DP83848QSQX/NOPB - Automotive 10/100 Ethernet PHY | TI
N.º da peça: DP83848QSQX/NOPB ✓ AtivoDP83848QSQX/NOPB Visão geral
An Ethernet physical-layer transceiver, commonly called an Ethernet PHY, converts digital data into the electrical signaling used by twisted-pair Ethernet and receives the corresponding physical signals for conversion into digital data. The PHY sits between a network controller or processor with an MII-compatible interface and the transformer-coupled Ethernet line. In system terms, it is an interface IC within the broader Ethernet connectivity hierarchy.
Key characteristics include one 10/100-Mbps network port, MII serial management interface support, an Automotive Grade 2 designation, a -40°C to 105°C operating-temperature range, and a compact 40-pin WQFN RTA package. The 6 x 6 mm footprint supports space-constrained embedded systems while providing numerous signal and supply connections for controlled Ethernet implementations.
The device is intended for designers of industrial controllers, automotive electronic modules, factory equipment, building infrastructure, and other embedded systems that require a dedicated 10/100-Mbps copper-Ethernet interface. A processor or dedicated Ethernet controller handles higher-level packet processing, while the DP83848QSQX/NOPB manages the physical copper-channel interface. Its extended-temperature qualification supports use in environments where commercial-temperature components are unsuitable.
When laying out a board around the DP83848QSQX/NOPB, place the PHY close to the Ethernet connector and magnetics to minimize high-frequency trace length. Follow the pin-description and layout guidance in the Texas Instruments datasheet when assigning power, ground, clock, data, and management signals. A short, continuous ground plane and careful separation of sensitive receive paths from noisy digital or switching circuitry are central to reliable signal integrity.
The principal engineering trade-off is that this integrated PHY supports 10/100 Mb/s rather than gigabit Ethernet. It therefore suits legacy or deliberately bandwidth-limited embedded networks where 100 Mbps is sufficient. Its automotive grade and extended temperature range distinguish it from standard commercial-temperature PHY options, while system qualification still depends on the complete product environment and applicable test requirements.
This page organizes the manufacturer device identification, package information, technical application guidance, and available drop-in alternatives into one engineering-focused reference. The design notes also emphasize connector placement, return paths, thermal considerations, and the importance of confirming every pin assignment against the current Texas Instruments datasheet before PCB release.
Alternativas drop-in para DP83848QSQX/NOPB — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com DP83848QSQX/NOPB (mesmo formato e footprint) — diferindo em Package, Number of Ports, Auto-MDIX, Cable Reach, Data Rate.
DP83848KSQ/NOPB
✅ Drop-InConsulte o preço
Ver ficha técnica →DP83848JSQ/NOPB
✅ Drop-InConsulte o preço
Ver ficha técnica →DP83848QSQX/NOPB Especificações
| Device Type | Single-port 10/100-Mbps Ethernet physical-layer transceiver |
| Supported Ethernet Rate | 10/100 Mb/s |
| Port Count | 1 port |
| Grade | Automotive Grade 2 |
| Management Interface | MII Serial Management Interface |
| Minimum Operating Temperature | -40°C |
| Maximum Operating Temperature | 105°C |
| Package Type | WQFN (RTA) |
| Contagem de pinos | 40 pins |
| Package Dimensions | 6 x 6 mm |
| Tipo de montagem | Surface mount |
| Ethernet Media Support | 10BASE-T and 100BASE-TX |
Guia de Configuração de Pinos do DP83848QSQX/NOPB 6 x 6 mm
Configuração de pinos para DP83848QSQX/NOPB (pacote 6 x 6 mm). A numeração dos pinos, funções e diagramas de conexão estão definidos no datasheet do fabricante. Consulte-o para o footprint exato e diretrizes de soldagem.
Nenhum dado detalhado de pinagem disponível para DP83848QSQX/NOPB.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
DP83848QSQX/NOPB é adequado para 6 aplicaçãos: Automotive Network Interface, Industrial Ethernet Control, Building Infrastructure Gateway, Factory Sensor Gateway, Security and Surveillance Equipment, Embedded Test and Measurement.
Automotive Network Interface
The DP83848QSQX/NOPB fits automotive electronic modules that require a 10/100-Mbps copper-Ethernet physical layer in a compact 40-pin WQFN RTA package. Its Automotive Grade 2 designation and -40°C to 105°C operating range distinguish it from standard commercial-temperature PHYs. Place the device between the vehicle network processor and the Ethernet magnetic interface. The PHY provides the physical signaling layer for 10BASE-T or 100BASE-TX, while the processor handles framing, addressing, diagnostics, and higher-level protocols. Designers should preserve the manufacturer’s connector-to-PHY placement, maintain continuous return paths, and isolate noisy digital activity from receive circuitry.
Recomendado
Industrial Ethernet Control
The DP83848QSQX/NOPB is suitable for PLCs, machine controllers, remote I/O modules, and factory equipment requiring a dedicated 10/100-Mbps Ethernet port. Its -40°C to 105°C range supports equipment deployed in temperature-variable industrial environments. The PHY connects a network controller or embedded processor to the copper Ethernet channel through external magnetics. A 100-Mbps link is appropriate for supervisory traffic, configuration access, and moderate sensor or machine-data throughput. Keep the PHY close to the connector and magnetics, provide the required clock and decoupling arrangement, and follow the pin-description table when laying out MII, management, and supply connections.
Recomendado
Building Infrastructure Gateway
A building gateway can use the DP83848QSQX/NOPB to provide a 10/100-Mbps Ethernet uplink for controllers, access panels, or security equipment. Its single-port 10/100-Mbps architecture and extended-temperature range suit embedded infrastructure that must function beyond ordinary office conditions. The device handles the physical copper channel while an embedded controller manages protocols and application traffic. Designers should use the manufacturer layout guidance to separate the Ethernet receive path from digital switching nodes and power-converter currents. The 6 x 6 mm WQFN RTA package also preserves board area when the gateway includes multiple external interfaces.
Recomendado
Factory Sensor Gateway
The DP83848QSQX/NOPB can connect a compact sensor concentrator or edge gateway to a 10/100-Mbps industrial Ethernet network. The device’s single 10/100-Mbps port supports control traffic and aggregation from slower sensors without requiring a gigabit PHY. In this architecture, a microcontroller or network controller handles packetization and device management while the PHY provides the physical signaling interface. Its 40-pin WQFN package permits close placement to the board edge and connector. Reliable implementation depends on controlled impedance routing, short magnetics connections, stable MII clocking, and power filtering near the device’s designated supply pins.
Recomendado
Security and Surveillance Equipment
The DP83848QSQX/NOPB is appropriate for access-control terminals, cameras, and surveillance controllers that use 10/100-Mbps Ethernet rather than gigabit networking. The PHY provides the physical interface between a video or control processor and a transformer-coupled copper link. Use the controller for image transport, packet processing, and security services while the DP83848QSQX/NOPB handles the Ethernet physical layer. The compact 40-pin WQFN RTA package supports space-constrained enclosures, and the extended-temperature range can assist with equipment installed outside conditioned spaces. Placement should prioritize short connector and magnetics paths, continuous ground references, and isolation from motor, relay, or LED-driver switching nodes.
Recomendado
Embedded Test and Measurement
The DP83848QSQX/NOPB can provide network access for embedded test equipment, data-acquisition controllers, and service interfaces that only require 10/100-Mbps Ethernet. A suitable host controller can exchange commands, logs, and sampled data over the MII-connected PHY. Its -40°C to 105°C operating range supports instrumentation intended for harsh ambient conditions, while the 6 x 6 mm package leaves room for analog, display, and power sections. To preserve measurement quality, keep switching regulators and high-current digital loads away from the receive path. Use controlled-impedance routing and verify the MII timing, clock source, and decoupling requirements against the manufacturer datasheet.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para DP83848QSQX/NOPB — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | DP83848KSQ/NOPB | DP83848JSQ/NOPB |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 40-WQFN (RTA, 6 x 6 mm) | 40-WQFN (RTA, 6 x 6 mm) | 40-WQFN (RTA, 6 x 6 mm) |
| Device Type | Single-port 10/100-Mbps Ethernet PHY transceiver | Ethernet PHY transceiver | Ethernet PHY transceiver |
| Ethernet Rate | 10/100 Mb/s | 10/100 Mb/s | 10/100 Mb/s |
| Port Count | 1 port | 1 port | 1 port |
| Pin Count | 40 pins | 40 pins | 40 pins |
Principais diferenciais
- Automotive Grade 2 product positioning (vs DP83848KSQ/NOPB)
- Extended-temperature operating range (vs DP83848JSQ/NOPB)
- Single-port focused 10/100-Mbps implementation (vs DP83848KSQ/NOPB)
Notas de projeto
Place the DP83848QSQX/NOPB near the Ethernet connector and magnetic components, and minimize the copper distance between the PHY, magnetics, and connector. Use a continuous ground reference beneath the high-frequency signal paths and terminate impedances according to the manufacturer layout example. Avoid routing the Ethernet receive signals through areas containing switching-regulator traces, relay contacts, or high-current digital return paths.
Assign all 40 WQFN positions from the numbered pin-description table in the Texas Instruments datasheet rather than from a generic WQFN symbol. Confirm the RTA exposed-pad, supply, ground, clock, MII, and management connections against the package drawing. Check whether the layout requires a thermal-pad via pattern and ensure those vias do not compromise the ground-return geometry beneath the device.
Keep the PHY’s local supply network short and place the recommended bypass capacitors at the device pins using the values and placement shown in the Texas Instruments application circuit. Separate the Ethernet PHY’s supply filtering from noisy switching nodes, and preserve the specified voltage tolerance and sequencing limits. Review current consumption and thermal rise at the system’s highest ambient temperature before releasing the power design.
Validate the MII clock source, timing margin, and signal topology against the controller and PHY datasheets before PCB release. MII timing can be sensitive to clock jitter, trace length, and return-path discontinuities. Use the manufacturer’s interface and layout guidance for the chosen operating mode, and confirm that test points or connectors do not introduce stubs into sensitive nets.
Informações de conformidade
Texas Instruments identifies the DP83848QSQX/NOPB as Automotive Grade 2. The exact RoHS, REACH, lead-free, halogen-free, and conflict-minerals statements require confirmation from the current manufacturer product documentation.
