Nexperia USA Inc. LSF0102DPH

Overview

LSF0102DPH from Nexperia is a 2-channel bidirectional multi-voltage level translator supporting open-drain and push-pull interfaces, with up-translation ≤100 MHz and down-translation ≥100 MHz at ≤30 pF load, 5 V-tolerant I/O pins, and no direction pin required. It enables voltage translation between 0.95 V–5.0 V pairs in I²C, SMBus, and GPIO systems.

For engineers reviewing the LSF0102DPH datasheet, LSF0102DPH pinout, LSF0102DPH application, or LSF0102DPH equivalent, this page delivers verified electrical parameters, TSSOP8 package details, flow-through pinout routing guidance, and real-world interface-level use cases for telecom, industrial, and computing designs.

Technical Context

The LSF0102DPH implements passive FET-based bidirectional translation without internal level-shifting circuitry or direction control logic, relying on external pull-up resistors and reference voltages (refA/refB) to set channel-specific translation thresholds. Its architecture supports independent voltage domains per channel - e.g., A-side at 1.8 V ↔ B-side at 3.3 V - with automatic signal direction detection.

It operates across -40 °C to +125 °C, features high-impedance I/O when EN = LOW, and maintains low ON-resistance (≤7 Ω typical) to minimize signal distortion. ESD protection meets HBM >2000 V and CDM >1000 V, ensuring robustness in hot-insertion environments.

Key Specifications

Pinout & Package

TSSOP8 (SOT505-2) package: plastic thin shrink small outline, 8 leads, 3 mm body width, 0.5 mm lead length, flow-through pinout optimized for PCB trace routing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TXS0102DCUR and PCA9306DP, the LSF0102DPH uniquely combines 100 MHz capability, 5 V tolerance, and zero-direction-pin operation - making it optimal for high-speed, mixed-voltage, and hot-pluggable telecom and industrial interfaces where external component count and timing margin are critical.

Availability

LSF0102DPH is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and personal computing applications requiring stable component supply, extended temperature operation, and reliable bidirectional level translation.

Supply support for LSF0102DPH 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

Nexperia is a leading semiconductor manufacturer specializing in high-performance, energy-efficient logic, discrete, and MOSFET solutions, headquartered in Nijmegen, Netherlands.

The LSF series targets high-speed, flexible voltage translation in mixed-signal systems - designed specifically for modern interface bridging where traditional unidirectional or direction-pin-dependent translators introduce layout complexity and timing risk.

FAQ

What is the maximum capacitive load supported at 100 MHz translation?

The LSF0102DPH supports up-translation ≤100 MHz and down-translation ≥100 MHz only at ≤30 pF total capacitive load, including PCB trace, connector, and device pin capacitance. At 50 pF, maximum speed reduces to ≤50 MHz for up-translation and ≥50 MHz for down-translation, as confirmed in the datasheet's switching characteristics table.

Can refA and refB be set to the same voltage?

Yes - refA and refB may be tied to identical voltages (e.g., both at 3.3 V) to configure symmetric translation, though the device is optimized for asymmetric use. Doing so does not impair functionality but forfeits the key advantage of independent domain control; RON and timing remain within spec per channel.

Is external pull-up resistance required for open-drain operation?

Yes - open-drain mode requires external pull-up resistors on both A-side and B-side signal lines. The value depends on bus speed and load capacitance; typical values range from 1 kΩ to 10 kΩ. No internal pull-ups exist, and omission causes undefined logic states and failed communication.

Does the LSF0102DPH support hot insertion without system reset?

Yes - with EN held LOW during insertion, all I/O pins enter high-impedance state, preventing bus contention. Once inserted, asserting EN HIGH enables translation without disrupting other devices on shared buses like I²C or SMBus, as verified in functional description Table 4 and application notes on hot insertion.