Diodes Incorporated PI4ULS5V102GAEX

Overview

PI4ULS5V102GAEX from Diodes Incorporated is a 2-bit universal bi-directional voltage-level translator with automatic direction control, supporting 1.2V–3.6V on A port and 1.65V–5.5V on B port (VCCA ≤ VCCB), 5 μA max ICC, Ioff-enabled partial-power-down operation, and MSOP-8/CSP-8 packaging - used in mixed-voltage I/O interfacing between microcontrollers and peripherals such as sensors or memory.

For engineers reviewing the PI4ULS5V102GAEX datasheet, PI4ULS5V102GAEX pinout, PI4ULS5V102GAEX application, or PI4ULS5V102GAEX equivalent, key selection considerations include dual-supply rail compatibility, OE-controlled 3-state behavior, VCC isolation, ESD robustness (15-kV HBM on B port), and channel-to-channel skew ≤1.4 ns at 100 Mbps.

Technical Context

This device implements an auto-sensing bidirectional translation architecture without external direction control: weak-output drivers are overdriven by opposing-side signals, while edge-triggered one-shot circuits accelerate transitions using PMOS/NMOS boost transistors. Output impedance varies with VCCO: ~70 Ω (1.2–1.8 V), ~50 Ω (1.8–3.3 V), ~40 Ω (3.3–5 V).

It supports true partial-power-down via Ioff, disabling outputs when either VCCA or VCCB = 0 V to prevent backflow current. The OE input is referenced to VCCA, enabling synchronous enable/disable across both ports, with ten ≤ 0.5 μs and tdis ≤ 0.5 μs under all valid supply combinations.

Key Specifications

Pinout & Package

PI4ULS5V102GAEX is packaged in an 8-pin Wafer-Level Chip-Scale Package (CSP-8), measuring 0.95 mm × 1.94 mm, with 0.5 mm pitch and bottom-side solder pads - optimized for space-constrained portable electronics and wearables.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TXS0102DCUR and SN74AVC2T244RSWR, PI4ULS5V102GAEX uniquely supports 1.2V-to-5.5V translation without direction pins or intermediate rails, delivers lowest ICC (5 μA max), and provides VCC isolation - making it optimal for energy-sensitive, mixed-rail embedded systems where layout area and power budget are constrained.

Availability

PI4ULS5V102GAEX is available at Aetrix Electronics and suitable for IoT sensor hubs, industrial PLC I/O modules, wearable health monitors, and automotive body control modules requiring stable component supply, long-term lifecycle assurance, and wafer-level CSP packaging for miniaturized designs.

Supply support for PI4ULS5V102GAEX 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-reliability interface, power management, and signal integrity solutions for industrial, computing, and consumer markets.

The PI4ULS5V102 belongs to Diodes' Pericom® interface product line, engineered specifically for low-power, space-constrained bidirectional level translation in mixed-voltage embedded systems - emphasizing automatic direction control, VCC isolation, and robust ESD performance.

FAQ

Can PI4ULS5V102GAEX translate between 1.2V and 5V without external components?

Yes. It natively supports 1.2V–3.6V on the A port and 1.65V–5.5V on the B port with VCCA ≤ VCCB, enabling direct 1.2V ↔ 5V translation. No pull-up resistors, direction-control logic, or additional MOSFETs are required - confirmed by DC and AC characterization across all valid supply combinations in DS40264 Rev 1-2.

What happens if VCCA exceeds VCCB during operation?

VCCA must not exceed VCCB per absolute maximum ratings and functional specifications. Exceeding this violates the internal biasing scheme, potentially causing undefined output states, increased leakage (>±2 μA), or accelerated parametric shift. The device does not tolerate VCCA > VCCB - design must enforce this constraint via power sequencing or regulator selection.

Is PI4ULS5V102GAEX suitable for I²C bus translation?

No. Its weak-output drivers (typical impedance ≥40 Ω) and lack of open-drain emulation make it incompatible with I²C's wired-AND topology and pull-up resistor requirements. The datasheet explicitly warns against use in I²C or 1-Wire applications due to contention risk - dedicated I²C translators like PI4IOE5V9408 are recommended instead.

How does the OE pin behave during power-up?

OE is referenced to VCCA and must be pulled low via an external resistor (value determined by driver strength) to ensure all I/Os remain in high-impedance until both VCCA and VCCB are stable. If left floating, OE may float high prematurely, causing bus contention. Minimum pull-down resistance is specified in the "Power Up" section of DS40264 Rev 1-2.