VSC8664EV - 4-Port Gigabit Ethernet PHY | Microchip Technology
部品番号: VSC8664EV ✓ 生産中VSC8664EV 概要
A Gigabit Ethernet physical-layer transceiver, or PHY, is the semiconductor layer that converts logical data into electrical or optical signaling for a high-speed Ethernet link. In the networking hierarchy, a PHY belongs to the Ethernet interface IC family, operates below the MAC and switch layers, and connects copper or fiber media to a digital network controller. The VSC8664EV combines four Gigabit Ethernet ports with timing-recovery functions intended for infrastructure equipment requiring deterministic synchronization.
The principal verified feature is the pair of recovered-clock outputs. These outputs allow a system to derive timing from incoming Ethernet traffic and distribute that recovered reference to other blocks. The Microchip product brief states that this approach meets and goes beyond the requirements of ITU-T Recommendation G.8261/Y.1361. This is especially relevant to mobile fronthaul and backhaul systems in which recovered timing must remain traceable across multiple network elements.
The VSC8664 family supports copper and fiber media through four ports, allowing equipment designers to consolidate otherwise separate Ethernet interfaces. Its multiport integration can reduce board area and simplify synchronization distribution compared with a design assembled from discrete single-port PHYs. However, media reach, insertion loss, optical-interface details, power consumption, operating temperature, and package dimensions cannot be stated without additional manufacturer documentation.
Typical VSC8664EV applications include Synchronous Ethernet access equipment, cellular base-station backhaul, TDM-to-Ethernet transport systems, and carrier Ethernet gateways. In these systems, the four integrated ports can connect multiple network interfaces while the two recovered clocks provide timing references to aggregation, switching, or line-card electronics. Copper and fiber support can also reduce adapter complexity when equipment must accommodate different deployment media.
The primary design consideration is timing integrity. Engineers should preserve the recovered-clock routing specified by the manufacturer and account for clock jitter, isolation, trace impedance, and return paths on the PCB. Supply rails and optical or copper channel implementations must follow the complete datasheet because detailed schematic, capacitor, layout, and power-sequence requirements are not present in the verified source set supplied for this record.
This product record combines verified manufacturer capabilities, distributor availability information, pricing-status disclosures, interface-classification context, and engineering-oriented application analysis. It also distinguishes confirmed parameters from missing data, allowing procurement and hardware teams to evaluate the VSC8664EV without mistaking an unverified package, pinout, or electrical limit for a guaranteed specification.
ドロップイン代替品: VSC8664EV — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
この製品に利用可能なドロップイン代替品はありません。
代替品をリクエストVSC8664EV 仕様
| Product Type | 4-port Gigabit Ethernet copper/fiber PHY |
| Ethernet Port Count | 4 ports |
| Nominal Ethernet Speed | 1 Gb/s per port |
| Copper Media Support | Supported |
| Fiber Media Support | Supported |
| Recovered Clock Output Count | 2 outputs |
| Synchronous Ethernet Support | SyncE |
| Timing Recommendation Support | ITU-T G.8261/Y.1361 |
| Intended Applications | TDM backhaul, cellular base stations, and Synchronous Ethernet equipment |
| Operating Temperature Grade | Industrial temperature |
VSC8664EV standard ピン配置ガイド
VSC8664EV (standard パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: VSC8664EV.
詳細は データシート をご参照ください。
主な用途
VSC8664EV の用途: 6 件s: Cellular Base-Station Backhaul, TDM-to-Ethernet Transport Equipment, Carrier Ethernet Access Equipment, Synchronous Ethernet Line Cards, Copper-and-Fiber Network Gateways, Timing-Distribution Network Equipment.
Cellular Base-Station Backhaul
The VSC8664EV fits cellular base-station backhaul equipment that needs multiple Gigabit Ethernet links plus recoverable network timing. Its four ports support copper and fiber media, while the two recovered-clock outputs can provide timing references to line-card, transport, or aggregation circuitry. This combination addresses the traceable timing challenge identified in the Microchip product brief for cellular base-station and TDM backhaul systems. Because the recovered-clock implementation details are not included in the supplied excerpts, the final design must follow the complete clock-output configuration, jitter limits, isolation rules, and layout guidance from Microchip.
おすすめ
TDM-to-Ethernet Transport Equipment
The VSC8664EV is suited to transport equipment that carries TDM services over packetized Ethernet and requires a traceable synchronization reference. Four Gigabit Ethernet ports can serve several network-facing or line-side interfaces, and the dual recovered-clock outputs provide two timing outputs derived from received traffic. This supports equipment designers addressing the timing-distribution problem described by Microchip for TDM backhaul links. The exact mapping of recovered clocks to functional blocks, allowable clock frequencies, and required termination components remain unverified and must be established from the complete manufacturer documentation before PCB implementation.
おすすめ
Carrier Ethernet Access Equipment
Carrier Ethernet access equipment can use the VSC8664EV to combine four Gigabit Ethernet service interfaces with Synchronous Ethernet timing recovery. Copper and fiber media support lets one PHY family address different access-network media, while the two recovered clocks support timing distribution within a line card or access platform. The part's verified relevance to traceable timing across backhaul links makes it particularly applicable where synchronization quality must be maintained between network elements. Designers must still verify line-rate behavior, media reach, power integrity, and exact copper and fiber implementation details against the complete VSC8664 family documentation.
おすすめ
Synchronous Ethernet Line Cards
The VSC8664EV is appropriate for modular Synchronous Ethernet line cards requiring several network ports and centralized timing distribution. Four Gigabit Ethernet ports can reduce the number of separate interface devices needed on a card, while the dual recovered-clock outputs provide references for switching, aggregation, or transport blocks. The recovered timing must remain traceable across the equipment, which is the specific challenge addressed by the VSC8664 family. Clock jitter, isolation, return-path discipline, and the relationship between each recovered output and the supported network channels should be confirmed from Microchip's complete design documentation.
おすすめ
Copper-and-Fiber Network Gateways
The VSC8664EV can support gateway equipment that must terminate both copper and fiber Gigabit Ethernet media. Four integrated ports simplify multi-interface gateway designs, and the two recovered-clock outputs provide synchronization references for connected transport or aggregation circuitry. This is useful where one platform must bridge different access media while maintaining traceable timing through the network. The verified data does not state the supported media combinations for each port or optical wavelengths, so interface selection must follow the package-specific ordering information and complete datasheet rather than assuming that every port supports every media mode simultaneously.
おすすめ
Timing-Distribution Network Equipment
The VSC8664EV fits network equipment in which a recovered Ethernet clock must be distributed to multiple internal subsystems. Its two recovered-clock outputs provide separate timing references, while the four-port PHY integrates several Gigabit Ethernet connections into one device. This arrangement can simplify board partitioning compared with a design using separate synchronization and interface components. The engineering benefit depends on preserving clock quality throughout the PCB and correctly handling every supported recovered-clock output configuration. Use controlled impedance, suitable return paths, and the manufacturer's isolation guidance, since detailed routing constraints are not present in the supplied product excerpts.
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おすすめ製品の概要
エンジニアリング参考データ: VSC8664EV — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 |
|---|---|
| Brand | Microchip Technology |
| Ethernet Port Count | 4 ports |
| Nominal Ethernet Speed | 1 Gb/s per port |
| Copper Media Support | Supported |
| Fiber Media Support | Supported |
| Recovered Clock Outputs | 2 outputs |
| Synchronous Ethernet Support | SyncE |
| Timing Recommendation | ITU-T G.8261/Y.1361 |
| Operating Temperature Grade | Industrial temperature |
主な差別化要因
- Four-port integration （vs Single-port Gigabit Ethernet PHYs)
- Dual recovered-clock outputs （vs PHYs without recovered-clock outputs)
- Synchronous Ethernet timing focus （vs Non-timing-aware Gigabit Ethernet PHYs)
- Copper and fiber media coverage （vs Copper-only Gigabit Ethernet PHYs)
設計ノート
Treat both recovered-clock outputs as precision timing signals rather than ordinary digital outputs. Use the complete Microchip layout guidance to determine trace geometry, impedance, isolation, return paths, and any required termination. Keep recovered-clock routing away from switching-power nodes and high-slew-width digital interfaces. The supplied excerpts confirm two outputs and SyncE timing support but do not provide frequency, jitter, or output-loading limits, so those values must be obtained before release.
Separate copper and fiber interface regions according to the manufacturer's reference layout, and provide a continuous ground reference beneath high-speed copper links and clock routes. Keep media-line connector transient paths away from recovered clocks and sensitive PHY circuitry. Because the exact package and pinout are not included in the verified excerpts, do not release the board outline or connector escape geometry until the ordering-specific package drawing and recommended layout have been obtained.
Calculate the power budget from the confirmed supply rails, port configuration, and media implementation rather than from the generic four-port description. Verify startup sequencing, local decoupling, and copper or fiber transceiver requirements using the complete manufacturer schematic and bill of materials. No supply-voltage or power-consumption values were present in the supplied sources, making a numerical thermal or power-integrity design invalid at this stage.
Do not treat a search-tool similarity result as proof of drop-in compatibility. A replacement must match the exact package, pin functions, clock behavior, copper/fiber channel implementation, electrical ratings, and thermal requirements. In particular, VSC8664-family products with different ordering codes must not be assumed to be interchangeable. Confirm the package drawing, exposed-pad requirements, and recovered-clock configuration for every proposed substitution.
コンプライアンス情報
The supplied verified excerpts do not provide package-specific environmental or regulatory declarations. ITU-T Recommendation G.8261/Y.1361 is a timing recommendation referenced by the manufacturer product brief, not a product compliance declaration. Obtain the current Microchip declarations for the exact ordering code before regulated deployment.
