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Broadcom Limited ABCU-5740RZ
- Part No.:
- ABCU-5740RZ
- Manufacturer:
- Broadcom Limited
- Category:
- Fiber Optic Transceiver Modules
- Package:
- Datasheet:
-
ABCU-5740RZ.pdf
- Description:
- TXRX RJ-45 SFP 1.25GBD
- Quantity:
- Payment:
- Shipping:
Inventory:2,458
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Product details
Overview
ABCU-5740RZ from Avago Technologies is a 10/100/1000BASE-T SFP electrical transceiver supporting full-duplex 1.25 Gb/s operation over Category 5 twisted-pair cable using 5-level PAM signaling. It integrates SerDes and magnetics, operates from a single +3.3 V supply, and features RX_LOS disabled per ordering specification. It targets switch-to-switch and switched backplane Gigabit Ethernet interfaces.
For engineers reviewing the ABCU-5740RZ datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, validated 20-pin SFP interface mapping, confirmed IEEE 802.3:2005 compliance, exact power and signal integrity specs, and two industry-confirmed alternative transceivers for 1000BASE-T SFP deployments.
Technical Context
The ABCU-5740RZ implements a fully integrated PHY ASIC with embedded SerDes, auto-negotiation (Clause 28 & 37), and RJ-45 magnetics. It supports 10/100/1000BASE-T operation and is compatible with SGMII host systems. Its internal architecture eliminates external coupling capacitors and bias resistors, reducing host board component count.
Unlike optical SFPs, the ABCU-5740RZ uses differential TD+/TD− and RD+/RD− I/O compliant with CML/LVPECL voltage swings (500–2400 mV diff. input, 370–2000 mV diff. output). The RX_LOS pin is internally grounded via 100 Ω - confirming disabled loss-of-signal detection per model designation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 1.25 Gb/s - matches Gigabit Ethernet line rate; enables 1000 Mbps full-duplex throughput |
| Supply Voltage | +3.3 V ±5% - single rail simplifies power design; VCCT and VCCR each rated to 370 mA max |
| Operating Temp | –5 °C to +70 °C - commercial grade; validated for stable link operation across this range |
| Link Distance | Up to 100 m - complies with IEEE 802.3 Clause 40 for 1000BASE-T over Cat 5 UTP/STP |
| Interface Standard | SFP MSA-compliant 20-pin edge connector - ensures mechanical and electrical interoperability with standard SFP cages |
| Auto-negotiation | IEEE 802.3:2005 Clause 28 & 37 - negotiates speed/duplex with link partner; restartable via register bit 0.9 |
| Power Dissipation | 1100–1150 mW - defines thermal management requirements on host board |
Pinout & Package
ABCU-5740RZ uses the industry-standard Small Form Pluggable (SFP) mechanical package (MSA-compliant), with 20-pin card-edge interface and integrated RJ-45 jack with magnetics. Dimensions and mounting comply with SFP MSA Rev 4.1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 17, 20 | VEET | Transmitter ground - dedicated low-impedance return path for TX circuitry; three pins reduce ground bounce |
| 3 | TX_DISABLE | Reset control input - high or open forces ASIC reset; pulled up internally with 4.7 kΩ |
| 4, 5 | MOD_DEF2 / MOD_DEF1 | 2-wire serial ID interface - clock/data lines for EEPROM readout (AT24C01A-compatible protocol) |
| 6 | MOD_DEF0 | Module presence indicator - tied to ground via 100 Ω resistor; signals host that module is inserted |
| 8 | LOS | Loss of Signal - permanently grounded via 100 Ω resistor; confirms RX_LOS disabled per ABCU-5740RZ spec |
| 9, 10, 11, 14 | VEER | Receiver ground - four dedicated returns minimize noise coupling into RD+/RD− paths |
| 12, 13 | RD− / RD+ | Differential receiver outputs - ac-coupled, 100 Ω internally terminated; swing 370–2000 mV diff. into 100 Ω load |
| 15 | VCCR | Receiver power - +3.3 V ±5% supply for analog/digital RX section; max 370 mA draw |
| 16 | VCCT | Transmitter power - +3.3 V ±5% supply for analog/digital TX section; max 370 mA draw |
| 18, 19 | TD+ / TD− | Differential transmitter inputs - ac-coupled, 100 Ω internally terminated; accepts 500–2400 mV diff. swing |
Key Features
| Feature | Design Value |
|---|---|
| Integrated RJ-45 + magnetics | Eliminates need for external magnetics and common-mode chokes on host PCB |
| On-module SerDes | Reduces MAC-to-PHY pin count overhead and enables compact SFP form factor |
| Single +3.3 V operation | Removes requirement for dual-rail or LDO sequencing; simplifies power tree |
| MSA-compliant hot-plug | 3-stage pin sequencing (ground → power → signal) prevents ESD damage during live insertion |
| RoHS-6 compliant | Meets lead, mercury, hexavalent chromium, PBB, PBDE limits; exempted high-melting solder allowed |
Applications
| Switch-to-Switch Interface | Switched Backplane |
|---|---|
|
Use Scenario: Interconnecting enterprise or data center switches via copper uplinks. IC Role / Device Role / Timing Role: Electrical PHY transceiver bridging MAC-layer SerDes to Cat 5 cabling. Use Value: Enables 1 Gbps full-duplex links without fiber optics; leverages existing copper infrastructure. |
Use Scenario: High-density modular switch chassis with pluggable line cards. IC Role / Device Role / Timing Role: SFP-hosted 1000BASE-T PHY providing standardized, hot-swappable copper connectivity between fabric and line cards. Use Value: Reduces inter-card trace length and EMI risk while maintaining IEEE-compliant link performance. |
| File Server Interface | Industrial Control Network |
|
Use Scenario: Connecting NAS or SAN file servers to top-of-rack switches in SMB environments. IC Role / Device Role / Timing Role: Gigabit Ethernet physical layer device enabling reliable, low-latency storage traffic over unshielded twisted pair. Use Value: Delivers deterministic 1000BASE-T performance with auto-negotiation and link fault detection (via TX_FAULT). |
Use Scenario: Factory-floor network nodes requiring robust copper connectivity in electrically noisy settings. IC Role / Device Role / Timing Role: EMI-hardened SFP transceiver with shielded metal housing and >15 kV air-gap ESD tolerance at RJ-45 port. Use Value: Maintains link integrity under industrial EMI exposure; meets FCC Part 15 Class B and EN55022 Class B. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 1000BASE-T SFP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ABCU-5730RZ | Same package and SerDes, but RX_LOS enabled (pin 8 active high on link loss) | Required where host firmware monitors LOS for link diagnostics or failover | Select ABCU-5730RZ only if RX_LOS status reporting is needed; ABCU-5740RZ avoids false alarms in noise-prone environments |
| AFBR-5710Z | 850 nm optical SFP; requires fiber cabling; no integrated magnetics or RJ-45 | Used for longer reach (>100 m), EMI-isolated, or secure point-to-point links | Choose AFBR-5710Z when immunity to conducted noise or distance >100 m is required; ABCU-5740RZ is copper-only, lower-cost, and board-space efficient |
Compared with ABCU-5730RZ, ABCU-5740RZ removes RX_LOS monitoring to simplify host GPIO usage and improve noise immunity; compared with AFBR-5710Z, it eliminates fiber dependency and reduces system BOM cost by integrating magnetics and copper interface - making it optimal for short-reach, cost-sensitive, copper-based Gigabit Ethernet.
Availability
ABCU-5740RZ is available at Aetrix Electronics and suitable for switch-to-switch interfaces, switched backplane designs, and file server uplinks requiring stable component supply, long-term lifecycle support, and MSA-compliant SFP interoperability.
Supply support for ABCU-5740RZ 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
Avago Technologies (now part of Broadcom) is a global leader in semiconductor solutions for wired and wireless communications, specializing in high-speed connectivity, optical networking, and RF components.
The ABCU-57xxxxZ family was designed specifically for cost-effective, space-constrained 1000BASE-T SFP deployments - delivering full Gigabit Ethernet functionality in an MSA-compliant pluggable module with integrated magnetics and SerDes.
FAQ
What is the operating temperature range for the ABCU-5740RZ?
The ABCU-5740RZ is specified for commercial temperature operation from –5 °C to +70 °C. This range is validated per the Recommended Operating Conditions table in the datasheet and applies to all electrical characteristics including power consumption, data rate, and auto-negotiation behavior. It does not support industrial-grade –40 °C to +85 °C operation - that capability is reserved for variants like ABCU-5740ARZ.
Does the ABCU-5740RZ support auto-negotiation, and which IEEE clauses apply?
Yes, the ABCU-5740RZ supports full auto-negotiation per IEEE 802.3:2005 Clause 28 (for twisted-pair media) and Clause 37 (for 1000BASE-X compatibility). Auto-negotiation is enabled by default (Register 0, Bit 0.12 = 1) and can be restarted via Register 0, Bit 0.9. It negotiates speed (10/100/1000 Mbps), duplex mode, and PAUSE capability with the link partner.
How is RX_LOS handled on the ABCU-5740RZ, and what is the pin configuration?
On the ABCU-5740RZ, RX_LOS is disabled per ordering specification. Pin 8 (LOS) is internally grounded through a 100 Ω resistor - confirmed in Figure 2 note and Table 2 Note 4. This eliminates false link-down assertions in electrically noisy environments and removes the need for host-side LOS monitoring logic.
What are the key power supply requirements for the ABCU-5740RZ?
The ABCU-5740RZ requires two isolated +3.3 V ±5% supplies: VCCT (pin 16) for the transmitter and VCCR (pin 15), each capable of delivering up to 370 mA. Total power dissipation is 1100–1150 mW. Per Figure 5, MSA-recommended filtering (10 µF + 0.1 µF + 1 µH) must be applied on both rails to meet PSNR (100 mV peak-peak) requirements from 10 Hz to 2 MHz.
Is the ABCU-5740RZ compatible with SGMII host interfaces?
Yes, the ABCU-5740RZ supports 10/100/1000BASE-T operation with SGMII host systems, as explicitly stated in the Applications section and Register 4 bit definitions. Its SerDes interface accepts standard SGMII differential signals on TD+/TD− and delivers aligned data on RD+/RD−, enabling direct connection to SGMII-capable MACs or switch fabrics without protocol translation.
ABCU-5740RZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Broadcom Limited
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Data Rate:
- 1.25Gbd
- Wavelength:
- -
- Applications:
- Ethernet
- Voltage - Supply:
- 3.3V
- Connector Type:
- RJ45
- Mounting Type:
- Pluggable, SFP
ABCU-5740RZ FAQ
1.How can I place an order for ABCU-5740RZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ABCU-5740RZ 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-5740RZ reliable?
The price and inventory of ABCU-5740RZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ABCU-5740RZ is usually 5 days.
3.What payment methods are accepted for ABCU-5740RZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ABCU-5740RZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ABCU-5740RZ?
ABCU-5740RZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ABCU-5740RZ 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-5740RZ?
For technical support, including ABCU-5740RZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ABCU-5740RZ requirements.
6.How does Aetrix verify that ABCU-5740RZ is sourced from the original manufacturer or authorized distributors?
All ABCU-5740RZ 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-5740RZ meets industry standards.
7.What is the process for return or replacement of ABCU-5740RZ?
All ABCU-5740RZ units undergo pre-shipment inspection (PSI). If there is an issue with ABCU-5740RZ, 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-5740RZ part is unused and in its original packaging.
Return procedure for ABCU-5740RZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ABCU-5740RZ Tags
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AFBR-5972EZ
Broadcom Limited
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AFBR-5972BZ
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AFBR-5803Z
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Coherent
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AFBR-5803ATZ
Broadcom Limited
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AFBR-5803ATQZ
Broadcom Limited
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FTLX8574D3BCV
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FTLF8526P3BNL
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