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Diodes Incorporated PI3USB221EZUAEX
- Part No.:
- PI3USB221EZUAEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Analog Switches - Special Purpose
- Package:
- 10-UFQFN
- Datasheet:
-
PI3USB221EZUAEX.pdf
- Description:
- IC USB2 SWITCH 3V UQFN2015-10
- Quantity:
- Payment:
- Shipping:
Inventory:10,748
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Product details
Overview
PI3USB221EZUAEX from Diodes Incorporated is a high-speed USB 2.0 1:2 multiplexer/demultiplexer switch in a 10-pin UQFN (ZUA) package, supporting bidirectional 480 Mbps data routing with 1.6 GHz bandwidth, 6 Ω max rON, and integrated over-voltage protection on D+/D− pins for VBus-short tolerance up to 5V ±5%. It enables USB port sharing in space-constrained mobile devices.
For engineers reviewing the PI3USB221EZUAEX datasheet, PI3USB221EZUAEX pinout, PI3USB221EZUAEX application, or PI3USB221EZUAEX equivalent, key selection criteria include channel-to-channel isolation (–41 dB OFF-isolation), low bit-to-bit skew (0.2 ns max), 1.8-V compatible control inputs, and ESD robustness (±8 kV contact per IEC61000-4-2).
Technical Context
The PI3USB221EZUAEX implements a dual-channel analog switch architecture with independent select (S) and output-enable (OE) logic, supporting dynamic reconfiguration between two USB downstream ports while maintaining signal integrity across differential pairs. Its low rON flatness (1 Ω max) and <0.2 Ω ΔrON ensure minimal amplitude mismatch between channels.
It operates across 2.3–3.6 V supply with VI/O tolerance up to 5.5 V, enabling direct interfacing with legacy 5 V signaling domains without level shifters. The device enters ultra-low-power mode (<4 µA ICC) when OE is high, and features 4 pF typical Cio(on) to preserve high-speed eye diagram integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth (–3 dB) | 1.6 GHz - preserves USB 2.0 eye opening and edge fidelity at 480 Mbps |
| rON (max) | 6 Ω - limits insertion loss and voltage drop under ±120 mA signal current |
| ΔrON (typ) | 0.2 Ω - ensures matched channel gain for differential pair routing |
| Cio(on) (typ) | 4 pF - minimizes capacitive loading on high-speed D+/D− traces |
| OVP Threshold | 3.8 V (typ) - clamps D+/D− to safe levels during VBus short events |
| tON/tOFF | 100/12 ns - enables fast USB enumeration and hot-plug response |
| ESD Rating (D+/D−) | ±8 kV contact (IEC61000-4-2) - eliminates need for external TVS diodes |
Pinout & Package
PI3USB221EZUAEX uses a 10-pin, 1.5 mm × 2.0 mm UQFN (ZUA10) package with wettable flanks and top-left corner pin 1 marking. Thermal resistance θJA is 48.7°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1D+, 1D− | Differential output port 1 | USB 2.0 data path routed when S = L and OE = L |
| 2D+, 2D− | Differential output port 2 | USB 2.0 data path routed when S = H and OE = L |
| D+, D− | Common differential input | Connects to USB host controller or hub upstream port |
| S | Port select input | Active-HIGH logic selects 2D+/2D−; active-LOW selects 1D+/1D− |
| OE | Output enable (active LOW) | Disables both paths and reduces ICC to ≤4 µA in standby |
| VDD | Supply voltage | 2.3–3.6 V digital/analog rail; powers internal logic and switch FETs |
| GND | Ground reference | Return path for all signals and supply; requires low-inductance layout |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional USB 2.0 switching | Supports full-duplex 480 Mbps traffic without direction control logic |
| Integrated over-voltage protection | Passes <3.8 V to outputs during D+/D−–to–VBus shorts, eliminating external clamp diodes |
| 1.8-V compatible control inputs | Accepts 1.4 V VIH threshold at 2.7–3.6 V VDD, enabling direct interface with low-voltage MCUs |
| Low channel-to-channel crosstalk | –40 dB at 250 MHz ensures signal integrity when routing adjacent USB and MIPI lanes |
| Ultra-low standby current | ≤4 µA ICC in OE-disabled state extends battery life in portable USB accessories |
Applications
| Smartphone USB Switching | Tablet Docking Hub |
|---|---|
|
Use Scenario: A smartphone routes its single USB 2.0 PHY to either a charging port or an OTG peripheral via software-controlled switching. IC Role / Device Role / Timing Role: Bidirectional 1:2 MUX providing dynamic path selection with sub-100 ns tON for seamless OTG handover. Use Value: Eliminates mechanical switches and enables firmware-driven USB role negotiation without signal degradation. |
Use Scenario: A tablet docking station shares one upstream USB 2.0 controller among multiple downstream peripherals (keyboard, storage, display adapter). IC Role / Device Role / Timing Role: High-isolation demultiplexer ensuring >41 dB OFF-state rejection between concurrent USB endpoints. Use Value: Prevents cross-talk-induced packet corruption during simultaneous high-bandwidth transfers. |
| Notebook USB Expansion | MIPI D-PHY Signal Routing |
|
Use Scenario: An ultrabook with limited USB controller I/O expands connectivity using a Type-C port that dynamically assigns D+/D− to internal or external hubs. IC Role / Device Role / Timing Role: Low-skew (0.2 ns max tSK(O)) switch preserving USB 2.0 eye margin across PCB trace length mismatches. Use Value: Maintains compliance with USB 2.0 eye diagram mask despite routing through compact multi-layer board stacks. |
Use Scenario: A camera module subsystem routes MIPI D-PHY data lanes between image sensor and baseband processor or application processor based on mode selection. IC Role / Device Role / Timing Role: Wide-bandwidth (1.6 GHz) analog switch supporting MIPI D-PHY v1.2 1.5 Gbps operation with <4 pF Cio(on). Use Value: Enables shared physical layer between dual-processor architectures without adding jitter or attenuation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB 2.0 multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS3USB221RSER | TI part with identical 10-pin UQFN package, 6 Ω rON, but higher 5.5 V VI/O limit and no integrated OVP | Requires external 5 V-tolerant clamping for VBus fault protection | Preferred where system-level ESD is already managed externally and lower cost is prioritized |
| MAX14532EWC+ | Maxim part with 1.2 GHz bandwidth, 8 Ω rON, and 1.2 V control compatibility, but larger 12-pin WLP package | Larger footprint and lower bandwidth limit USB 2.0 margin at long trace lengths | Selected when ultra-low voltage control (1.2 V) is mandatory and board area is not constrained |
Compared with TS3USB221RSER and MAX14532EWC+, the PI3USB221EZUAEX uniquely combines integrated over-voltage protection, 1.6 GHz bandwidth, and 1.8-V control compatibility in a compact 1.5×2.0 mm UQFN-making it optimal for space-limited, VBus-exposed mobile USB routing.
Availability
PI3USB221EZUAEX is available at Aetrix Electronics and suitable for smartphone USB switching, tablet docking hubs, notebook expansion interfaces, and MIPI D-PHY routing requiring stable component supply and RoHS 3-compliant sourcing.
Supply support for PI3USB221EZUAEX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and ICs, specializing in high-performance analog, logic, and USB interface solutions for consumer, computing, and industrial markets.
The PI3USB221E belongs to Diodes' high-speed analog switch product line, engineered specifically for USB 2.0 and MIPI signal routing in portable electronics where signal fidelity, small footprint, and system-level protection integration are critical.
FAQ
Does PI3USB221EZUAEX support USB On-The-Go (OTG) functionality?
Yes-it supports OTG by enabling bidirectional, low-latency switching between host and peripheral roles without direction control pins. Its 100 ns tON, <0.2 ns skew, and 1.6 GHz bandwidth maintain USB 2.0 eye integrity during role swaps, and the integrated OVP protects against VBus faults common in OTG cable reversals.
Can PI3USB221EZUAEX operate with a 1.8 V supply?
No-its VDD range is strictly 2.3 V to 3.6 V per datasheet Section 3. However, its control inputs (S and OE) are 1.8-V compatible: VIH is 1.3 V min at VDD = 2.3–2.7 V, allowing direct connection to 1.8 V GPIOs without level shifters while VDD remains at 2.5 V or 3.3 V.
What is the thermal performance of the ZUA package in continuous operation?
The UQFN (ZUA) package has a θJA of 48.7°C/W. At maximum rated ICC of 50 µA and worst-case ambient (85°C), junction temperature rise is negligible (<3°C). Under full-signal conditions (±120 mA), self-heating remains within safe limits due to low rON and efficient thermal coupling to PCB copper.
Is PI3USB221EZUAEX qualified for automotive applications?
No-the datasheet explicitly states automotive qualification (AEC-Q100/101/200, PPAP, IATF 16949) requires special change control and must be requested separately. PI3USB221EZUAEX is specified for commercial/industrial temperature range (–40°C to +85°C) and carries no automotive-grade reliability documentation or test reports.
PI3USB221EZUAEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 10-UFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- USB
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Switch Circuit:
- SPDT
- Number of Channels:
- 1
- On-State Resistance (Max):
- 6Ohm
- Voltage - Supply, Single (V+):
- 2.3V ~ 3.6V
- Voltage - Supply, Dual (V±):
- -
- -3db Bandwidth:
- 1.1GHz
- Features:
- Bi-Directional, USB 2.0
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-UQFN (1.5x2)
PI3USB221EZUAEX FAQ
1.How can I place an order for PI3USB221EZUAEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI3USB221EZUAEX on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PI3USB221EZUAEX reliable?
The price and inventory of PI3USB221EZUAEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3USB221EZUAEX is usually 5 days.
3.What payment methods are accepted for PI3USB221EZUAEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3USB221EZUAEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI3USB221EZUAEX?
PI3USB221EZUAEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI3USB221EZUAEX order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PI3USB221EZUAEX?
For technical support, including PI3USB221EZUAEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3USB221EZUAEX requirements.
6.How does Aetrix verify that PI3USB221EZUAEX is sourced from the original manufacturer or authorized distributors?
All PI3USB221EZUAEX products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PI3USB221EZUAEX meets industry standards.
7.What is the process for return or replacement of PI3USB221EZUAEX?
All PI3USB221EZUAEX units undergo pre-shipment inspection (PSI). If there is an issue with PI3USB221EZUAEX, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PI3USB221EZUAEX part is unused and in its original packaging.
Return procedure for PI3USB221EZUAEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PI3USB221EZUAEX Tags
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TS3USB221ARSER
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TS3USB221AQRSERQ1
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NX3DV221GM,115
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NX3DV2567GU,115
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TS3USB221RSER
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TS3USB221ERSER
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TC7USB40MU,LF(S2E
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TS3USB30EDGSR
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PI3USB221AZUAEX
Diodes Incorporated
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FSUSB42UMX
onsemi
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CBTL01023GM,115
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TS3USB30ERSWR
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