DP83848QSQE/NOPB - 10/100 Ethernet PHY | Texas Instruments
Артикул: DP83848QSQE/NOPB ✓ АктивенDP83848QSQE/NOPB Обзор
An Ethernet physical-layer transceiver, commonly called an Ethernet PHY, converts logical data transmitted by a host controller into electrical signals suitable for an Ethernet cable. In the broader product hierarchy, the DP83848QSQE/NOPB is an Ethernet interface IC, a physical-layer device within the family of semiconductor components used to connect embedded equipment to 10BASE-T and 100BASE-TX networks.
Key features include support for both 10 Mb/s and 100 Mb/s operation, a single Ethernet port, simultaneous MII and RMII interface options, and enhanced ESD protection. These features suit industrial, automotive, communications, and embedded systems where the design must connect a digital host controller to a standard Ethernet network through a magnetic-link or network connector.
The PHY provides a physical-layer interface between the digital Ethernet MAC function and the network medium. MII support suits hosts requiring parallel digital signaling, while RMII reduces the number of host-interface signals when board space is important. Selection between them requires checking the host processor's Ethernet controller pin compatibility, timing requirements, clock arrangement, and reference-design guidance in the manufacturer datasheet.
Typical applications include industrial Ethernet controllers, automotive infotainment and telematics modules, factory automation equipment, building-automation gateways, embedded network bridges, and communications equipment. The 10/100 Mb/s capability provides compatibility with legacy Ethernet infrastructure as well as standard 100BASE-TX links.
The principal design consideration is that PHY integration does not replace Ethernet magnetics or a qualified network connector. Keep the digital MII or RMII interface short, follow the manufacturer's recommended decoupling and layout practices, and verify the exposed-pad connection and thermal design before production release.
This page consolidates the device's interface, package, automotive-grade, and replacement information into an engineering-focused selection guide. It also compares directly related 40-pin Ethernet PHY options and identifies which parameters remain identical, helping designers distinguish functional alternatives from changes that require PCB or firmware review.
Аналоги без доработки для DP83848QSQE/NOPB — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с DP83848QSQE/NOPB (тот же форм-фактор и посадочное место) — отличается по Package, Supply Voltage, Automotive Qualification, Product Type, Auto-MDIX.
DP83848TSQ/NOPB
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Открыть даташит →DP83848QSQE/NOPB Характеристики
| Device Type | 10/100 Mb/s Ethernet physical-layer transceiver |
| Supported Data Rates | 10 Mb/s and 100 Mb/s |
| Port Count | 1 Ethernet port |
| Напряжение питания | 3.3 V |
| Host Interface | MII and RMII |
| Package Type | 40-pin WQFN |
| Package Dimensions | 6 mm x 6 mm |
| Automotive Qualification | AEC-Q100 Grade 2 |
| Temperature Grade | Extended temperature |
| ESD Protection | Enhanced ESD protection |
| Тип монтажа | Surface mount |
| Shipping Format | Tape and reel |
| Ethernet Standard Support | 10BASE-T and 100BASE-TX |
| Maximum Data Rate | 100 Mb/s |
| Minimum Data Rate | 10 Mb/s |
| Transceiver Pin Count | 40 pins |
Руководство по цоколевке DP83848QSQE/NOPB в корпусе 6 mm x 6 mm
Цоколевка для DP83848QSQE/NOPB (корпус 6 mm x 6 mm). Нумерация выводов, функции и схемы подключения определены в техническом описании производителя. Обратитесь к нему для точного посадочного места и рекомендаций по пайке.
Нет подробных данных о распиновке для DP83848QSQE/NOPB.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
DP83848QSQE/NOPB подходит для 6 применениеs: Industrial Ethernet Controller, Automotive Infotainment and Telematics, Building Automation Gateway, Factory Automation Sensor Gateway, Embedded Network Bridge, Communications Equipment.
Industrial Ethernet Controller
The DP83848QSQE/NOPB fits an industrial controller that must connect to a 10BASE-T or 100BASE-TX network while supporting either a broad parallel MII connection or the reduced-signal RMII connection. Its 3.3 V operation, single-port 10/100 Mb/s capability, and extended-temperature identification make it appropriate for equipment operating outside benign office conditions. The PHY can sit beneath a host processor's Ethernet MAC, with the manufacturer application pattern guiding magnetic components, termination, and connector selection. RMII is useful when conserving host pins, while MII can simplify timing analysis with controllers designed for that interface. Production validation should include worst-case temperature, cable insertion, transient immunity, and sustained link operation.
Рекомендуется
Automotive Infotainment and Telematics
The DP83848QSQE/NOPB is appropriate for automotive infotainment, telematics, or gateway electronics requiring an AEC-Q100 Grade 2 Ethernet physical layer. Texas Instruments identifies the Q-Q1 family as offering enhanced ESD protection, extended-temperature operation, and both MII and RMII host interfaces for processor flexibility. In a vehicle network design, the 10/100 Mb/s PHY can connect the host controller to a qualified Ethernet magnetic link while supporting 10BASE-T and 100BASE-TX links. System qualification still depends on the complete product, cable, connector, EMC, and environmental test results; Grade 2 device qualification alone does not qualify the finished vehicle.
Рекомендуется
Building Automation Gateway
A building-automation gateway benefits from the DP83848QSQE/NOPB because it provides a standard 10/100 Mb/s Ethernet endpoint with selectable MII or RMII host connectivity. The 3.3 V single-port PHY can interface with a gateway processor, concentrator, or communications controller while supporting both 10BASE-T and 100BASE-TX network links. Choose RMII when reducing the number of host-controller signals is important, and use MII when the selected host controller is already designed around that wider parallel interface. The product's extended-temperature identity is useful in equipment rooms, but enclosure temperature, startup time, surge exposure, and Ethernet-magnetics selection remain board-level design responsibilities.
Рекомендуется
Factory Automation Sensor Gateway
The DP83848QSQE/NOPB can provide the wired-network connection in a factory sensor gateway that must bridge embedded sensing and control data to a 10/100 Mb/s Ethernet network. Its single-port PHY supports one cable link at either 10 or 100 Mb/s, and the MII/RMII choice allows the gateway processor to be evaluated for pin count, timing, and software support. Place the PHY interface close to the host controller, keep the MII or RMII routing constrained, and follow the manufacturer layout and decoupling guidance. Because industrial ports may face cable transients and poor grounding, verify system-level surge and immunity performance rather than relying only on the PHY's enhanced ESD protection.
Рекомендуется
Embedded Network Bridge
The DP83848QSQE/NOPB is suitable for an embedded network bridge that converts or forwards data between a host controller and standard Ethernet infrastructure. Because the PHY supports 10 and 100 Mb/s operation, it can serve legacy 10BASE-T installations as well as 100BASE-TX links. MII provides a conventional parallel interface for processors with a dedicated MAC, while RMII reduces board-level host connections when pin availability is constrained. The bridge design should include correct clocking, independent reset and bias configuration, network magnetics, and a connector arrangement that minimizes differential-pair imbalance. Validate throughput and link behavior with the intended cable lengths, including repeated insertion and removal of the network cable.
Рекомендуется
Communications Equipment
The DP83848QSQE/NOPB fits communications equipment requiring a conventional 10/100 Mb/s copper-Ethernet service port. A communications controller, protocol processor, or embedded Linux system can use the PHY beneath its Ethernet MAC, with MII or RMII selected according to the host interface. The 40-pin WQFN package supports compact equipment designs, while the 3.3 V supply and 10BASE-T/100BASE-TX compatibility simplify integration with established network infrastructure. Pay particular attention to the exposed-pad ground connection, recommended component placement, and network-side component values. For new links, use the manufacturer data sheet for timing, register initialization, cable-length support, and interface configuration rather than copying values from an unrelated Ethernet PHY.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для DP83848QSQE/NOPB — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | DP83848TSQ/NOPB | DP83848KSQ/NOPB |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 40-pin WQFN (6 mm x 6 mm) | 40-pin WQFN | 40-pin WQFN |
| Data Rate | 10/100 Mb/s | 10/100 Mb/s | 10/100 Mb/s |
Ключевые отличия
- Automotive Grade 2 qualification in the Q-Q1 family (против DP83848TSQ/NOPB)
- Enhanced device-level ESD protection (против DP83848KSQ/NOPB)
- Single-port architecture with selectable MII or RMII connectivity (против DP83848TSQ/NOPB)
Заметки по проектированию
Use the manufacturer land pattern and pin description to assign the 40-pin WQFN footprint. The package includes an exposed thermal pad that must be connected according to the datasheet recommendation for both electrical grounding and heat transfer. Place input and output decoupling capacitors close to their associated supply pins, keep the MII or RMII interface away from the network-side differential pairs, and preserve the recommended copper and via arrangement under the exposed pad. A footprint that visually resembles WQFN-40 is not sufficient evidence that pin numbering and exposed-pad geometry match.
Treat the host interface and Ethernet network interface as separate high-speed domains. Route MII or RMII signals as a short, continuous group between the PHY and host controller, with a common reference plane and no unnecessary test-point stubs. Keep the 100BASE-TX differential pairs tightly coupled, symmetric, and away from switching nodes and magnetic components. Use manufacturer reference layouts to establish layer transitions, pair length balance, and isolation from external connectors because incorrect geometry can impair signal integrity even when the PHY operates correctly in a laboratory link test.
Do not treat the DP83848Q-Q1 family as a generic 10/100 PHY when making an automotive substitution. The target is identified as AEC-Q100 Grade 2 with extended-temperature operation and enhanced ESD protection, while the electrical limits, qualification status, and temperature range of a proposed replacement must be checked independently. Also verify MII versus RMII configuration, required clocking, reset behavior, bias configuration, and the manufacturer application circuit. A package-compatible part can still require software or firmware changes if its register interface or initialization sequence differs.
Validate the WQFN exposed-pad layout under the highest expected ambient temperature and sustained data traffic. The 6 mm by 6 mm body contains a thermal pad, but its effectiveness depends on the recommended via pattern, uninterrupted ground plane, board area, enclosure airflow, and copper finish. Use the manufacturer package thermal information for junction-temperature calculations rather than estimating from package size alone. Include worst-case processor and magnetics heating during 100 Mb/s operation, and inspect the PCB after rework to ensure the exposed pad remains properly soldered.
Plan for Ethernet emissions and immunity as a system-level issue involving the PHY, clock circuitry, magnetic link, connector, cable, and enclosure. The PHY's enhanced ESD protection addresses a defined device-level stress condition but does not eliminate external surge energy or common-mode noise reaching the board. Follow the recommended component values and placement, provide adequate ground return paths, and verify conducted and radiated performance in the final equipment. Avoid changing magnetics or connector layouts during a drop-in replacement without repeating those tests.
Информация о соответствии
Texas Instruments identifies the DP83848Q-Q1 family as AEC-Q100 Grade 2. The retrieved records mention RoHS and REACH only as comparison attributes and do not provide their resulting status, so those fields remain unknown.
