Nexperia USA Inc. LSF0204GU12X

Overview

LSF0204GU12X from Nexperia is a 4-channel bidirectional multi-voltage level translator supporting open-drain and push-pull interfaces, with ≤100 MHz up-translation and ≥100 MHz down-translation at ≤30 pF load, 5 V-tolerant I/O pins, and no direction pin required. It enables voltage translation between 0.8 V–5.0 V pairs (e.g., 1.2 V ↔ 3.3 V, 1.8 V ↔ 5.0 V) in I²C, SMBus, and GPIO interconnects.

For engineers reviewing the LSF0204GU12X datasheet, LSF0204GU12X pinout, LSF0204GU12X application, or LSF0204GU12X equivalent, key selection criteria include channel-wise independent V_refA/V_refB configuration, EN-referenced enable logic, low R_ON (<7 Ω typical), hot-insertion capability, and operation across –40 °C to +125 °C.

Technical Context

The LSF0204GU12X uses passive MOSFET-based translation architecture with internal 400 kΩ pull-up on EN referenced to refA, enabling automatic bidirectional signal flow without control logic. Translation direction is determined dynamically by relative voltage levels on A-side and B-side channels.

Each channel operates independently with separate refA and refB reference inputs, allowing mixed-voltage domain bridging-e.g., A1 at 1.2 V ↔ B1 at 3.3 V while A2 at 1.8 V ↔ B2 at 5.0 V-within a single XQFN12 package. EN activation enables all four channels simultaneously with propagation delays as low as 0.2 ns (t_PLH, CL = 15 pF).

Key Specifications

Pinout & Package

XQFN12 plastic extremely thin quad flat package (no leads), 1.70 × 2.00 × 0.50 mm body, 12 terminals, wettable flank compatible for automated optical inspection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TXS0104E and PCA9306, the LSF0204GU12X delivers broader voltage pairing (0.8 V–5.0 V), higher speed (≥100 MHz), integrated EN control, and full 5 V I/O tolerance-making it the sole option for mixed-domain, high-speed, and industrial-grade translation where reliability and design flexibility are critical.

Availability

LSF0204GU12X is available at Aetrix Electronics and suitable for industrial PLC I/O modules, telecom SFP+ management, server BMC subsystems, and edge IoT sensor hubs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LSF0204GU12X 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 devices-with manufacturing rooted in process efficiency and automotive-grade quality systems.

The LSF series targets high-speed, flexible voltage translation in space-constrained industrial and communications equipment, emphasizing zero-direction-pin operation, wide V_I/O compatibility, and robust thermal performance from –40 °C to +125 °C.

FAQ

Can LSF0204GU12X translate between 0.8 V and 5.0 V in a single channel?

Yes. The device supports 0.8 V ↔ 5.0 V translation per channel when refA = 0.8 V and refB = 5.0 V, verified per Table 2 in the datasheet. This pairing maintains ≥100 MHz down-translation (5.0 V → 0.8 V) and ≤80 MHz up-translation (0.8 V → 5.0 V) at CL = 30 pF, with R_ON < 12 Ω under 10 mA load.

What happens to A/B pins when EN is LOW?

When EN is driven LOW (relative to refA), all A1–A4 and B1–B4 pins enter high-impedance OFF-state with C_io(off) ≤ 6 pF, effectively isolating both voltage domains. Propagation delay from EN LOW to full isolation is ≤45 ns (t_PZL, CL = 50 pF), preventing bus contention during power sequencing.

Is external pull-up resistance required on A or B sides?

No external pull-ups are required for basic operation-the LSF0204GU12X relies on internal MOSFET conduction and system-level termination. However, for open-drain buses (e.g., I²C), external pull-ups must be placed on the B-side (higher-voltage domain) per Figure 4 in the datasheet to ensure correct logic thresholds and rise time control.

How does LSF0204GU12X handle mismatched refA and refB slew rates?

The device tolerates independent refA/refB ramp rates up to 10 ns/V (per Table 5), meaning refA can stabilize before refB or vice versa without malfunction. Functional testing confirms correct translation initiation once both references exceed 0.3× their nominal value, with no observed metastability or glitching during power-up sequencing.