USB2517-JZX - 7-Port USB 2.0 Hi-Speed Hub Controller | Microchip
N.º de pieza: USB2517-JZX ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $6.32 | $6,32 |
| 10 | $5.69 | $56,90 |
| 100 | $5.05 | $505,00 |
| 500 | $4.41 | $2.205,00 |
| 1.000 | $3.78 | $3.780,00 |
USB2517-JZX Descripción general
A USB hub controller is an Interface IC that aggregates multiple USB peripherals behind a single upstream port, presenting each downstream port to the host as an independent device while managing enumeration, power, and transaction translation. Within the broader system hierarchy, the USB2517-JZX sits at Interface IC → USB Controller → USB Hub Controller → USB 2.0 Hi-Speed Hub. Hub controllers are essential building blocks of docking stations, monitors, embedded industrial PCs, and consumer electronics that need to expand a single host USB root port into several usable downstream ports.
Key features include per-port or ganged power switching, individual port over-current sensing, integrated 1.5 kΩ upstream pull-up resistor, OTP/serial EEPROM configuration, and support for both bus-powered and self-powered hub topologies. The 64-QFN package with EP provides low thermal resistance and a small 9x9 mm PCB footprint. The device supports SMBus or I²C configuration, complies with USB Battery Charging Specification 1.1 pre-configurations, and integrates an internal 3.3V regulator requiring only a single 3.3V supply or a 5V VBUS-derived rail.
The architecture combines a USB 2.0 physical layer (PHY) and a serial interface engine (SIE) per port with a hub repeater and a MultiTRAK transaction translator. This allows multiple Full-/Low-Speed devices to communicate simultaneously with the host at full USB 2.0 bandwidth, eliminating the bandwidth bottleneck found in single-TT hub designs. The hub repeater handles connect/disconnect, suspend/resume, and reset signaling, while per-port PHYs provide signal integrity at 480 Mbps across PCB traces of typical lengths.
Typical applications include USB port expansion in monitors, docking stations, industrial PCs, embedded computing, and consumer hubs. It is also used in test equipment, automotive infotainment head units, and any product that must turn one host port into seven USB 2.0 ports. The 1.8V/3.3V flexible supply and small 9x9 mm QFN make it ideal for space-constrained embedded designs.
When designing with this part, ensure that the upstream port's 90 Ω differential pair is routed as a length-matched, impedance-controlled USB 2.0 microstrip with a continuous reference ground plane. Place the 480 MHz crystal or oscillator reference as close as possible to the XI pin, and decouple each VDD pin with a 0.1 µF X7R ceramic cap tied to a solid ground pour. A common pitfall is forgetting to populate the upstream series choke or ESD protection array; the hub will enumerate but fail USB-IF compliance without these.
This page synthesizes current distributor pricing, same-brand drop-in alternatives from the USB251x family, and practical design notes that go beyond the manufacturer datasheet to help engineers shorten time-to-prototype.
Alternativas directas para USB2517-JZX — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con USB2517-JZX (mismo factor de forma y huella) — difiere en Number of Downstream Ports, Package, Product Type, Supply Voltage, USB Specification.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
USB2517I-JZX-TR
✅ Sustitución directa✓ En stock
$2.5525 / unidad
Ver hoja de datos →USB2517-JZX-TR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
USB2517-JZX-AC0
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
USB2517I-JZX-CAG
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
USB2517-JZX Especificaciones
| Product Type | USB 2.0 Hi-Speed Hub Controller |
| Number of Downstream Ports | 7 |
| USB Specification | USB 2.0 (Hi-Speed, Full-Speed, Low-Speed) |
| Maximum Hi-Speed Data Rate | 480 Mbps |
| Maximum Full-Speed Data Rate | 12 Mbps |
| Maximum Low-Speed Data Rate | 1.5 Mbps |
| Transaction Translator | MultiTRAK (multi-TT) |
| Tensión de alimentación | 1.8 V / 3.3 V |
| Rango de temperatura de funcionamiento | -40 C to +85 C |
| Encapsulado | 64-pin QFN (9x9 mm) with EP |
| Tipo de montaje | Surface Mount |
| Configuration Interface | I2C / SMBus / OTP / EEPROM |
| Power Switching | Per-port or ganged |
| Over-Current Detection | Yes, per port |
| USB Battery Charging | BC 1.1 pre-configurations supported |
| Estado RoHS | Compliant |
Guía de configuración de pines de USB2517-JZX 64-pin qfn (9x9 mm) with ep
Configuración de pines para USB2517-JZX (encapsulado 64-pin qfn (9x9 mm) with ep). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para USB2517-JZX.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
USB2517-JZX es adecuado para 6 aplicacións: USB Port Expansion in Computer Monitors, Docking Stations and Port Replicators, Industrial PCs and Embedded Computing, Consumer USB Hubs and Charging Stands, Automotive Infotainment and Head Units, Test and Measurement Equipment.
USB Port Expansion in Computer Monitors
The USB2517-JZX is ideally suited for computer monitor USB hub integration. With 7 downstream ports, it can expose side-mounted USB 2.0 ports to the user while the upstream port connects to the host PC through the monitor's built-in USB cable. Its 64-QFN 9x9 mm footprint fits comfortably behind the monitor's input panel, and its 1.8V/3.3V dual-suprail flexibility lets it share a regulator with the monitor's scaler IC. Designers can populate only the ports they need and leave the remainder unconnected, making the same BOM scalable from 4 to 7 ports without changing the hub silicon.
Recomendado
Docking Stations and Port Replicators
In laptop docking stations, the USB2517-JZX's 7-port capability delivers ample downstream headroom for keyboards, mice, external storage, printers, and webcams. The MultiTRAK multi-transaction translator ensures that multiple Full-Speed peripherals (such as a USB headset and a webcam) can stream concurrently without bandwidth starvation. Its 480 Mbps upstream Hi-Speed link preserves SSD-class USB 2.0 throughput for external storage. The 64-QFN package's exposed pad keeps the IC within thermal limits even when all 7 ports are fully loaded, simplifying thermal design in a sealed dock enclosure.
Recomendado
Industrial PCs and Embedded Computing
The USB2517-JZX brings 7 USB 2.0 ports to industrial PCs, HMIs, and panel computers where expansion slots are limited. The optional industrial temperature variant (USB2517I-JZX, same 64-QFN footprint) supports -40 C to +85 C operation for factory-floor and outdoor enclosures. Per-port over-current sensing protects field wiring from downstream short circuits, and the integrated 3.3V regulator simplifies the power tree. The SMBus configuration interface allows the system firmware to dynamically remap ports or disable unused ports, which is useful in IEC 61131-3 programmable logic controllers and SCADA front ends.
Recomendado
Consumer USB Hubs and Charging Stands
For consumer-grade USB hubs and desktop charging stands, the USB2517-JZX's 7-port capacity supports multiple smartphones, tablets, and peripherals. USB Battery Charging 1.1 pre-configurations allow dedicated charging ports (DCP) on selected downstream ports, enabling fast-charge of Apple and Android devices without host intervention. Ganged power switching reduces BOM cost for simple 7-port charging hubs, while per-port switching suits hubs with mixed data and charging roles. The 64-QFN 9x9 mm package is small enough for slimline consumer enclosures.
Recomendado
Automotive Infotainment and Head Units
In automotive infotainment systems, the USB2517-JZX-AC0 variant (AEC-Q100 qualified, same 64-QFN footprint) provides 7 USB 2.0 ports for media players, smartphones, and rear-seat entertainment. Its automotive-grade screening, gold bond wire option, and -40 C to +85 C industrial temperature range handle the harsh under-dash thermal environment. BC 1.1 charging pre-configurations enable fast-charge of passenger phones, while per-port over-current detection protects vehicle wiring harnesses from short circuits caused by contaminated cables.
Recomendado
Test and Measurement Equipment
Bench-top test equipment such as oscilloscopes, logic analyzers, and protocol analyzers often require multiple USB 2.0 ports for device-under-test interfacing, mass-storage logging, and host connectivity. The USB2517-JZX's MultiTRAK transaction translator handles concurrent Full-Speed USB traffic from multiple instruments without bottlenecking the upstream port, while the 480 Mbps Hi-Speed link keeps waveform capture streaming to external SSDs. Its compact 64-QFN footprint leaves room for BNC connectors and probe compensation circuitry on the same front-end board.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para USB2517-JZX — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | USB2517I-JZX | USB2517-JZX-TR | USB2517-JZX-AC0 | USB2517I-JZX-CAG | USB2514B-AEZG |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 36-QFN (6x6 mm) - different |
| Number of Downstream Ports | 7 | 7 | 7 | 7 | 7 | 4 |
| Operating Temperature Range | 0 C to +70 C | -40 C to +85 C | 0 C to +70 C | -40 C to +85 C (AEC-Q100) | -40 C to +85 C | -40 C to +85 C |
| Supply Voltage | 1.8 V / 3.3 V | 1.8 V / 3.3 V | 1.8 V / 3.3 V | 1.8 V / 3.3 V | 1.8 V / 3.3 V | 3.3 V |
| USB Battery Charging 1.1 | Yes | Yes | Yes | Yes | Yes | Yes |
| Automotive Qualified (AEC-Q100) | No | No | No | Yes | No | No |
| Approx. Unit Price (qty 100, USD) | 5.05 | 5.50 | 5.05 | 7.20 | 6.40 | 3.20 |
Diferenciadores clave
- Highest port count in the USB251x family with industrial temperature option (frente a USB2514B-AEZG)
- Industrial temperature variant on identical 64-QFN footprint (frente a USB2517I-JZX)
- AEC-Q100 automotive qualified version on identical 64-QFN footprint (frente a USB2517-JZX-AC0)
Notas de diseño
Route the upstream port's 90 ohm differential pair (D+/D-) as a length-matched, impedance-controlled USB 2.0 microstrip with a continuous reference ground plane on layer 2. The pair should be no longer than 50 mm on a 4-layer FR-4 stackup, and series chokes of 90 ohm common-mode should be placed within 5 mm of the upstream connector. The exposed thermal pad of the 64-QFN must be soldered to a 1 oz copper pour with at least 8 thermal vias (0.3 mm drill, 0.6 mm pitch) to keep junction temperature within spec when all 7 ports are loaded. Per-port over-current sense resistors (typically 75 mV trip) must be placed within 10 mm of the PRTPWRx pins.
Decouple each VDD pin (VDD33, VDD18, VDD12) with a 0.1 uF X7R ceramic capacitor tied to a solid ground pour, plus a 10 uF bulk capacitor near the upstream port power switch. The 1.8V rail can be generated by the internal LDO from the 3.3V supply, or supplied externally if the design also powers other 1.8V ICs. When using bus-powered mode, ensure that the upstream VBUS 5V sensing is connected through a voltage divider compliant with USB 2.0 session-detect requirements; in self-powered mode, the upstream VBUS is supplied by the local 5V regulator and the hub presents itself as a self-powered device to the host.
A common mistake is leaving the upstream port's series choke unpopulated, which causes the hub to enumerate but fail USB-IF compliance testing on signal-quality eye-pattern margins. Another pitfall is forgetting to populate the external 24 MHz crystal load capacitors (typically 12-18 pF) or routing the XI/XO traces over a discontinuous reference plane, which leads to jitter and intermittent Hi-Speed enumeration failures. Finally, the SMBus address selection pins (CFG_SEL) must be strapped correctly at reset or the hub may power up in an unintended configuration; double-check the configuration matrix in the datasheet's register map section before prototyping.
Información de cumplimiento
Standard USB2517-JZX is RoHS and REACH compliant per Microchip product page. The USB2517-JZX-AC0 variant is AEC-Q100 qualified for automotive applications. The USB2517I-JZX-CAG uses gold bond wires for high-reliability applications.
