PI3USB102GZLEX - USB 2.0 2:1 Switch with 5V Protection | Diodes Inc
Référence : PI3USB102GZLEX ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $0.95 | $0,95 |
| 10 | $0.86 | $8,60 |
| 100 | $0.7 | $70,00 |
| 500 | $0.59 | $295,00 |
| 1 000 | $0.48 | $480,00 |
| 3 500 | $0.4 | $1 400,00 |
PI3USB102GZLEX Présentation
A USB switch is a specialized analog multiplexer designed to route USB 2.0 differential pairs between two physical ports or between a single port and a downstream controller. It belongs to the broader family of analog switches and multiplexers, which sit under interface ICs in the semiconductor taxonomy. These parts are critical in systems where one USB physical-layer transceiver must service multiple connectors, OTG roles, USB Type-C role swaps, dock/multi-connector designs, or test-mode path selection. By isolating one data path while activating another, the switch lets one SoC PHY serve two USB connectors without contention.
Key differentiating features include very low bit-to-bit skew, high channel-to-channel noise isolation, flow-through pinout for simplified PCB routing, and an improved Ioff voltage range that reduces leakage when VCC is removed. Bidirectional operation means it supports both host-side and device-side roles equally well, and it operates across the -40C to +85C industrial temperature range. The 10-TQFN (1.3x1.6) footprint measures only 2.08 mm^2, enabling it to fit comfortably inside USB connector shields, Type-C mid-mount boards, and dongle-class products.
Typical applications for the PI3USB102GZLEX span consumer tablets, notebooks, dock stations, USB Type-C adapters, OTG phones, and any system that needs to share one USB 2.0 PHY between two physical ports. Inside a tablet, for example, it sits between the SoC's USB pins and the system micro-USB or Type-C connector, providing 5V Vbus short protection for the SoC's USB lines. The part can also multiplex between an internal USB header and an externally accessible connector for service-mode diagnostics or docking.
When designing with the PI3USB102GZLEX, place the device adjacent to the USB connector so the 5V Vbus short protection works as close to the system boundary as possible. Use a 100 nF decoupling capacitor close to VCC, and follow the USB 2.0 differential pair impedance target of 90 ohm differential. When the chip is powered down, signal leakage through the switch is dominated by Ioff, so confirm this does not exceed downstream PHY leakage budgets.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical PCB design considerations - information that goes beyond what is found in the manufacturer datasheet alone.
Alternatives de remplacement direct pour PI3USB102GZLEX — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PI3USB102ZLEX
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PI3USB102GZLEX-2017
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PI3USB103ZLEX
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PI3USB102G
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PI3USB102ZLE
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PI3USB102GZLEX Valeurs maximales et caractéristiques électriques
| Switch Type | USB 2.0 High-Speed Switch |
| Switch Configuration | 2:1 Multiplexer/Demultiplexer (single differential channel) |
| Number of Channels | 1 |
| On-State Resistance (Ron) Max | 5 ohm |
| -3 dB Bandwidth | 1 GHz |
| Débit de données | 480 Mbps (USB 2.0 High Speed) |
| Over-Voltage Protection | 5V +/- 10% on Y+/Y- (USB 2.0 spec) |
| Ioff Feature | Improved Ioff voltage range when VCC removed |
| Differential Channels | 1 (D+/D-) |
| Plage de température de fonctionnement | -40C to +85C (TA) |
| Bidirectional | Yes (host or device role) |
| Boîtier | 10-TQFN (1.3 mm x 1.6 mm) with exposed pad |
| Type de montage | Surface Mount |
| Statut RoHS | ROHS3 Compliant |
| Pinout | Flow-through layout |
Configuration des broches de PI3USB102GZLEX
| Broche 1 | Y+ — Common-side USB differential pair positive (D+) |
| Broche 2 | Y- — Common-side USB differential pair negative (D-) |
| Broche 3 | GND — Ground reference |
| Broche 4 | OE — Output enable / switch select (active logic per datasheet) |
| Broche 5 | SEL — Path select between A and B USB port pair |
| Broche 6 | B- — Port B USB differential pair negative |
| Broche 7 | B+ — Port B USB differential pair positive |
| Broche 8 | VCC — Positive supply input |
| Broche 9 | A- — Port A USB differential pair negative |
| Broche 10 | A+ — Port A USB differential pair positive |
Applications typiques
PI3USB102GZLEX convient pour 6 applications: Tablet / Notebook USB Port Sharing, USB Type-C Adapter Dongles, Docking Station USB Routing, Industrial USB Test / Service Ports, Consumer USB OTG Phones, USB Headset / Audio Dongle Routing.
Tablet / Notebook USB Port Sharing
The PI3USB102GZLEX lets a single USB 2.0 PHY inside a tablet or notebook service two physical connectors - for example, an internal debug header plus a user-facing micro-USB or USB Type-C port. Its 5 ohm max on-resistance and 1 GHz -3 dB bandwidth preserve USB 2.0 high-speed eye-diagram margin at 480 Mbps, while the integrated 5V over-voltage protection on the Y+/Y- pins defends the SoC's USB lines against Vbus shorts at the connector. Pair it with a 5V load switch and a USB Type-C controller so role-swap events route cleanly through the switch.
Recommandé
USB Type-C Adapter Dongles
In USB Type-C adapter dongles that convert USB Type-C to legacy USB-A, the PI3USB102GZLEX multiplexes the USB 2.0 differential pair between charge-through and data roles. The 10-TQFN (1.3x1.6 mm) package sits inside the dongle's connector housing, and its flow-through pinout simplifies routing the D+/D- pair directly through the device. The 5V +/- 10% over-voltage protection gives the dongle robustness against user-induced Vbus miswiring, a common failure mode for inexpensive adapters.
Recommandé
Docking Station USB Routing
Docking stations frequently need to multiplex a single USB 2.0 link between an upstream port to the host and multiple downstream device ports. The PI3USB102GZLEX, with its 480 Mbps high-speed compliance and very low bit-to-bit skew, fits this role while staying inside the dock's compact PCB area. Improved Ioff behavior ensures downstream devices see proper USB suspend-state behavior when the host goes to sleep, and the 5V Vbus short protection isolates the upstream port if any downstream device misbehaves on the bus.
Recommandé
Industrial USB Test / Service Ports
Many industrial computers include both a user-facing USB port and an internal service / programming port that share one USB PHY. The PI3USB102GZLEX multiplexes between them, allowing firmware update or test tool access without unplugging the user-facing connector. The -40C to +85C industrial temperature range supports factory and outdoor installations, while the flow-through TQFN-10 pinout makes it straightforward to place the switch adjacent to each connector on the PCB.
Recommandé
Consumer USB OTG Phones
In USB OTG-capable phones and tablets, the PI3USB102GZLEX routes the USB 2.0 pair between the external micro-USB / Type-C connector and an internal device-mode controller. Its bidirectional switch architecture supports OTG role-swap transparently, and the 1 GHz bandwidth ensures that 480 Mbps high-speed traffic passes through with minimal insertion loss. The 5V over-voltage protection is critical in mobile designs where Vbus shorts from charging cable damage are a common field-failure mode.
Recommandé
USB Headset / Audio Dongle Routing
USB audio dongles that toggle between headphone and microphone modes can use the PI3USB102GZLEX to multiplex the USB 2.0 pair to the audio codec or to the host controller. The switch's low 5 ohm on-resistance and high channel-to-channel noise isolation preserve the low-noise floor critical for high-fidelity audio. The PI3USB102GZLEX integrates cleanly with Type-C connector controller logic to handle analog-audio-over-USB mode detection events on modern phones.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PI3USB102GZLEX — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PI3USB102ZLEX | PI3USB102GZLEX-2017 | PI3USB103ZLEX | PI3USB102G | PI3USB102ZLE |
|---|---|---|---|---|---|---|
| Brand | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated |
| Package | 10-TQFN (1.3x1.6) | 10-TQFN (1.3x1.6) - same | 10-TQFN (1.3x1.6) - same | 10-TQFN - same family | 10-TQFN (1.3x1.6) - same | 10-TQFN (1.3x1.6) - same |
| Switch Configuration | 2:1 Mux/DeMux (single differential) | 2:1 Mux/DeMux (single differential) | 2:1 Mux/DeMux (single differential) | Different configuration (same family) | 2:1 Mux/DeMux (single differential) | 2:1 Mux/DeMux (single differential) |
| On-Resistance (Max) | 5 ohm | 5 ohm | 5 ohm | Similar 5 ohm-class Ron | 5 ohm | 5 ohm |
| Bandwidth | 1 GHz (-3 dB) | 1 GHz (-3 dB) | 1 GHz (-3 dB) | Similar GHz-class | 1 GHz (-3 dB) | 1 GHz (-3 dB) |
| 5V Over-Voltage Protection | Yes (improved Ioff feature) | Yes (older Ioff) | Yes (improved Ioff feature) | Yes (5V +/- 10%) | Yes (improved Ioff feature) | Yes (older Ioff) |
| Operating Temperature Range | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| RoHS / Lead-Free | RoHS3 / Lead-Free | RoHS / Lead-Free | RoHS / Lead-Free | RoHS / Lead-Free | RoHS / Lead-Free | RoHS / Lead-Free |
Principaux différenciateurs
- Improved Ioff feature reduces leakage when VCC is removed (vs PI3USB102ZLEX)
- Latest USB 2.0 5V +/-10% over-voltage protection (vs PI3USB102ZLEX)
- Compact 1.3 mm x 1.6 mm TQFN-10 footprint (vs PI3USB103ZLEX)
Notes de conception
Place the PI3USB102GZLEX adjacent to the USB connector so the 5V Vbus short protection works as close to the system boundary as possible, minimizing the distance any over-voltage transient must travel before the switch clamps it. Maintain 90 ohm differential impedance on the D+/D- pair both upstream and downstream of the switch, with no stubs or sharp bends in the routing. The flow-through pinout keeps Y+/Y- pins in line with A+/A- and B+/B- pins, simplifying layout and reducing via count on the high-speed path.
Use a 100 nF X7R decoupling capacitor as close as possible to the VCC pin (pin 8) and a 10 uF bulk capacitor near the regulator that feeds it. The PI3USB102GZLEX draws relatively low quiescent current but switches between USB paths at microsecond speeds, so a low-impedance VCC supply is essential to prevent logic-glitching on the OE and SEL control pins. Avoid sharing the VCC rail with noisy switching regulators - use a dedicated LDO downstream of the main converter for clean 5V or 3.3V supply.
Verify USB 2.0 high-speed eye-diagram compliance with the PI3USB102GZLEX in-circuit, including both the unselected-port (high-impedance to downstream) and selected-port paths. The 5 ohm Ron is excellent for signal integrity, but the additional capacitive loading introduced by the switch's ESD protection diodes can marginally reduce rise time at 480 Mbps. If rise time degrades too much, consider length-matching the unselected pair stub downstream of the switch to under 1 mm.
Do not assume the PI3USB102GZLEX tolerates continuous 5V on the A+/A- or B+/B- pins when VCC is removed in all operating modes; the improved-Ioff variant covers the typical Vbus fault case (5V +/- 10%) but extreme fault voltages may still damage the part. For systems exposed to industrial line transients above 12V, place an external TVS diode on each differential line. Also, beware confusing the PI3USB102G with the PI3USB102Z - the -G variant has improved Ioff, the -Z does not, and drop-in migration requires review of legacy designs.
Use a continuous reference ground plane beneath the PI3USB102GZLEX, with no splits under the high-speed differential pair routing. The 10-TQFN exposed pad must be soldered to a properly sized thermal/ground pad that connects to the inner ground plane via at least 4 thermal vias in a 4x4 grid pattern. Route the D+/D- pair with no more than two vias between the SoC and the connector to minimize impedance discontinuities that could fail USB 2.0 high-speed compliance testing.
Informations de conformité
ROHS3 compliant per Partgenie and Diodes product compliance data. Not AEC-Q100 qualified - this part targets consumer/computing/industrial USB routing rather than automotive-grade applications.
