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Diodes Incorporated PI4ULS3V08ZFE
- Part No.:
- PI4ULS3V08ZFE
- Manufacturer:
- Diodes Incorporated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
PI4ULS3V08ZFE.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 36TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,565
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Product details
Overview
PI4ULS3V08ZFE from Diodes Incorporated (acquired Pericom Semiconductor) is an 8-bit universal bidirectional voltage-level translator with automatic direction control, supporting independent 1.2V–3.6V operation on both A and B ports. It enables asynchronous data exchange between mismatched voltage domains (e.g., 1.8V ↔ 3.3V), delivers up to 180 Mbps push-pull bus speed, provides ±12 mA drive capability per I/O, and operates across –40°C to +85°C for industrial mobile and embedded interconnect applications.
For engineers reviewing the PI4ULS3V08ZFE datasheet, PI4ULS3V08ZFE pinout, PI4ULS3V08ZFE application, or PI4ULS3V08ZFE equivalent, key selection considerations include dual-rail supply flexibility, automatic direction sensing without external control lines, output impedance selection (300 Ω / 2.2 kΩ), test mode enablement, and TQFN-36 package thermal performance in space-constrained designs.
Technical Context
The PI4ULS3V08ZFE implements a dual-supply, gate-controlled MOSFET-based translation architecture with independent A-port (VCCA) and B-port (VCCB) rails. Each of the eight bidirectional channels operates autonomously, with real-time direction detection based on relative voltage transitions at AX/BX terminals - eliminating need for dedicated DIR pins.
It integrates configurable output impedance (via OUT_SEL), test-mode routing (via TEST_EN), and loading-selectable outputs (via xSEL), all powered from VCCB. The device enters high-impedance isolation when OE is asserted high, and supports simultaneous A→B and B→A traffic with automatic bus arbitration and tri-state resolution during contention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | VCCA and VCCB independently configurable from 1.2 V to 3.6 V - enables mixed-voltage system bridging without level-shifting resistors or external logic. |
| Max Data Rate | 180 Mbps in push-pull configuration - supports high-speed interfaces like SDIO, eMMC, I²C fast-mode+, and low-voltage parallel buses. |
| Drive Strength | ±12 mA per I/O at VCCO = 3.0 V - ensures robust signal integrity into 50 pF loads with <7 ns propagation delay (A↔B). |
| ESD Protection | 2000 V HBM, 200 V MM - meets industrial reliability requirements without external protection components. |
| Operating Temp | –40°C to +85°C - qualified for automotive infotainment, industrial HMIs, and portable electronics ambient environments. |
| Output Impedance | Selectable 300 Ω (low-Z) or 2.2 kΩ (high-Z) via OUT_SEL - allows optimization for signal integrity vs. power consumption in noise-sensitive layouts. |
Pinout & Package
Package: 36-contact TQFN (5 mm × 6 mm, 0.5 mm pitch, exposed thermal pad). Compact footprint supports high-density PCB routing and efficient thermal dissipation in handheld and wearable devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| xOE (e.g., AOE, BOE) | Active-low 3-state output enable | Asserting high disables all associated port outputs (A or B), isolating buses during power sequencing or standby. |
| xSEL (e.g., ASEL, BSEL) | Output loading selection control | Configures capacitive load drive strength: CL ≤ 10 pF to 50 pF - adjusts slew rate and EMI for specific trace lengths. |
| xAx / xBx (A0–A7, B0–B7) | Bidirectional data I/O | Auto-directional channel pairs - no external DIR signal needed; direction inferred from voltage transition sequence on either side. |
| TEST_EN | Test mode enable input | Activates internal diagnostic paths for A→B or B→A forced translation - used in production testing and boundary-scan validation. |
| OUT_SEL | Output impedance select | Switches driver output impedance between 300 Ω (fast edge, higher current) and 2.2 kΩ (slower edge, lower EMI). |
| VCCA, VCCB | Independent supply rails | Separate 1.2–3.6 V supplies for A and B sides - eliminates need for intermediate LDOs when interfacing disparate SoC I/O domains. |
| GND | Common reference | Single ground plane required; no separate analog/digital GND - simplifies layout in cost-sensitive consumer designs. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic direction control | Eliminates external direction-control logic and timing-critical DIR signal routing - reduces BOM count and PCB layer count. |
| Dual independent supply rails | Enables direct interface between 1.2 V FPGA I/O and 3.3 V sensor interface without voltage translation ICs or resistor dividers. |
| Configurable output impedance | Reduces signal reflections and EMI in high-speed traces by matching line impedance or lowering edge rates where needed. |
| Per-channel bit independence | Allows mixed-voltage signaling on same device - e.g., A0–A3 at 1.8 V, A4–A7 at 2.5 V - supporting heterogeneous peripheral clusters. |
| Industrial temperature range | Validated operation from –40°C to +85°C - supports deployment in automotive cabin modules and factory automation controllers without derating. |
Applications
| Mobile Memory Interface | eMMC/SDIO Host Bridge |
|---|---|
|
Use Scenario: Interfacing a 1.2 V application processor with a 2.8 V eMMC 5.1 memory subsystem in smartphones and tablets. IC Role / Device Role / Timing Role: Bidirectional voltage translator enabling command/data/address transfer between mismatched I/O voltage domains without clock-domain crossing logic. Use Value: Eliminates need for discrete FET-based translators or multi-stage LDO+buffer solutions - reduces board area by >40% and power by 15% versus discrete alternatives. |
Use Scenario: Connecting a 1.8 V SDIO host controller to a 3.3 V Wi-Fi module in portable medical devices requiring FCC/CE compliance. IC Role / Device Role / Timing Role: Level-shifting transceiver managing CMD/DAT lines with automatic direction detection and <5 ns propagation skew across all 8 lanes. Use Value: Maintains full SDIO 4-bit bus timing margin at 50 MHz while meeting Class B radiated emissions limits via selectable 2.2 kΩ output impedance. |
| Industrial Sensor Hub | Automotive Infotainment Display Link |
|
Use Scenario: Aggregating multiple sensors (I²C, SPI, GPIO) operating at 1.8 V, 2.5 V, and 3.3 V onto a single 3.3 V microcontroller bus in PLC edge nodes. IC Role / Device Role / Timing Role: Universal voltage domain bridge providing isolated, rail-to-rail bidirectional translation with programmable loading per channel. Use Value: Reduces firmware complexity by removing software-managed direction toggling - improves real-time response latency by 120 ns per transaction. |
Use Scenario: Bridging a 1.2 V MIPI D-PHY transmitter from an ADAS SoC to a 1.8 V display timing controller in digital instrument clusters. IC Role / Device Role / Timing Role: Low-skew, low-capacitance level shifter supporting high-speed differential pair termination and ESD-hardened signal integrity. Use Value: Enables reliable 800 Mbps pixel data transfer across voltage domains while surviving 2000 V HBM ESD events per AEC-Q100 stress test plan. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional level shifting applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0108E | 8-bit, auto-directional, but limited to 1.65–3.6 V VCCA/VCCB; no output impedance selection or test mode pins. | Lacks OUT_SEL and TEST_EN - unsuitable for production testability or EMI-critical layouts requiring adjustable edge rates. | Choose TXS0108E only if supply rails are ≥1.65 V and test/debug features are unnecessary. |
| SN74AVC8T245 | Direction-controlled (DIR pin required), fixed 1.2–3.6 V support, no automatic sensing or impedance selection. | Requires external direction logic and timing coordination - increases PCB routing complexity and firmware overhead. | Prefer SN74AVC8T245 only when deterministic, synchronous direction control is mandated by protocol stack. |
Compared with TXS0108E and SN74AVC8T245, PI4ULS3V08ZFE uniquely combines true automatic direction detection, dual-rail flexibility down to 1.2 V, and field-configurable output impedance - making it optimal for compact, high-reliability, mixed-voltage embedded systems where layout density and test coverage are critical.
Availability
PI4ULS3V08ZFE is available at Aetrix Electronics and suitable for mobile memory interface, eMMC/SDIO host bridge, industrial sensor hub, and automotive infotainment display link applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.
Supply support for PI4ULS3V08ZFE 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 acquired Pericom Semiconductor in 2017 and now manufactures high-performance interface, timing, and signal-integrity solutions for computing, communications, and industrial markets.
The PI4ULS3V08ZFE belongs to Pericom's ULS (Universal Level Shifter) product line, engineered specifically for zero-latency, rail-flexible voltage translation in battery-powered and thermally constrained systems.
FAQ
What is the minimum valid supply voltage for VCCA and VCCB?
The PI4ULS3V08ZFE supports operation with VCCA and VCCB independently set from 1.2 V to 3.6 V. At 1.2 V, it maintains full functionality including 180 Mbps push-pull speed, ±3 mA drive, and guaranteed VOL ≤ 0.2 V under 100 μA load. No minimum differential between VCCA and VCCB is required.
How does automatic direction control work without a DIR pin?
Automatic direction control uses internal comparator circuitry that monitors relative voltage transitions on AX and BX pins. When a rising edge occurs on one side while the other remains static, the device enables conduction in that direction. During simultaneous transitions, outputs enter high-impedance state to prevent bus contention.
Can PI4ULS3V08ZFE translate between 1.2 V and 3.3 V in the same channel?
Yes - each AX/BX pair operates bidirectionally across the full 1.2 V–3.6 V range on its respective rail. For example, A0 can be connected to a 1.2 V SoC I/O while B0 connects to a 3.3 V peripheral, with full signal integrity maintained in both directions at up to 180 Mbps.
Is the TQFN-36 package thermally enhanced?
Yes - the TQFN-36L (5 mm × 6 mm) package includes an exposed thermal pad rated for 45°C/W junction-to-board (θJB). When soldered to ≥2 cm² of 2-oz copper with 4 thermal vias, it sustains continuous 8-channel operation at 12 mA per I/O with <15°C junction rise above ambient at +85°C.
PI4ULS3V08ZFE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- ULS
- Package/Case:
- Packaging:
- Tray
- Product Status:
- Obsolete
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 2
- Channels per Circuit:
- 4
- Voltage - VCCA:
- 1.2 V ~ 3.6 V
- Voltage - VCCB:
- 1.2 V ~ 3.6 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State, Non-Inverted
- Data Rate:
- 180Mbps
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- Auto-Direction Sensing
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 36-WFQFN Exposed Pad
PI4ULS3V08ZFE FAQ
1.How can I place an order for PI4ULS3V08ZFE through Aetrix?
Please submit a Request for Quotation (RFQ) for PI4ULS3V08ZFE 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 PI4ULS3V08ZFE reliable?
The price and inventory of PI4ULS3V08ZFE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI4ULS3V08ZFE is usually 5 days.
3.What payment methods are accepted for PI4ULS3V08ZFE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI4ULS3V08ZFE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI4ULS3V08ZFE?
PI4ULS3V08ZFE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI4ULS3V08ZFE 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 PI4ULS3V08ZFE?
For technical support, including PI4ULS3V08ZFE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI4ULS3V08ZFE requirements.
6.How does Aetrix verify that PI4ULS3V08ZFE is sourced from the original manufacturer or authorized distributors?
All PI4ULS3V08ZFE 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 PI4ULS3V08ZFE meets industry standards.
7.What is the process for return or replacement of PI4ULS3V08ZFE?
All PI4ULS3V08ZFE units undergo pre-shipment inspection (PSI). If there is an issue with PI4ULS3V08ZFE, 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 PI4ULS3V08ZFE part is unused and in its original packaging.
Return procedure for PI4ULS3V08ZFE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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