DP83847ALQA56A - 10/100 Ethernet PHY | Texas Instruments
料号： DP83847ALQA56A ✗ 停产DP83847ALQA56A 概述
An Ethernet PHY is the physical-layer component in an Ethernet communications hierarchy. It converts logical data transmitted by a MAC or network controller into electrical signals for twisted-pair cabling and converts received signals back into digital data. The DP83847 supports the 10 Mb/s and 100 Mb/s Ethernet rates defined for its 10BASE-T and 100BASE-TX modes, while Parallel Detection helps determine the connection type and link status during Auto-Negotiation.
The DP83847 uses low-power 0.18 µm CMOS technology and is specified for typical power consumption below 351 mW. Its 5 V tolerant I/O structure allows the digital interface to connect to systems using higher logic levels while the core operates from the 3.3 V supply range. The device includes an external twisted-pair transformer interface, making it suitable for Ethernet PHYs used in industrial, office, home, and embedded networking equipment.
The manufacturer documentation identifies the DP83847 as a full-feature single Physical Layer device with integrated PMD sublayers. It supports 10BASE-T and 100BASE-TX protocols, Parallel Detection under IEEE 802.3u, and hardware reset-controlled configuration through latched float and pull-down pins. The electrical design requires careful attention to the external magnetics, line impedance, termination, decoupling, and signal routing on the printed circuit board.
Typical applications include industrial Ethernet controllers, embedded Linux systems, factory automation equipment, network interface controllers, print servers, IP cameras, and communications equipment requiring 10/100-Mbps copper Ethernet. A system implementation must provide the required external transformer and suitable RJ45 or cable-side interface while observing the device’s pin configuration and power-supply recommendations.
For PCB design, place the PHY, transformer, and supporting passive components according to the manufacturer’s recommended layout, keep high-current and high-speed paths controlled, and provide local supply bypassing close to the power pins. Use the manufacturer datasheet for the definitive pin assignment, package dimensions, timing characteristics, and electrical limits before releasing production hardware.
This product page consolidates the manufacturer’s technical description, lifecycle information, package details, application guidance, and verified cross-reference information. It distinguishes the obsolete DP83847ALQA56A from the documented direct substitute DP83847ALQA56A/NOPB while avoiding unsupported assumptions about additional replacement parts.
直接替换替代料： DP83847ALQA56A ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
DP83847ALQA56A/NOPB
✅ 直接替换📋 参考替代料（不在目录中）
DP83847ALQA56A 规格参数
| Device Type | Single 10/100 Ethernet physical-layer transceiver |
| Ethernet Data Rate | 10 Mb/s and 100 Mb/s |
| Supported Protocol Modes | 10BASE-T and 100BASE-TX |
| Supply Voltage Range | 3 V to 3.6 V |
| I/O Voltage Tolerance | 5 V tolerant |
| Process Technology | 0.18 µm CMOS |
| Typical Power Consumption | Less than 351 mW |
| Media Support | Category 3 or Category 5 unshielded twisted-pair cable |
| Physical Layer Features | Integrated PMD sublayers |
| Auto-Negotiation | Supported |
| Parallel Detection | Supported under IEEE 802.3u |
| External Magnetics | External twisted-pair transformer required |
| Channel Count | 1 channel |
| 封装 | 56-WQFN, 9 x 9 mm |
| 安装类型 | Surface mount |
| Operating Voltage | 3 V to 3.6 V |
| 引脚数量 | 56 pins |
| 生命周期状态 | Obsolete and no longer manufactured |
DP83847ALQA56A 56-wqfn, 9 x 9 mm 引脚配置指南
DP83847ALQA56A（56-wqfn, 9 x 9 mm 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： DP83847ALQA56A.
请参阅 数据手册 以查看完整引脚配置。
典型应用
DP83847ALQA56A 适用于 6 应用s: Industrial Ethernet Equipment, Embedded Linux Network Interface, Factory Automation Controller, IP Camera and Surveillance, Print Server and Network Peripheral, Office and Home Network Terminal.
Industrial Ethernet Equipment
The DP83847ALQA56A is suitable for industrial Ethernet equipment that requires a 10/100-Mbps copper network interface. Its 10BASE-T and 100BASE-TX support covers legacy and common industrial network segments, while the 3 V to 3.6 V supply and 5 V tolerant I/O simplify interface integration with embedded controllers. The external transformer requirement should be satisfied with the magnetics specified by the manufacturer application circuit. The device is a better fit when 10/100 Ethernet is sufficient and a dedicated gigabit PHY would be unnecessary.
推荐
Embedded Linux Network Interface
The DP83847ALQA56A can provide the physical layer for an embedded Linux system requiring 10/100-Mbps Ethernet connectivity. Its integrated PMD sublayers and support for both 10BASE-T and 100BASE-TX allow the same PHY to be used in different network environments. The design must provide an external transformer, controlled twisted-pair routing, and compliant local bypassing. Because the original ordering code is obsolete, DP83847ALQA56A/NOPB is the documented direct substitute for new builds.
推荐
Factory Automation Controller
The DP83847ALQA56A is applicable to factory automation controllers, remote I/O systems, and data-acquisition equipment that use 10/100-Mbps Ethernet. The device supports Category 3 and Category 5 unshielded twisted-pair media and includes Parallel Detection under IEEE 802.3u for Auto-Negotiation-related link handling. Designers should preserve the manufacturer’s recommended copper layout and magnetics interface to minimize emissions and maintain reliable network operation.
推荐
IP Camera and Surveillance
The DP83847ALQA56A can support a 10/100-Mbps Ethernet connection in an IP camera, access-control terminal, or other compact surveillance endpoint. Its low-power 0.18 µm CMOS implementation, typical power consumption below 351 mW, and 5 V tolerant I/O support compact mixed-signal designs. A production design should use the specified external transformer, maintain controlled differential routing, and confirm that 100 Mb/s bandwidth satisfies the intended camera stream and network configuration.
推荐
Print Server and Network Peripheral
The DP83847ALQA56A is appropriate for print servers, network storage appliances, and other peripherals requiring a 10/100-Mbps copper Ethernet port. It allows the host processor to interface through a conventional Ethernet MAC while the PHY handles the physical signaling and Auto-Negotiation functions. For new production, use the documented substitute DP83847ALQA56A/NOPB after checking the complete pin assignment and board-level requirements against the manufacturer datasheet.
推荐
Office and Home Network Terminal
The DP83847ALQA56A supports 10BASE-T and 100BASE-TX connectivity for office and home network terminals, including access points, VoIP terminals, and network appliances. The integrated PMD sublayers and Parallel Detection support simplify physical-layer implementation while the external transformer isolates the cable interface. When evaluating a replacement, DP83847ALQA56A/NOPB provides the documented same-package, electrically equivalent option for the obsolete original.
推荐
推荐产品汇总
工程参考数据： DP83847ALQA56A ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | DP83847ALQA56A/NOPB |
|---|---|---|
| Package | 56-WQFN (9 x 9 mm) | 56-WQFN (9 x 9 mm) |
| Brand | Texas Instruments | Texas Instruments |
| Ethernet Data Rate | 10 Mb/s and 100 Mb/s | 10 Mb/s and 100 Mb/s |
| Supported Protocol Modes | 10BASE-T and 100BASE-TX | 10BASE-T and 100BASE-TX |
| Supply Voltage Range | 3 V to 3.6 V | 3 V to 3.6 V |
| I/O Voltage Tolerance | 5 V tolerant | 5 V tolerant |
| Typical Power Consumption | Less than 351 mW | Less than 351 mW |
| Physical Layer Features | Integrated PMD sublayers | Integrated PMD sublayers |
| Media Support | Category 3 or Category 5 unshielded twisted-pair cable | Category 3 or Category 5 unshielded twisted-pair cable |
| Lifecycle Status | Obsolete | Documented direct substitute |
关键差异点
- Obsolete ordering code has a documented same-package substitute （对比 DP83847ALQA56A/NOPB)
- Supports both legacy and common 10/100 Ethernet modes （对比 DP83847ALQA56A/NOPB)
- Integrated PMD and 5 V tolerant I/O （对比 DP83847ALQA56A/NOPB)
设计说明
Follow the manufacturer’s recommended PCB layout for the 56-WQFN device, including short, controlled routing for the twisted-pair differential signals and proper return-path continuity. Place the PHY and external transformer in accordance with the reference layout, and avoid long unprotected copper paths around the high-speed network interface. Review the pin description and recommended land pattern before PCB release.
Provide a stable 3 V to 3.6 V supply and place the required local bypassing capacitors close to the supply and ground pins. Keep the supply and ground planes continuous under the device, and separate sensitive network-side routing from noisy digital and power-conversion sections. The typical power consumption is listed below 351 mW, but the final power budget should include the actual operating mode and surrounding circuitry.
Do not assume that a 56-WQFN footprint alone proves compatibility. Confirm the complete pin assignment, exposed-pad connection, reset behavior, strap pins, magnetics interface, and supply sequencing in the manufacturer datasheet. The verified cross-reference identifies DP83847ALQA56A/NOPB as a direct substitute, so production migration should preserve the package geometry and verify the ordering suffix and lifecycle.
合规信息
The verified product record confirms IEEE 802.3u Parallel Detection support and identifies the product as a 3 V Ethernet PHY, but it does not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for this exact ordering code.
