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Diodes Incorporated PI3USB221EQ1ZUAEX
- Part No.:
- PI3USB221EQ1ZUAEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Analog Switches - Special Purpose
- Package:
- 10-UFQFN
- Datasheet:
-
PI3USB221EQ1ZUAEX.pdf
- Description:
- USB2 SWITCH U-QFN2015-10 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:2,903
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Product details
Overview
PI3USB221EQ1ZUAEX from Diodes Incorporated is a high-speed USB 2.0 1:2 multiplexer/demultiplexer switch with signal enable, designed for bidirectional differential switching of D+/D− data paths in mobile and automotive USB host routing applications. It features 6 Ω max rON, 1.6 GHz bandwidth, –41 dB OFF isolation at 250 MHz, AEC-Q100 Grade 1 qualification (–40°C to +125°C), and integrated over-voltage protection on D+/D− pins up to 5 V.
For engineers reviewing the PI3USB221EQ1ZUAEX datasheet, PI3USB221EQ1ZUAEX pinout, PI3USB221EQ1ZUAEX application, or PI3USB221EQ1ZUAEX equivalent, key selection criteria include low channel-to-channel skew (<0.2 ns), 1.8-V compatible control inputs, 2 µA low-power disable current, and UQFN-10 (ZUA) package compatibility with space-constrained PCB layouts.
Technical Context
The PI3USB221EQ implements a dual-port, single-pole double-throw (SPDT) analog switch architecture with independent S (select) and OE (active-low output enable) control logic. Its internal switch matrix routes either 1D+/1D− or 2D+/2D− to the common D+/D− port while maintaining signal integrity across the full USB 2.0 480 Mbps eye diagram.
It supports true bidirectional operation without direction pins, uses CMOS-compatible 1.8-V control thresholds, and integrates ESD protection per IEC61000-4-2 (±8 kV contact), HBM (12 kV on I/O), and CDM (1 kV), all while operating from 2.3 V to 3.6 V VDD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| rON (max) | 6 Ω - Ensures minimal insertion loss and voltage drop for 480 Mbps USB 2.0 signals under full load. |
| Bandwidth (–3 dB) | 1.6 GHz - Preserves signal edge rate and eye opening for high-speed differential signaling. |
| OIRR (OFF isolation) | –41 dB @ 250 MHz - Reduces crosstalk between active and inactive USB ports during switching. |
| tSK(O) (output skew) | 0.2 ns max - Maintains tight timing alignment between differential pairs across ports. |
| Vpass (OVP threshold) | 3.8 V typical - Limits downstream voltage to safe levels when D+/D− are shorted to 5 V VBus. |
| ICC (operating) | 50 µA max - Enables ultra-low power consumption in portable and always-on automotive modules. |
| ESD rating (I/O) | 12 kV HBM - Eliminates need for external TVS diodes on USB data lines in harsh environments. |
Pinout & Package
PI3USB221EQ1ZUAEX is housed in a 10-pin, 1.5 mm × 2.0 mm UQFN package (ZUA code) with wettable flanks and 0.4 mm pitch. The package supports automated optical inspection (AOI) and offers low thermal resistance (θJA = 243°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (1D+) | Differential data output port 1, positive | Connects to USB device port 1 D+ line; bidirectional path with matched impedance. |
| 2 (1D−) | Differential data output port 1, negative | Paired with Pin 1; maintains <100 Ω differential impedance and sub-0.2 ns skew. |
| 3 (2D+) | Differential data output port 2, positive | Routes to second USB peripheral; shares common D+/D− path via internal SPDT switch. |
| 4 (2D−) | Differential data output port 2, negative | Complements Pin 3; isolated from Pin 1/2 when S = H and OE = L. |
| 9 (S) | Select input (active-H) | Chooses between port 1 (S = L) or port 2 (S = H); 1.8-V logic compatible. |
| 8 (D+) | Common differential input/output, positive | Connects to USB host controller D+; bidirectional signal path shared by both ports. |
| 7 (D−) | Common differential input/output, negative | Paired with Pin 8; maintains phase coherence and minimizes bit-to-bit skew. |
| 6 (OE) | Output enable (active-L) | Disables all switch paths when high; reduces supply current to ≤2 µA for system sleep modes. |
| 10 (VDD) | Supply voltage | Accepts 2.3–3.6 V; powers internal logic and switch FETs; decoupling required near pin. |
| 5 (GND) | Ground reference | Low-inductance return path for signal and supply currents; must be connected to solid ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional USB 2.0 switching | Supports full 480 Mbps data flow in either direction without direction control pins or level shifters. |
| Integrated over-voltage protection (OVP) | Clamps D+/D− to ≤3.8 V when shorted to 5 V VBus, protecting downstream PHY without external components. |
| Automotive-grade reliability | AEC-Q100 Grade 1 qualified, manufactured in IATF 16949 facilities, with PPAP support for Tier-1 programs. |
| Ultra-low power disable mode | Draws ≤2 µA when OE = H, enabling zero-leakage USB port gating in battery-sensitive systems. |
| High noise immunity | –40 dB crosstalk and –41 dB OFF isolation at 250 MHz suppress coupling between active/inactive ports. |
Applications
| USB Host Port Sharing | Automotive Infotainment Hub |
|---|---|
|
Use Scenario: A single USB host controller in a smartphone or tablet must dynamically route high-speed data to either a camera module or an external storage device. IC Role / Device Role / Timing Role: Acts as a bidirectional 1:2 MUX/DEMUX to select between two peripherals while preserving USB 2.0 eye integrity and minimizing propagation delay (<0.25 ns). Use Value: Eliminates need for dual-host controllers; enables compact PCB layout with only one USB PHY and shared D+/D− traces. |
Use Scenario: In-vehicle infotainment system connects USB-C dock, rear-seat media player, and diagnostic OBD-II interface through one SoC USB port. IC Role / Device Role / Timing Role: Provides AEC-Q100-compliant, hot-plug-capable port selection with ESD robustness (±8 kV contact) and thermal stability up to +125°C ambient. Use Value: Enables fail-safe USB routing without signal degradation or timing violation across temperature extremes and vibration conditions. |
| Mobile Peripheral Switching | Industrial USB Hub Expansion |
|
Use Scenario: Portable medical device with dual USB interfaces-one for PC sync and another for printer output-shares a single microcontroller USB transceiver. IC Role / Device Role / Timing Role: Functions as a low-skew, low-rON analog switch with 1.8-V control inputs compatible with modern low-voltage MCUs. Use Value: Reduces BOM count and board area versus discrete MOSFET-based solutions while guaranteeing USB 2.0 compliance. |
Use Scenario: Factory automation controller adds USB 2.0 expansion capability to legacy industrial PLCs lacking native USB ports. IC Role / Device Role / Timing Role: Serves as front-end signal router in externally powered hub designs, supporting hot-swap and VBus fault tolerance via integrated OVP. Use Value: Extends USB connectivity without compromising signal fidelity or requiring additional protection circuitry. |
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 |
|---|---|---|---|
| TS3USB30E | Single 2-channel switch; no OE pin; 8-pin VSSOP; rON = 8 Ω max; not AEC-Q100 qualified. | Limited to commercial temperature range (–40°C to 85°C); lacks automotive change control and PPAP support. | Preferred for cost-sensitive consumer electronics where AEC-Q100 and extended temp are unnecessary. |
| MAX14533 | 3.3-V only operation; 12-pin TQFN; rON = 7 Ω max; no integrated OVP; 10 kV HBM ESD. | No over-voltage protection on D+/D−; requires external clamping for VBus fault scenarios. | Suitable for industrial USB routing where external protection is already implemented and wider VDD range is not needed. |
Compared with TS3USB30E and MAX14533, PI3USB221EQ1ZUAEX uniquely combines AEC-Q100 Grade 1 qualification, integrated 5 V-tolerant OVP, 2 µA disable current, and UQFN-10 packaging-making it the only choice for automotive USB port sharing requiring functional safety alignment and zero-additional-protection design.
Availability
PI3USB221EQ1ZUAEX is available at Aetrix Electronics and suitable for automotive infotainment systems, portable medical devices, and industrial USB hub expansion requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.
Supply support for PI3USB221EQ1ZUAEX 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 integrated circuits, specializing in high-performance analog, logic, and protection solutions for automotive, industrial, and consumer markets.
The PI3USB221EQ belongs to Diodes' Pericom-branded high-speed interface switch product line, engineered specifically for USB 2.0, MIPI, and other differential signaling applications demanding low skew, high bandwidth, and robust ESD/OVP protection.
FAQ
Is PI3USB221EQ1ZUAEX compatible with USB 1.1 and USB 1.0 signals?
Yes. The device's 1.6 GHz bandwidth and low rON ensure full compatibility with USB 1.1 (12 Mbps) and USB 1.0 (1.5 Mbps) signaling. Its bidirectional architecture preserves signal integrity across all USB speed modes without requiring configuration changes or external termination.
What is the maximum continuous current rating for the D+/D− signal paths?
The PI3USB221EQ1ZUAEX supports ±120 mA continuous current per D+/D− path, verified under recommended operating conditions (VDD = 2.3–3.6 V, TA = –40°C to +125°C). This exceeds USB 2.0 bus-powered device requirements and accommodates transient surge events.
Does the device require external pull-up or pull-down resistors on control pins?
No. All control inputs (S and OE) have internal weak pull-downs specified in the datasheet. However, Diodes recommends tying unused control inputs directly to VDD or GND to prevent floating states and ensure deterministic switching behavior in noisy environments.
Can PI3USB221EQ1ZUAEX operate with VDD = 2.5 V while interfacing with 5 V-tolerant USB data lines?
Yes. The device supports VDD from 2.3 V to 3.6 V and accepts VI/O up to 5.5 V on D+/D− pins regardless of VDD level. This allows direct connection to 5 V USB VBus-referenced signals while powering the IC from a 2.5 V rail-ideal for mixed-voltage system designs.
PI3USB221EQ1ZUAEX 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:
- 1:2
- Switch Circuit:
- DPST
- Number of Channels:
- 2
- On-State Resistance (Max):
- 7Ohm
- Voltage - Supply, Single (V+):
- 2.3V ~ 3.6V
- Voltage - Supply, Dual (V±):
- -
- -3db Bandwidth:
- 1.6GHz
- Features:
- Bi-Directional, USB 2.0
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-UQFN (1.5x2)
PI3USB221EQ1ZUAEX FAQ
1.How can I place an order for PI3USB221EQ1ZUAEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI3USB221EQ1ZUAEX 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 PI3USB221EQ1ZUAEX reliable?
The price and inventory of PI3USB221EQ1ZUAEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3USB221EQ1ZUAEX is usually 5 days.
3.What payment methods are accepted for PI3USB221EQ1ZUAEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3USB221EQ1ZUAEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI3USB221EQ1ZUAEX?
PI3USB221EQ1ZUAEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI3USB221EQ1ZUAEX 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 PI3USB221EQ1ZUAEX?
For technical support, including PI3USB221EQ1ZUAEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3USB221EQ1ZUAEX requirements.
6.How does Aetrix verify that PI3USB221EQ1ZUAEX is sourced from the original manufacturer or authorized distributors?
All PI3USB221EQ1ZUAEX 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 PI3USB221EQ1ZUAEX meets industry standards.
7.What is the process for return or replacement of PI3USB221EQ1ZUAEX?
All PI3USB221EQ1ZUAEX units undergo pre-shipment inspection (PSI). If there is an issue with PI3USB221EQ1ZUAEX, 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 PI3USB221EQ1ZUAEX part is unused and in its original packaging.
Return procedure for PI3USB221EQ1ZUAEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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