VSC8490YJU-17P Dual-Port 10GbE PHY | Microchip
Teilenummer: VSC8490YJU-17P ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $95.47 | $95,47 |
| 10 | $86.2 | $862,00 |
| 100 | $72.5 | $7.250,00 |
| 500 | $62.1 | $31.050,00 |
| 1.000 | $54.8 | $54.800,00 |
VSC8490YJU-17P Übersicht
What is a 10GbE PHY? A PHY (Physical Layer device) is the lowest layer of the OSI networking stack. It converts digital MAC-layer data into analog signals suited to copper traces, direct-attach cables, or optical modules. The VSC8490YJU-17P belongs to the SERDES / Ethernet PHY / telecom interface IC family within Microchip's networking portfolio, sitting beneath the MAC and above the physical medium. Modern 10GBASE-R PHYs also integrate MACsec encryption and IEEE 1588 timestamping, which is why the VSC8490 is described as an XFI-to-(R)XAUI MACsec/1588 dual-port transceiver rather than as a plain PHY.
Key features of the VSC8490YJU-17P include dual 10G lanes, integrated MACsec, 1588v1/v2 hardware timestamping, SFI/XFI host-side interface, (R)XAUI backplane support, SFP+ SerDes with adaptive equalization, and EDC (Electronic Dispersion Compensation) for KR-style backplane operation. Core supply voltages are 1.0V and 1.2V as documented on the Arrow listing, and the device uses an SPI management interface for register access.
The VSC8490 architecture is built around independent per-lane SerDes cores with adaptive equalization, a 1588 timestamp engine, and a MACsec engine using AES-GCM-128 with support for 16+ SA contexts. Internal firmware-configurable equalization allows the same silicon to be tuned for short-reach copper and long-reach optical modules, simplifying SKU management across host-card designs. The MACsec block offloads per-packet encryption from the host CPU/ASIC, which is essential for backplane and metro Ethernet platforms where line-rate 10G encryption cannot burden the main processor.
Typical applications for the VSC8490YJU-17P include 10G Ethernet switches and routers, OTN/WDM transport equipment, optical transport platforms with MACsec-secured links, top-of-rack and carrier-grade switches, and high-speed backplane line cards in routers and base stations. It is also used in SFP+ media-converter modules and 10G-to-fiber test gear.
When designing with this device, pay close attention to the 196-ball FCBGA power-delivery network (1.0V/1.2V) and follow Microchip reference-design stack-up and decoupling guidance. Use SPI only for register access during bring-up; production traffic uses the host-side XFI/SFI SerDes to a back-end switch ASIC, so PCB layout of those high-speed lanes dominates signal-integrity margin.
This page synthesizes XAIPART distributor-tier pricing, application-specific design guidance, and drop-in same-family alternatives for the VSC8490YJU-17P that you will not find in the standalone manufacturer datasheet.
Drop-in-Alternativen für VSC8490YJU-17P – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit VSC8490YJU-17P (gleiche Bauform und Footprint) – abweichend in Function, RoHS Status.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
VSC8490YJU-17
✅ Drop-In✓ Auf Lager
$65.8 / Stück
Datenblatt ansehen →VSC8491YJU-17
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
VSC8489YJU-17
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
VSC8490YJU-17P-TR
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
VSC8490YJU-18
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
VSC8490YJU-17P Technische Daten
| Product Type | Dual-Port 10GbE PHY Transceiver |
| Funktion | Ethernet PHY / Telecom Interface |
| Number of Ports | 2 |
| Datenrate | 1 Gbps / 10 Gbps per port |
| Host-Side Interface | XFI / SFI / (R)XAUI |
| Line-Side Interface | SFI / SFP+ / 10GBASE-R |
| MACsec Support | Yes (IEEE 802.1AE, AES-GCM) |
| 1588 Timestamp Support | Yes (IEEE 1588v1/v2) |
| EDC Support | Electronic Dispersion Compensation for backplane |
| Management Interface | SPI |
| Core Supply Voltages | 1.0 V, 1.2 V |
| Gehäuse | 196-FCBGA (15x15 mm) |
| Montageart | Surface Mount |
| RoHS-Status | Compliant |
VSC8490YJU-17P 196-fcbga (15x15 mm) Pinbelegungsleitfaden
Pinbelegung für VSC8490YJU-17P (196-fcbga (15x15 mm)-Gehäuse). Pin-Nummerierung, Funktionen und Anschlussdiagramme sind im Herstellerdatenblatt definiert. Entnehmen Sie diesem den genauen Footprint und Lötrichtlinien.
Keine detaillierten Pinbelegungsdaten verfügbar für VSC8490YJU-17P.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
VSC8490YJU-17P ist geeignet für 6 Anwendungs: 10G Ethernet Switch Line Card, OTN/WDM Transport Equipment, Top-of-Rack Carrier-Grade Switch, MACsec-Encrypted Backplane Line Card, 10G-to-Fiber Media Converter / Test Equipment, 5G Mobile Backhaul Aggregation Router.
10G Ethernet Switch Line Card
Sits between a switch ASIC and SFP+ cages, providing per-port 10G SerDes, MACsec encryption, and 1588 timestamping. The dual-port configuration allows high port density on a single line card, while the integrated MACsec engine performs line-rate AES-GCM-128 encryption without burdening the switch CPU. The 196-FCBGA package supports BGA assembly typical of high-density telecom line cards, and the 1.0V/1.2V supplies are compatible with standard switch ASIC power rails.
Empfohlen
OTN/WDM Transport Equipment
Provides the PHY layer between an OTN framer ASIC and a long-haul optical transceiver (SFP+ ER/ZR). The EDC (Electronic Dispersion Compensation) feature corrects signal degradation across the backplane and short optical runs, while 1588 hardware timestamping carries synchronization information alongside OTN payload. The XFI/SFI host interface connects directly to standard OTN framer chipsets, making the PHY a turnkey 10G building block for OTN multiplexer and transponder cards.
Empfohlen
Top-of-Rack Carrier-Grade Switch
Interfaces a switching ASIC to 10G SFP+ uplinks in a ToR (Top-of-Rack) switch for carrier-grade networks. The integrated MACsec provides hardware-accelerated link security between aggregation switches, and the 1588 engine enables precise timing distribution for mobile backhaul and telecom services. Dual-port density reduces PCB area per switch port, while the FCBGA-15x15 package supports high-density BGA layouts typical of 48+ port switches.
Empfohlen
MACsec-Encrypted Backplane Line Card
Carries 10G traffic across a chassis backplane with hardware MACsec encryption between line cards, eliminating CPU overhead for bulk link encryption. The (R)XAUI mode maps cleanly to backplane trace lengths up to 40 inches, and the per-packet timestamp capability records latency across the chassis. The combination of MACsec + 1588 + EDC makes the VSC8490YJU-17P a single-chip solution for secure, timing-aware backplane fabric in modular routers and ATCA platforms.
Empfohlen
10G-to-Fiber Media Converter / Test Equipment
Acts as the bridge PHY in standalone 10G media converters and lab test gear, translating between XFI electrical and SFP+ optical interfaces. The integrated 1588 timestamping is invaluable for network analyzer and PTP test equipment, where timestamping accuracy drives product differentiation. The FCBGA package and dual-port density allow compact portable media converters with two 10G ports plus management channels in a small-form-factor design.
Empfohlen
5G Mobile Backhaul Aggregation Router
Provides 10G uplinks with hardware 1588 timestamp generation, enabling precise timing distribution required for 5G fronthaul/backhaul networks where sub-microsecond sync is mandatory. The MACsec engine secures backhaul traffic between aggregation routers, and the XFI/SFI host interface connects to standard 5G baseband or router ASICs. Dual-port density suits the high uplink count in mobile backhaul aggregation tiers, and the industrial-grade FCBGA package supports long-life carrier deployment.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für VSC8490YJU-17P – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | VSC8490YJU-17 | VSC8491YJU-17 | VSC8489YJU-17 |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 196-FCBGA (15x15) | 196-FCBGA (15x15) - same | 196-FCBGA (15x15) - same | 196-FCBGA (15x15) - same |
| Number of Ports | 2 | 2 | 2 | 1 (single-port) |
| Data Rate per Port | 1 Gbps / 10 Gbps | 1 Gbps / 10 Gbps | 1 Gbps / 10 Gbps | 1 Gbps / 10 Gbps |
| Host-Side Interface | XFI / SFI / (R)XAUI | XFI / SFI / (R)XAUI | XFI / SFI / (R)XAUI | XFI / SFI / (R)XAUI |
| Line-Side Interface | SFI / SFP+ | SFI / SFP+ | SFI / SFP+ | SFI / SFP+ |
| MACsec Support | Yes (IEEE 802.1AE) | Yes (IEEE 802.1AE) | Yes (IEEE 802.1AE) | Yes (IEEE 802.1AE) |
| 1588 Timestamping | Yes (IEEE 1588v1/v2) | Yes (IEEE 1588v1/v2) | Yes (IEEE 1588v1/v2) | Yes (IEEE 1588v1/v2) |
| Core Supply Voltages | 1.0 V, 1.2 V | 1.0 V, 1.2 V | 1.0 V, 1.2 V | 1.0 V, 1.2 V |
| Lifecycle Status | Active | Active | Active | Active |
Wichtigste Unterscheidungsmerkmale
- Dual-port density in same FCBGA-196 footprint as single-port sibling (vs. VSC8489YJU-17)
- Integrated 1588v1/v2 hardware timestamping at line rate (vs. VSC8489YJU-17)
- Drop-in firmware-compatible alternative in same family (vs. VSC8491YJU-17)
Designhinweise
The 196-FCBGA (15x15 mm) package requires microvia build-up PCB technology; through-hole vias on the inner stripline layers are not acceptable for the 10G SerDes lanes. Route host-side XFI/SFI pairs and line-side SFI pairs on stripline with continuous reference ground planes, keeping within 150 um differential pair pitch and 100 ohm differential impedance. Stitch EPAD via array to inner ground and power planes every 2-3 mm to provide low-impedance return paths and thermal dissipation.
Estimated: at typical dual-port 10G traffic load, total chip power consumption is approximately 3.5-4.5 W (rail-power breakdown in datasheet). The 1.0V and 1.2V rails each need to deliver up to 2A peak; use a buck regulator with at least 4A capability (e.g. TPS54560QDDAQ1 or TPS544C20RVF) and place decoupling capacitors as close to the BGA balls as possible - 1x 22 uF bulk + 4x 0.1 uF high-frequency ceramic per VDD rail. A ferrite bead on each digital rail reduces noise back into the analog supplies.
For (R)XAUI backplane operation, enable EDC (Electronic Dispersion Compensation) in the host-side SerDes equalizer registers per the Microchip reference design. Adaptive equalization should be allowed to converge during link training; do not freeze the equalizer coefficients prematurely. For SFP+ optical modules, disable EDC on the line-side SerDes to avoid overcompensation and watch the host-side pre-emphasis taps. Reference the Microchip VSC8490 reference design guide (see product page) for board stack-up and via tuning recommendations.
Do not confuse the VSC8490 (dual-port) with the VSC8489 (single-port) - they share the same 196-FCBGA footprint but use different firmware binaries loaded via SPI at boot. Loading the wrong firmware leaves one port electrically dead with a host-side alarm. Always verify SPI bootloader access during bring-up and confirm the part's device-ID register reads back the expected JEDEC ID before programming PHY firmware.
Compliance-Informationen
RoHS and lead-free status per Microchip product page reachability; REACH and halogen-free status not explicitly stated in the provided data.
