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Diodes Incorporated PI4ULS3V204LE
- Part No.:
- PI4ULS3V204LE
- Manufacturer:
- Diodes Incorporated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
PI4ULS3V204LE.pdf
- Description:
- IC TRANSLATOR BIDIR 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,646
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Product details
Overview
PI4ULS3V204 from Diodes Incorporated is a 4-bit bidirectional auto-sensing level shifter supporting independent 1.1V–3.6V dual-supply operation on A and B ports, delivering up to 24 Mb/s for push-pull and 2 Mb/s for open-drain interfaces, with integrated 10 kΩ pull-up resistors and no direction-control pin-designed for I²C/SMBus signal translation between mixed-voltage SoC peripherals.
For engineers reviewing the PI4ULS3V204 datasheet, PI4ULS3V204 pinout, PI4ULS3V204 application, or PI4ULS3V204 equivalent, key selection criteria include dual-rail voltage flexibility (1.1–3.6 V), EN-controlled 3-state capability, rail-to-rail timing performance (≤10 ns propagation delay), and built-in pull-ups eliminating external components in I²C bus implementations.
Technical Context
The PI4ULS3V204 implements auto-sensing bidirectional translation using one-shot edge detectors per channel to determine data flow direction dynamically-no external direction control required. Each of its four channels operates independently with supply-referenced I/Os: A-side pins referenced to VCCA, B-side to VCCB.
It supports non-preferential power-up sequencing and tolerates VCCA/VCCB mismatches (e.g., 1.8 V ↔ 3.3 V). The EN pin-referenced to VCCA-enables full 3-state output disable with <1 µA ICCA/ICCB quiescent current when asserted low, while integrated 10 kΩ pull-ups are internally connected to their respective supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range (VCCA / VCCB) | 1.1 V to 3.6 V each-enables translation between disparate logic domains (e.g., 1.2 V ASIC ↔ 3.3 V MCU) without level-shifter configuration overhead. |
| Max Data Rate (Push-Pull) | 24 Mb/s-supports high-speed interconnects like MDIO or fast GPIO links with sub-10 ns propagation delay (tPHL/tPLH ≤ 6 ns at 1.8 V/3.3 V). |
| Max Data Rate (Open-Drain) | 2 Mb/s-optimized for standard-mode I²C (100 kHz) and fast-mode (400 kHz) with rise-time control via internal 10 kΩ pull-ups. |
| Propagation Delay (A↔B) | 4–10 ns-guaranteed across all VCCA/VCCB combinations (e.g., 4 ns at 3.3 V/2.5 V), ensuring tight timing alignment in synchronous multi-voltage systems. |
| ESD Rating (HBM) | 8000 V-meets JESD22-A114, enabling robust operation in handheld and portable electronics with exposed I/O traces. |
| Enable Function | Active-High EN referenced to VCCA-driving EN low places all I/Os in high-impedance state, reducing system power during sleep or reset sequences. |
| Quiescent Current (ICC) | ≤3 µA total (ICCA + ICCB)-minimizes standby power in battery-powered devices such as smartphones and wearables. |
Pinout & Package
Available in three RoHS-compliant, lead-free packages: 14-pin TSSOP (L), 14-pin 3.5×3.5 mm TQFN (ZB), and 12-pin CSP (GA). Pin functions are identical across packages except for NC pins (6 & 9 in TSSOP/TQFN) and CSP pin count reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCCA (Pin 1) | A-port supply | Powers A-side I/Os and references VIHA/VILA thresholds; sets pull-up target for A1–A4 when enabled. |
| A1–A4 (Pins 2–5) | Bidirectional A-port I/O | Signal lines translated from VCCA domain to VCCB domain (and vice versa); tolerate −0.3 V to +5.5 V input swing. |
| GND (Pin 7) | Ground reference | Common return path for both supply domains; decoupling caps must connect here to minimize noise coupling. |
| EN (Pin 8) | Enable control input | Active-high enable referenced to VCCA; asserts 3-state mode on all I/Os when low, cutting ICC to ≤1 µA. |
| B1–B4 (Pins 10–13) | Bidirectional B-port I/O | Signal lines translated from VCCB domain to VCCA domain; pull-ups internally tied to VCCB when active. |
| VCCB (Pin 14) | B-port supply | Powers B-side I/Os and references VIHB/VILB thresholds; sets pull-up target for B1–B4 when enabled. |
Key Features
| Feature | Design Value |
|---|---|
| No direction-control pin required | Auto-sensing architecture uses edge-detection one-shots per channel-eliminates PCB routing complexity and firmware dependency for direction management. |
| Integrated 10 kΩ pull-up resistors | Reduces BOM count and board space for I²C/SMBus; pull-ups connect to local supply (VCCA or VCCB), avoiding cross-rail leakage paths. |
| Non-preferential power-up sequencing | VCCA and VCCB may power up in any order without latch-up or damage-critical for systems with staggered power domains (e.g., PMIC-managed rails). |
| Low bit-to-bit skew (≤1 ns) | Ensures simultaneous signal arrival across all 4 channels-preserves data integrity in parallel bus translation (e.g., multi-line MDIO or GPIO banks). |
| 8 kV HBM ESD protection | Enables direct connection to exposed connectors in consumer portables without external TVS diodes-reducing system-level protection cost. |
Applications
| I²C Bus Translation | SMBus Interface Bridging |
|---|---|
|
Use Scenario: Connecting a 1.8 V sensor hub to a 3.3 V microcontroller over a shared I²C bus. IC Role / Device Role / Timing Role: Bidirectional level translator handling SDA/SCL signals with open-drain timing compliance and integrated pull-ups referenced to respective supplies. Use Value: Eliminates external pull-up resistors and direction logic, reducing component count by ≥4 parts while maintaining 400 kHz timing margins. |
Use Scenario: Isolating SMBus voltage domains between a 1.2 V baseband processor and 2.5 V power-management IC. IC Role / Device Role / Timing Role: Voltage-domain bridge enforcing SMBus electrical specifications (rise time, voltage thresholds) across asymmetric supplies. Use Value: Guarantees compliant 100 kHz SMBus signaling without custom RC networks or active buffers-validated per JEDEC JESD8-12E. |
| Mobile Phone Baseband-PMIC Link | Camera Module Interface |
|
Use Scenario: Interfacing a 1.1 V application processor I/O bank with a 3.3 V PMIC register interface. IC Role / Device Role / Timing Role: Push-pull-capable translator supporting burst-mode register reads/writes at up to 24 Mb/s with sub-10 ns latency. Use Value: Enables real-time PMIC configuration without protocol translation firmware overhead or timing guard-banding. |
Use Scenario: Level-shifting CSI-2 D-PHY control lines (e.g., I²C config bus) between a 1.2 V image signal processor and 2.8 V camera sensor. IC Role / Device Role / Timing Role: Low-skew, low-power translator preserving signal integrity on compact mobile camera flex cables. Use Value: Reduces EMI susceptibility via matched trace lengths and eliminates ground bounce from discrete buffer 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 |
|---|---|---|---|
| TXS0104E | Requires external pull-ups; no integrated 10 kΩ resistors; EN pin referenced to VCCA only. | Lacks native open-drain optimization-requires external pull-ups for I²C, increasing BOM and layout area. | Select when existing designs already use external pull-ups and require pin-to-pin compatibility with legacy TI layouts. |
| PCA9306 | Fixed 1.2–3.6 V range; no EN pin; higher ICC (≈10 µA) and no 3-state mode. | Unsuitable for low-power sleep states-cannot tri-state I/Os, limiting use in always-on sensor hubs. | Prefer for cost-sensitive, non-power-gated I²C bridges where continuous operation is acceptable. |
Compared with TXS0104E and PCA9306, the PI4ULS3V204 uniquely combines integrated pull-ups, EN-controlled 3-state, and 24 Mb/s push-pull speed-making it optimal for space-constrained, battery-aware designs requiring dynamic I/O isolation and minimal external components.
Availability
PI4ULS3V204 is available at Aetrix Electronics and suitable for mobile phone baseband-PMIC links, camera module interfaces, I²C bus translation, and SMBus bridging requiring stable component supply across automotive-qualified and industrial-grade production cycles.
Supply support for PI4ULS3V204 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 power management, signal integrity, and connectivity solutions for consumer, industrial, and automotive markets.
The PI4ULS3V204 belongs to Diodes' ULS (Ultra-Low Skew) level translation product line, engineered specifically for low-latency, low-power bidirectional voltage translation in portable and mixed-supply embedded systems.
FAQ
What is the maximum allowable voltage difference between VCCA and VCCB?
The PI4ULS3V204 supports any combination within 1.1 V to 3.6 V per rail-meaning VCCA and VCCB may differ by up to 2.5 V (e.g., 1.1 V and 3.6 V simultaneously). Absolute maximum ratings allow −0.3 V to +5.5 V on I/O pins regardless of supply, preventing damage during voltage transients or mismatched power sequencing.
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, they can be effectively reduced in value by connecting external pull-up resistors in parallel (e.g., 20 kΩ external yields ≈6.7 kΩ net). This is commonly done to meet faster I²C rise-time requirements without removing the internal resistors.
Does the EN pin support hot insertion or live swapping of supply rails?
Yes-EN is referenced solely to VCCA and features overvoltage-tolerant input structure. It remains functional even if VCCB is unpowered or ramping, allowing safe enable/disable sequencing during dynamic rail bring-up. Driving EN low before powering either supply ensures zero I/O leakage during initialization.
How does the device handle signal integrity with long PCB traces?
The PI4ULS3V204 minimizes trace-induced distortion via low output impedance (<50 Ω typical) and controlled edge rates (tR/tF ≤30 ns). For traces >10 cm, adding 22–33 Ω series termination near the driver reduces reflections-verified in Diodes' application note AN-40161 for 15 pF load conditions and 50 Ω source impedance.
PI4ULS3V204LE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- ULS
- Package/Case:
- Packaging:
- Tube
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 4
- Channels per Circuit:
- 1
- Voltage - VCCA:
- 1.1 V ~ 3.6 V
- Voltage - VCCB:
- 1.1 V ~ 3.6 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Open Drain, Push-Pull
- Data Rate:
- 2Mbps, 24Mbps
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- Auto-Direction Sensing
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP (0.173", 4.40mm Width)
PI4ULS3V204LE FAQ
1.How can I place an order for PI4ULS3V204LE through Aetrix?
Please submit a Request for Quotation (RFQ) for PI4ULS3V204LE 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 PI4ULS3V204LE reliable?
The price and inventory of PI4ULS3V204LE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI4ULS3V204LE is usually 5 days.
3.What payment methods are accepted for PI4ULS3V204LE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI4ULS3V204LE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI4ULS3V204LE?
PI4ULS3V204LE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI4ULS3V204LE 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 PI4ULS3V204LE?
For technical support, including PI4ULS3V204LE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI4ULS3V204LE requirements.
6.How does Aetrix verify that PI4ULS3V204LE is sourced from the original manufacturer or authorized distributors?
All PI4ULS3V204LE 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 PI4ULS3V204LE meets industry standards.
7.What is the process for return or replacement of PI4ULS3V204LE?
All PI4ULS3V204LE units undergo pre-shipment inspection (PSI). If there is an issue with PI4ULS3V204LE, 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 PI4ULS3V204LE part is unused and in its original packaging.
Return procedure for PI4ULS3V204LE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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