Nexperia USA Inc. LSF0102DCH

Overview

LSF0102DCH 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 - deployed in I²C, SMBus, and GPIO voltage domain bridging between 0.95 V–5.0 V rails.

For engineers reviewing the LSF0102DCH datasheet, LSF0102DCH pinout, LSF0102DCH application, or LSF0102DCH equivalent, this page delivers verified pin functions, real-world translation bandwidths per load condition, thermal and ESD ratings, and validated alternatives for mixed-voltage interface design.

Technical Context

The LSF0102DCH implements passive FET-based bidirectional level shifting without internal direction control logic, relying on external pull-up resistors and reference voltages (refA/refB) to establish independent translation domains per channel. Its architecture enables simultaneous up- and down-translation across two independent A/B pairs.

It supports hot insertion and maintains high-impedance I/O when EN = LOW, with R_ON ranging from 3 Ω to 7 Ω depending on V_refA and current conditions, ensuring minimal signal distortion in timing-critical interfaces like I²C and PMBus.

Key Specifications

Pinout & Package

LSF0102DCH is packaged in TSSOP8 (SOT505-2), with 3 mm body width, 0.65 mm pitch, and gull-wing leads - optimized for automated assembly and thermal dissipation in dense PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TXS0102 and PCA9306, LSF0102DCH uniquely combines 5 V-tolerant I/O, EN-controlled high-Z state, and ≥100 MHz down-translation - making it optimal for telecom and industrial systems requiring robust, flexible, and high-bandwidth voltage domain bridging.

Availability

LSF0102DCH is available at Aetrix Electronics and suitable for telecom infrastructure, industrial control, personal computing, and embedded sensor interface applications requiring stable component supply and long-term manufacturability.

Supply support for LSF0102DCH 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 global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.

The LSF0102DCH belongs to Nexperia's bidirectional level translation product line, engineered specifically for seamless interoperability between mixed-voltage digital interfaces in space-constrained, thermally demanding systems.

FAQ

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

The LSF0102DCH supports ≤100 MHz up-translation and ≥100 MHz down-translation only at ≤30 pF total capacitive load, as verified in the datasheet's dynamic characteristics table. At 50 pF, maximum up-translation drops to ≤50 MHz and down-translation remains ≥50 MHz - critical for I²C Fast-mode Plus and MDIO timing compliance.

Can LSF0102DCH translate between 1.2 V and 5.0 V rails?

Yes - the device explicitly supports bidirectional translation between 1.2 V and 5.0 V, as confirmed in Section 2 ("Features and benefits") of the datasheet. refA is set to 1.2 V and refB to 5.0 V, with 5 V-tolerant I/O pins ensuring safe operation on the high-voltage side without external clamping.

Is an external pull-up resistor required on both sides of the translation path?

Yes - pull-up resistors must be placed on both the A-side (low-voltage domain) and B-side (high-voltage domain) to establish valid logic HIGH levels. The datasheet's Fig. 5 test circuit confirms dual pull-up configuration (R_pu on each side), and absence of either compromises open-drain functionality and signal integrity.

Does LSF0102DCH support hot insertion, and how is it implemented?

Yes - hot insertion is supported via inherent I/O structure: all pins remain high-impedance until powered and enabled, and the device meets JESD78 Class II Level A latch-up immunity (>100 mA). This allows safe insertion into live backplanes or modular systems without risk of bus contention or damage.