Nexperia USA Inc. 74LVC2G126GS,115

Overview

74LVC2G126GS,115 from Nexperia is a dual 3-state bus buffer/line driver with independent output enable (1OE, 2OE) control, designed for level translation between 1.65 V and 5.5 V logic domains. It features Schmitt-trigger inputs for noise immunity, ±24 mA output drive at 3.0 V, IOFF partial power-down protection, and operates across –40 °C to +125 °C in the XSON8 (SOT1203) package.

For engineers reviewing the 74LVC2G126GS,115 datasheet, 74LVC2G126GS,115 pinout, 74LVC2G126GS,115 application, or 74LVC2G126GS,115 equivalent, this device serves as a robust bidirectional interface solution in mixed-voltage I/O expansion, memory address buffering, and FPGA/CPLD peripheral interfacing where low-power, high-noise-immunity, and safe power sequencing are required.

Technical Context

The 74LVC2G126GS,115 implements two independent non-inverting buffers, each with active-HIGH 3-state output enable. Its IOFF circuitry disables outputs and blocks backflow current when VCC = 0 V, enabling hot-swap and partial power-down operation. Inputs tolerate up to 5.5 V regardless of VCC, supporting 3.3 V ↔ 5 V bidirectional translation.

Schmitt-trigger input thresholds provide hysteresis (typically 0.3–0.4 V), enabling reliable operation with slow-rising signals. Propagation delay ranges from 0.5 ns (at 5 V) to 12.5 ns (at 1.65 V), while enable/disable times remain under 4.4 ns across full voltage and temperature range.

Key Specifications

Pinout & Package

XSON8 package (SOT1203): ultra-thin, leadless, 1.35 mm × 1.0 mm × 0.35 mm body with 8 solderable terminals; optimized for high-density PCBs and automated reflow assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual 3-state buffer applications.

Compared with SN74LVC2G126DBVR, the 74LVC2G126GS,115 offers 60 % smaller PCB area and lower thermal resistance in high-density designs; versus 74LVC2G125GS,115, it provides non-inverting signal path integrity essential for address/data transparency.

Availability

74LVC2G126GS,115 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and FPGA-based embedded systems requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for 74LVC2G126GS,115 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 logic, analog, and MOSFET solutions for industrial, automotive, and consumer markets.

The 74LVC2G126 belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, engineered for robust mixed-voltage interoperability, low static/dynamic power, and seamless integration into space-constrained, thermally demanding embedded systems.

FAQ

Can 74LVC2G126GS,115 operate with VCC = 1.65 V while accepting 5 V inputs?

Yes. The device guarantees overvoltage-tolerant inputs up to 5.5 V independent of VCC, including at the minimum 1.65 V supply. Input clamp diodes and internal protection circuitry ensure no damage or excessive leakage occurs, making it suitable for translating from legacy 5 V logic to modern ultra-low-voltage controllers.

What is the maximum capacitive load the outputs can drive reliably?

The outputs are characterized to drive up to 50 pF loads with specified timing (see Table 10). At VCC = 3.3 V and 24 mA drive, rise/fall times remain ≤2.5 ns into 50 pF. For heavier loads (>75 pF), propagation delay increases linearly; derating curves in Section 8 confirm stable operation up to 100 pF with minor timing impact.

Does the IOFF feature work when VCC is disconnected but GND remains connected?

Yes. IOFF activates when VCC = 0 V (or near 0 V), disabling both outputs and blocking current flow from any input or output terminal into the powered-down IC. This behavior is verified down to VCC = 0.1 V and holds across –40 °C to +125 °C, ensuring safe operation during brown-out or staged power-down sequences.

How does the Schmitt-trigger input improve noise immunity compared to standard CMOS inputs?

Schmitt-trigger inputs provide hysteresis (VIH − VIL ≈ 0.3–0.4 V), meaning the threshold for detecting a rising edge is ~0.2 V higher than for a falling edge. This prevents multiple toggles on slow or noisy signals - e.g., long PCB traces or unshielded wires - eliminating the need for external RC filters or debounce firmware in sensor interface applications.