AR8031 Ethernet Transceiver: Features, Equivalent and Datasheet
48 Terminations Receivers 1/1 Drivers/Receivers 1 Functions
The AR8031 is part of the Arctic family of devices. The AR8031 is Atheros’ 4th generation, single port, 10/100/1000 Mbps, Trispeed Ethernet PHY. It supports both RGMII and SGMII interfaces to the MAC. Furthermore, Huge range of Semiconductors, Capacitors, Resistors and IcS in stock. Welcome RFQ.

TI Precision Labs - Ethernet: What is an Ethernet PHY?
AR8031 Pinout
The following figure is the diagram of AR8031 pinout.

Pinout
AR8031 CAD Model
The followings are AR8031 Symbol, Footprint, and 3D Model.

PCB Symbol

PCB Footprint

3D Model
AR8031 Description
The AR8031 is part of the Arctic family of devices — which includes the AR8031, AR8033, and AR8035. The AR8031 is Atheros' 4th generation, single port, 10/100/1000 Mbps, Trispeed Ethernet PHY. It supports both RGMII and SGMII interfaces to the MAC. The AR8031 provides a low power, low BOM (Bill of Materials) cost solution for comprehensive applications including enterprise, carrier and home networks such as CPE, home gateway, enterprise switch, carrier switch/router, mobile base station and base station controller, optical module and media converter, industry automation and measurement. The AR8031 integrates Atheros Green ETHOS® power saving technologies and significantly saves power not only during the work time, but also overtime. The AR8031 also supports IEEE 802.3az EEE standard (Energy Efficient Ethernet) and Atheros proprietary SmartEEE. The AR8031 requires only a single, 3.3V power supply. The AR8031 supports both 1588v2 and synchronous Ethernet to offer a complete time synchronization solution to meet the next generation network requirements. The AR8031 can attain an additional 25% power savings when a cable length is detected that is <30M vs. standard power consumption for a 100M Cat5 cable. AR8031 supports both crystal and external clock input as reference.
This article provides you with a basic overview of the AR8031 Ethernet Transceiver, including its pin descriptions, features and specifications, etc., to help you quickly understand what AR8031 is.
AR8031 Features
● 10/100/1000 BASE-T IEEE 802.3 compliant
● Supports 1000 BASE-T PCS and autonegotiation with next page support
● Supports RGMII and / or SGMII interfaces to MAC devices
● Supports Fiber and Copper combo mode when MAC interface works in RGMII mode
● Supports additional IEEE 1000 BASE-X and 100 BASE-FX with Integrated SerDes
● RGMII timing modes support internal delay and external delay on Rx path
● Supports Atheros Green ETHOS® power saving modes with internal automatic DSP power saving scheme
● Supports IEEE 802.3az (Energy Efficient Ethernet)
● Supports SmartEEE which allows MAC/SoC devices withoug 802.3az support to function as the complete 802.3az system
● Supports Wake-on-LAN (WoL) to detect magic packet and notify the sleeping system to wake up
● Fully integrated digital adaptive equalizers, echo cancellers, and Near End Crosstalk (NEXT) cancellers
● Supports Synchronous Ethernet with selectable recovered clock output
● Robust Cable Discharge Event (CDE) protection of ±6 kV
● Error-free operation over up to 140 meters of CAT5 cable
● Automatic channel swap (ACS)
● Automatic MDI/MDIX crossover
● Automatic polarity correction
● IEEE 802.3u compliant Auto-Negotiation
● Jumbo Frame support up to 10KB (full duplex)
● Multiple loopback modes for diagnostics
● Robust Surge Protection with ±750 V/differential mode and ±4 kV/common mode
● Cable Diagnostic Test (CDT)
● Single power supply: 3.3V, optional for external regulator for core voltage
● 6mm x 6mm, 48-pin QFN package
● Industry temperature (I-temp) option available.
Specifications
- TypeParameter
- Factory Lead Time17 Weeks
- Mounting Type
The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.
Surface Mount - Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
48-WFQFN Exposed Pad - Surface Mount
having leads that are designed to be soldered on the side of a circuit board that the body of the component is mounted on.
YES - Operating Temperature
The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.
-40°C~85°C - Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Tray - Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Active - Number of Terminations48
- TypeTransceiver
- Voltage - Supply
Voltage - Supply refers to the range of voltage levels that an electronic component or circuit is designed to operate with. It indicates the minimum and maximum supply voltage that can be applied for the device to function properly. Providing supply voltages outside this range can lead to malfunction, damage, or reduced performance. This parameter is critical for ensuring compatibility between different components in a circuit.
3.3V - Terminal Position
In electronic components, the term "Terminal Position" refers to the physical location of the connection points on the component where external electrical connections can be made. These connection points, known as terminals, are typically used to attach wires, leads, or other components to the main body of the electronic component. The terminal position is important for ensuring proper connectivity and functionality of the component within a circuit. It is often specified in technical datasheets or component specifications to help designers and engineers understand how to properly integrate the component into their circuit designs.
QUAD - Terminal Form
Occurring at or forming the end of a series, succession, or the like; closing; concluding.
NO LEAD - Number of Functions1
- Supply Voltage
Supply voltage refers to the electrical potential difference provided to an electronic component or circuit. It is crucial for the proper operation of devices, as it powers their functions and determines performance characteristics. The supply voltage must be within specified limits to ensure reliability and prevent damage to components. Different electronic devices have specific supply voltage requirements, which can vary widely depending on their design and intended application.
3.3V - Terminal Pitch
The center distance from one pole to the next.
0.4mm - Pin Count
a count of all of the component leads (or pins)
48 - JESD-30 Code
JESD-30 Code refers to a standardized descriptive designation system established by JEDEC for semiconductor-device packages. This system provides a systematic method for generating designators that convey essential information about the package's physical characteristics, such as size and shape, which aids in component identification and selection. By using JESD-30 codes, manufacturers and engineers can ensure consistency and clarity in the specification of semiconductor packages across various applications and industries.
S-XQCC-N48 - Number of Channels1
- Data Rate
Data Rate is defined as the amount of data transmitted during a specified time period over a network. It is the speed at which data is transferred from one device to another or between a peripheral device and the computer. It is generally measured in Mega bits per second(Mbps) or Mega bytes per second(MBps).
1 Gbps - Protocol
In electronic components, the parameter "Protocol" refers to a set of rules and standards that govern the communication between devices. It defines the format, timing, sequencing, and error checking methods for data exchange between different components or systems. Protocols ensure that devices can understand and interpret data correctly, enabling them to communicate effectively with each other. Common examples of protocols in electronics include USB, Ethernet, SPI, I2C, and Bluetooth, each with its own specifications for data transmission. Understanding and adhering to protocols is essential for ensuring compatibility and reliable communication between electronic devices.
Ethernet - Number of Drivers/Receivers1/1
- Duplex
In the context of electronic components, "Duplex" refers to a type of communication system that allows for bidirectional data flow. It enables two devices to communicate with each other simultaneously, allowing for both sending and receiving of data at the same time. Duplex communication can be further categorized into two types: half-duplex, where data can be transmitted in both directions but not at the same time, and full-duplex, where data can be sent and received simultaneously. This parameter is crucial in networking and telecommunications systems to ensure efficient and effective data transmission between devices.
Full - Receiver Hysteresis
Receiver hysteresis is?commonly used to ensure glitch-free reception even when differential noise is present. This application report compares the noise immunity of the SN65HVD37 to similar devices available from competitors. Contents.
25mV - Simplex/Duplex
In electronic components, the parameter "Simplex/Duplex" refers to the type of communication or data transmission mode supported by the component. Simplex communication is a one-way communication mode where data flows only in one direction, from the sender to the receiver. This means that the sender can only transmit data, and the receiver can only receive data. On the other hand, duplex communication is a two-way communication mode where data can flow in both directions, allowing for simultaneous transmission and reception of data between two devices. Understanding whether a component supports simplex or duplex communication is important for determining how data will be exchanged between devices and ensuring compatibility in a given system.
Full Duplex - Max Junction Temperature (Tj)
Max Junction Temperature (Tj) refers to the maximum allowable temperature at the junction of a semiconductor device, such as a transistor or integrated circuit. It is a critical parameter that influences the performance, reliability, and lifespan of the component. Exceeding this temperature can lead to thermal runaway, breakdown, or permanent damage to the device. Proper thermal management is essential to ensure the junction temperature remains within safe operating limits during device operation.
125°C - Ambient Temperature Range High
This varies from person to person, but it is somewhere between 68 and 77 degrees F on average. The temperature setting that is comfortable for an individual may fluctuate with humidity and outside temperature as well. The temperature of an air conditioned room can also be considered ambient temperature.
85°C - Height800μm
- Length6mm
- Width6mm
- RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
Non-RoHS Compliant
AR8031 Functional Block Diagram
The following is the Block Diagram of AR8031.

AR8031 Functional Block Diagram
AR8031 Equivalent
| Model number | Manufacturer | Description |
| DJLXT971ALEA4SE001 | Intel Corporation | Ethernet Transceiver, CMOS, PQFP64, LQFP-64 |
| FMM4012KA | FUJITSU Semiconductor Limited | DATACOM, ETHERNET TRANSCEIVER, PQFP64, 14 X 14 MM, HEAT SINK, PLASTIC, QFP-64 |
| 88E6060-XX-RCJ1C000 | Marvell Technology Group Ltd | Ethernet Transceiver, PQFP128, ROHS COMPLIANT, PLASTIC, QFP-128 |
| VSC7136QX | Vitesse Semiconductor Corporation | Ethernet Transceiver, GAAS, PQFP80, 14 X 14 MM, PLASTIC, QFP-80 |
| IL41050TA-1ETR7 | NVE Corporation | Ethernet Transceiver, PDSO16, QSOP-16 |
| 88E6060-XX-RCJ1I000 | Marvell Technology Group Ltd | Ethernet Transceiver, PQFP128, ROHS COMPLIANT, PLASTIC, QFP-128 |
| FLLXT1000BA.C4SE000 | Intel Corporation | Ethernet Transceiver, 1-Trnsvr, PBGA492, 35 X 35 MM, PLASTIC, BGA-492 |
| CXB1596AR | Sony Semiconductor | Ethernet Transceiver, Bipolar, PQFP64, 10 X 10 MM, PLASTIC, LQFP-64 |
| L80227 | Avago Technologies | IC,LAN TRANSCEIVER,DUAL,CMOS,QFP,64PIN,PLASTIC |
| BCM5205 | Broadcom Limited | Ethernet Transceiver, CMOS, PQFP160, PLASTIC, QFP-160 |
Parts with Similar Specs
AR8031 Applications
● CPE
● Home gateway
● Enterprise switch
● Carrier switch/router
● Mobile base station and base station controller
● Optical module and media converter
● Industry automation and measurement
AR8031 Package
The following diagram shows the AR8031 package.

Package
AR8031 Topside Marking
The following is the Topside Marking of AR8031.

Topside Marking
AR8031 Manufacturer
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Datasheet PDF
- Datasheets :
What is the essential property of the AR8031?
The AR8031 is part of the Arctic family of devices — which includes the AR8031, AR8033, and AR8035. The AR8031 is Atheros' 4th generation, single port, 10/100/1000 Mbps, Trispeed Ethernet PHY.
Does AR8031 support automatic media detection?
AR8031 supports auto-media detect feature which allows MAC to detect active link partners and process data from copper or fiber interface according to the priority setting.
What is the Signal-to-noise ratio and error rate of the AR8031?
The AR8031 device employs an advanced high speed ADC on each receive channel with high resolution, which results in better SNR and lower error rates.
What is the power input of the AR8031?
The AR8031 only needs a single 3.3V power supply input. The 1.1V core and 2.5V, 1.8V/1.5V voltages are generated by AR8031's internal regulators. So the AR8031's power-on sequence to establish the power rails stability is met internally.
What modes does the AR8031 support?
The AR8031 device supports the software power-down low power mode. The AR8031 device supports hibernation mode.
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