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Diodes Incorporated PI4ULS5V202UE
- Part No.:
- PI4ULS5V202UE
- Manufacturer:
- Diodes Incorporated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
PI4ULS5V202UE.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,609
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Product details
Overview
PI4ULS5V202 from Diodes Incorporated is a 2-bit bidirectional auto-sensing level shifter with dual independent supply rails (VCCA and VCCB), integrated 10 kΩ pull-up resistors, 20 Mb/s push-pull data rate, and operation across 1.2 V to 5.5 V on both ports-designed for I²C/SMBus voltage translation between mixed-voltage ASICs in mobile phones and camera modules.
For engineers reviewing the PI4ULS5V202 datasheet, PI4ULS5V202 pinout, PI4ULS5V202 application, or PI4ULS5V202 equivalent, this device supports rail-to-rail bidirectional logic translation without direction control, offers ultra-low power consumption (≤5 µA quiescent current), and delivers sub-20 ns propagation delay with <5 ns part-to-part skew in push-pull mode.
Technical Context
The PI4ULS5V202 implements auto-sensing one-shot circuitry per channel to detect signal transitions and dynamically determine data flow direction-eliminating external direction-control logic. Each channel operates independently with dual-supply referencing: A-port I/Os referenced to VCCA (1.2–5.5 V), B-port I/Os to VCCB (1.2–5.5 V).
It supports both push-pull (20 Mb/s) and open-drain (2 Mb/s) configurations, with integrated 10 kΩ pull-ups configurable to either supply rail. The EN pin enables tri-state output mode with 0.1 µA leakage in disable state, and non-preferential power-up sequencing ensures robustness across arbitrary VCCA/VCCB ramp orders.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA / VCCB Range | 1.2 V to 5.5 V each-enables translation between disparate logic families (e.g., 1.8 V MCU ↔ 3.3 V sensor) |
| Max Data Rate | 20 Mb/s (push-pull), 2 Mb/s (open-drain)-supports high-speed I²C Fast-mode Plus and SMBus applications |
| Propagation Delay | ≤20 ns (tPHL/tPLH)-ensures timing compliance in 25 MHz clock domains with margin |
| Part-to-Part Skew | ≤5 ns-maintains signal integrity across dual-channel I²C SDA/SCL pairs |
| Supply Current (IQ) | ≤5.0 µA per supply-minimizes standby power in battery-powered portable devices |
| ESD Rating | 8 kV HBM-meets industrial I/O robustness requirements without external protection |
| Pull-Up Resistance | 10 kΩ internal-reduces BOM count for I²C bus termination; parallel external resistors adjust effective value |
Pinout & Package
Available in two ultra-compact packages: 8-pin MSOP (U, 3.0 × 3.0 mm) and 8-pin UDFN (XV, 1.2 × 1.6 mm). Both are RoHS-compliant, halogen-free, and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VCCA | Power input | A-port supply rail-sets logic threshold and powers internal A-side circuitry |
| 2 A1 | I/O bidirectional | Channel 1 A-side signal-auto-senses direction and references to VCCA |
| 3 A2 | I/O bidirectional | Channel 2 A-side signal-fully independent of A1; supports dual I²C lines |
| 4 GND | Ground reference | Common return path for both supplies and I/Os-must be low-impedance |
| 5 EN | Digital control input | Active-high enable-driving low places all I/Os in high-impedance tri-state mode |
| 6 B2 | I/O bidirectional | Channel 2 B-side signal-references to VCCB; translates to/from A2 automatically |
| 7 B1 | I/O bidirectional | Channel 1 B-side signal-translates to/from A1 without direction pin or timing overhead |
| 8 VCCB | Power input | B-port supply rail-sets B-side logic levels and powers B-side circuitry |
Key Features
| Feature | Design Value |
|---|---|
| No direction-control pin required | Auto-sensing one-shot circuitry per channel detects edge direction in real time-reducing PCB routing complexity and firmware overhead |
| Independent dual-supply operation | VCCA and VCCB configurable 1.2–5.5 V each-enables asymmetric translation (e.g., 1.2 V FPGA ↔ 5.5 V analog front-end) |
| Integrated 10 kΩ pull-up resistors | Eliminates four external resistors for standard I²C bus termination-reducing component count and board area |
| Non-preferential power-up sequencing | VCCA and VCCB may power up in any order-prevents latch-up or undefined states during system startup |
| Ultra-low quiescent current | ≤0.5 µA in tri-state (EN = low)-extends battery life in always-on sensor nodes and wearables |
Applications
| I²C Bus Translation | SMBus Interface Bridging |
|---|---|
Use Scenario: Interfacing a 1.8 V microcontroller I²C master with a 3.3 V temperature sensor in a smartphone camera module. IC Role / Device Role / Timing Role: Bidirectional level translator for SDA/SCL lines-maintaining I²C timing budgets while isolating voltage domains. Use Value: Eliminates need for discrete MOSFET translators and external pull-ups, reducing solution size by >40% and BOM cost by $0.08/unit. | Use Scenario: Connecting a 5.0 V SMBus host controller to 1.2 V DDR5 memory power management ICs in a server DIMM. IC Role / Device Role / Timing Role: Voltage-level bridge enabling SMBus packet exchange across incompatible supply rails without protocol modification. Use Value: Supports 100 kHz SMBus timing with <5 ns inter-channel skew-ensuring reliable PMBus command execution under thermal stress. |
| Mobile Baseband-Application Processor Link | Low-Voltage ASIC Interfacing |
Use Scenario: Level-shifting GPIO and reset signals between a 1.2 V baseband SoC and 2.8 V application processor in a feature phone. IC Role / Device Role / Timing Role: Dual-channel translator handling asynchronous control signals-EN pin synchronizes interface shutdown during sleep mode. Use Value: Enables coordinated power gating with <1 µA leakage in disabled state-extending standby battery life beyond 14 days. | Use Scenario: Translating debug interface (JTAG/SWD) signals between a 3.3 V debugger probe and 1.5 V IoT SoC during production test. IC Role / Device Role / Timing Role: Signal integrity-preserving translator supporting 10 MHz SWD clock with sub-20 ns round-trip delay. Use Value: Maintains JTAG TCK setup/hold margins across voltage domains-reducing test escape rate by 99.9% vs. resistor-based solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0102DCUR | Requires external pull-ups; no integrated 10 kΩ resistors; 1.65–5.5 V range only | Lacks native I²C open-drain support-requires external FETs for true bus arbitration | Select when external resistor tuning is needed or when legacy layout re-use mandates SOIC-8 footprint |
| NLVM2202MUTAG | Fixed 1.8 V/3.3 V dual-rail; no VCCA/VCCB flexibility; 10 Mb/s max data rate | Not suitable for 1.2 V or 5.5 V systems-limited to narrow voltage combinations | Choose only for cost-sensitive consumer applications where rail combinations are fixed and speed ≤10 Mb/s suffices |
Compared with TXS0102DCUR and NLVM2202MUTAG, the PI4ULS5V202 provides broader voltage coverage (1.2–5.5 V), integrated pull-ups, higher speed (20 Mb/s), and superior skew performance-making it optimal for compact, multi-rail I²C systems where BOM reduction and timing margin are critical.
Availability
PI4ULS5V202 is available at Aetrix Electronics and suitable for mobile phone design, camera module integration, and SMBus-based server power management requiring stable component supply and long-term lifecycle assurance.
Supply support for PI4ULS5V202 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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The PI4ULS5V202 belongs to Diodes' Pericom® interface product line, engineered specifically for high-integrity, low-power voltage translation in space-constrained portable and communications equipment.
FAQ
What is the minimum operating voltage for VCCA and VCCB?
The PI4ULS5V202 supports VCCA and VCCB down to 1.2 V each-verified across −40°C to +85°C ambient temperature. Operation below 1.2 V is not guaranteed and may result in undefined logic thresholds or increased propagation delay. This 1.2 V lower limit enables compatibility with advanced low-voltage ASICs and battery-powered sensors.
Can the PI4ULS5V202 be used without external pull-up resistors on an I²C bus?
Yes-the device integrates 10 kΩ pull-up resistors on all four I/O pins (A1, A2, B1, B2), referenced to their respective supply rails (VCCA or VCCB). These are sufficient for standard-mode (100 kHz) and fast-mode (400 kHz) I²C buses with typical bus capacitance (<400 pF); no external resistors are required unless faster timing or stronger drive is needed.
How does the EN pin affect power consumption and signal behavior?
When EN is driven low, all I/O pins enter high-impedance tri-state mode with ≤1 µA leakage current per port, and supply currents drop to ≤0.1 µA (ITS−VCCA/VCCB). This enables complete isolation of the I²C bus during system sleep-critical for ultra-low-power wearable and IoT designs-while preserving voltage domain separation.
Is the PI4ULS5V202 qualified for automotive applications?
No-the PI4ULS5V202 is not AEC-Q100 qualified. Diodes Incorporated explicitly states that automotive-grade versions require specific change control, PPAP capability, and IATF 16949 manufacturing-none of which apply to this commercial-grade part. For automotive use, contact Diodes directly for qualified alternatives such as the PI4ULS5V202Q series.
PI4ULS5V202UE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- ULS
- Package/Case:
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- Auto-Direction Sensing
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UFDFN
PI4ULS5V202UE FAQ
1.How can I place an order for PI4ULS5V202UE through Aetrix?
Please submit a Request for Quotation (RFQ) for PI4ULS5V202UE 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 PI4ULS5V202UE reliable?
The price and inventory of PI4ULS5V202UE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI4ULS5V202UE is usually 5 days.
3.What payment methods are accepted for PI4ULS5V202UE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI4ULS5V202UE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI4ULS5V202UE?
PI4ULS5V202UE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI4ULS5V202UE 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 PI4ULS5V202UE?
For technical support, including PI4ULS5V202UE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI4ULS5V202UE requirements.
6.How does Aetrix verify that PI4ULS5V202UE is sourced from the original manufacturer or authorized distributors?
All PI4ULS5V202UE 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 PI4ULS5V202UE meets industry standards.
7.What is the process for return or replacement of PI4ULS5V202UE?
All PI4ULS5V202UE units undergo pre-shipment inspection (PSI). If there is an issue with PI4ULS5V202UE, 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 PI4ULS5V202UE part is unused and in its original packaging.
Return procedure for PI4ULS5V202UE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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