VSC8664XIC - Quad 1.25Gbps Ethernet PHY | Microchip
Teilenummer: VSC8664XIC ✓ AktivVSC8664XIC Übersicht
An Ethernet PHY is an interface IC that converts digital data into signals suitable for transmission over copper or fiber media while receiving and recovering data from those media. The VSC8664XIC belongs to the PHY hierarchy within Ethernet interface ICs, where a physical-layer transceiver works alongside a MAC, switch, processor, and physical connector. Its four-channel architecture consolidates multiple copper and fiber links into one high-density network-interface device.
The primary feature set includes four 10/100/1000BASE-T ports, 100BASE-FX support, and dual recovered-clock outputs. According to the Microchip VSC8664 product page, the recovered clocks support carrier-quality Synchronous Ethernet, or SyncE. This feature is useful where network equipment must derive timing from the Ethernet physical layer for synchronous packet transport rather than relying exclusively on a separate asynchronous clock source.
Each channel supports a maximum serialization rate of 1.25 Gbps, allowing 1 Gbps Ethernet payload operation with line-rate encoding overhead. The quad-port organization makes the device suitable for multi-port edge equipment, access systems, industrial Ethernet switches, and network interface controllers requiring several copper links plus optical connectivity. A common package also simplifies board routing for multi-channel designs compared with several discrete PHY devices.
Typical applications include carrier Ethernet equipment, industrial network gateways, multi-port Ethernet controllers, telecommunications access hardware, and rack-mounted or embedded systems requiring 1 Gbps copper links with optional fiber backhaul. The 256-pin PBGA footprint is appropriate for multilayer PCB layouts where dense power, ground, high-speed signal, and control connectivity can be routed with short connections.
The principal design consideration is that this device is a high-pin-count mixed-signal and high-speed communications component. Its 256-pin PBGA requires careful layer-stack selection, via-in-pad or via-array construction, local power-plane distribution, and strict impedance control for each high-speed copper interface. Differential pairs should be routed as controlled-impedance nets, with return paths kept continuous and noisy digital or switching circuitry separated from PHY clock and analog domains.
This page combines the manufacturer’s functional description, exact orderable package information, temperature range, source listings, and practical PCB guidance into a design-oriented reference for engineers evaluating the VSC8664XIC. It also distinguishes the available same-family hardware option from unverified cross-brand substitutes, helping procurement teams avoid assuming that similar Ethernet PHYs are drop-in replacements.
Drop-in-Alternativen für VSC8664XIC – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
VSC8664XIC-03
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
VSC8664XIC Technische Daten
| Product Type | Quad-port Ethernet physical-layer transceiver (PHY) |
| Supported Ethernet Rates | 10 Mbps, 100 Mbps, and 1 Gbps |
| Copper Interface | 10/100/1000BASE-T |
| Fiber Interface | 100BASE-FX |
| Port Count | 4 ports |
| Maximum Serialization Rate | 1.25 Gbps per port |
| Recovered Clock Outputs | 2 outputs |
| Synchronous Ethernet Support | SyncE |
| Gehäuse | 256-pin PBGA, 17 mm × 17 mm |
| Package Type | Tray |
| Betriebstemperatur | 0°C to +70°C |
| Country of Origin | Philippines or Taiwan |
| Ethernet Media | Twisted-pair copper and 100BASE-FX fiber |
| Supply Configuration | Full tray and partial tray |
| Manufacturer | Microchip Technology |
VSC8664XIC tray Pinbelegungsleitfaden
Pinbelegung für VSC8664XIC (tray-Gehäuse). Pin-Nummerierung, Funktionen und Anschlussdiagramme sind im Herstellerdatenblatt definiert. Entnehmen Sie diesem den genauen Footprint und Lötrichtlinien.
Keine detaillierten Pinbelegungsdaten verfügbar für VSC8664XIC.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
VSC8664XIC ist geeignet für 6 Anwendungs: Carrier Ethernet Access Equipment, Industrial Ethernet Gateway, Multi-Port Ethernet Controller, Synchronous Ethernet Timing Equipment, Telecommunications Access Terminal, Mixed-Media Network Interface.
Carrier Ethernet Access Equipment
The VSC8664XIC fits carrier Ethernet access equipment requiring several 1 Gbps copper ports and optional 100BASE-FX connectivity. Four integrated PHY channels reduce the number of discrete transceivers, while the dual recovered-clock outputs support carrier-quality Synchronous Ethernet timing. Its 1.25 Gbps-per-port serialization rate supports 1 Gbps line operation, and the 256-pin PBGA permits dense routing on a multilayer telecommunications PCB. Designers should reserve equal-length control paths, provide continuous reference planes, and validate channel loss and margin against the target copper and fiber media.
Empfohlen
Industrial Ethernet Gateway
The VSC8664XIC is suitable for industrial gateways that need multiple 10/100/1000BASE-T ports and a fiber uplink. The four-channel 1 Gbps PHY arrangement consolidates copper connectivity, while 100BASE-FX provides an alternative for longer links or network segmentation. The commercial 0°C to +70°C specification supports indoor industrial environments within that range. Implementation requires careful isolation of Ethernet and digital supply domains, controlled-impedance routing, and chassis-ground review so surge and common-mode requirements do not compromise signal integrity.
Empfohlen
Multi-Port Ethernet Controller
A multi-port Ethernet controller can use the VSC8664XIC to implement four copper physical-layer links without assigning a separate PHY package to every port. Support for 10, 100, and 1 Gbps rates allows the host interface to accommodate different endpoint capabilities, while 100BASE-FX adds mixed-media flexibility. The 256-pin PBGA is dense but appropriate for a multilayer controller board. Place each PHY channel’s high-speed and clock connections close to their ball groups, maintain uninterrupted ground references, and validate firmware register compatibility with the selected MAC and management architecture.
Empfohlen
Synchronous Ethernet Timing Equipment
The VSC8664XIC is appropriate for Synchronous Ethernet equipment that benefits from timing recovered directly from active Ethernet links. Microchip highlights its dual recovered-clock outputs as a means to support carrier-quality SyncE, allowing system timing to follow the network rather than depend entirely on an independent source. This can be useful in packet-transport, aggregation, and line-timing equipment. The implementation must preserve low-jitter clock distribution, provide clean reference-clock routing, separate clock and data returns, and confirm that the host consumes the recovered outputs according to the required SyncE profile.
Empfohlen
Telecommunications Access Terminal
The VSC8664XIC fits a telecommunications access terminal requiring four high-speed Ethernet physical interfaces with copper and fiber options. Quad-channel integration reduces board area and component-management overhead, while 1 Gbps operation supports modern service-aggregation links. Its 256-pin PBGA requires a multilayer PCB with short via paths for supply and ground distribution. Layout should pair each differential pair with a continuous reference plane, keep recovery-clock routes away from switching regulators, and provide independent filtering near the PHY where the reference design specifies magnetic-component or line-driver networks.
Empfohlen
Mixed-Media Network Interface
The VSC8664XIC supports mixed-media network interfaces by combining 10/100/1000BASE-T copper ports with 100BASE-FX capability. This flexibility is useful where one equipment platform must connect to copper endpoints in a control room while also offering fiber connectivity between cabinets, buildings, or upstream aggregation equipment. Four PHY channels reduce the need for separate media-conversion hardware. Engineering teams should verify fiber electrical expectations against the official datasheet, preserve correct line-impedance geometry, separate copper and fiber return paths where required, and test interoperability with the intended optical transceivers.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für VSC8664XIC – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | VSC8664XIC-03 |
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology |
| Package | 256-BGA (17 × 17 mm) | 256-BGA (17 × 17 mm) |
Wichtigste Unterscheidungsmerkmale
- Four integrated Ethernet PHY channels (vs. VSC8664XIC-03)
- Dual recovered-clock outputs for Synchronous Ethernet (vs. VSC8664XIC-03)
- Copper and fiber media in one high-density package (vs. VSC8664XIC-03)
Designhinweise
Route each 10/100/1000BASE-T differential pair as a controlled-impedance transmission line with a continuous reference plane. Keep the VSC8664XIC BGA escape paths short, use symmetric via structures where practical, and avoid splitting the ground reference beneath high-speed pairs. Because the package has 256 pins, a multilayer PCB is strongly favored to provide short power and ground connections while preserving layer-transition return paths.
Distribute the PHY’s supply and ground connections with dense local via arrays close to the relevant BGA balls. Separate the sensitive PHY supply filtering from high-current digital or switching loads, and keep magnetic-component or line-driver networks near their associated channel pins. The exact capacitor values and network arrangement should follow the manufacturer reference design because stability and conducted-noise performance depend on the complete power-network impedance.
Treat recovered clocks and reference clocks as high-speed signals. Route them away from Ethernet pairs where crossing is unavoidable, provide uninterrupted reference planes, and avoid introducing stubs. Validate clock jitter, differential impedance, insertion loss, return loss, and channel margin with the actual connector, magnetics or fiber components, PCB stack-up, and intended media. Simulation alone should be supplemented with hardware measurements because package and connector parasitics affect the final channel.
Do not treat the VSC8664XIC-03 order-code suffix as automatically interchangeable without checking the official ordering table and electrical specifications. Likewise, a 256-BGA device with the same dimensions is not automatically a drop-in replacement: ball functions, power sequencing, media support, management registers, reference clocks, and firmware may differ. Perform a complete pin, clock, electrical, and software compatibility review before approving any substitution.
Compliance-Informationen
The commercial operating-temperature range is 0°C to +70°C. No explicit RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification statement is present. AEC-Q100 is not applicable to the listed commercial-temperature configuration unless Microchip designates another order code.
