DP83846AVHG - 10/100 Ethernet PHY | Texas Instruments
N.º da peça: DP83846AVHG ✗ Fim de vidaDP83846AVHG Visão geral
An Ethernet physical-layer transceiver, commonly called an Ethernet PHY, is the component that translates logical data into electrical signaling compatible with twisted-pair Ethernet infrastructure. Within the network-interface hierarchy, an Ethernet PHY sits between a MAC or processor and an RJ45 magnetics interface. The DP83846AVHG therefore belongs to the interface-IC and network-interface-controller ecosystem rather than acting as a standalone general-purpose processor or memory device.
The verified product information identifies the DP83846AVHG as a single 10/100 Ethernet transceiver supporting both 10BASE-T and 100BASE-TX protocols. Its stated cable compatibility includes Category 3 cabling for 10 Mb/s operation and Category 5 unshielded twisted-pair cabling for 100BASE-TX operation. Distributor listings additionally identify the physical package as an 80-terminal square gull-wing LQFP in a 12 x 12 mm outline.
Because the PHY combines the PMD sublayers with the Ethernet physical interface, it can simplify the hardware portion of a copper Ethernet design. The host-side interface remains coupled to the function of the associated MAC or embedded Ethernet controller, while the line-side implementation must include the specified magnetics, connector, protection, and external circuitry recommended by the manufacturer. This division keeps protocol handling separate from analog signal transmission across the cable.
Typical uses include industrial control equipment, embedded Ethernet gateways, factory automation, communications infrastructure, test equipment, and compact embedded systems that need 10/100-Mb/s copper connectivity. The dual-rate support is useful where equipment must communicate over installed 10-Mb/s or 100-Mb/s networks without requiring a gigabit-only physical layer.
The principal design consideration is that PCB layout, magnetic-component selection, cable-side termination, supply quality, and thermal performance can be as important as the nominal PHY capability. Designers should use the manufacturer application guidance for high-speed trace geometry, component placement, isolation, and copper-versus-fibre interfaces where applicable. External Ethernet magnetics are normally required between the PHY and the RJ45 connector unless the chosen interface architecture specifies otherwise.
This product page consolidates the verified package, protocol, cable, and distributor information for DP83846AVHG and adds practical application guidance, sourcing questions, and replacement context. It distinguishes documented values from parameters that still require confirmation from the full Texas Instruments datasheet, helping engineers make a traceable initial selection before completing PCB-level validation.
Alternativas drop-in para DP83846AVHG — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
DP83846AVHG/NOPB
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
DP83846AVHG Especificações
| Product Type | Single 10/100 Ethernet physical-layer transceiver |
| Supported Ethernet Rates | 10 Mb/s and 100 Mb/s |
| 10BASE-T Support | Supported |
| 100BASE-TX Support | Supported |
| Category 3 Cable Support | 10 Mb/s operation |
| Category 5 Unshielded Twisted-Pair Support | Supported for 100BASE-TX operation |
| Integrated PMD Sublayers | Integrated |
| Number of Ports | 1 port |
| Encapsulamento | 80-pin LQFP, 12 x 12 mm |
| Terminal Count | 80 terminals |
| Lead Form | Gull wing |
| Package Shape | Square |
| Temperature Grade | Commercial |
| Tipo de montagem | Surface mount |
Guia de Configuração de Pinos do DP83846AVHG square
Configuração de pinos para DP83846AVHG (pacote square). 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 DP83846AVHG.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
DP83846AVHG é adequado para 6 aplicaçãos: Industrial Control Ethernet, Embedded Ethernet Gateway, Factory Automation Terminal, Test and Measurement Equipment, Network Communications Module, Legacy 10/100 Network Appliance.
Industrial Control Ethernet
The DP83846AVHG fits industrial control equipment that requires a single copper Ethernet port and must operate across both 10BASE-T and 100BASE-TX networks. Its documented support for Category 3 and Category 5 unshielded twisted-pair media allows reuse of installed plant cabling, while the integrated PMD sublayers simplify the physical layer beneath an industrial controller or communications processor. The 80-pin LQFP provides a defined PCB footprint for control equipment with room for external Ethernet magnetics. Design validation should still confirm the operating-temperature range, supply limits, isolation requirements, EMC performance, and timing characteristics not present in the retrieved snippets.
Recomendado
Embedded Ethernet Gateway
The DP83846AVHG is appropriate for an embedded Ethernet gateway that must connect a microcontroller or application processor to a 10/100-Mb/s copper network. Its single 10/100 Ethernet transceiver supports both 10BASE-T and 100BASE-TX, allowing the gateway to operate on installed Fast Ethernet infrastructure without requiring a higher-rate PHY. The physical-layer role is separate from packet processing, so the host controller must provide the MAC behavior required by the interface. External magnetics, protection, controlled layout, and verified supply sequencing remain essential for predictable link behavior.
Recomendado
Factory Automation Terminal
The DP83846AVHG can serve a factory terminal that communicates over existing 10 Mb/s or 100 Mb/s twisted-pair infrastructure. Category 3 support for 10BASE-T and Category 5 support for 100BASE-TX make it useful where both legacy and modern copper segments may coexist. The device's single-port format matches compact HMI, sensor-hub, and remote I/O designs that require one network connection. Before deployment, verify the commercial temperature grade, isolation strategy, surge and conducted-immunity requirements, connector choice, and cable length against the complete Texas Instruments datasheet and system standards.
Recomendado
Test and Measurement Equipment
The DP83846AVHG is suitable for test and measurement instruments that need a conventional 10/100 Ethernet management or data port. Supporting both 10BASE-T and 100BASE-TX allows the instrument to connect to laboratory and service networks that may operate at either rate. Its integrated physical-layer function reduces the copper-interface portion of the design while leaving packet framing and host management to the associated controller. Good implementation still depends on the manufacturer-recommended magnetics and high-speed layout, clean supplies, controlled grounding, and verified isolation for bench, industrial, or remotely accessed equipment.
Recomendado
Network Communications Module
The DP83846AVHG can be used in a compact communications module that bridges a host processor to a 10/100-Mb/s copper Ethernet segment. Its support for Category 3 and Category 5 unshielded twisted-pair cabling makes it adaptable to existing infrastructure, and the single-port PHY can operate at 10 Mb/s or 100 Mb/s as required by the network. The implementation should include the approved Ethernet magnetic components, appropriately terminated differential pairs, connector protection, and a PCB layout reviewed against the manufacturer's layout guidance. Lifecycle availability must also be addressed because verified substitute information describes the original device as discontinued.
Recomendado
Legacy 10/100 Network Appliance
The DP83846AVHG is a practical fit when maintaining a legacy network appliance that must retain compatibility with both 10 Mb/s and 100 Mb/s Ethernet copper links. The 10BASE-T and 100BASE-TX support permits a single physical-layer implementation across mixed-speed installations, while Category 3 and Category 5 cable support broadens deployment options. The 80-pin LQFP is appropriate for a board designed specifically around that footprint. For a redesign, however, a current PHY with documented lifecycle availability may reduce sourcing risk, so engineers should compare long-term supply, software support, thermal performance, and certification requirements.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para DP83846AVHG — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | DP83846AVHG/NOPB |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Package | 80-pin LQFP (12 x 12 mm) | 80-pin LQFP (12 x 12 mm) - same documented package |
| Product Function | Single 10/100 Ethernet transceiver | Single 10/100 Ethernet transceiver |
| Supported Ethernet Rates | 10 Mb/s and 100 Mb/s | 10 Mb/s and 100 Mb/s |
| 10BASE-T Support | Supported | Supported |
| 100BASE-TX Support | Supported | Supported |
| Cable Support | Category 3 for 10BASE-T; Category 5 UTP for 100BASE-TX | Category 3 for 10BASE-T; Category 5 UTP for 100BASE-TX |
| Number of Ports | 1 port | 1 port |
| Ordering Designation | DP83846AVHG | NOPB finish or packaging designation; detailed difference not present in verified snippets |
Principais diferenciais
- Dual-rate 10/100 copper support (vs DP83822IRHBR)
- Documented Category 3 and Category 5 cable operation (vs DP83822IRHBR)
- Same-footprint ordering option (vs DP83822IRHBR)
- Single-port physical-layer integration (vs DP83822IRHBR)
Notas de projeto
Implement the copper interface according to the Texas Instruments manufacturer datasheet rather than treating the 80-pin LQFP footprint as sufficient by itself. Keep the PHY-to-magnetics differential pairs short, impedance-controlled, and directly aligned, with minimal vias and no unnecessary stubs. Place the magnetics close to the PHY and the protection network close to the connector. The retrieved material does not provide the required trace dimensions, so use the official layout guidance rather than estimating them.
Separate and decouple the PHY supply rails according to the official datasheet, paying particular attention to any analog and digital supply relationship. Place the prescribed bypass capacitors at their specified pins with short ground paths, and verify startup, operating current, and tolerance against the actual operating temperature. Because supply-voltage limits and decoupling values are absent from the verified snippets, they must not be inferred from generic Ethernet-PHY designs.
Do not classify DP83822IRHBR as a drop-in replacement merely because it appears in a functional-substitute list. The verified data does not establish a common 80-pin footprint, identical pinout, or equivalent host and line-side interfaces. A populated-board replacement requires a mechanical and electrical review of every changed connection. If lifecycle risk is the main concern, redesigning around a current 10/100 PHY may be safer than forcing a poorly documented substitute.
Treat each 100BASE-TX differential pair as a controlled-impedance transmission line over its routed length. Avoid test pads, long branches, and copper pours that unintentionally interrupt return paths under the magnetics or connector. Keep switching supplies and high-current paths away from the PHY and magnetics, and observe the manufacturer's component-placement and layer-stack guidance. Actual differential impedance and pair spacing must come from the official layout material.
Estimate dissipation only after obtaining the verified supply voltage, current, and thermal data. The LQFP exposes its thermal behavior through the package and board, so copper area, via arrangement, ambient temperature, and the actual operating mode materially affect junction temperature. The supplied search snippets do not provide dissipation, junction-temperature limits, or thermal resistance; use the manufacturer datasheet and a PCB thermal calculation rather than assigning generic values.
Informações de conformidade
The verified web results do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for DP83846AVHG. AEC-Q100 is marked not applicable because this Ethernet physical-layer transceiver is not presented as an automotive-qualified device in the supplied data.
