DP83934CVUL-25 - 25 MHz Ethernet Controller | Texas Instruments
N.º da peça: DP83934CVUL-25 ✗ Fim de vidaDP83934CVUL-25 Visão geral
An Ethernet network interface controller is an interface IC that connects a digital system to an Ethernet physical layer. It manages network-frame processing and provides the parallel data path required by compatible system logic. The DP83934 family belongs to the wider networking hierarchy of Ethernet controller, network interface controller, interface IC, and semiconductor.
The DP83934CVUL-25 is identified as a 10 Base-T PHY parallel-interface Ethernet controller. A 10Base-T implementation uses twisted-pair cabling and is suited to legacy 10 Mb/s Ethernet systems, embedded network equipment, network interface adapters, and industrial or commercial control systems that retain compatibility with an existing SONIC-T design. The parallel interface provides a direct connection route to compatible bus and buffer logic rather than relying on a serial transceiver.
Key characteristics include a 25 MHz system-oriented design, a 160-PQFP package, and a 4.75 V to 5.25 V supply requirement. Its 140 mA operating supply current is a key design consideration when calculating total system power and thermal behavior. The commercial 0 °C to 70 °C range distinguishes this ordered variant from industrial- or extended-temperature versions.
The DP83934 incorporates the functions required by a dedicated Ethernet controller, including network-interface control, frame handling, and twisted-pair connectivity. These functions allow a host processor or embedded controller to communicate through Ethernet while separating medium-access and frame-processing tasks from the system processor. This division can reduce host-side protocol overhead in equipment designed around the DP83934 family.
PCB implementation requires careful attention to the 160-pin PQFP footprint, high-density escape routing, ground distribution, and signal integrity. The 28 mm by 28 mm package provides ample routing area compared with a compact QFP, but it still demands a disciplined power and return-path layout. Decoupling should be placed directly across the relevant supply pins, and unused inputs should be handled according to the manufacturer’s pin-description and application guidance.
This page combines the documented device identity, electrical envelope, package information, lifecycle status, application guidance, and clearly identified family alternatives. It is intended to help engineers assess whether the obsolete DP83934CVUL-25 remains appropriate for legacy maintenance, original-equipment repair, or a controlled redesign rather than new high-volume networking development.
Alternativas drop-in para DP83934CVUL-25 — 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 DP83934CVUL-25 (mesmo formato e footprint).
DP83934CVUL-3V
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
DP83934CVUL-25/NOPB
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
DP83934CVUL-20
✅ Drop-In ⚠️ Especificações não verificadasConsulte o preço
Ver ficha técnica →DP83934CVUL-25 Especificações
| Controller Type | Network Interface Controller (NIC) |
| Ethernet Standard | 10 Base-T |
| System Clock | 25 MHz |
| Host Interface | Parallel interface |
| Network Interface | Twisted Pair |
| Tensão de alimentação de operação | 4.75 V to 5.25 V |
| Operating Supply Current | 140 mA |
| Faixa de temperatura de operação | 0 °C to +70 °C |
| Temperature Grade | Commercial |
| Package Type | 160-PQFP |
| Package Dimensions | 28 mm × 28 mm |
| Number of Terminals | 160 |
| Terminal Form | Gull wing |
| Package Shape | Square |
| Primary Device Family | SONIC-T |
| Manufacturer | National Semiconductor (Texas Instruments) |
| Status do ciclo de vida | Obsolete / end of life |
Guia de Configuração de Pinos do DP83934CVUL-25 square
Configuração de pinos para DP83934CVUL-25 (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 DP83934CVUL-25.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
DP83934CVUL-25 é adequado para 6 aplicaçãos: Legacy 10Base-T Network Interface, Industrial Control Terminal, Embedded Network Adapter, Network Interface Card Retrofit, Test and Measurement Controller, Obsolete Equipment Maintenance.
Legacy 10Base-T Network Interface
The DP83934CVUL-25 fits legacy 10Base-T equipment that requires a dedicated Ethernet controller with a twisted-pair interface and a parallel system data path. Its 25 MHz SONIC-T organization provides hardware assistance for network-frame handling, while the 160-pin PQFP exposes the complete controller interface for external bus and buffer connections. The device operates from 4.75 V to 5.25 V, which aligns with conventional 5 V networking hardware, and its listed 140 mA operating supply current should be included in the equipment power budget. This role is most appropriate for repair and continuation of an existing SONIC-T design rather than a new platform.
Recomendado
Industrial Control Terminal
The DP83934CVUL-25 can serve as the 10Base-T network controller in an industrial control terminal built around an existing SONIC-T-compatible host bus. Its parallel interface allows frame traffic to connect through dedicated logic rather than through a serial Ethernet PHY, and the 4.75 V to 5.25 V supply range fits a regulated 5 V control-rail design. The commercial 0 °C to 70 °C range suits indoor equipment with controlled ambient conditions. Because the controller is obsolete or end of life, such use is primarily appropriate for sustaining installed equipment; new industrial products should evaluate lifecycle, driver support, and cybersecurity requirements alongside network performance.
Recomendado
Embedded Network Adapter
The DP83934CVUL-25 is suitable for an embedded network adapter that must reproduce the frame-handling behavior and parallel bus arrangement of a legacy Ethernet design. The 10Base-T twisted-pair interface supports connection to copper Ethernet infrastructure, while the controller’s dedicated architecture reduces the amount of Ethernet processing handled by a general-purpose embedded processor. Its 25 MHz operating architecture and 5 V-class supply are compatible with many established embedded subsystems. Engineers should reserve sufficient board area for the 160-pin PQFP and provide careful routing of parallel data, address, control, and clock signals to maintain signal integrity.
Recomendado
Network Interface Card Retrofit
A retired instrumentation or computer platform can use the DP83934CVUL-25 when its original controller must be reproduced with the same parallel SONIC-T interface and twisted-pair Ethernet connection. The 160-PQFP package supports conventional gull-wing routing and is practical for a multilayer retrofit board with adequate component spacing. The 4.75 V to 5.25 V operating range permits integration with the system’s regulated 5 V rail, and the specified 140 mA operating current provides a baseline for supply planning. Before committing to a retrofit, confirm every signal, reset requirement, timing parameter, and network isolation arrangement against the manufacturer datasheet.
Recomendado
Test and Measurement Controller
The DP83934CVUL-25 can provide legacy Ethernet connectivity in test and measurement equipment designed around its dedicated 25 MHz SONIC-T controller architecture. The parallel interface supports connection to acquisition, control, and buffering logic, while the twisted-pair interface enables 10Base-T communications for configuration or monitoring. A regulated 5 V rail within the 4.75 V to 5.25 V range is required, and the listed 140 mA operating current must be coordinated with the instrument’s power budget. The commercial temperature grade limits unrestricted use in hot industrial environments, while the obsolete lifecycle status makes this approach most defensible as a maintenance or exact-compatibility solution.
Recomendado
Obsolete Equipment Maintenance
The DP83934CVUL-25 is most relevant to maintenance, repair, and controlled reproduction of obsolete network equipment whose original Ethernet design depends on the parallel SONIC-T interface and 10Base-T twisted-pair connection. Its identified 25 MHz architecture, 4.75 V to 5.25 V supply range, and 160-pin PQFP footprint allow an engineer to reproduce the original board architecture without introducing a different interface topology. Procurement should emphasize traceability, condition, and equivalence because the device is listed as obsolete or end of life. For long-term support, consider a full redesign using a maintained controller and a documented software migration plan rather than assuming that a family suffix variant is interchangeable.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para DP83934CVUL-25 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | DP83934CVUL-3V | DP83934CVUL-25/NOPB | DP83934CVUL-20 |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 160-PQFP (28x28) | 160-PQFP (28x28) | 160-PQFP (28x28) | 160-PQFP (28x28) |
Principais diferenciais
- Identified 25 MHz SONIC-T controller configuration (vs DP83934CVUL-20)
- Documented commercial operating range (vs DP83934CVUL-3V)
- Exact manufacturer ordering identity for legacy reproduction (vs DP83934CVUL-25/NOPB)
Notas de projeto
Design the board around the exact 160-pin gull-wing PQFP footprint and assign every terminal using the manufacturer pin-description table. Keep the parallel address, data, control, and clock escape routes short and pair them with continuous ground references. Because the package is large and lead-dense, use a multilayer PCB and consider the lead-frame geometry when assigning component-side routing. Do not infer an alternate package diagram from the 160-pin count alone.
Allocate the regulator and local decoupling for a nominal 5 V rail constrained to the documented 4.75 V to 5.25 V range. The listed 140 mA operating supply current is a useful baseline, but the regulator capacity should also account for processor I/O current and switching margin. Place the required bypass capacitors next to their associated supply terminals and provide a low-impedance ground-plane connection. Check all rail tolerances and startup sequencing against the manufacturer recommendations.
Treat the 25 MHz system clock and parallel interface as a coordinated signal-integrity design. Route the clock away from noisy network and power-conversion nodes, provide a continuous reference plane, and use source-end termination only when supported by the manufacturer’s circuit recommendations. Review setup and hold timing at the connected logic devices. The parallel bus should not be assumed to tolerate additional loading, stubs, or connector branches without an appropriate signal-integrity analysis.
Do not treat the -20, -3V, or /NOPB suffixes as automatically interchangeable with DP83934CVUL-25. Confirm the ordering table, pin configuration, clock requirement, supply behavior, reset state, timing, temperature grade, and lead-finish requirements before substitution. The product is obsolete or end of life, so a procurement lot that does not exactly match the approved device can create qualification risk even when its package dimensions appear identical.
Informações de conformidade
The device is a legacy commercial Ethernet controller rather than an automotive-qualified product. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status were not identified in the available manufacturer or distribution records.
