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

Diodes Incorporated PI4ULS5V104ZBEX

Name: PI4ULS5V104ZBEX
Brand: Diodes Incorporated
SKU: PI4ULS5V104ZBEX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PI4ULS5V104ZBEX

Manufacturer:: Diodes Incorporated

Category:: Translators, Level Shifters

Package:

Datasheet:: PI4ULS5V104ZBEX.pdf

Description:: IC TRANSLTR BIDIRECTIONAL 14QFN

Quantity:: RFQ Add To RFQ list

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Inventory:44,769

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Product details

Overview

PI4ULS5V104ZBEX from Diodes Incorporated is a 4-bit bidirectional voltage-level translator with automatic direction sensing, supporting 1.2V–3.6V on the A port and 1.65V–5.5V on the B port (V_CCA ≤ V_CCB), 5 µA max I_CC, and 100 Mbps max data rate at 3.3V/5V operation. It enables seamless interfacing between mixed-voltage domains in I/O expansion, sensor hubs, and low-power microcontroller peripherals.

For engineers reviewing the PI4ULS5V104ZBEX datasheet, PI4ULS5V104ZBEX pinout, PI4ULS5V104ZBEX application, or PI4ULS5V104ZBEX equivalent, key selection criteria include its V_CCA/V_CCB supply constraints, OE-referenced-to-V_CCA control logic, I_off-enabled partial power-down capability, and absence of external direction-control signals.

Technical Context

This device implements an auto-sensing, edge-triggered one-shot architecture: rising edges activate PMOS transistors to accelerate low-to-high transitions; falling edges activate NMOS transistors for high-to-low transitions. Output impedance varies with V_CCO: ~70 Ω at 1.2–1.8 V, ~50 Ω at 1.8–3.3 V, and ~40 Ω at 3.3–5 V.

No external direction-control signal is required - data flow direction is determined dynamically by input edge detection on either port. The OE input is referenced solely to V_CCA, and V_CCA must not exceed V_CCB; both supplies support independent power sequencing, with V_CCA = 0 V or V_CCB = 0 V forcing all I/Os into high-impedance state.

Key Specifications

Parameter	Value and Actual Design Meaning
A-port voltage range	1.2 V to 3.6 V; defines minimum system voltage compatibility for low-voltage logic (e.g., 1.2V/1.5V/1.8V MCUs)
B-port voltage range	1.65 V to 5.5 V; supports interface to 2.5V/3.3V/5V peripherals including legacy interfaces and sensors
Max data rate	100 Mbps (at V_CCA = 2.5–3.3 V, V_CCB = 2.5–5 V); sufficient for SPI, UART, and fast GPIO bridging
I_CC (max)	5 µA; enables always-on level translation in battery-powered systems without significant quiescent drain
I_off	±2 µA (A/B port); ensures isolation during partial power-down, preventing back-current when one side is unpowered
Propagation delay (t_pd)	0.8–6.9 ns (A→B/B→A); sub-10 ns latency preserves timing margins in high-speed digital interconnects
V_CCA ≤ V_CCB	Mandatory supply constraint; prevents internal latch-up and ensures correct biasing of cross-rail MOSFET switches

Pinout & Package

PI4ULS5V104ZBEX is housed in a 14-pin, 3.5 mm × 3.5 mm TQFN package (ZB code) with exposed thermal pad, optimized for space-constrained PCB layouts and thermal performance in portable electronics.

Pin/Terminal	Circuit Role	Design Meaning
V_CCA	A-port supply rail	Powers A-side I/Os and OE input circuitry; sets A-port logic thresholds and must be ≤ V_CCB
V_CCB	B-port supply rail	Powers B-side I/Os; determines B-port output drive strength and voltage swing
GND	Common reference	Single ground connection shared by both ports; no separate analog/digital grounds required
OE	Output enable (active-low)	Referenced to V_CCA; pulls low to place all A/B I/Os in high-impedance state for bus sharing or power gating
A1–A4	A-port bidirectional I/Os	4-channel data paths referenced to V_CCA; support 1.2–3.6 V logic levels and auto-direction sensing
B1–B4	B-port bidirectional I/Os	4-channel data paths referenced to V_CCB; support 1.65–5.5 V logic levels and dynamic direction resolution
NC	No internal connection	Pins 7 and 11 are unused; must remain unconnected or grounded per layout best practice (no functional impact)

Key Features

Feature	Design Value
Automatic direction control	Eliminates need for external DIR signal or GPIO coordination - reduces MCU pin count and firmware complexity in multi-voltage I/O expansion
V_CC isolation	Guarantees high-impedance outputs if either V_CCA or V_CCB drops to 0 V - prevents bus contention during asymmetric power sequencing or fault conditions
I_off partial power-down	Enables safe operation when one side is powered off while the other remains active - critical for hot-plug, sleep-mode, and modular subsystem designs
Low dynamic power	Typical C_pd = 7–12 pF (A-port), 11–25 pF (B-port); minimizes switching current and EMI in high-frequency data paths
Robust ESD protection	15 kV HBM on B port, 2.5 kV HBM on A port - exceeds JEDEC standards for handling and board-level reliability in industrial environments

Applications

IoT Sensor Hub Interface

MCU GPIO Voltage Translation

Use Scenario: Connecting 1.8V I²C sensors and 3.3V wireless SoCs within a compact environmental monitoring node.

IC Role / Device Role / Timing Role: Bidirectional level shifter enabling synchronous data exchange without clock stretching or protocol modification.

Use Value: Eliminates need for discrete MOSFET translators or dual-supply buffers, reducing BOM count and PCB area by >40%.

Use Scenario: Extending GPIO count of a 1.2V ultra-low-power MCU to drive 5V industrial actuators via shift registers.

IC Role / Device Role / Timing Role: Voltage-domain bridge allowing direct connection of A-port GPIOs to B-port parallel bus lines with <10 ns propagation skew.

Use Value: Enables full-speed bit-banged communication (e.g., 100 Mbps SPI bursts) without timing guard bands or slew-rate limiting.

Wearable Display Subsystem

Automotive Body Control Module

Use Scenario: Interfacing a 1.5V display controller to a 3.3V touch controller and 5V backlight driver in a smartwatch.

IC Role / Device Role / Timing Role: Single-chip solution for concurrent translation across three voltage rails using shared OE control and isolated V_CCA/V_CCB.

Use Value: Reduces standby current to <5 µA while maintaining instant wake-up response - extends battery life by >30% over discrete solutions.

Use Scenario: Isolating 3.3V CAN transceiver logic from 5V microcontroller I/O in a LIN/CAN gateway module.

IC Role / Device Role / Timing Role: Level-shifting diagnostic and configuration pins while ensuring V_CCA/V_CCB fault containment per ISO 11898-2 requirements.

Use Value: Supports AEC-Q100-compliant design by guaranteeing no backfeed current during V_CCA brownout events.

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 direction-control signal; no auto-sensing; higher I_CC (15 µA typical)	Lacks OE-referenced-to-V_CCA and V_CC isolation - unsuitable for asymmetric power-down scenarios	Select only when direction is static or controlled externally; avoid where V_CCA/V_CCB sequencing is unpredictable
SN74AVC4T245	Direction-controlled (DIR pin); supports 1.2–3.6 V on both sides; no V_CCA ≤ V_CCB constraint	Cannot translate between 1.2V ↔ 5V directly; lacks I_off and V_CC isolation features	Prefer for symmetric 1.8V/3.3V bridges; reject for mixed-rail automotive or battery-backed systems requiring fail-safe isolation

Compared with TXS0104E and SN74AVC4T245, PI4ULS5V104ZBEX uniquely delivers autonomous direction resolution, V_CCA-referenced OE, and guaranteed high-Z behavior during single-rail power loss - making it the only choice for robust, low-pin-count, mixed-voltage I/O consolidation in portable and automotive edge nodes.

Availability

PI4ULS5V104ZBEX is available at Aetrix Electronics and suitable for IoT sensor hubs, wearable display subsystems, automotive body control modules, and MCU GPIO expansion requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for PI4ULS5V104ZBEX 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 integrated circuits, specializing in high-performance, energy-efficient solutions for power management, signal integrity, and connectivity applications.

The PI4ULS5V104 belongs to Diodes' Pericom® high-speed interface product line, engineered specifically for low-latency, low-power bidirectional voltage translation in space- and power-constrained embedded systems.

FAQ

Can PI4ULS5V104ZBEX translate between 1.2V and 5V without external components?

Yes - it natively supports 1.2V A-port and 5V B-port operation with V_CCA ≤ V_CCB satisfied. No pull-up resistors, direction-control logic, or additional transistors are needed. The internal auto-sensing architecture handles bidirectional data flow transparently, and the 15 kV B-port HBM rating ensures robustness against ESD during 5V interface handling.

What happens if VCCA exceeds VCCB during operation?

V_CCA > V_CCB violates the absolute maximum rating and may cause latch-up or permanent damage. The device is designed with strict internal biasing that assumes V_CCA ≤ V_CCB; operation outside this condition risks exceeding junction voltage limits in the cross-rail MOSFET structure. Always enforce this constraint in power supply design and sequencing.

Is OE required to be driven actively, or can it be tied off?

OE must be actively driven or pulled to a defined state. To ensure high-impedance outputs during power-up/down, OE should be tied to GND via a pull-down resistor (value determined by driver sink capability). Leaving OE floating risks undefined I/O states and potential bus contention - the datasheet explicitly requires OE control for deterministic 3-state behavior.

Does PI4ULS5V104ZBEX support I²C or SMBus protocols?

No - it is incompatible with open-drain buses like I²C or SMBus. Its push-pull output drivers cannot tolerate external pull-ups on bidirectional lines, and its auto-sensing mechanism relies on active driving from both sides. Using it on I²C would cause contention, excessive current draw, and signal corruption; dedicated I²C translators (e.g., PCA9306) must be used instead.

PI4ULS5V104ZBEX 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:: 1

Channels per Circuit:: 4

Voltage - VCCA:: 1.2 V ~ 3.6 V

Voltage - VCCB:: 1.65 V ~ 5.5 V

Input Signal:: -

Output Signal:: -

Output Type:: Tri-State, Non-Inverted

Data Rate:: 100Mbps

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

Grade:: -

Qualification:: -

Features:: Auto-Direction Sensing

Mounting Type:: Surface Mount

Supplier Device Package:: 14-VFQFN Exposed Pad

PI4ULS5V104ZBEX FAQ

1.How can I place an order for PI4ULS5V104ZBEX through Aetrix?

Please submit a Request for Quotation (RFQ) for PI4ULS5V104ZBEX 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 PI4ULS5V104ZBEX reliable?

The price and inventory of PI4ULS5V104ZBEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI4ULS5V104ZBEX is usually 5 days.

3.What payment methods are accepted for PI4ULS5V104ZBEX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI4ULS5V104ZBEX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI4ULS5V104ZBEX?

PI4ULS5V104ZBEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI4ULS5V104ZBEX 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 PI4ULS5V104ZBEX?

For technical support, including PI4ULS5V104ZBEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI4ULS5V104ZBEX requirements.

6.How does Aetrix verify that PI4ULS5V104ZBEX is sourced from the original manufacturer or authorized distributors?

All PI4ULS5V104ZBEX 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 PI4ULS5V104ZBEX meets industry standards.

7.What is the process for return or replacement of PI4ULS5V104ZBEX?

All PI4ULS5V104ZBEX units undergo pre-shipment inspection (PSI). If there is an issue with PI4ULS5V104ZBEX, 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 PI4ULS5V104ZBEX part is unused and in its original packaging.

Return procedure for PI4ULS5V104ZBEX:

1.Submit a request within 90 days.

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

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