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Diodes Incorporated PI4ULS5V202Q1UEX
- Part No.:
- PI4ULS5V202Q1UEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
PI4ULS5V202Q1UEX.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,898
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Product details
Overview
PI4ULS5V202Q1UEX from Diodes Incorporated is an automotive-qualified 2-bit bidirectional auto-sensing level shifter with dual supply rails (VCCA and VCCB), integrated 10 kΩ pull-up resistors, AEC-Q100 Grade 1 qualification (−40°C to +125°C), and support for 1.2 V to 5.5 V on both ports. It enables I²C/SMBus voltage translation between disparate logic domains in automotive body control modules.
For engineers reviewing the PI4ULS5V202Q1UEX datasheet, PI4ULS5V202Q1UEX pinout, PI4ULS5V202Q1UEX application, or PI4ULS5V202Q1UEX equivalent, key selection criteria include its automatic direction sensing, open-drain vs. push-pull data rate trade-offs (2 Mb/s vs. 20 Mb/s), EN-controlled tri-state capability, and integrated pull-up resistor value.
Technical Context
The PI4ULS5V202Q1UEX implements a dual-rail, auto-sensing architecture using one-shot edge detectors per channel to determine signal direction without external control. Each I/O pair (A1/B1 and A2/B2) operates independently, translating logic levels between VCCA and VCCB supplies that may differ by up to 4.3 V.
It supports rail-to-rail push-pull operation at up to 20 Mbps with ≤15 ns propagation delay and ≤5 ns part-to-part skew, while open-drain configurations (e.g., I²C) operate at up to 2 Mbps with rise times up to 450 ns due to internal 10 kΩ pull-ups - configurable via external parallel resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA / VCCB Range | 1.2 V to 5.5 V each - enables flexible interconnection of mixed-voltage subsystems (e.g., 1.8 V MCU ↔ 3.3 V sensor) |
| Max Data Rate | 20 Mbps (push-pull), 2 Mbps (open-drain) - matches high-speed UART and legacy I²C timing budgets |
| Propagation Delay | ≤15 ns (A↔B) - ensures timing compliance in sub-50 ns critical paths |
| Part-to-Part Skew | ≤5 ns - maintains signal integrity across dual-channel data buses |
| Integrated Pull-Up | 10 kΩ per I/O - eliminates external resistors for I²C/SMBus, reducing BOM count and PCB area |
| Enable Function | Active-high EN referenced to VCCA - allows system-level power gating with <1 µA tri-state leakage |
| ESD Rating | 8 kV HBM - meets automotive board-level ESD robustness requirements per ISO 10605 |
Pinout & Package
Package: MSOP-8 (U), ultra-compact 3 mm × 3 mm footprint with 0.65 mm pitch - optimized for space-constrained automotive ECUs and ADAS modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VCCA | A-port supply rail | Power reference for A-side I/Os; must be stable within 1.2–5.5 V; decoupling capacitor required |
| 2 A1 | Bidirectional I/O (A-side) | Auto-sensing channel 1 input/output referenced to VCCA; connects to low-voltage ASIC or MCU GPIO |
| 3 A2 | Bidirectional I/O (A-side) | Auto-sensing channel 2 input/output referenced to VCCA; shares same VCCA domain as A1 |
| 4 GND | Ground reference | Common return path for both supply rails; requires low-inductance PCB connection to minimize noise coupling |
| 5 EN | Enable control input | Active-high enable referenced to VCCA; drives all I/Os into high-impedance state when low |
| 6 B2 | Bidirectional I/O (B-side) | Auto-sensing channel 2 input/output referenced to VCCB; interfaces with higher-voltage peripherals (e.g., 5 V sensors) |
| 7 B1 | Bidirectional I/O (B-side) | Auto-sensing channel 1 input/output referenced to VCCB; electrically isolated from A-side except through translation logic |
| 8 VCCB | B-port supply rail | Power reference for B-side I/Os; independent of VCCA; supports non-monotonic power sequencing |
Key Features
| Feature | Design Value |
|---|---|
| No direction-control pin required | Reduces MCU GPIO usage and eliminates firmware timing dependencies for bidirectional bus arbitration |
| Non-preferential power-up sequencing | Allows VCCA and VCCB to power up in any order without latch-up or damage - simplifies power management design |
| Integrated 10 kΩ pull-up resistors | Eliminates four external resistors for I²C applications, saving >1.5 mm² PCB area and improving assembly yield |
| AEC-Q100 Grade 1 qualification | Validated for continuous operation at −40°C to +125°C ambient - suitable for under-hood and cabin ECU deployment |
| Low bit-to-bit skew (≤5 ns) | Preserves timing alignment between dual-channel signals in synchronized sensor interfaces or dual-data-line protocols |
Applications
| I²C Bus Level Translation | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Interfacing a 1.8 V microcontroller I²C port with 3.3 V or 5 V automotive sensors (e.g., ambient light, door lock status). IC Role / Device Role / Timing Role: Bidirectional voltage translator enabling protocol-compliant communication across voltage domains without clock stretching or bus contention. Use Value: Eliminates need for discrete MOSFET-based translators and external pull-ups, reducing component count by ≥6 parts and layout complexity. | Use Scenario: Signal bridging between 2.5 V CAN transceiver monitoring logic and 5 V dashboard display controller in centralized BCM architecture. IC Role / Device Role / Timing Role: Dual-channel level shifter providing isolated, skew-controlled data paths for diagnostic and status reporting lines. Use Value: Enables deterministic timing (<15 ns delay, <5 ns skew) for real-time fault reporting while meeting AEC-Q100 thermal and reliability requirements. |
| MDIO Interface Translation | Automotive Camera Module Interface |
Use Scenario: Connecting a 1.2 V Ethernet PHY MDIO management interface to a 2.8 V automotive switch controller in infotainment gateway units. IC Role / Device Role / Timing Role: Auto-sensing bidirectional translator handling MDIO's open-drain signaling at ≤2 Mbps with integrated pull-ups. Use Value: Maintains IEEE 802.3 MDIO electrical compliance while removing external biasing components and simplifying layout routing. | Use Scenario: Bridging 1.8 V image sensor serial control (SCCB/I²C) lines to 3.3 V camera ECU processor in rear-view or surround-view systems. IC Role / Device Role / Timing Role: Dual-channel level shifter supporting hot-plug detection and configuration reads during camera initialization sequence. Use Value: Guarantees reliable startup under varying supply ramp rates due to non-preferential power sequencing and robust ESD protection (8 kV HBM). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP PCA9306DCUR | Non-automotive grade; no AEC-Q100 qualification; max VCC range 5.5 V/3.6 V; no integrated pull-ups | Suitable only for consumer or industrial designs without temperature or reliability requirements | Select if cost sensitivity outweighs automotive qualification and external pull-up resistors are acceptable |
| Texas Instruments TXS0102RGTR | Automotive-qualified (AEC-Q100 Grade 2); 1.65–3.6 V VCCA/VCCB range; no integrated pull-ups; 60 Mbps max data rate | Limited to narrower voltage range; higher speed but requires external biasing for I²C | Select for higher-speed applications where VCCA/VCCB ≤3.6 V and external resistors are tolerable |
Compared with PCA9306DCUR and TXS0102RGTR, the PI4ULS5V202Q1UEX uniquely combines AEC-Q100 Grade 1 qualification, full 1.2–5.5 V dual-rail flexibility, integrated 10 kΩ pull-ups, and ultra-small MSOP-8 packaging - making it optimal for space- and reliability-critical automotive I²C/SMBus bridges.
Availability
PI4ULS5V202Q1UEX is available at Aetrix Electronics and suitable for automotive body control modules, camera interface subsystems, and infotainment gateway designs requiring stable component supply, AEC-Q100 compliance, and compact packaging.
Supply support for PI4ULS5V202Q1UEX 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 analog ICs, specializing in high-reliability solutions for automotive, industrial, and computing markets.
The PI4ULS5V202Q1UEX belongs to Diodes' automotive-qualified level translation product line, designed specifically for robust, low-footprint voltage bridging in safety-critical vehicle subsystems operating across wide temperature ranges.
FAQ
What is the maximum allowable voltage difference between VCCA and VCCB?
The PI4ULS5V202Q1UEX supports VCCA and VCCB independently from 1.2 V to 5.5 V, allowing up to a 4.3 V differential (e.g., VCCA = 1.2 V, VCCB = 5.5 V). This is validated per datasheet AC/DC specifications and does not require derating under normal operating conditions.
Can the internal 10 kΩ pull-up resistors be disabled or bypassed?
No - the 10 kΩ pull-ups are permanently integrated and cannot be disabled. However, their effective value can be reduced by connecting external resistors in parallel (e.g., 20 kΩ external yields ~6.7 kΩ net), which adjusts rise time for open-drain applications like I²C.
Does the EN pin support voltage levels beyond VCCA?
Yes - the EN pin is overvoltage tolerant up to 5.5 V regardless of VCCA level, as confirmed in the "Enable Input" section of the datasheet. This allows direct interfacing with higher-voltage control signals without level-shifting circuitry.
Is there a recommended PCB layout practice for minimizing noise coupling?
Place 0.01 μF to 0.1 μF ceramic decoupling capacitors as close as possible to pins 1 (VCCA) and 8 (VCCB), with short, low-inductance traces to pin 4 (GND). Avoid routing high-speed signals adjacent to VCCA/VCCB traces, and use solid ground plane beneath the MSOP-8 footprint to suppress supply noise.
PI4ULS5V202Q1UEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- ULS
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 2
- Voltage - VCCA:
- 1.2 V ~ 5.5 V
- Voltage - VCCB:
- 1.2 V ~ 5.5 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State, Non-Inverted
- Data Rate:
- 20Mbps
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
PI4ULS5V202Q1UEX FAQ
1.How can I place an order for PI4ULS5V202Q1UEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI4ULS5V202Q1UEX 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 PI4ULS5V202Q1UEX reliable?
The price and inventory of PI4ULS5V202Q1UEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI4ULS5V202Q1UEX is usually 5 days.
3.What payment methods are accepted for PI4ULS5V202Q1UEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI4ULS5V202Q1UEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI4ULS5V202Q1UEX?
PI4ULS5V202Q1UEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI4ULS5V202Q1UEX 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 PI4ULS5V202Q1UEX?
For technical support, including PI4ULS5V202Q1UEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI4ULS5V202Q1UEX requirements.
6.How does Aetrix verify that PI4ULS5V202Q1UEX is sourced from the original manufacturer or authorized distributors?
All PI4ULS5V202Q1UEX 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 PI4ULS5V202Q1UEX meets industry standards.
7.What is the process for return or replacement of PI4ULS5V202Q1UEX?
All PI4ULS5V202Q1UEX units undergo pre-shipment inspection (PSI). If there is an issue with PI4ULS5V202Q1UEX, 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 PI4ULS5V202Q1UEX part is unused and in its original packaging.
Return procedure for PI4ULS5V202Q1UEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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