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Diodes Incorporated PI4ULS3V304ZMEX
- Part No.:
- PI4ULS3V304ZMEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
PI4ULS3V304ZMEX.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 12UQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,367
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Product details
Overview
PI4ULS3V304ZMEX from Diodes Incorporated is a 4-bit bidirectional level translator IC for push-pull applications, supporting independent dual-supply operation (VCCA = 0.85–2.7 V, VCCB = 1.35–3.6 V), 140 Mb/s data rate at 2.5–3.6 V/1.8–2.7 V, 100 pF capacitive drive, and 2 kV system-level ESD protection. It enables voltage translation between low-voltage mobile processors (e.g., 1.8 V I/O) and higher-voltage peripherals (e.g., 3.3 V sensors or displays) without direction control pins.
For engineers reviewing the PI4ULS3V304ZMEX datasheet, PI4ULS3V304ZMEX pinout, PI4ULS3V304ZMEX application, or PI4ULS3V304ZMEX equivalent, key selection considerations include autosensing bidirectional operation, non-preferential power-up sequencing, tristate enable control referenced to VCCA, and guaranteed timing performance across 15–100 pF load conditions.
Technical Context
The PI4ULS3V304ZMEX implements an autosensing, one-shot-based bidirectional translation architecture with no direction pin required. Each of its four A/B channel pairs independently detects signal transitions to determine data flow direction in real time, enabling seamless full-duplex communication across mismatched voltage domains.
It features overvoltage-tolerant EN and I/O pins, power-off protection (high-impedance state when either VCCA or VCCB = 0 V), and integrated 3-state control via an active-high EN input referenced to VCCA. Propagation delays are specified from 2.3 ns (min, loaded) to 40 ns (max, 100 pF), with channel-to-channel skew ≤ 0.15 ns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 140 Mb/s - Guaranteed at VCCA = 1.8–2.7 V, VCCB = 2.5–3.6 V, CIO = 15 pF; supports high-speed SPI, I²C, and GPIO bridging. |
| Voltage Range (A port) | 0.85 V to 2.7 V - Enables direct interface with sub-1 V logic (e.g., 0.9 V FPGA I/O) up to 2.7 V microcontrollers. |
| Voltage Range (B port) | 1.35 V to 3.6 V - Compatible with legacy 3.3 V peripherals, USB PHYs, and industrial sensors without level-shifting buffers. |
| Capacitive Drive | 100 pF - Sufficient to drive EMI filters, long PCB traces, or multiple downstream loads without signal degradation. |
| ESD Rating | 2 kV HBM - Meets system-level robustness requirements for handheld and portable electronics per IEC 61000-4-2. |
| Propagation Delay | 2.3–40 ns - Low-latency translation critical for timing-sensitive interfaces like camera sensor control and display timing. |
| Supply Current (Active) | ≤1.5 µA per rail - Ultra-low static consumption ideal for battery-powered devices with extended sleep modes. |
Pinout & Package
Package: UQFN-12 (1.7 mm × 2.0 mm, 0.4 mm pitch, ZMEX suffix denotes Pb-free, green, tape-and-reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VccA | A-port supply rail (0.85–2.7 V); powers all A-side I/O circuitry and EN input reference. |
| 2–5 | A1–A4 | Bidirectional I/O pins referenced to VccA; auto-sense direction on each channel independently. |
| 6 | GND | Common ground reference for both supply domains and internal logic. |
| 7–10 | B4–B1 | Bidirectional I/O pins referenced to VccB; electrically isolated from A-side but functionally paired with A1–A4. |
| 11 | VccB | B-port supply rail (1.35–3.6 V); powers B-side I/O drivers and sensing circuitry. |
| 12 | EN | Active-high enable input (VIH = 2/3×VccA); places all A/B I/Os in high-impedance state when low, reducing total supply current to ≤1 µA. |
Key Features
| Feature | Design Value |
|---|---|
| No direction control pin required | Autosensing one-shot circuitry per channel eliminates external GPIO overhead and routing complexity on dense mobile PCBs. |
| Non-preferential power-up sequencing | VCCA and VCCB may power up in any order; device enters safe high-Z state if either rail is absent - prevents bus contention during boot. |
| Overvoltage-tolerant I/O and EN | I/O pins withstand −0.5 V to +4.6 V (B-side) and −0.5 V to +3.6 V (A-side); EN accepts up to 2.7 V regardless of VCCA, simplifying control from mixed-rail systems. |
| Low bit-to-bit skew | ≤0.15 ns channel-to-channel skew ensures deterministic timing for parallel data buses like memory expansion or multi-lane sensor interfaces. |
| Power-off protection | Automatic high-impedance state when VCCA = 0 V or VCCB = 0 V - isolates powered domains from unpowered ones, preventing back-powering and leakage. |
Applications
| Mobile Application Interface | Wearable Sensor Hub |
|---|---|
|
Use Scenario: Interfacing a 1.8 V application processor to a 3.3 V camera module in a smartphone. IC Role / Device Role / Timing Role: Bidirectional level translator for MIPI CSI-2 clock/data lanes and control signals (I²C, GPIO), maintaining signal integrity at >100 Mb/s. Use Value: Eliminates need for discrete MOSFET translators or direction-controlled buffers, reducing BOM count and PCB area by 40% in space-constrained front-camera modules. |
Use Scenario: Connecting a 0.9 V ultra-low-power MCU to multiple 1.8 V and 3.3 V environmental sensors in a fitness tracker. IC Role / Device Role / Timing Role: Voltage-domain bridge for I²C sensor bus and asynchronous interrupt lines, supporting dynamic voltage scaling across operating modes. Use Value: Enables single-chip integration of heterogeneous sensors without dedicated level-shifting per peripheral, cutting standby current by 2.1 µA vs. discrete solutions. |
| Industrial HMI Display Link | Automotive Infotainment GPIO Expansion |
|
Use Scenario: Translating GPIO and touch controller signals between a 2.5 V display driver IC and a 3.3 V host SoC in a medical panel display. IC Role / Device Role / Timing Role: Push-pull level shifter for bidirectional touch coordinate reporting and display command/status handshaking. Use Value: Guarantees <10 ns propagation delay and <0.15 ns skew across all 4 channels - essential for sub-10 ms touch response latency compliance. |
Use Scenario: Extending 1.2 V automotive microcontroller GPIOs to control 3.3 V LED drivers and CAN transceiver status indicators. IC Role / Device Role / Timing Role: Isolated voltage translator with EN-controlled shutdown for ASIL-B compliant subsystems requiring fail-safe isolation. Use Value: Provides power-off protection and 2 kV ESD immunity - meets ISO 10605 requirements for in-vehicle electronics without additional TVS components. |
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 on B-side; max data rate 60 Mb/s; no OVT on EN pin. | Limited to lower-speed I²C and UART; unsuitable for >100 Mb/s SPI or MIPI interfaces. | Select only if cost sensitivity outweighs speed and robustness requirements; verify pull-up sizing for target VCCB. |
| SN74AVC4T245 | Direction-controlled (DIR pin required); higher static current (10 µA vs. 1.5 µA); no power-off protection. | Needs additional GPIO for direction management; incompatible with autosensing protocols like SDIO or eMMC. | Prefer where deterministic unidirectional flow dominates and board space allows DIR routing; avoid in battery-critical designs. |
Compared with TXS0104E and SN74AVC4T245, the PI4ULS3V304ZMEX delivers higher speed, zero-direction-pin operation, and inherent power sequencing safety - making it optimal for modern mobile and wearable platforms where integration density and power efficiency are primary constraints.
Availability
PI4ULS3V304ZMEX is available at Aetrix Electronics and suitable for mobile phone baseband interfacing, wearable sensor hub integration, and industrial HMI display link applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for PI4ULS3V304ZMEX 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-performance, energy-efficient solutions for consumer, computing, industrial, and automotive markets.
The PI4ULS3V304ZMEX belongs to Diodes' ULS (Ultra-Low Skew) level translation product line, engineered specifically for high-speed, low-power, bidirectional voltage bridging in space- and power-constrained portable electronics.
FAQ
What is the minimum VCCA voltage at which PI4ULS3V304ZMEX guarantees correct logic thresholds?
The device guarantees VIHA ≥ 2/3×VCCA and VILA ≤ 1/3×VCCA down to VCCA = 0.85 V. At VCCA < 1.0 V, input thresholds scale proportionally (VIH min = 0.75×VCCA, VIL max = 0.25×VCCA), ensuring reliable operation even with sub-1 V core logic rails used in advanced mobile SoCs.
Can PI4ULS3V304ZMEX translate between 0.9 V and 3.3 V without external components?
Yes - VCCA supports 0.85–2.7 V and VCCB supports 1.35–3.6 V, so 0.9 V ↔ 3.3 V translation is fully supported within datasheet limits. No pull-ups, resistors, or direction logic are needed; the device auto-senses direction and maintains signal integrity up to 100 pF load at 140 Mb/s under these conditions.
How does the EN pin behave when VCCA is powered but VCCB is off?
When VCCA is present and VCCB = 0 V, the EN pin remains functional (referenced to VCCA), and driving EN low places all A-side I/Os in high-impedance state. B-side pins are inherently high-Z due to missing VCCB - providing complete domain isolation without risk of back-powering or latch-up.
Is PI4ULS3V304ZMEX qualified for automotive temperature range (−40°C to +125°C)?
No - the device is specified for −40°C to +85°C ambient operation. Junction temperature must not exceed 125°C, but extended-temperature qualification (AEC-Q100 Grade 2 or 3) is not claimed. For automotive cabin or engine-bay use, Diodes' automotive-grade PI4ULS3V304QZMEX variant (with −40°C to +125°C rating) is recommended instead.
PI4ULS3V304ZMEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- ULS
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 4
- Voltage - VCCA:
- 0.85 V ~ 2.7 V
- Voltage - VCCB:
- 1.35 V ~ 3.6 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Non-Inverted
- Data Rate:
- 140Mbps
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- Auto-Direction Sensing, Power-Off Protection
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-UFQFN
PI4ULS3V304ZMEX FAQ
1.How can I place an order for PI4ULS3V304ZMEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI4ULS3V304ZMEX 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 PI4ULS3V304ZMEX reliable?
The price and inventory of PI4ULS3V304ZMEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI4ULS3V304ZMEX is usually 5 days.
3.What payment methods are accepted for PI4ULS3V304ZMEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI4ULS3V304ZMEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI4ULS3V304ZMEX?
PI4ULS3V304ZMEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI4ULS3V304ZMEX 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 PI4ULS3V304ZMEX?
For technical support, including PI4ULS3V304ZMEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI4ULS3V304ZMEX requirements.
6.How does Aetrix verify that PI4ULS3V304ZMEX is sourced from the original manufacturer or authorized distributors?
All PI4ULS3V304ZMEX 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 PI4ULS3V304ZMEX meets industry standards.
7.What is the process for return or replacement of PI4ULS3V304ZMEX?
All PI4ULS3V304ZMEX units undergo pre-shipment inspection (PSI). If there is an issue with PI4ULS3V304ZMEX, 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 PI4ULS3V304ZMEX part is unused and in its original packaging.
Return procedure for PI4ULS3V304ZMEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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