Nexperia USA Inc. LSF0102GSX

Overview

LSF0102GSX 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 (e.g., 1.8 V ↔ 3.3 V) in I²C, SMBus, and GPIO interconnects within telecom and industrial control systems.

For engineers reviewing the LSF0102GSX datasheet, LSF0102GSX pinout, LSF0102GSX application, or LSF0102GSX equivalent, key selection criteria include channel-specific reference voltage flexibility (refA/refB), flow-through pinout for routing efficiency, EN-controlled high-impedance state, and operation across –40 °C to +125 °C.

Technical Context

The LSF0102GSX uses passive MOSFET-based translation architecture without internal level-shifting circuitry, enabling true bidirectional signal flow per channel independent of direction control. Its EN pin activates translation when HIGH; at LOW, all A/B I/O pins enter high-impedance state, decoupling bus segments.

Each channel supports independent voltage domain pairing: refA sets the A-side logic threshold, refB sets the B-side threshold, allowing asymmetric translation (e.g., 1.2 V ↔ 5.0 V). Propagation delays are ≤1.3 ns (tPLH/tPHL) at 30 pF load and 2.3 V reference, with ON-resistance as low as 3 Ω at VrefA = 2.5 V and IO = 32 mA.

Key Specifications

Pinout & Package

XSON8 package (SOT1203): extremely thin small outline, no leads, 8-terminal surface-mount device; body dimensions 1.35 × 1.0 × 0.35 mm; optimized for high-density PCB layouts and thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TXS0102DCTR and PCA9306DCUR, the LSF0102GSX offers higher speed (100 MHz vs ≤60 MHz/400 kHz), independent dual-reference flexibility, and EN-driven bus isolation - making it optimal for mixed-signal, high-speed, and hot-pluggable industrial interfaces.

Availability

LSF0102GSX is available at Aetrix Electronics and suitable for telecom infrastructure, industrial control systems, and personal computing platforms requiring stable component supply, extended temperature operation, and flexible multi-voltage interoperability.

Supply support for LSF0102GSX 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 high-volume, high-reliability essential semiconductors - including logic, discrete, and MOSFET solutions - with manufacturing rooted in process expertise and automotive-grade quality standards.

The LSF0102 belongs to Nexperia's Level Translation portfolio, designed specifically for robust, pin-efficient voltage domain bridging in space-constrained, thermally demanding applications such as 5G baseband units and programmable logic I/O expansion.

FAQ

What is the minimum operating voltage for refA and refB?

The LSF0102GSX supports refA and refB down to 0.95 V, enabling compatibility with ultra-low-voltage logic families such as sub-1 V I/O standards used in advanced mobile SoCs. This is confirmed in Section 2 of the datasheet under "Bidirectional voltage level translation between: 0.95 V and 1.8 V, 2.5 V, 3.3 V and 5.0 V".

Can LSF0102GSX translate between 1.2 V and 5.0 V on the same channel?

Yes - the device explicitly supports 1.2 V ↔ 5.0 V translation per channel, as listed in Section 2's "Bidirectional voltage level translation" table. This is achieved by setting refA = 1.2 V and refB = 5.0 V (or vice versa), with 5 V-tolerant I/O pins ensuring safe operation on the higher-voltage side.

Does LSF0102GSX require external pull-up resistors?

Yes - external pull-up resistors are required on both A-side and B-side signal lines to define logic HIGH levels, as the device contains no internal pull-ups. The datasheet Fig. 5 test circuit shows Rpu = 200 kΩ for characterization, but actual values depend on bus capacitance and speed requirements (e.g., 2.2 kΩ for 400 kHz I²C).

Is LSF0102GSX qualified for automotive applications?

No - the LSF0102GSX is specified for –40 °C to +125 °C operation but is not AEC-Q200 qualified or automotive-graded. Nexperia explicitly states in Section 16 that "Unless this data sheet expressly states that this specific Nexperia product is automotive qualified, the product is not suitable for automotive use."