VSC8490YJU-17 - Dual-Port 10GbE PHY XFI/SFI to XAUI | Microchip
Référence : VSC8490YJU-17 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $95.47 | $95,47 |
| 10 | $88.2 | $882,00 |
| 100 | $78.5 | $7 850,00 |
| 500 | $71.4 | $35 700,00 |
| 1 000 | $65.8 | $65 800,00 |
VSC8490YJU-17 Présentation
What is a 10G Ethernet PHY/transceiver? A PHY (Physical Layer device) is the interface between the digital MAC layer and the analog serial electrical/optical medium. Transceivers like the VSC8490YJU-17 sit at the boundary of a line card or switch, performing serialization, clock-data recovery (CDR), and equalization. The VSC8490YJU-17 additionally integrates MACsec line-rate encryption and IEEE 1588 hardware timestamping, which makes it a "secure PHY" rather than a bare transceiver. It belongs to the product-type hierarchy: PHY -> Ethernet transceiver -> 10G Ethernet -> networking IC -> semiconductor.
Key features include dual-port 10G operation, 1588 hardware timestamping for PTP/PTPv2, integrated MACsec encryption (IEEE 802.1AE with AES-128/256), SFP+ SR/LR/ER/ZR fiber support per SFF-8431, EDC (Electronic Dispersion Compensation) for backplane and direct-attach copper (DAC) cabling, KR-compatible adaptive equalization, and MDIO/I2C management interfaces. SPI management is supported for host configuration. The 15x15 mm FCBGA footprint allows routing of 10G SERDES traces while maintaining signal integrity.
Architecturally, the VSC8490YJU-17 uses Microchip's proven mixed-signal SERDES core with adaptive equalization, baseline-wander correction, and low-jitter PLL synthesis to meet IEEE 802.3ae 10GBASE-R compliance. Hardware latency for cut-through switching is deterministic, which makes MACsec and 1588 timestamping accurate enough for financial trading and telecom backhaul.
Typical applications include 10G Ethernet switches, optical transport platforms (OTN/WDM), router line cards, enterprise aggregation switches, data-center top-of-rack (ToR) and leaf-spine fabrics, and test-and-measurement equipment that needs 10G inline encryption. The device is well-suited for SFP+ SR/LR/ER/ZR optical modules and backplane Ethernet.
When designing with this part, take special care of the 196-ball FCBGA PCB breakout, controlled-impedance 100-ohm differential SERDES routing, and clean 1.0 V / 1.2 V power rails. Reference Microchip application note guidance for MACsec key-management integration and 1588 grandmaster configuration.
This page consolidates distributor pricing, drop-in alternative review, and practical design considerations not contained in the manufacturer datasheet.
Alternatives de remplacement direct pour VSC8490YJU-17 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec VSC8490YJU-17 (même facteur de forme et même empreinte) — différant par Function, RoHS Status.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
VSC8490YJU-13
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
VSC8490YJU-19
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
VSC8491YJU-17
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
VSC8489YJP-17
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
VSC8494YJU-17
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
VSC8490YJU-17 Spécifications
| Fonction | Dual-port 10GbE PHY (XFI/SFI to XAUI) |
| Number of Circuits | 2 |
| Débit de données | 1 Gbps / 10 Gbps per port |
| Host-side Interface | (R)XAUI per port |
| Line-side Interface | XFI / SFI per port |
| Protocol Support | IEEE 802.3ae 10GBASE-R, IEEE 802.1AE MACsec, IEEE 1588 |
| MACsec Encryption | AES-128 / AES-256 line-rate |
| 1588 Timestamping | Hardware PTPv1 / PTPv2 per IEEE 1588 |
| Fiber Support | SFP+ SR / LR / ER / ZR |
| Backplane Support | 10GBASE-KR with EDC and adaptive equalization |
| Tension d'alimentation | 1.0 V / 1.2 V |
| Supply Type | Single |
| Type de montage | Surface Mount |
| Boîtier | 196-FCBGA (15x15 mm) |
| Statut RoHS | Compliant (per Microchip product page) |
Guide de configuration des broches du VSC8490YJU-17 196-fcbga (15x15 mm)
Configuration des broches du VSC8490YJU-17 (boîtier 196-fcbga (15x15 mm)). La numérotation des broches, les fonctions et les schémas de connexion sont définis dans la fiche technique du fabricant. Consultez-la pour l'empreinte exacte et les directives de soudage.
Aucune donnée de brochage détaillée disponible pour VSC8490YJU-17.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
VSC8490YJU-17 convient pour 7 applications: 10G Ethernet Switch Line Cards, SFP+ Optical Module Host Cards, Electrical Backplane 10G Links, Telecom / OTN Transport Platforms, Data-Center Leaf-Spine Switches, Network Test & Measurement Equipment, Industrial & Defense Secure Networking.
10G Ethernet Switch Line Cards
The VSC8490YJU-17's dual 10G XAUI ports and integrated MACsec make it a strong fit for 10G aggregation switch line cards. The 196-FCBGA (15x15 mm) package places two 10G PHYs plus hardware AES-128/256 encryption on a compact footprint, helping OEM switch vendors reduce PCB area per port. Hardware 1588 timestamping enables PTP boundary-clock or transparent-clock operation across the switch without burdening the host CPU. Designers benefit from Microchip's reference line-card design files and MDIO-managed PHY integration, accelerating time to production. Compared to a discrete PHY plus external MACsec engine, the VSC8490YJU-17 lowers BOM cost and simplifies compliance with IEEE 802.1AE traffic-secrecy requirements.
Recommandé
SFP+ Optical Module Host Cards
Per Microchip's product family description, the VSC8490YJU-17 is "ideal for SFP+ host card applications" including SR, LR, ER, and ZR fiber modules. The on-chip EDC (Electronic Dispersion Compensation) supports long-reach and high-loss optical links while adaptive equalization handles direct-attach copper (DAC) cables. For host cards requiring 10GBASE-SR/LR throughput, two SFP+ cages can be driven from one VSC8490YJU-17, halving the PHY count and easing PCB routing. Integrated 1588 timestamping is critical for mobile fronthaul (e.g., CPRI/eCPRI) where nanosecond-accurate sync underlay traffic must be preserved.
Recommandé
Electrical Backplane 10G Links
The VSC8490YJU-17 supports 10GBASE-KR with adaptive equalization for backplane and direct-attach copper traces per the VSC8489/VSC8490/VSC8491 family datasheet. Its EDC core compensates for insertion-loss budgets up to long FR4 backplanes, allowing system designers to reuse existing backplane infrastructure at 10G speeds. The integrated MACsec engine provides line-rate encryption across the backplane, ideal for defense, financial-trading, and carrier networks where MAC-layer encryption is mandated. Two independent MACsec-secured backplane links per chip reduce the number of SERDES lanes the host ASIC must expose, simplifying ASIC-to-line-card interconnects.
Recommandé
Telecom / OTN Transport Platforms
Optical Transport Networks (OTN/OTU2/OTU4) depend on 10G client interfaces with strict latency budgets, and the VSC8490YJU-17's deterministic MACsec/1588 latency fits transport-platform requirements. The hardware IEEE 1588 timestamping aligns OTN client and line timing without consuming FPGA/ASIC MAC cycles, while MACsec protects the optical layer against tapping on shared fiber. The 15x15 FCBGA accommodates high-density 10G muxponder/ponder card designs. Reference designs typically pair the PHY with an OTN framer and a PTP grandmaster clock for full telecom-feature compliance.
Recommandé
Data-Center Leaf-Spine Switches
Modern data-center leaf-spine fabrics require 10G aggregation at low power per port, exactly the role the VSC8490YJU-17 fills. Each chip handles two 10G SFP+ ports with hardware encryption, and the 196-FCBGA allows dense layout on 1U/2U switches. Hardware MACsec enables zero-trust east-west traffic without burdening the host switch CPU, freeing CPU cycles for routing/switching workloads. IEEE 1588 hardware timestamping keeps the fabric synchronized for accurate telemetry, log correlation, and latency-sensitive financial workloads typical of modern DC environments.
Recommandé
Network Test & Measurement Equipment
Test-and-measurement equipment (network taps, packet generators, inline monitors) needs a transparent 10G PHY with hardware timestamping and per-packet encryption visibility, which the VSC8490YJU-17 provides. Engineers can intercept SFP+ fibers, decrypt MACsec traffic for analysis using the documented bypass modes, and apply 1588 timestamps to packet captures for accurate latency reporting. The dual-port density allows a single chip to monitor both directions of a full-duplex link. Low deterministic latency makes it suitable for inline network-emulation and impairment-emulation platforms.
Recommandé
Industrial & Defense Secure Networking
Industrial Ethernet and defense networks require deterministic 10G backbones with mandatory link-layer encryption; the VSC8490YJU-17 with -19 temperature grade supports industrial-grade operation. Hardware MACsec (IEEE 802.1AE) provides NIST-grade AES-128/256 encryption at line rate, while IEEE 1588 hardware timestamping delivers synchronized control across the network. The 196-FCBGA industrial footprint and -40C to +85C (extended) operation suit outdoor enclosures and ruggedized platforms. Long product life cycle and Microchip's extended temperature support simplify defense-program procurement.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour VSC8490YJU-17 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | VSC8490YJU-13 | VSC8490YJU-19 | VSC8491YJU-17 | VSC8489YJP-17 | VSC8494YJU-17 |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 196-FCBGA (15x15 mm) | 196-FCBGA (15x15 mm) - same | 196-FCBGA (15x15 mm) - same | 196-FCBGA (15x15 mm) - same | 196-FCBGA (15x15 mm) - same | 196-FCBGA (15x15 mm) - same |
| Number of 10G Ports | 2 | 2 | 2 | 1 | 1 | 2 |
| MACsec Encryption | AES-128 / AES-256 | Disabled | AES-128 / AES-256 | AES-128 / AES-256 | Reduced | AES-128 / AES-256 |
| 1588 Hardware Timestamping | Yes (PTPv1/v2) | Yes | Yes | Yes | Yes | Yes |
| Supply Voltage | 1.0 V / 1.2 V | 1.0 V / 1.2 V | 1.0 V / 1.2 V | 1.0 V / 1.2 V | 1.0 V / 1.2 V | 1.0 V / 1.2 V |
| Temperature Grade | Commercial (extended optional) | Commercial | Industrial (-40C to +85C) | Commercial | Commercial | Industrial |
Principaux différenciateurs
- Integrated hardware MACsec AES-128/256 (vs VSC8490YJU-13)
- Extended industrial temperature grade option (vs VSC8490YJU-17)
- Dual-port density vs single-port VSC8491 (vs VSC8491YJU-17)
Notes de conception
The 196-FCBGA (15x15 mm) package has a 1.0 mm or 1.27 mm ball pitch (verify against Microchip datasheet mechanical drawings). Use a high-density 6+ layer stack-up with low-loss dielectric (e.g. MEGTRON 6) to keep SERDES insertion loss within budget. Route each XFI/SFI lane as 100-ohm differential with matched length and continuous reference planes.
Place 0.1 uF and 1 uF X5R/X7R decoupling capacitors as close as possible to every power pin on the 196-ball FCBGA. Provide separate 1.0 V and 1.2 V planes with ferrite beads to isolate noisy digital sections from the SERDES PLL supply. Reference Microchip's hardware-design checklist for the recommended decoupling topology and bulk-cap placement.
Use AC-coupling capacitors (0.1 uF) on each SERDES lane output per IEEE 802.3ae. For 10GBASE-KR backplane links, follow the link-training (LT) and adaptive-equalization flow described in the VSC8490 family datasheet, including pre-emphasis and receiver-CTLE settings. Validate with a 3D-EM field solver or measured S-parameter sweeps.
Do not enable MACsec without first configuring the key-management interface; the -13 part variant disables MACsec. Estimated: confirm extended-grade availability (-19 suffix) and clock-input jitter before locking the schematic in for industrial designs. Ensure MDIO addresses are unique on the management bus to avoid conflicts with adjacent PHYs.
Estimated: at full dual-port 10G load with MACsec enabled, junction temperature can rise significantly. Use the FCBGA thermal pad with multiple thermal vias to a dedicated inner/outer ground plane. For industrial designs, use the -19 variant and derate per the datasheet theta-JA.
Informations de conformité
RoHS compliance per Microchip VSC8490 product page. REACH/halogen-free/conflict-minerals not explicitly disclosed in the verified distributor data; AEC-Q100 is not applicable as this is a telecom/datacom interface IC, not automotive-grade.
