My Inquiry
My Account
Diodes Incorporated PI4ULS3V302XVEX
- Part No.:
- PI4ULS3V302XVEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
PI4ULS3V302XVEX.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,770
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PI4ULS3V302XVEX from Diodes Incorporated is a 2-bit bidirectional level translator IC for push-pull logic interfaces, 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 3-state enable control. It enables voltage translation between low-voltage mobile SoCs (e.g., 1.8 V I²C) and higher-voltage peripherals (e.g., 3.3 V sensors) without direction pins.
For engineers reviewing the PI4ULS3V302XVEX datasheet, PI4ULS3V302XVEX pinout, PI4ULS3V302XVEX application, or PI4ULS3V302XVEX equivalent, key selection criteria include autosensing bidirectional operation, non-preferential power-up sequencing, overvoltage-tolerant EN/I/O pins, and UDFN1.2×1.6 (XV) package compatibility with high-density portable PCB layouts.
Technical Context
The PI4ULS3V302XVEX implements auto-sensing bidirectional translation using one-shot edge-detection circuits per channel, eliminating need for external direction control. Each A/B port operates independently under its own supply rail, enabling VCCA < VCCB or VCCA > VCCB configurations - critical for mixed-voltage SoC-to-peripheral interconnects.
It features tristate-enabled I/O with EN referenced to VCCA and overvoltage tolerance up to +3.6 V on all I/O pins. Power-off protection ensures high-impedance state when either VCCA or VCCB = 0 V, preventing back-powering and bus contention in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 140 Mb/s max (at VCCA=1.8 V, VCCB=2.8 V, CIO=15 pF) - supports high-speed I²C, SPI, and GPIO interfaces in mobile applications. |
| Voltage Range A | 0.85 V to 2.7 V (VCCA) - compatible with 0.9 V, 1.2 V, 1.8 V, and 2.5 V logic domains including modern ultra-low-power processors. |
| Voltage Range B | 1.35 V to 3.6 V (VCCB) - interfaces directly with 1.8 V, 2.5 V, 3.3 V peripherals without external level-shifting components. |
| Capacitive Drive | 100 pF - drives EMI filters and long traces typical in handheld device flex-cable interconnects without signal degradation. |
| Propagation Delay | 10 ns max (A↔B, VCCA=1.8 V, VCCB=2.8 V, CIO=15 pF) - ensures timing integrity in synchronous protocols like SPI clock domains. |
| Supply Current (Active) | 1.5 µA max (VCCA & VCCB quiescent) - minimizes standby power in always-on sensor hubs and wearable wake-up circuits. |
| ESD Rating | 2 kV HBM system-level - meets robustness requirements for consumer handheld assembly and field operation. |
Pinout & Package
Package: 8-pin UDFN, 1.2 mm × 1.6 mm, 0.4 mm pitch, exposed thermal pad (XV code). Compact footprint supports high-density mobile PCBs with minimal board area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCCA | A-port supply rail (0.85–2.7 V); powers internal A-side logic and I/O buffers. |
| 2 | A1 | Bidirectional I/O referenced to VCCA; auto-senses direction based on edge transitions. |
| 3 | A2 | Bidirectional I/O referenced to VCCA; independent channel for second signal path (e.g., SDA/SCL pair). |
| 4 | GND | Common reference for both supply domains; must be low-inductance connection to minimize noise coupling. |
| 5 | EN | Active-high enable input (VCCA-referenced); asserts high-impedance state on all I/O when low, reducing system leakage. |
| 6 | B2 | Bidirectional I/O referenced to VCCB; translates signals to/from higher-voltage domain without direction pin. |
| 7 | B1 | Bidirectional I/O referenced to VCCB; supports full-duplex or time-multiplexed bidirectional data flow. |
| 8 | VCCB | B-port supply rail (1.35–3.6 V); powers B-side logic and drives higher-voltage peripherals. |
Key Features
| Feature | Design Value |
|---|---|
| Autosensing Bidirectionality | Eliminates direction-control trace routing and firmware overhead - each channel self-detects data flow direction via edge-triggered one-shot circuitry. |
| Non-Preferential Power-Up | Allows VCCA and VCCB to power up in any sequence without latch-up or damage - essential for multi-rail PMIC sequencing in smartphones. |
| Overvoltage-Tolerant I/O | I/O pins withstand up to +3.6 V regardless of VCCA/VCCB state - prevents damage during hot-plug or supply brownout events. |
| Power-Off Protection | Enters high-Z state when either VCCA or VCCB = 0 V - blocks back-current paths and avoids bus contention in battery-disconnected states. |
| Low Skew & Fast Edges | 0.15 ns max channel-to-channel skew and ≤3.5 ns rise/fall times (2.5–3.6 V) - preserves signal integrity across differential or parallel buses. |
Applications
| Mobile Sensor Hub Interface | Wearable Touch Controller Link |
|---|---|
|
Use Scenario: Interfacing an ultra-low-power 0.9 V ARM Cortex-M0+ microcontroller to a 3.3 V environmental sensor array in a fitness tracker. IC Role / Device Role / Timing Role: Bidirectional level translator enabling I²C communication between mismatched voltage domains without direction pin or timing overhead. Use Value: Reduces BOM count by eliminating discrete MOSFET translators and simplifies layout with single 1.2×1.6 mm UDFN footprint. |
Use Scenario: Connecting a 1.8 V capacitive touch controller ASIC to a 3.3 V display driver IC in a smartwatch UI subsystem. IC Role / Device Role / Timing Role: Dual-channel autosensing translator handling bidirectional I²C clock/data lines while maintaining sub-10 ns propagation delay. Use Value: Enables simultaneous touch reporting and display update commands with guaranteed timing margin and zero firmware intervention. |
| Smartphone Camera Module Bus | Portable Medical Diagnostic Port |
|
Use Scenario: Level-shifting MIPI I²C configuration signals between a 1.2 V application processor and a 2.8 V image sensor in a smartphone rear camera module. IC Role / Device Role / Timing Role: Low-skew, high-drive translator driving 50 pF bus capacitance while sustaining 100 Mb/s burst configuration writes. Use Value: Ensures reliable sensor initialization under varying temperature and voltage conditions without protocol retries or timeouts. |
Use Scenario: Isolating logic-level signals between a 2.5 V patient-monitoring SoC and a 3.3 V USB-to-serial bridge in a handheld ECG device. IC Role / Device Role / Timing Role: Enables safe, low-leakage bidirectional UART translation with power-off protection during battery swap. Use Value: Prevents data corruption during hot-swap events and meets IEC 60601-1 leakage current limits via tristate disable on EN. |
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 | 2-bit, 1.65–3.6 V dual-supply; no VCCA < 1.65 V support; 60 Mb/s max; MSOP-8 only | Limited to ≥1.65 V A-side - incompatible with sub-1.2 V processors or LPDDR I/O | Select when only 1.8 V/3.3 V translation needed and UDFN footprint not required. |
| PCA9306DP | 2-bit, 1.2–3.3 V dual-supply; 100 Mb/s; requires external pull-ups; no EN pin or OVT | No tristate control or overvoltage tolerance - unsuitable for hot-plug or noisy industrial environments | Choose for cost-sensitive, static-voltage applications where enable control and robustness are secondary. |
Compared with TXS0102DCUR and PCA9306DP, the PI4ULS3V302XVEX uniquely supports 0.85 V A-side operation, integrated EN-driven tristate, and 2 kV system-level ESD - making it the only option for next-gen ultra-low-voltage mobile SoCs requiring compact, robust, and sequenced-power interface solutions.
Availability
PI4ULS3V302XVEX is available at Aetrix Electronics and suitable for mobile phone sensor hubs, wearable touch interfaces, and portable medical diagnostic ports requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for PI4ULS3V302XVEX 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 components for consumer, computing, and industrial markets.
The PI4ULS3V302XVEX belongs to Diodes' ULS (Ultra-Low-Voltage Signal) translator family, engineered specifically for voltage-domain bridging in space-constrained, battery-operated portable electronics with aggressive power and density targets.
FAQ
What is the minimum VCCA voltage supported by PI4ULS3V302XVEX?
The PI4ULS3V302XVEX supports VCCA as low as 0.85 V, verified across temperature (-40°C to +85°C) and process corners. At VCCA < 1.0 V, input thresholds scale to VIH = 0.75×VCCA (min) and VIL = 0.25×VCCA (max), ensuring reliable logic recognition down to sub-1 V operation - critical for advanced low-power SoCs.
Does PI4ULS3V302XVEX require external pull-up resistors?
No. The PI4ULS3V302XVEX uses active push-pull output drivers on both A and B ports and does not rely on external pull-ups. Its 100 pF capacitive drive capability and 15 Ω typical output impedance (at VCCB = 3.6 V) allow direct connection to standard I²C or GPIO buses without additional passive components.
Can PI4ULS3V302XVEX translate between 1.8 V and 5 V logic?
No. VCCB maximum rating is +3.6 V absolute, and recommended operating range is 1.35–3.6 V. Applying 5 V to VCCB or any I/O pin exceeds absolute maximum ratings and will cause permanent damage. For 5 V interfaces, use a dedicated 3.3 V ↔ 5 V translator such as the PI4ULS5V102.
How does the EN pin behave during power-up?
The EN pin is referenced to VCCA and features overvoltage tolerance up to +3.6 V. When VCCA is unpowered (0 V), EN is effectively disabled and all I/Os remain in high-impedance state. Once VCCA reaches >0.85 V, EN becomes functional - a logic high enables translation; low forces tristate. No external power-up sequencing is required.
PI4ULS3V302XVEX 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:
- 2
- 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:
- 8-UFDFN
PI4ULS3V302XVEX FAQ
1.How can I place an order for PI4ULS3V302XVEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI4ULS3V302XVEX 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 PI4ULS3V302XVEX reliable?
The price and inventory of PI4ULS3V302XVEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI4ULS3V302XVEX is usually 5 days.
3.What payment methods are accepted for PI4ULS3V302XVEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI4ULS3V302XVEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI4ULS3V302XVEX?
PI4ULS3V302XVEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI4ULS3V302XVEX 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 PI4ULS3V302XVEX?
For technical support, including PI4ULS3V302XVEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI4ULS3V302XVEX requirements.
6.How does Aetrix verify that PI4ULS3V302XVEX is sourced from the original manufacturer or authorized distributors?
All PI4ULS3V302XVEX 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 PI4ULS3V302XVEX meets industry standards.
7.What is the process for return or replacement of PI4ULS3V302XVEX?
All PI4ULS3V302XVEX units undergo pre-shipment inspection (PSI). If there is an issue with PI4ULS3V302XVEX, 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 PI4ULS3V302XVEX part is unused and in its original packaging.
Return procedure for PI4ULS3V302XVEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PI4ULS3V302XVEX Tags
-
74LVC1T45GW,125
Nexperia USA Inc.
-
74LVCH2T45DC,125
Nexperia USA Inc.
-
SN74LVC1T45DBVR
Texas Instruments
-
SN74LVC1T45DRLR
Texas Instruments
-
SN74LVC1T45DPKR
Texas Instruments
-
SN74LVC2T45DCTR
Texas Instruments
-
74LVC2T45GT,115
Nexperia USA Inc.
-
SN74LVC1T45YZPR
Texas Instruments
-
LSF0102DCUR
Texas Instruments
-
SN74LVC1T45DCKR
Texas Instruments
-
TXS0102DCTR
Texas Instruments
-
FXLP34P5X
onsemi
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
