My Inquiry
My Account
Broadcom Limited ABCU-5731ARZ
- Part No.:
- ABCU-5731ARZ
- Manufacturer:
- Broadcom Limited
- Category:
- Fiber Optic Transceiver Modules
- Package:
- Datasheet:
-
ABCU-5731ARZ.pdf
- Description:
- TXRX
- Quantity:
- Payment:
- Shipping:
Inventory:4,410
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ABCU-5731ARZ from Broadcom (formerly Avago Technologies) is a 1.25 Gb/s SFP electrical transceiver supporting 10/100/1000BASE-T over Category 5 twisted-pair cable with SGMII host interface, RX_LOS enabled, and industrial temperature range (−40 °C to +85 °C). It integrates SerDes, DSP, and magnetics in a compact SFP module for direct copper interconnects in switch-to-switch and backplane applications.
For engineers reviewing the ABCU-5731ARZ datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, exact pin functions, real-world use cases, and validated alternative options - all aligned to IEEE 802.3:2005, SFP MSA, and industrial-grade deployment requirements.
Technical Context
The ABCU-5731ARZ implements full-duplex 1000BASE-T using 5-level PAM signaling over unshielded/shielded Cat 5 cable, with integrated SerDes supporting SGMII interface to MAC/PHY. Its internal ASIC handles auto-negotiation per IEEE 802.3 Clause 28 (twisted pair) and Clause 37 (1000BASE-X), and includes on-module magnetics and EEPROM per SFP MSA.
It operates from a single 3.3 V ±5% supply, draws ≤370 mA at −40 °C to +85 °C, and features 20-pin SFP edge connector with MDI RJ-45 jack. RX_LOS is implemented as a link-up/link-down indicator (not AC/DC voltage detector), active-high, and only present on ABCU-573xxxZ variants like ABCU-5731ARZ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 1.25 Gb/s - matches SGMII clock rate and enables native Gigabit Ethernet over copper without protocol translation |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial embedded systems and outdoor networking equipment |
| Supply Voltage | 3.3 V ±5% - compatible with standard SFP power rails; requires MSA-compliant filtering per Figure 5 |
| Power Dissipation | 1150 mW max - dictates thermal management in dense SFP cages; no external heatsink required below 4 modules |
| Link Distance | Up to 100 m over Cat 5 - meets IEEE 802.3 specification for 1000BASE-T channel compliance |
| RX_LOS Function | Link status indicator (high = link up) - simplifies host firmware monitoring vs. analog signal detection |
| Interface Standard | SGMII - eliminates need for separate GMII-to-SerDes bridge IC; reduces BOM count and PCB area |
Pinout & Package
ABCU-5731ARZ uses the industry-standard 20-pin SFP form factor (IEC 60825-1 compliant metal housing) with card-edge connector and integrated RJ-45 jack with magnetics. Package dimensions conform to SFP MSA Rev 4.1 (13.4 mm × 56.5 mm × 8.5 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 17, 20 | VEET | Transmitter ground reference - three dedicated pins minimize ground bounce during high-speed TD± switching |
| 3 | TX_DISABLE | Reset control input - asserted high (≥2.0 V) forces ASIC reset; open or low enables operation |
| 4, 5 | MOD_DEF2 / MOD_DEF1 | 2-wire serial ID clock/data - connect to host I²C bus with 4.7–10 kΩ pull-ups; used for EEPROM read per AT24C01A protocol |
| 6 | MOD_DEF0 | Module presence detect - internally grounded via 100 Ω resistor; host reads low to confirm insertion |
| 8 | LOS | Link status output - high = link established; tied to internal logic (not analog comparator); valid only on ABCU-5731ARZ |
| 9, 10, 11, 14 | VEER | Receiver ground reference - four pins ensure stable return path for RD± differential outputs |
| 12, 13 | RD− / RD+ | Receiver differential output - ac-coupled 100 Ω CML/LVPECL-compatible outputs; terminate externally with 100 Ω diff |
| 15 | VCCR | Receiver 3.3 V supply - decoupling required per Figure 5 (10 µF + 0.1 µF + 1 µH filter) |
| 16 | VCCT | Transmitter 3.3 V supply - same decoupling as VCCR; total module current ≤370 mA at max temp |
| 18, 19 | TD+ / TD− | Transmitter differential input - accept 500–1200 mV diff swing; ac-coupled and terminated inside module |
Key Features
| Feature | Design Value |
|---|---|
| Integrated RJ-45 with magnetics | Eliminates 12+ external components (transformers, common-mode chokes, capacitors) and reduces PCB footprint by >35 mm² |
| SGMII host interface | Reduces MAC-to-PHY pin count to 4 differential pairs (vs. 24+ pins for GMII), enabling smaller FPGA/CPU packages |
| Industrial temperature rating | Enables deployment in uncontrolled environments (e.g., factory automation, outdoor base stations) without derating |
| RoHS-6 compliant construction | Meets UL 94V-0 flammability, ESD immunity (2 kV HBM, 15 kV air discharge), and global environmental regulations |
| Hot-pluggable SFP MSA compliance | Supports controlled 3-stage insertion (ground → power → signal) and EMI-shielded housing for live system upgrades |
Applications
| Switch-to-Switch Interconnect | Industrial Backplane Interface |
|---|---|
Use Scenario: Connecting two Layer 2 switches in a factory-floor network where fiber is cost-prohibitive and ambient temperature exceeds 70 °C. IC Role / Device Role / Timing Role: Electrical PHY transceiver bridging SGMII MAC interface to 1000BASE-T copper medium; provides link synchronization and auto-negotiation. Use Value: Enables deterministic <100 µs latency and full-duplex 1 Gbps throughput over existing Cat 5 infrastructure without optical transceivers or media converters. |
Use Scenario: High-density modular PLC chassis requiring hot-swappable Gigabit Ethernet modules between controller and I/O carrier boards. IC Role / Device Role / Timing Role: SFP-form-factor copper PHY providing robust, ESD-hardened physical layer for backplane communication under vibration and EMI stress. Use Value: Delivers −40 °C to +85 °C operation, 15 kV ESD tolerance on RJ-45, and MSA-compliant hot-swap sequencing - eliminating field failures due to thermal cycling or handling. |
| File Server Aggregation | Network Attached Storage (NAS) Front-Panel Port |
Use Scenario: 24-port rack-mount file server aggregating traffic from multiple NAS units via copper uplinks in a data closet with limited airflow. IC Role / Device Role / Timing Role: Low-power (1150 mW max) 1000BASE-T transceiver interfacing server SoC's SGMII port to Cat 5e cabling; manages auto-negotiation and link fault reporting. Use Value: Reduces thermal load vs. optical SFPs while maintaining full 1 Gbps bandwidth and interoperability with legacy desktop switches. |
Use Scenario: Consumer/prosumer NAS enclosure requiring front-panel Gigabit Ethernet with plug-and-play reliability and no driver configuration. IC Role / Device Role / Timing Role: Self-contained SFP transceiver with integrated magnetics and EEPROM-based identification - presents as standard Ethernet PHY to host OS. Use Value: Eliminates need for external PHY IC, magnetics, and layout tuning; supports automatic speed/duplex detection and link status LED mapping via RX_LOS. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 1000BASE-T SFP electrical transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ABCU-5741ARZ | RX_LOS disabled; LOS pin grounded via 100 Ω resistor - no link status output available | Suitable when host firmware does not monitor link state or uses alternate detection (e.g., register polling) | Select ABCU-5741ARZ only if RX_LOS signal is unused; ABCU-5731ARZ required when hardware link indication is needed. |
| AFBR-5710Z | 850 nm VCSEL-based SFP optical transceiver; 3.3 V supply; 550 m reach over MMF; no integrated magnetics or RJ-45 | Used for longer-reach, EMI-isolated, or fiber-infrastructure deployments - not a copper drop-in replacement | Choose AFBR-5710Z only when migrating to fiber; ABCU-5731ARZ remains optimal for cost-sensitive, short-reach copper links. |
Compared with ABCU-5741ARZ, ABCU-5731ARZ adds hardware link status signaling at no power or size penalty; compared with AFBR-5710Z, it replaces optical complexity and cost with integrated copper PHY functionality - making it the sole fit for SGMII-based 1000BASE-T copper interconnects in industrial enclosures.
Availability
ABCU-5731ARZ is available at Aetrix Electronics and suitable for industrial networking equipment, factory automation gateways, and embedded storage systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ABCU-5731ARZ 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
Broadcom Inc. (acquired Avago Technologies in 2016) is a global leader in semiconductor solutions for wired infrastructure, delivering high-performance connectivity ICs for enterprise, data center, and industrial networks.
The ABCU-57xxxxZ family was designed specifically for cost-optimized, space-constrained 1000BASE-T copper interconnects in SFP ports - targeting switch vendors, industrial PC makers, and embedded system integrators needing plug-and-play Ethernet PHYs with integrated magnetics.
FAQ
What is the operating temperature range of the ABCU-5731ARZ?
The ABCU-5731ARZ is rated for −40 °C to +85 °C case temperature, qualifying it for industrial environments including factory floors, outdoor cabinets, and transportation systems. This range is confirmed in Table 7 of the datasheet under "Recommended Operating Conditions" and distinguishes it from commercial-grade variants like ABCU-5731RZ (−5 °C to +70 °C). The ABCU-5731ARZ maintains full 1000BASE-T functionality across this entire span without derating.
Does the ABCU-5731ARZ support auto-negotiation?
Yes, the ABCU-5731ARZ fully supports IEEE 802.3:2005 auto-negotiation for both twisted-pair (Clause 28) and 1000BASE-X (Clause 37) modes. Its internal ASIC implements registers 0–8 per Tables 5–8, enabling negotiation of speed, duplex, and PAUSE capability. Auto-negotiation initiates automatically on power-up or TX_DISABLE de-assertion, and completion is signaled via bit 1.5 (Auto-Negotiation Complete) in Register 1.
What is the function of the LOS pin on the ABCU-5731ARZ?
On the ABCU-5731ARZ, the LOS pin (Pin 8) functions as a digital link status indicator - high = link established, low = link down - not an analog loss-of-signal detector. This behavior is specific to ABCU-573xxxZ models and is documented in Note 4 of Table 2. It simplifies host firmware integration versus interpreting analog voltage thresholds, and is distinct from optical SFP LOS implementations.
Can the ABCU-5731ARZ be used with a standard SFP cage and host board?
Yes, the ABCU-5731ARZ complies fully with the SFP Multi-Source Agreement (MSA) Rev 4.1 mechanical, electrical, and thermal specifications. It mates with standard SFP cages, uses the 20-pin edge connector defined in Figure 2, and adheres to MSA power sequencing (ground → power → signal). Host board design must follow Figure 5's recommended power filtering and provide 4.7–10 kΩ pull-ups on MOD_DEF1/2.
Is the ABCU-5731ARZ RoHS-6 compliant and what certifications does it meet?
Yes, the ABCU-5731ARZ is RoHS-6 compliant (≤0.1% Pb, Hg, Cr⁶⁺, PBB, PBDE; ≤0.01% Cd), certified per UL File #E173874, and meets FCC Part 15 Class B, CENELEC EN55022 Class B, and VCCI Class 1 EMI standards. ESD immunity is rated at 2 kV HBM (electrical pins) and 15 kV air discharge (RJ-45), as verified in Table 1 of the datasheet.
ABCU-5731ARZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Broadcom Limited
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Data Rate:
- 1.25Gbps
- Wavelength:
- -
- Applications:
- Switch Interfacing
- Voltage - Supply:
- 3.3V
- Connector Type:
- RJ45
- Mounting Type:
- Pluggable, SFP
ABCU-5731ARZ FAQ
1.How can I place an order for ABCU-5731ARZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ABCU-5731ARZ 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 ABCU-5731ARZ reliable?
The price and inventory of ABCU-5731ARZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ABCU-5731ARZ is usually 5 days.
3.What payment methods are accepted for ABCU-5731ARZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ABCU-5731ARZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ABCU-5731ARZ?
ABCU-5731ARZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ABCU-5731ARZ 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 ABCU-5731ARZ?
For technical support, including ABCU-5731ARZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ABCU-5731ARZ requirements.
6.How does Aetrix verify that ABCU-5731ARZ is sourced from the original manufacturer or authorized distributors?
All ABCU-5731ARZ 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 ABCU-5731ARZ meets industry standards.
7.What is the process for return or replacement of ABCU-5731ARZ?
All ABCU-5731ARZ units undergo pre-shipment inspection (PSI). If there is an issue with ABCU-5731ARZ, 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 ABCU-5731ARZ part is unused and in its original packaging.
Return procedure for ABCU-5731ARZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ABCU-5731ARZ Tags
-
AFBR-5972EZ
Broadcom Limited
-
AFBR-5972BZ
Broadcom Limited
-
FTLF8519P3BNL
Coherent
-
AFBR-5803Z
Broadcom Limited
-
AFBR-5803TZ
Broadcom Limited
-
FTLF8519P3BTL
Coherent
-
AFBR-5803ATZ
Broadcom Limited
-
AFBR-5803ATQZ
Broadcom Limited
-
FTLX8574D3BCV
Coherent
-
FTLF8526P3BNL
Coherent
-
FTLF8519F2GCL
Coherent
-
FTLF1318P3BTL
Coherent
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
