DP83858VF - 8-Port 100 Mb/s Ethernet Repeater | Texas Instruments
N.º da peça: DP83858VF ✗ Fim de vida| Qtd. | Preço unitário | Total |
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| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
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DP83858VF Visão geral
An Ethernet repeater controller is an interface IC within the Ethernet networking hierarchy. It coordinates multiple 100 Mb/s network segments, regenerates and retimes received signals, and provides the control logic needed by low-port-count managed or unmanaged repeater systems. The DP83858 targets equipment that must extend Fast Ethernet connectivity across several ports without using eight separate external repeater controllers.
The controller's defining features include support for as many as eight 100 Mb/s ports, 100 Mb/s TX/T4 operation, 5 V single-supply operation, and compatibility with the IEEE 802.3 repeater requirements identified in the manufacturer documentation. The 295 mA supply-current figure provides a basis for power budgeting, while the 132-PQFP mechanical format supports a substantial pin count for port-facing signals and control functions.
The DP83858 belongs to the interface-controller category rather than a general-purpose transceiver. Its TX/T4 repeater architecture is intended for high-speed Ethernet systems and legacy Fast Ethernet infrastructure. Compared with a single-port PHY, the device concentrates repeater management and media-interface control for an eight-port system, reducing board-level component count while retaining a standardized networking architecture.
Typical applications include managed Fast Ethernet switches, unmanaged low-port-count switches, Ethernet repeaters, industrial network concentrators, and legacy 100BASE-TX equipment. Installation requires careful PCB routing for high-speed differential pairs, solid supply decoupling, controlled return paths, and compliance with the manufacturer's recommended layout and termination practices.
The main design trade-off is specialization: DP83858VF addresses multiport Fast Ethernet repeater control rather than modern multi-gigabit or single-port integrated PHYs. Legacy-system maintenance, industrial connectivity, and equipment replication are stronger reasons to select it than new high-bandwidth designs.
This page consolidates the supplied manufacturer-related data, distributor listing, package information, and Ethernet application context. It also distinguishes verified specifications from parameters that require confirmation from the complete datasheet before schematic or PCB release.
Alternativas drop-in para DP83858VF — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
Nenhuma alternativa drop-in disponível para este produto.
Solicitar alternativasDP83858VF Especificações
| Controller Type | Ethernet repeater interface controller |
| Device Designation | 100RIC8 |
| Taxa de dados | 100 Mb/s |
| Interface | IEEE 802.3 |
| Supported Port Count | Up to 8 ports |
| Tensão de alimentação | 4.75 V to 5.25 V |
| Corrente de alimentação | 295 mA |
| Architecture | 100 Mb/s TX/T4 repeater interface controller |
| Encapsulamento | 132-PQFP (24.13 mm x 24.13 mm) |
| Alternate Package Description | 132-BQFP |
| Tipo de montagem | Surface mount |
| Packaging | Tray |
| Target Applications | Managed and unmanaged repeaters |
| Network Speed Class | Fast Ethernet, 100BASE-TX |
| Repeater Compliance | IEEE 802.3 repeater clause 27 |
| Manufacturer | National Semiconductor, now associated with Texas Instruments |
Guia de Configuração de Pinos do DP83858VF 132-bqfp
Configuração de pinos para DP83858VF (pacote 132-bqfp). 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 DP83858VF.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
DP83858VF é adequado para 6 aplicaçãos: Managed Fast Ethernet Repeater, Unmanaged Eight-Port Ethernet Switch, Legacy 100BASE-TX Equipment Maintenance, Industrial Network Concentrator, Ethernet Test and Measurement Equipment, Legacy Network Backplane Interconnect.
Managed Fast Ethernet Repeater
The DP83858VF fits a managed 100 Mb/s repeater platform because it is designed around the 100RIC8 function and supports as many as eight 100 Mb/s ports, according to the supplied National Semiconductor documentation. Place it as the central repeater-interface controller and connect the required external media and management circuitry around it. The verified 4.75 V to 5.25 V supply range and 295 mA current provide the initial power budget, while IEEE 802.3 clause 27 compatibility supports legacy repeater design intent. Because the controller is specialized, verify all pin functions, timing, and external-component requirements in the complete datasheet before schematic release.
Recomendado
Unmanaged Eight-Port Ethernet Switch
The DP83858VF can be evaluated for an unmanaged low-port-count Ethernet system built around repeated 100 Mb/s links. Its documented support for up to eight ports reduces the number of repeater-controller blocks needed compared with a design using many discrete port controllers. The controller still requires appropriate Ethernet media circuits, power regulation, isolation or magnetics as required by the system, and signal-integrity-conscious routing. Its 132-PQFP package makes careful fanout and via planning important. The design should be validated against the complete manufacturer documentation rather than assuming that the interface controller alone implements a complete switch.
Recomendado
Legacy 100BASE-TX Equipment Maintenance
DP83858VF is relevant when repairing or replicating equipment built around 100RIC8-era 100 Mb/s TX/T4 repeater interfaces. Its eight-port capability and IEEE 802.3 repeater clause 27 focus allow an existing architecture to be retained without immediately migrating to a newer Ethernet PHY family. The main benefits are design continuity and potentially lower board-level redesign effort when the original footprint, pinout, and timing are confirmed. Designers must still inspect the complete data record for electrical limits and pin definitions, verify current sourcing, and assess whether the legacy architecture meets the product's bandwidth and lifecycle requirements.
Recomendado
Industrial Network Concentrator
For an industrial network concentrator, DP83858VF offers a documented path to multiple 100 Mb/s repeater connections in one controller. The 4.75 V to 5.25 V operating range and 295 mA supply-current specification support early power-tree planning, while the eight-port limit helps define the maximum segment count. Industrial use requires additional confirmation of temperature range, EMC behavior, isolation strategy, surge protection, and long-term component availability, none of which are fully stated in the supplied snippet. Treat the controller as the central digital interface block and validate each external media path for signal integrity and fault tolerance.
Recomendado
Ethernet Test and Measurement Equipment
DP83858VF can support legacy Ethernet test equipment that needs several controlled 100 Mb/s repeater interfaces. Its controller-oriented design allows a compact implementation of repeated links for diagnostic or configuration equipment, subject to the required external circuitry. The fixed 5 V supply range makes power sequencing and decoupling straightforward in concept, but the design still needs an accurate budget for the 295 mA operating figure and any additional loads. Use controlled impedance routing and verify the complete manufacturer's timing and pinout information before connecting instrumentation or test fixtures.
Recomendado
Legacy Network Backplane Interconnect
The DP83858VF may be suitable for a legacy backplane or concentrator architecture built to distribute multiple Fast Ethernet repeater channels. Its eight-port controller focus and IEEE 802.3 repeater compatibility provide a clear architectural reason to use it when preserving an existing 100 Mb/s design. The large 132-PQFP package requires careful escape routing from the device to connectors or media circuits, and high-speed differential traces must preserve return-path continuity. Before committing, verify whether the system uses TX/T4 signaling, confirm termination and isolation requirements, and compare the controller's availability with current procurement channels.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para DP83858VF — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto |
|---|---|
| Package | 132-PQFP (24.13 mm x 24.13 mm) |
| Brand | Texas Instruments |
| Controller Type | Ethernet repeater interface controller |
| Data Rate | 100 Mb/s |
| Supported Port Count | Up to 8 ports |
| Supply Voltage | 4.75 V to 5.25 V |
| Supply Current | 295 mA |
| Interface Standard | IEEE 802.3 repeater clause 27 |
| Architecture | 100 Mb/s TX/T4 |
Principais diferenciais
- Dedicated eight-port repeater-controller architecture (vs General-purpose Ethernet interface controllers)
- Legacy IEEE 802.3 repeater focus (vs Modern multi-gigabit Ethernet controllers)
- Single-supply operating window (vs Controllers requiring multiple external rails)
- High pin count for multiport connectivity (vs Compact single-port PHY packages)
Notas de projeto
Design the supply around the verified 4.75 V to 5.25 V operating range and the 295 mA supply-current specification. Place local high-frequency decoupling close to the device's supply and ground pins, and verify startup behavior with the external media circuits connected. The supplied data does not provide maximum supply current, transient limits, or recommended capacitor values, so those values must be taken from the complete manufacturer datasheet before layout release.
Treat every Ethernet channel as a controlled-impedance, high-speed signal path. Route differential pairs over continuous reference planes, avoid splits and unnecessary stubs, and keep return paths available beneath the traces. The supplied snippet does not provide rise-time, impedance, termination, or maximum trace-length values, so these constraints must be obtained from the official DP83858VF documentation and the selected magnetic or transceiver components.
The 132-PQFP footprint has a large number of port and control connections. Plan fanout and via placement before routing high-speed pairs, maintain consistent spacing across each differential pair, and separate noisy power returns from signal references where practical. The supplied data confirms a 24.13 mm by 24.13 mm package but does not include the official land pattern or exposed-pad details; verify those against the manufacturer package drawing.
Informações de conformidade
The supplied data does not explicitly state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is marked not_applicable because no automotive qualification evidence was supplied; this is not an automotive qualification claim.
