic and I/O domains. |
Pinout & Package
PEF3452HV1.3 is housed in a 128-pin TQFP (20 mm × 20 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments are defined across four functional groups: interface pins (RIN+, RIN−, TOUT+, TOUT−), control pins (LOOPI, LOOPR, LOS, ALM), power/ground (VDD, VSS), and test/microprocessor interface (CS, RD, WR, ADDR[7:0]).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RIN+, RIN− | Differential Receive Input | Accepts balanced DS3/E3/STS-1 line signals; internal termination and equalization adapt to cable length up to 450 ft. |
| TOUT+, TOUT− | Differential Transmit Output | Drives 75 Ω coaxial or 120 Ω twisted-pair lines with compliant pulse templates per standard. |
| LOOPI, LOOPR | Hardware Loopback Control | Pin-strapped local (LOOPI) or remote (LOOPR) loopback activation - bypasses line driver/receiver for diagnostics without software. |
| LOS, ALM | Hardware Alarm Outputs | Open-drain status flags indicating loss-of-signal or general alarm condition - directly interfaceable with LED drivers or FPGA GPIO. |
| REFCLK | Reference Clock Input | Accepts 12.288 MHz (E3), 15.552 MHz (STS-1), or 10.3104 MHz (DS3) crystal oscillator input for jitter attenuator PLL. |
Key Features
| Feature | Design Value |
|---|---|
| Multi-standard line interface | Single IC supports DS3, E3, and STS-1 physical layers - eliminates need for separate transceivers in multi-protocol access equipment. |
| Hardware-configurable operation | All critical modes (framing, loopback, alarm polarity) set via dedicated pins - enables boot-time configuration without firmware initialization. |
| Integrated jitter attenuation PLL | On-chip PLL with 30 dB attenuation and ≤0.2 UI output jitter - replaces discrete jitter cleaners and simplifies clock tree design. |
| Standard-compliant pulse shaping | Programmable transmit filter coefficients match DS3/E3/STS-1 pulse templates (Fig. 26–28) - ensures compliance with ANSI T1.102 and ITU-T G.703. |
| Line monitoring capability | DS3/E3/STS-1 receive path includes real-time signal quality monitoring (BER estimation, signal level) - supports proactive network maintenance. |
Applications
| DS3 Multiplexer | E3 Add-Drop Multiplexer |
|---|---|
|
Use Scenario: Aggregating 28 T1 channels into a DS3 stream for long-haul transport over coaxial or fiber links. IC Role / Device Role / Timing Role: Physical layer line interface handling DS3 receive synchronization, CDR, B3ZS decoding, and transmit pulse shaping. Use Value: Eliminates external timing recovery ICs and line drivers while meeting GR-499-CORE jitter and pulse mask requirements. |
Use Scenario: Inserting/dropping E3 tributaries in European metro networks using G.703-compliant interfaces. IC Role / Device Role / Timing Role: E3 line interface performing HDB3 decoding, hardware LOS detection at –40 dBm, and transmit template compliance. Use Value: Reduces bill-of-materials by integrating equalizer, CDR, and pulse shaper - validated against ITU-T G.703 Annex A pulse shape. |
| STS-1 SONET Terminal | T3/E3 Network Monitoring Probe |
|
Use Scenario: Terminating STS-1 signals in enterprise SONET access nodes with embedded OAM&P functions. IC Role / Device Role / Timing Role: STS-1 line interface providing AMI/B3ZS coding, jitter attenuation, and AIS insertion on transmit path. Use Value: Enables hardware-level AIS generation and remote loopback for RFC 2544 testing without host processor involvement. |
Use Scenario: In-line passive monitoring of DS3/E3/STS-1 links for BER, jitter, and signal level analysis. IC Role / Device Role / Timing Role: Dual-mode line monitor extracting receive signal metrics and generating alarms via LOS/ALM pins. Use Value: Provides real-time, pin-accessible health indicators (e.g., LOS assertion within 125 µs) for automated fault isolation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar line interface unit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PMC-Sierra PM5352 | Supports DS3/E3 only; no STS-1 mode; requires external microcontroller for configuration. | Lacks native SONET framing support and hardware loopback pins - necessitates firmware-driven setup. | Choose when STS-1 is not required and microprocessor resources are available for register programming. |
| TI TLK2201B | SONET/SDH-only (STS-3c/STM-1); no DS3/E3 support; higher power (1.8 W vs. 1.2 W). | Designed exclusively for OC-3/STM-1 systems; incompatible with T-carrier or E-carrier infrastructure. | Prefer for pure SONET applications where DS3/E3 interoperability is unnecessary and higher jitter performance is needed. |
Compared with PM5352 and TLK2201B, the PEF3452HV1.3 uniquely delivers triple-standard (DS3/E3/STS-1) hardware-configurable operation in one die, reducing system-level complexity for multi-protocol telecom edge devices without sacrificing jitter or pulse-shape compliance.
Availability
PEF3452HV1.3 is available at Aetrix Electronics and suitable for DS3 multiplexing, E3 add-drop multiplexing, and STS-1 SONET terminal applications requiring stable component supply across extended product lifecycles.
Supply support for PEF3452HV1.3 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.
The PEF3452HV1.3 belongs to Infineon's TE3-LIU™ line interface product family, engineered specifically for legacy TDM transport infrastructure requiring multi-standard DS3/E3/STS-1 physical layer integration with minimal external components.
FAQ
What line coding schemes does the PEF3452HV1.3 support?
The PEF3452HV1.3 supports B3ZS for DS3, HDB3 for E3, and AMI for all three standards (DS3, E3, STS-1). Coding selection is determined by hardware pin strapping and corresponding line rate - no register writes are required. Each mode applies standardized pulse templates verified per ANSI T1.102 (DS3), ITU-T G.703 (E3), and GR-253-CORE (STS-1).
Does the PEF3452HV1.3 require an external microcontroller to operate?
No - the PEF3452HV1.3 supports full hardware configuration via dedicated pins (e.g., LOOPI, LOOPR, FRMSEL, CODESEL) for framing, coding, loopback, and alarm polarity. Microprocessor interface (8-bit address/data bus) is optional and used only for advanced diagnostics or dynamic reconfiguration; basic line interface operation is autonomous.
What is the maximum supported cable length for DS3 operation?
The PEF3452HV1.3 supports DS3 operation over 75 Ω coaxial cable up to 450 ft (137 m), as validated by pulse template compliance in Figure 27 of the preliminary datasheet. This assumes use of recommended external components (e.g., 100 nF AC coupling caps, 75 Ω termination) and meets ANSI T1.102 amplitude and rise/fall time requirements at the cross-connect point.
How does the PEF3452HV1.3 handle loss-of-signal detection across different standards?
LOS detection thresholds are hardware-selectable per standard: –36 dBm for DS3, –40 dBm for E3, and –28 dBm for STS-1. These values align with ITU-T G.703 and ANSI T1.102 specifications and are implemented via internal comparators with hysteresis. The LOS pin asserts within 125 µs of signal disappearance and de-asserts after 2.5 ms of valid signal restoration.
PEF3452HV1.3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Lantiq
- Series:
- -
- Package/Case:
- 44-QFP
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Line Interface Unit (LIU)
- Interface:
- DS3, E3, STS-1
- Number of Circuits:
- 1
- Voltage - Supply:
- 3.13V ~ 3.46V
- Current - Supply:
- 110mA
- Power (Watts):
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-MQFP-44-2
PEF3452HV1.3 FAQ
1.How can I place an order for PEF3452HV1.3 through Aetrix?
Please submit a Request for Quotation (RFQ) for PEF3452HV1.3 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 PEF3452HV1.3 reliable?
The price and inventory of PEF3452HV1.3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PEF3452HV1.3 is usually 5 days.
3.What payment methods are accepted for PEF3452HV1.3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PEF3452HV1.3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PEF3452HV1.3?
PEF3452HV1.3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PEF3452HV1.3 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 PEF3452HV1.3?
For technical support, including PEF3452HV1.3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PEF3452HV1.3 requirements.
6.How does Aetrix verify that PEF3452HV1.3 is sourced from the original manufacturer or authorized distributors?
All PEF3452HV1.3 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 PEF3452HV1.3 meets industry standards.
7.What is the process for return or replacement of PEF3452HV1.3?
All PEF3452HV1.3 units undergo pre-shipment inspection (PSI). If there is an issue with PEF3452HV1.3, 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 PEF3452HV1.3 part is unused and in its original packaging.
Return procedure for PEF3452HV1.3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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