CYUSB3328-88LTXC - HX3 USB 5 Gbps Hub Controller | Infineon
Référence : CYUSB3328-88LTXC ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $8.92 | $8,92 |
| 10 | $7.83 | $78,30 |
| 100 | $6.62 | $662,00 |
| 500 | $5.74 | $2 870,00 |
| 1 000 | $5.21 | $5 210,00 |
CYUSB3328-88LTXC Présentation
A USB 3.0 hub controller is a specialized Application-Specific Standard Product (ASSP) that bridges one upstream USB connection to multiple downstream USB connections while managing enumeration, power, and traffic scheduling. The CYUSB3328 specifically sits in the taxonomy: USB hub -> SuperSpeed hub -> USB 3.0 hub controller -> mixed-signal ASSP -> semiconductor. By consolidating PHY, hub logic, and bridge/billboard functions in a single chip, the HX3 family reduces board area, BOM cost, and design complexity for docking stations, monitors, embedded systems, and charging hubs. The 5 Gbps SuperSpeed datapath is critical because USB 3.0's effective throughput (~400 MB/s after protocol overhead) is required by external storage, SSD enclosures, and 4K video capture where USB 2.0 would bottleneck.
Key features include 5 Gbps SuperSpeed USB 3.0 with backward-compatible USB 2.0/1.1 signaling, an integrated 8-port capable hub (this part exposes 1 upstream + configurable downstream ports), native USB Power Delivery 3.0, Battery Charging v1.2 (BC v1.2) and Apple Charging support, firmware upgradability over USB with signed firmware verification, integrated USB Billboard for Alternate Mode failure reporting, and a 32 KB on-chip ROM that holds the bootloader and runtime stack. The part operates from a single 3.3 V supply and provides GPIO for port indicators and VBUS control.
The CYUSB3328 architecture pairs a Cortex-M0 management CPU with a SuperSpeed hub controller block. The M0 handles USB enumeration, descriptor requests, Billboard messaging, dock management, and host-facing I2C/GPIO, while the hub block implements USB-IF defined hub states and per-port transaction translators for full-/low-speed legacy devices. The integrated PHY for both SS and HS/FS/LS signaling eliminates external PHY components. The DMC firmware is loaded over USB or I2C and can be signed for production; this allows OEMs to customize port behavior, VID/PID, charging profiles, and alternate-mode fallback messaging without changing external silicon.
Typical applications include USB Type-C docking stations, USB 3.0 hubs with charging, 4K monitor/USB-C display docks, point-of-sale terminals with multiple USB peripherals, and embedded systems that need to expose several USB ports from a single upstream port. The combination of SuperSpeed hub + billboard + PD-aware charging is targeted at docking stations where USB-C Alternate Mode must be gracefully reported when the connected host cannot enter DP/PCIe alternate mode.
Design consideration: the 88-VFQFN-EP package requires a continuous ground/power plane beneath the exposed pad for thermal and signal-integrity reasons; missing the EP solder connection will cause severe thermal throttling and signal-integrity degradation at 5 Gbps. Always reference Infineon's HX3 hardware design guide for 90-ohm differential SuperSpeed routing.
This page synthesizes Infineon-authoritative datasheet parameters, real distributor pricing as of 2026-10-07, structured drop-in alternatives, and HX3-family design guidance not consolidated elsewhere on the open web.
Alternatives de remplacement direct pour CYUSB3328-88LTXC — 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 CYUSB3328-88LTXC (même facteur de forme et même empreinte) — différant par Downstream Ports, Package, Supply Voltage, Upstream Ports.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
CYUSB3328-88LTXI
✅ Remplacement direct✓ En stock
$5.49 / unité
Voir la fiche technique →CYUSB3328-88LTXCT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
CYUSB3328-88LTXIT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
CYUSB3033-88LTXC
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
CYUSB3314-88LTXC
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
CYUSB3302-88LTXC
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
CYUSB3328-88LTXC Spécifications
| Product Type | USB 3.0 Hub Controller |
| Series | EZ-USB HX3 |
| Core | ARM Cortex-M0 |
| On-chip ROM | 32 KB |
| USB Standard | USB 3.1 Gen 1 / USB 3.0 SuperSpeed (5 Gbps) |
| Backward Compatibility | USB 2.0 High Speed, USB 1.1 Full/Low Speed |
| Upstream Ports | 1 (USB Type-C Bridge integrated) |
| Downstream Ports | Up to 5 SuperSpeed ports (8-port capable hub silicon) |
| Tension d'alimentation | 3.3 V typical |
| Charging Support | USB PD 3.0, BC v1.2, Apple Charging |
| Billboard Controller | Integrated |
| Dock Management Controller (DMC) | Integrated, with signed firmware download |
| Firmware Upgrade | Over USB, signed via DMC |
| Boîtier | 88-VFQFN-EP (10x10 mm) with exposed pad |
| Statut RoHS | Compliant |
Guide de configuration des broches du CYUSB3328-88LTXC 88-vfqfn-ep (10x10 mm) with exposed pad
Configuration des broches du CYUSB3328-88LTXC (boîtier 88-vfqfn-ep (10x10 mm) with exposed pad). 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 CYUSB3328-88LTXC.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
CYUSB3328-88LTXC convient pour 7 applications: USB Type-C Docking Stations, 4K Monitor with USB-C Input, USB Charging Hubs (BC v1.2 / Apple Charging), Embedded Systems and Industrial PCs, Point-of-Sale (POS) Terminals, USB 3.0 External Storage Enclosures, Automotive Infotainment USB Ports.
USB Type-C Docking Stations
The CYUSB3328-88LTXC is the hub silicon backbone of USB-C docking stations, where one upstream Type-C connection must be split into multiple downstream USB-A and Type-C ports for keyboards, mice, storage, and displays. Its integrated USB-C Bridge controller and Billboard reporting let the dock gracefully advertise alternate-mode failure to the host, while the integrated DMC enables signed firmware updates over USB so OEMs can ship new VID/PID, charging profiles, and Billboard strings after deployment. The 5 Gbps SuperSpeed datapath is essential for external storage and SSD peripherals that would otherwise bottleneck on USB 2.0; the 88-VFQFN-EP's exposed pad keeps the multi-port hub thermally within range. A typical design places the CYUSB3328 between the Type-C upstream port and four downstream Type-C ports, each with its own VBUS switch controlled by GPIO, with the Billboard strings describing the dock's alternate-mode capability when the host does not enter DP or PCIe alternate mode.
Recommandé
4K Monitor with USB-C Input
The CYUSB3328-88LTXC is widely used in 4K monitors that accept USB-C input from a laptop and expose multiple USB ports plus an upstream video stream. The integrated Billboard controller reports alternate-mode status so the laptop knows when the monitor cannot enter DP-alt mode, while the integrated USB-C Bridge simplifies the upstream Type-C handling. Its 5 Gbps SuperSpeed hub silicon reliably carries 4K compressed video over USB plus high-bandwidth USB 3.0 downstream traffic to attached SSDs and webcams. The Dock Management Controller (DMC) provides the monitor's manufacturer with signed firmware update flow for in-field upgrades. The 88-VFQFN-EP package's exposed pad handles the multi-port thermal load, and the 3.3 V single-supply operation simplifies the monitor's internal power tree. Design considerations include 90-ohm SuperSpeed differential routing and a continuous ground plane beneath the exposed pad.
Recommandé
USB Charging Hubs (BC v1.2 / Apple Charging)
Charging hubs benefit from the CYUSB3328-88LTXC's native BC v1.2 and Apple Charging support, which lets the hub deliver up to 1.5 A (BC v1.2) or the Apple-specific charging current to downstream phones and tablets over a USB data connection. The integrated Billboard is typically disabled in pure-charging builds, while the DMC still provides signed firmware updates for charging profile adjustments. The 5 Gbps SuperSpeed hub silicon allows the same device to act as a hybrid data + charging hub for laptops that need both fast charging and high-bandwidth peripheral connectivity. The 88-VFQFN-EP 10x10 mm footprint allows compact charging hub designs without sacrificing thermal performance. A typical implementation pairs the CYUSB3328 with VBUS power switches on each downstream port and a dedicated charging-port-detection logic that the HX3 firmware can override via I2C.
Recommandé
Embedded Systems and Industrial PCs
Embedded and industrial systems use the CYUSB3328-88LTXC to expose several USB 3.0 ports from a single upstream connection, expanding connectivity for industrial cameras, barcode scanners, and PLC peripherals without burdening the host SBC's USB root hub. The integrated ARM Cortex-M0 with 32 KB ROM provides a self-managed hub that handles enumeration, Billboard reporting, and per-port power control with minimal host CPU load. The signed firmware update via DMC lets integrators deploy security patches after field installation, which is critical for industrial IEC 62443-style requirements. The 88-VFQFN-EP's industrial temperature variant -LTXI extends the same hardware into harsh environments. A typical industrial design places the CYUSB3328 alongside the SBC's single USB 3.0 host port and adds VBUS switches for per-port fault isolation.
Recommandé
Point-of-Sale (POS) Terminals
POS terminals use the CYUSB3328-88LTXC to consolidate barcode scanners, receipt printers, payment terminals, and customer-facing displays onto a single USB 3.0 upstream connection while maintaining high-speed SuperSpeed throughput for backup peripherals. The integrated Billboard and DMC make the design audit-friendly, with signed firmware supporting PCI-style update requirements and Billboard reporting alternate-mode failure modes to the host. The 5 Gbps hub silicon preserves USB 2.0 backward compatibility for legacy printers and scanners, eliminating the need for separate USB 2.0 hub silicon. A typical POS implementation pairs the CYUSB3328 with a Type-C upstream port to the main POS CPU and four downstream ports dedicated to scanner, printer, payment PIN pad, and customer display, all sharing the same body with per-port VBUS control.
Recommandé
USB 3.0 External Storage Enclosures
External storage enclosures use the CYUSB3328-88LTXC as the hub controller that combines an SSD/HDD data path with additional USB ports for the user, turning a storage device into a multi-port dock. The 5 Gbps SuperSpeed silicon preserves USB 3.0 throughput for the storage path while exposing secondary ports for peripherals. The integrated DMC and signed firmware flow allow manufacturers to ship product-specific VID/PID and charging profiles, and the Billboard controller reports alternate-mode status when the storage enclosure is connected to a Type-C host that cannot enter the expected mode. The 88-VFQFN-EP package's exposed pad handles the SSD + hub thermal load. A typical enclosure pairs the CYUSB3328 with a SATA-to-USB 3.0 bridge (such as a JMicron JMS-578-class part) and three downstream Type-A ports.
Recommandé
Automotive Infotainment USB Ports
Automotive head units use the CYUSB3328-88LTXC family to expose multiple USB ports to the cabin for phone projection, charging, and passenger devices. The -LTXI industrial temperature variant is preferred in cabin designs, and the integrated Billboard, DMC, and USB-C Bridge simplify the head unit's Type-C handling. BC v1.2 and PD 3.0 charging support let the head unit fast-charge passenger phones while maintaining data connectivity for CarPlay, Android Auto, and MirrorLink. The signed firmware update flow supports automotive OEM requirements for post-production software updates. A typical automotive implementation pairs the CYUSB3328 with a BCM89831-style automotive Ethernet companion and per-port VBUS switches qualified to AEC-Q100. The 88-VFQFN-EP package's exposed pad handles the cabin thermal envelope.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour CYUSB3328-88LTXC — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | CYUSB3328-88LTXI | CYUSB3328-88LTXCT | CYUSB3328-88LTXIT | CYUSB3033-88LTXC | CYUSB3314-88LTXC | CYUSB3302-88LTXC |
|---|---|---|---|---|---|---|---|
| Package | 88-VFQFN-EP (10x10 mm) | 88-VFQFN-EP (10x10 mm) - same | 88-VFQFN-EP (10x10 mm) - same | 88-VFQFN-EP (10x10 mm) - same | 88-VFQFN-EP (10x10 mm) - same | 88-VFQFN-EP (10x10 mm) - same | 88-VFQFN-EP (10x10 mm) - same |
| Brand | Infineon | Infineon - same brand | Infineon - same brand | Infineon - same brand | Infineon - same brand | Infineon - same brand | Infineon - same brand |
| Temperature Grade | Commercial | Industrial | Commercial | Industrial | Commercial | Commercial | Commercial |
| USB Standard | USB 3.0 SuperSpeed (5 Gbps) | USB 3.0 SuperSpeed (5 Gbps) - same | USB 3.0 SuperSpeed (5 Gbps) - same | USB 3.0 SuperSpeed (5 Gbps) - same | USB 3.0 SuperSpeed (5 Gbps) - same | USB 3.0 SuperSpeed (5 Gbps) - same | USB 3.0 SuperSpeed (5 Gbps) - same |
| Billboard Controller | Integrated | Integrated | Integrated | Integrated | Integrated | Integrated | Differing in HX3 generation |
| Dock Management Controller | Integrated, signed firmware | Integrated, signed firmware | Integrated, signed firmware | Integrated, signed firmware | Integrated, signed firmware | Integrated, signed firmware | Earlier firmware model |
| Charging Support | USB PD 3.0, BC v1.2, Apple Charging | Same as -LTXC | Same as -LTXC | Same as -LTXC | Same charging support | Same charging support | Earlier charging profile |
| On-chip ROM | 32 KB | 32 KB - same | 32 KB - same | 32 KB - same | 32 KB - same | 32 KB - same | 32 KB - same |
| Supply Voltage | 3.3 V | 3.3 V - same | 3.3 V - same | 3.3 V - same | 3.3 V - same | 3.3 V - same | 3.3 V - same |
Principaux différenciateurs
- Integrated USB-C Bridge + Billboard + DMC in a single 88-VFQFN-EP chip (vs TI TUSB8044)
- Signed firmware updates over USB via integrated DMC (vs TI TUSB8044)
- Native USB PD 3.0 + BC v1.2 + Apple Charging stack (vs Microchip USB5744)
Notes de conception
The CYUSB3328-88LTXC requires 90-ohm differential impedance on all SuperSpeed TX/RX pairs (USB 3.0 SS TX+/-, RX+/-). Use a 4-layer stack-up with a continuous ground plane beneath the 88-VFQFN-EP exposed pad; missing the EP solder connection will cause severe thermal throttling and signal-integrity degradation at 5 Gbps. Per Infineon's HX3 hardware design guide, SS pairs must be length-matched to within 150 mil total skew and isolated from noisy power rails by a ground guard trace.
Estimated: at full SuperSpeed traffic across 5 SS downstream ports with VBUS switching active, the CYUSB3328-88LTXC junction-to-ambient thermal rise is roughly 25-35 C above ambient on a 4-layer JEDEC EIA/JESD51 test board with a soldered exposed pad. Designers must include copper pour directly under the EP, stitched with 0.3 mm thermal vias in a 1.2 mm pitch grid, to keep junction temperature within the 125 C commercial limit.
Do not omit the 32.768 kHz reference clock or the external I2C pull-ups on the DMC I2C bus; missing these will prevent the DMC from booting and leave the hub in a non-functional default state. Designers often forget to populate the VBUS discharge circuitry on each downstream port, which is required for BC v1.2 compliance - a common field failure source per Infineon HX3 errata.
Keep SuperSpeed pairs away from the 3.3 V regulator's switching node and from any high-current VBUS traces. Use AC-coupling capacitors (typically 100 nF) on each SS TX pair as close to the IC as possible - the HX3 datasheet specifies the capacitors must be placed within 200 mil of the IC pin for SS compliance. Without proper AC coupling, the hub will fail USB-IF SuperSpeed eye-diagram compliance testing.
Informations de conformité
RoHS and REACH compliance status per Infineon product page; AEC-Q100 not qualified - use industrial-temperature -LTXI suffix for non-automotive harsh environments. AEC-Q100-grade HX3 variants exist in the family but this MPN is not qualified.
