DP83848HSQ/NOPB - 10/100 Ethernet PHY | Texas Instruments
Артикул: DP83848HSQ/NOPB ✓ АктивенDP83848HSQ/NOPB Обзор
An Ethernet PHY is the physical-layer device that converts digital data from a controller into Ethernet signals and converts received cable signals back into digital data. In the broader networking hierarchy, the PHY sits between a MAC or embedded processor and a transformer-coupled RJ45 interface. The DP83848HSQ/NOPB is therefore used when a system needs a dedicated 10/100-Mbps copper-Ethernet physical layer rather than a higher-speed multi-port Ethernet controller.
The main device characteristics are its single-channel 1/1 transceiver configuration, 10/100-Mbps data-rate support, 3 V to 3.6 V operating supply, and extended-temperature capability from -40 C to +125 C. The 40-WQFN (RTA) package is intended for surface-mount designs requiring a compact footprint. Auto-MDIX simplifies physical installation by supporting automatic crossover detection and correction.
The DP83848x family is positioned for embedded systems where interoperability, reliability, and compactness are important. The manufacturer describes performance beyond the IEEE specifications, while the product family supports the common MII serial management interface identified in the component listings. The device is used as the physical interface between an embedded Ethernet MAC and the external magnetics and RJ45 connector.
Typical applications include industrial embedded controllers, automotive electronics, communications equipment, and network appliances that require a 10/100-Mbps copper Ethernet port. The extended-temperature range makes the DP83848HSQ/NOPB suitable for systems exposed to temperature extremes, provided that the complete board, magnetics, and enclosure are evaluated for the same environmental requirements.
When laying out the PCB, place the PHY close to the transformer and RJ45 connector to minimize high-frequency differential-pair routing and return-path discontinuity. Follow the manufacturer pin-description table and layout guidance for supply decoupling, exposed-pad thermal connection, clock requirements, and signal return paths. Use the exact package drawing and pin assignment for the production design rather than relying on a generic QFN footprint.
Аналоги без доработки для DP83848HSQ/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 DP83848HSQ/NOPB (тот же форм-фактор и посадочное место) — отличается по Package, Supply Voltage, Product Type, Operating Temperature, Auto-MDIX.
DP83848KSQ/NOPB
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Открыть даташит →DP83848HSQ/NOPB Характеристики
| Product Type | 10/100-Mbps Ethernet PHY transceiver |
| Number of Drivers/Receivers | 1/1 |
| Скорость передачи данных | 10/100 Mbps |
| Напряжение питания | 3 V to 3.6 V |
| Тип интерфейса | MII serial management interface |
| Корпус | 40-WQFN (RTA), 6 x 6 mm |
| Количество выводов | 40 pins |
| Exposed Pad | Yes |
| Рабочая температура | -40 C to +125 C |
| Тип монтажа | Surface mount |
| Auto-MDIX | Supported |
| Cable Reach | Beyond 137 m of Cat-V cable |
| Ethernet Support | 10BASE-T and 100BASE-TX |
| Статус RoHS | Compliant |
| Automotive Qualification | AEC-Q100 Grade 2 |
| Termination | Tape and reel |
| Выходная конфигурация | Single channel |
| Operating Supply | 3.3 V |
| Standards Reference | IEEE 802.3 |
Руководство по цоколевке DP83848HSQ/NOPB в корпусе 40-wqfn (rta), 6 x 6 mm
Цоколевка для DP83848HSQ/NOPB (корпус 40-wqfn (rta), 6 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 DP83848HSQ/NOPB.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
DP83848HSQ/NOPB подходит для 6 применениеs: Industrial Embedded Ethernet Controller, Automotive Network Interface, Communications Gateway, Network Appliance Management Port, IoT Sensor Hub, Industrial Test and Measurement Instrument.
Industrial Embedded Ethernet Controller
The DP83848HSQ/NOPB fits an embedded controller that requires a dedicated 10/100-Mbps copper-Ethernet PHY. Its 3 V to 3.6 V operating supply aligns with 3.3 V embedded systems, while the -40 C to +125 C range supports equipment operating across severe temperature environments. Place the PHY near the transformer and RJ45 connector to shorten differential-pair routing, provide a continuous return path, and minimize susceptibility to EMI. Auto-MDIX simplifies field installation by allowing straight-through and crossover cable arrangements without manual configuration. The external transformer and RJ45 connector must still be selected from the manufacturer reference design and evaluated for isolation, impedance, and cable reach.
Рекомендуется
Automotive Network Interface
The DP83848HSQ/NOPB is suitable for an automotive embedded network interface requiring a single 10/100-Mbps Ethernet PHY. The part is identified as AEC-Q100 Grade 2 and supports operation from -40 C to +125 C, making it appropriate for temperature-varying vehicle electronics. Use it with the appropriate automotive-rated Ethernet magnetics, connector, and controller. PCB placement should keep the PHY close to the line-side components, preserve symmetric differential routing, and follow the manufacturer power and exposed-pad guidance. System qualification must cover transient immunity, conducted and radiated emissions, vibration, temperature cycling, and the quality requirements applicable to the finished vehicle platform.
Рекомендуется
Communications Gateway
A communications gateway can use the DP83848HSQ/NOPB as its 10/100-Mbps copper-Ethernet physical layer when an embedded processor already provides an MII-compatible MAC interface. The single 1/1 transceiver arrangement simplifies the connection between the digital controller and the isolated network transformer. The 3 V to 3.6 V supply range supports 3.3 V logic systems, and Auto-MDIX reduces installation errors in deployed equipment. For gateways operating in electrically noisy environments, use controlled-impedance differential pairs, solid ground-plane continuity, short supply loops, and appropriately selected magnetics. Validate the complete PHY, transformer, cable, and RJ45 network during EMC qualification rather than testing the PHY alone.
Рекомендуется
Network Appliance Management Port
The DP83848HSQ/NOPB can provide a dedicated management or service Ethernet port on a network appliance where 10/100-Mbps copper connectivity is sufficient. The compact 40-WQFN (RTA) package reduces board-area demand, while its MII interface supports integration with a controller that manages the MAC layer. The extended -40 C to +125 C operating range gives appliance designers a wide environmental envelope for industrial, telecom-adjacent, and unattended equipment. Keep the Ethernet magnetics close to the PHY, provide the recommended decoupling, and isolate noisy switching or processor regions from the differential pair. If the product requires higher throughput, a multi-gigabit PHY would be more appropriate than this 10/100-Mbps device.
Рекомендуется
IoT Sensor Hub
The DP83848HSQ/NOPB suits an IoT sensor hub that must bridge a low-power processor or microcontroller to a wired 10/100-Mbps Ethernet backbone. The 3.3 V supply class allows integration with conventional embedded logic, and Auto-MDIX avoids cable-type constraints when hubs are installed by field technicians. The device's -40 C to +125 C range supports industrial IoT installations that may operate outside room-temperature conditions. Place the PHY and magnetics together near the connector rather than near a noisy processor section, maintain differential-pair geometry, and use a continuous reference plane beneath the pair. The hub should also implement link monitoring and fault recovery consistent with the controller firmware.
Рекомендуется
Industrial Test and Measurement Instrument
The DP83848HSQ/NOPB is appropriate for an industrial test or measurement instrument that needs an Ethernet service connection for remote control, logging, or data transfer. Its 3 V to 3.6 V operating supply, extended -40 C to +125 C range, and support for cable links beyond 137 meters of Cat-V cable suit equipment distributed across industrial environments. Use the device behind the appropriate network transformer and RJ45 connector, and separate the PHY's supply return path from high-current measurement circuits. Short, impedance-controlled differential traces and careful exposed-pad grounding improve repeatability. Validate the complete interface for EMC, ground-offset effects, and temperature performance, because enclosure temperature alone does not guarantee compliance throughout the instrument.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для DP83848HSQ/NOPB — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | DP83848KSQ/NOPB | DP83848QSQE/NOPB |
|---|---|---|---|
| Package | 40-WQFN (RTA), exposed pad | 40-WQFN (RTA), exposed pad | 40-WQFN (RTA), exposed pad |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Data Rate | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps |
| Number of Channels | 1 | 1 | 1 |
| Number of Drivers/Receivers | 1/1 | 1/1 | 1/1 |
| Supply Voltage | 3 V to 3.6 V | 3.3 V | 3.3 V |
| Interface Type | MII, RMII | MII, RMII | MII, RMII |
Ключевые отличия
- Extended-temperature operation (против DP83848QSQE/NOPB)
- Automotive-grade identification (против DP83848QSQE/NOPB)
- Compact single-channel integration (против DP83848KSQ/NOPB)
Заметки по проектированию
Place the DP83848HSQ/NOPB close to the Ethernet transformer and RJ45 connector. Keep the 10BASE-T and 100BASE-TX differential pairs short, matched, and routed over a continuous reference plane. Avoid plane splits, test pads, and unrelated high-speed crossings beneath the pairs. Route supply and ground connections with low inductance and place the manufacturer-recommended decoupling capacitors at the relevant power pins.
The 40-WQFN package includes an exposed pad, but that pad is not automatically a sufficient heat spreader. Connect it to the ground plane using the manufacturer land pattern and via arrangement. Keep heavy thermal copper clear of sensitive Ethernet return paths where practical. Use a top-layer copper pour, ground-plane area, and through-vias to distribute heat while preserving the required return-current path.
Do not treat a generic 40-pin QFN symbol as a verified substitute for the RTA package. Confirm pin numbering, exposed-pad dimensions, clock requirements, strap options, and supply connections in the Texas Instruments DP83848H datasheet. Also check the external transformer's turns ratio, common-mode network, and isolation requirements; a PHY-to-RJ45 connection cannot be qualified independently of those components.
Keep switching regulators, processors, and high-current return paths away from the PHY and line-side magnetics. Use the shortest practical ground return for the exposed pad, avoid accidental antenna-like copper extensions, and follow the manufacturer reference layout for supply filtering and magnetic-device placement. EMC results must be checked with the final enclosure, cable, connector, and power-supply arrangement because these structures materially affect emissions and immunity.
Информация о соответствии
RoHS compliance and AEC-Q100 Grade 2 identification are stated in the product listings. Other compliance characteristics are not stated and remain unknown.
