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Home > Products > Integrated Circuits (ICs) > Logic > Translators, Level Shifters

Diodes Incorporated PI4ULS3V501TAEX

Name: PI4ULS3V501TAEX
Brand: Diodes Incorporated
SKU: PI4ULS3V501TAEX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PI4ULS3V501TAEX

Manufacturer:: Diodes Incorporated

Category:: Translators, Level Shifters

Package:

Datasheet:: PI4ULS3V501TAEX.pdf

Description:: IC TRANSLATOR BIDIR SOT23-6

Quantity:: RFQ Add To RFQ list

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Inventory:6,000

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Product details

Overview

PI4ULS3V501TAEX from Diodes Incorporated is a 1-bit bidirectional level translator for push-pull applications, supporting independent dual-supply operation (VCCA = 0.85–2.7 V, VCCB = 1.35–3.6 V), 280 Mb/s data rate at 2.5–3.6 V/1.8–2.7 V, 30 pF capacitive drive, and 3-state enable control. It enables voltage translation between low-voltage logic (e.g., 1.8 V I²C) and higher-voltage interfaces (e.g., 3.3 V GPIO) in portable mobile systems.

For engineers reviewing the PI4ULS3V501TAEX datasheet, PI4ULS3V501TAEX pinout, PI4ULS3V501TAEX application, or PI4ULS3V501TAEX equivalent, this device serves as a directionless, autosensing logic-level shifter with overvoltage-tolerant I/O, non-preferential power-up sequencing, and system-level 2 kV HBM ESD protection - critical for space-constrained, multi-rail embedded designs.

Technical Context

The PI4ULS3V501TAEX implements an autosensing, one-shot-based bidirectional translation architecture that detects signal transitions on either port to autonomously determine data flow direction-eliminating need for external direction control. Its dual-rail design allows VCCA and VCCB to operate independently, with no fixed voltage relationship required.

Each I/O channel (A and B) functions as input or output dynamically; EN pin (referenced to VCCA) provides active-high 3-state control, placing both ports in high-impedance mode to reduce supply current to ≤1.5 µA. Power-off protection ensures high-Z state when either VCCA or VCCB = 0 V.

Key Specifications

Parameter	Value and Actual Design Meaning
Max Data Rate	280 Mb/s (guaranteed at VCCB = 2.5–3.6 V, VCCA = 1.8–2.7 V, C_IO = 15 pF)
VCCA Range	0.85 V to 2.7 V - supports ultra-low-voltage domains (e.g., 0.9 V, 1.2 V, 1.8 V cores)
VCCB Range	1.35 V to 3.6 V - interoperates with 1.8 V, 2.5 V, 3.3 V I/O standards
Capacitive Drive	30 pF - drives EMI filters and long PCB traces without signal degradation
Propagation Delay	≤10 ns (typical, VCCB = 2.5–3.6 V, VCCA = 1.8–2.7 V, C_IO = 15 pF)
ESD Protection	2 kV HBM - meets system-level robustness requirements for handheld electronics
Supply Current (Active)	≤1.5 µA (VCCA/VCCB quiescent, EN = VCCA)
Output Enable Time	t_EN-A ≤ 250 ns, t_EN-B ≤ 400 ns - fast activation for dynamic interface management

Pinout & Package

Package: SOT23-6 (TA6), surface-mount, lead-free and RoHS-compliant, footprint compatible with JEDEC MO-178.

Pin/Terminal	Circuit Role	Design Meaning
1 (A)	I/O A-port terminal	Bidirectional signal referenced to VCCA; auto-senses direction; tolerates −0.5 V to +3.6 V
2 (GND)	Ground reference	Common return path for both supplies; decoupling capacitor must connect here
3 (VCCA)	A-port supply	Powers A-side logic; sets input thresholds (VIHA/VILA = 2/3 & 1/3 × VCCA)
4 (VCCB)	B-port supply	Powers B-side logic; sets input thresholds (VIHB/VILB = 2/3 & 1/3 × VCCB)
5 (B)	I/O B-port terminal	Bidirectional signal referenced to VCCB; auto-senses direction; tolerates −0.5 V to +4.6 V
6 (EN)	Enable control input	Active-high; referenced to VCCA; overvoltage tolerant (−0.5 V to +3.6 V); disables both ports to 3-state

Key Features

Feature	Design Value
No direction control pin required	Autosensing one-shot circuitry detects edge transitions on A or B port to self-determine data flow direction
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
Power-off protection	Both I/O ports enter high-impedance state automatically when VCCA = 0 V or VCCB = 0 V
Overvoltage-tolerant I/O and EN	All I/O pins and EN tolerate −0.5 V to +4.6 V (B-side) or +3.6 V (A-side/EN), enabling hot-swap compatibility
Low static power consumption	Quiescent supply current ≤1.5 µA per rail with EN asserted; ≤0.5 µA in 3-state mode

Applications

Mobile Phone Baseband Interface

Wearable Sensor Hub Interconnect

Use Scenario: Translating I²C signals between a 1.8 V application processor and a 3.3 V touch controller or display driver in slim smartphone designs.

IC Role / Device Role / Timing Role: Bidirectional level translator handling clock/data lines without direction pin overhead or timing skew penalties.

Use Value: Enables direct connection across voltage domains while maintaining 280 Mb/s capability and sub-10 ns propagation delay - preserving I²C timing margins under load.

Use Scenario: Interfacing a 0.9 V ultra-low-power MCU with 2.5 V environmental sensors (e.g., humidity, pressure) in battery-powered wearables.

IC Role / Device Role / Timing Role: Voltage-agnostic signal bridge allowing mixed-supply subsystems to share serial buses with minimal PCB real estate.

Use Value: Supports VCCA as low as 0.85 V - critical for sub-1 V logic domains - while delivering 30 pF drive strength to overcome sensor module input capacitance.

Industrial Handheld Terminal GPIO Expansion

Automotive Infotainment Subsystem Debug Port

Use Scenario: Extending 3.3 V microcontroller GPIO to control 1.2 V FPGA configuration pins or low-voltage LED drivers in ruggedized field devices.

IC Role / Device Role / Timing Role: Configurable push-pull translator providing 3-state isolation during firmware updates or fault conditions.

Use Value: EN pin enables hardware-controlled bus isolation; 2 kV HBM rating withstands ESD events in unshielded industrial environments.

Use Scenario: Level-shifting UART or SPI debug signals between a 3.3 V infotainment SoC and a 1.8 V diagnostic microcontroller in AEC-Q200-aligned modules.

IC Role / Device Role / Timing Role: Robust, low-skew interface translator meeting automotive reliability requirements without requiring qualification retesting.

Use Value: Lead-free, halogen-free "Green" construction and IATF 16949-manufactured origin support automotive change control - though not AEC-Q100 qualified itself.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional level translation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TXS0101DCKR	Single-channel, 1.65–5.5 V V_CCA/V_CCB; max 60 Mb/s; no OVT on EN; 1.5 µA I_Q	Limited to ≥1.65 V minimum supply; lower speed; less robust ESD (1.5 kV HBM)	Prefer for cost-sensitive, non-portable designs where 60 Mb/s suffices and supply rails are ≥1.65 V.
SN74AVC1T45DBVR	Direction-controlled (DIR pin required); 1.2–3.6 V; 500 Mb/s; 3-state capable; 10 µA I_Q	Requires board routing for DIR signal; higher speed but adds control complexity and layout overhead	Choose when deterministic direction control and >280 Mb/s throughput justify added pin and firmware coordination.

Compared with TXS0101DCKR, PI4ULS3V501TAEX delivers 4.7× higher data rate and broader low-voltage support (down to 0.85 V), while offering superior ESD and overvoltage tolerance; versus SN74AVC1T45DBVR, it eliminates direction-pin routing and reduces firmware dependencies at the cost of slightly lower peak speed.

Availability

PI4ULS3V501TAEX is available at Aetrix Electronics and suitable for mobile phone baseband interfaces, wearable sensor hubs, industrial handheld terminals, and automotive infotainment subsystems requiring stable component supply, RoHS-compliant packaging, and SOT23-6 footprint compatibility.

Supply support for PI4ULS3V501TAEX 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, industrial, and automotive markets.

The PI4ULS3V501 belongs to Diodes' Pericom® level translation product line, engineered specifically for compact, multi-voltage portable electronics requiring zero-direction-pin, autosensing bidirectional signal bridging with robust ESD and power sequencing resilience.

FAQ

What is the minimum VCCA voltage supported by PI4ULS3V501TAEX?

The absolute minimum VCCA is 0.85 V, with input thresholds scaling as VIHA = 2/3 × VCCA and VILA = 1/3 × VCCA. At VCCA = 0.85 V, VIHA(min) = 0.57 V and VILA(max) = 0.28 V - enabling reliable interfacing with sub-1 V logic families such as certain ultra-low-power MCUs and memory controllers.

Can PI4ULS3V501TAEX translate between 1.2 V and 3.3 V logic without external components?

Yes. With VCCA = 1.2 V and VCCB = 3.3 V, the device operates within its specified ranges (VCCA: 0.85–2.7 V; VCCB: 1.35–3.6 V). No pull-up resistors or direction control are needed - the autosensing architecture handles bidirectional translation natively, and I/O pins tolerate overvoltage relative to their respective supplies.

Does PI4ULS3V501TAEX require decoupling capacitors, and if so, what values?

Yes. Diodes recommends 0.01 µF to 0.1 µF ceramic decoupling capacitors placed as close as possible to both VCCA and VCCB pins, with short low-inductance paths to GND. This minimizes supply noise coupling into the sensitive level-shifting core and maintains signal integrity at 280 Mb/s operation.

Is PI4ULS3V501TAEX qualified for automotive applications under AEC-Q100?

No. While manufactured in IATF 16949-certified facilities and suitable for automotive infotainment subsystems, PI4ULS3V501TAEX is not AEC-Q100 qualified. For AEC-Q100-requiring designs, Diodes offers pin-compatible alternatives like the PI4ULS3V501Q - which undergoes full stress testing and PPAP documentation per automotive change control requirements.

PI4ULS3V501TAEX 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:: Push-Pull

Data Rate:: 280Mbps

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Features:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-6

PI4ULS3V501TAEX FAQ

1.How can I place an order for PI4ULS3V501TAEX through Aetrix?

Please submit a Request for Quotation (RFQ) for PI4ULS3V501TAEX 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 PI4ULS3V501TAEX reliable?

The price and inventory of PI4ULS3V501TAEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI4ULS3V501TAEX is usually 5 days.

3.What payment methods are accepted for PI4ULS3V501TAEX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI4ULS3V501TAEX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI4ULS3V501TAEX?

PI4ULS3V501TAEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI4ULS3V501TAEX 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 PI4ULS3V501TAEX?

For technical support, including PI4ULS3V501TAEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI4ULS3V501TAEX requirements.

6.How does Aetrix verify that PI4ULS3V501TAEX is sourced from the original manufacturer or authorized distributors?

All PI4ULS3V501TAEX 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 PI4ULS3V501TAEX meets industry standards.

7.What is the process for return or replacement of PI4ULS3V501TAEX?

All PI4ULS3V501TAEX units undergo pre-shipment inspection (PSI). If there is an issue with PI4ULS3V501TAEX, 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 PI4ULS3V501TAEX part is unused and in its original packaging.

Return procedure for PI4ULS3V501TAEX:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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