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Diodes Incorporated PI4ULS3V204GAEX
- Part No.:
- PI4ULS3V204GAEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
PI4ULS3V204GAEX.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 12CSP
- Quantity:
- Payment:
- Shipping:
Inventory:8,311
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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 supplies on A and B ports, delivering up to 24 Mb/s for push-pull and 2 Mb/s for open-drain I²C/SMBus interfaces, with integrated 10 kΩ pull-up resistors and no direction-control pin required - deployed in mobile phone baseband-PMIC interconnects.
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 tri-state capability, rail-to-rail timing performance (≤10 ns propagation delay), and native open-drain compatibility for I²C bus translation.
Technical Context
The PI4ULS3V204 implements auto-sensing bidirectional translation using one-shot edge detectors per channel to determine signal flow direction without external control logic. Each I/O pair operates independently, referenced to its respective supply (VCCA or VCCB), enabling asymmetric voltage translation in either direction.
It integrates 10 kΩ pull-up resistors on all I/O lines, configurable to pull toward VCCA or VCCB depending on active side, and features overvoltage-tolerant EN input referenced to VCCA with 200 ns enable/disable timing. Power sequencing is non-preferential - VCCA and VCCB may power up in any order without latch-up or damage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA / VCCB Range | 1.1 V to 3.6 V each - enables mixed-voltage SoC-to-peripheral interfacing (e.g., 1.8 V FPGA ↔ 3.3 V sensor) |
| Max Data Rate | 24 Mb/s (push-pull), 2 Mb/s (open-drain) - supports full-speed I²C (400 kHz) and fast-mode plus (1 MHz) with margin |
| Propagation Delay | 4–11 ns (A↔B) - ensures sub-25 ns round-trip latency critical for real-time peripheral handshaking |
| Integrated Pull-up | 10 kΩ per I/O - eliminates external resistors for standard I²C bus termination, reducing BOM count and PCB area |
| EN Control | Active-high, VCCA-referenced - allows system-level power gating of translation path during sleep modes without level-shifting the control signal |
| ESD Rating | 8000 V HBM - meets industrial I/O robustness requirements without external protection circuitry |
| Supply Current | ≤3 µA (ICC total) - supports ultra-low-power always-on sensor hubs and battery-backed subsystems |
Pinout & Package
PI4ULS3V204GAEX uses a 12-pin wafer-level chip-scale package (CSP), 1.37 mm × 1.87 mm, with 0.4 mm pitch and bottom-side ball array. Pin mapping is validated per Diodes DS40161 Rev 4-2 (July 2021).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| B1–B4 | I/O (B-port) | Bidirectional signals referenced to VCCB; auto-sense direction during data transfer |
| A1–A4 | I/O (A-port) | Bidirectional signals referenced to VCCA; electrically isolated from B-port by internal translator core |
| VCCA | Power (A-side) | Supplies A-port logic and internal sensing circuitry; sets HIGH/LOW thresholds for A-side inputs |
| VCCB | Power (B-side) | Supplies B-port logic and pull-up reference; defines output swing and input thresholds for B-side |
| GND | Ground | Common return for both supply domains; must be low-impedance to minimize ground bounce across voltage domains |
| EN | Enable Input | Tri-states all I/Os when low; referenced to VCCA, tolerant to VCCB overvoltage during mixed-rail power sequencing |
Key Features
| Feature | Design Value |
|---|---|
| No direction-control pin | Eliminates MCU GPIO overhead and routing complexity in space-constrained mobile PCBs |
| Non-preferential power-up | Prevents initialization faults in systems where VCCA/VCCB rails ramp at different rates (e.g., PMIC sequencing) |
| Low bit-to-bit skew | ≤1 ns skew across all 4 channels ensures deterministic timing for parallel data buses like MDIO |
| Integrated 10 kΩ pull-ups | Reduces external component count by 8 resistors in typical I²C implementations, improving assembly yield |
| 1.1 V minimum supply | Supports next-gen ultra-low-voltage I/O standards (e.g., 1.2 V LPDDR I/O, 1.1 V AI accelerator interfaces) |
Applications
| I²C Bus Translation | Mobile Baseband–PMIC Interface |
|---|---|
Use Scenario: Interfacing a 1.8 V application processor I²C controller with a 3.3 V power management IC in a smartphone. IC Role / Device Role / Timing Role: Bidirectional voltage translator enabling clock/data signal level shifting without direction control or external pull-ups. Use Value: Reduces interconnect BOM by 8 resistors and eliminates software-driven GPIO toggling for direction management. |
Use Scenario: Connecting a 1.2 V sensor hub MCU to a 2.5 V display driver IC via SMBus in a wearable device. IC Role / Device Role / Timing Role: Auto-sensing level shifter maintaining <10 ns propagation delay to preserve SMBus timing margins under dynamic voltage scaling. Use Value: Enables reliable communication across three distinct voltage domains while meeting 85°C operating temperature requirement. |
| MDIO Interface Bridging | Low-Voltage ASIC Interconnect |
Use Scenario: Translating MDIO signals between a 2.5 V Ethernet PHY and a 1.1 V network switch ASIC in compact networking equipment. IC Role / Device Role / Timing Role: 4-bit bidirectional translator with ≤1 ns part-to-part skew ensuring deterministic MDIO register access timing. Use Value: Guarantees IEEE 802.3 compliance for MDIO read/write cycles without added timing uncertainty. |
Use Scenario: Level-shifting debug interface signals (JTAG/SWD) between a 3.3 V host debugger and a 1.8 V secure enclave ASIC. IC Role / Device Role / Timing Role: EN-controlled tri-state translator allowing safe hot-plug debugging without disturbing target power domain. Use Value: Prevents back-powering of the 1.8 V domain during debugger attachment and supports <1 µA standby current. |
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-up resistors; no integrated 10 kΩ pull-ups; EN pin referenced to VCCIO | Lacks native open-drain optimization; higher external component count for I²C | Preferred only when board layout requires separate pull-up voltage control or when VCCIO ≠ VCCA/VCCB |
| PCA9306 | Fixed 1.2–3.3 V range; no support below 1.2 V; no EN pin; higher ICC (10 µA typical) | Not suitable for 1.1 V systems or power-gated translation paths | Select only for legacy designs already using PCA9306 footprint and where 1.1 V operation is unnecessary |
Compared with TXS0104E and PCA9306, the PI4ULS3V204 uniquely combines 1.1 V minimum supply, integrated pull-ups, and EN-controlled tri-state - making it optimal for ultra-low-voltage, low-BOM-count, and power-aware I²C/SMBus designs.
Availability
PI4ULS3V204 is available at Aetrix Electronics and suitable for mobile phone design, automotive infotainment subsystems, and industrial IoT sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
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 semiconductor company specializing in discrete, analog, and mixed-signal devices, with design centers across Asia, Europe, and the U.S., serving industrial, computing, consumer, and automotive markets.
The PI4ULS3V204 belongs to Diodes' Pericom® high-speed interface product line, engineered specifically for low-latency, low-power bidirectional voltage translation in portable and battery-operated electronics.
FAQ
What is the minimum operating voltage for VCCA and VCCB?
The PI4ULS3V204 supports 1.1 V minimum on both VCCA and VCCB rails, verified per DS40161 Rev 4-2 Section 6.2. This enables direct interfacing with emerging ultra-low-voltage logic families such as 1.2 V LPDDR4 I/O and sub-1.2 V AI accelerators without external voltage boosting.
Can the PI4ULS3V204 be used without external pull-up resistors in I²C applications?
Yes - the device integrates 10 kΩ pull-up resistors on all eight I/O lines (A1–A4, B1–B4), fully compliant with standard-mode (100 kHz) and fast-mode (400 kHz) I²C bus requirements per NXP UM10204. No external pull-ups are needed unless faster rise times or multi-master arbitration demand lower resistance.
How does the EN pin behave during mixed-rail power sequencing?
The EN pin is referenced to VCCA and tolerates voltages up to 5.5 V regardless of VCCB state. When VCCA is unpowered, EN is inactive and all I/Os remain in high-impedance - preventing back-driving or contention during staggered power-up of VCCA and VCCB rails in complex PMIC architectures.
Is the PI4ULS3V204GAEX RoHS-compliant and halogen-free?
Yes - PI4ULS3V204GAEX is fully RoHS 3 compliant (2015/863/EU), lead-free, and halogen- and antimony-free per Diodes' "Green" definition: Br < 900 ppm, Cl < 900 ppm (Br+Cl < 1500 ppm), Sb < 1000 ppm. Certification is documented in Diodes' quality portal and packaging datasheets.
PI4ULS3V204GAEX 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:
- 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:
- 12-UFBGA, CSPBGA
PI4ULS3V204GAEX FAQ
1.How can I place an order for PI4ULS3V204GAEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI4ULS3V204GAEX 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 PI4ULS3V204GAEX reliable?
The price and inventory of PI4ULS3V204GAEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI4ULS3V204GAEX is usually 5 days.
3.What payment methods are accepted for PI4ULS3V204GAEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI4ULS3V204GAEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI4ULS3V204GAEX?
PI4ULS3V204GAEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI4ULS3V204GAEX 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 PI4ULS3V204GAEX?
For technical support, including PI4ULS3V204GAEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI4ULS3V204GAEX requirements.
6.How does Aetrix verify that PI4ULS3V204GAEX is sourced from the original manufacturer or authorized distributors?
All PI4ULS3V204GAEX 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 PI4ULS3V204GAEX meets industry standards.
7.What is the process for return or replacement of PI4ULS3V204GAEX?
All PI4ULS3V204GAEX units undergo pre-shipment inspection (PSI). If there is an issue with PI4ULS3V204GAEX, 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 PI4ULS3V204GAEX part is unused and in its original packaging.
Return procedure for PI4ULS3V204GAEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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