Nexperia USA Inc. 74LVC2G126GM,125

Overview

74LVC2G126GM,125 from Nexperia is a dual 3-state bus buffer/line driver with independent output enable (nOE) control per channel, Schmitt-trigger inputs for noise immunity, IOFF partial power-down protection, and mixed-voltage translation capability (1.65 V to 5.5 V supply, 5.5 V-tolerant inputs). It supports bidirectional signal routing in compact logic interfaces such as I²C level-shifting, microcontroller GPIO expansion, and FPGA peripheral buffering.

For engineers reviewing the 74LVC2G126GM,125 datasheet, 74LVC2G126GM,125 pinout, 74LVC2G126GM,125 application, or 74LVC2G126GM,125 equivalent, this device is selected for low-voltage logic interfacing where rail-to-rail input tolerance, fast propagation delay (<4 ns at 3.3 V), and guaranteed high-impedance isolation during power sequencing are required.

Technical Context

This dual buffer implements two independent non-inverting channels, each with active-HIGH output enable (1OE, 2OE) and Schmitt-trigger input thresholds-enabling robust operation with slow-rising signals and high noise margins. The IOFF circuit actively disables outputs when VCC = 0 V, blocking backflow current during partial power-down sequences.

It operates across 1.65 V–5.5 V supply range with guaranteed performance up to +125 °C, supports JEDEC-compliant voltage standards (JESD8-7/5/B/36), and delivers ±24 mA drive strength at 3.0 V-sufficient for driving 50 pF loads with sub-5 ns propagation delay.

Key Specifications

Pinout & Package

XSON8 package (SOT1089): 1.35 × 1.0 × 0.5 mm, no leads, 8-terminal surface-mount footprint optimized for high-density PCB layouts and thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC2G126DBVR, the 74LVC2G126GM,125 offers superior thermal performance and 40% smaller PCB area; versus 74AUP2G126GM,125, it trades 1.2 ns speed gain for full 5 V input tolerance and broader supply flexibility-critical for industrial multi-rail designs.

Availability

74LVC2G126GM,125 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller GPIO multiplexing, and FPGA configuration interfaces requiring stable component supply across extended temperature ranges and mixed-voltage environments.

Supply support for 74LVC2G126GM,125 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 delivering high-performance logic, analog, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for industrial, automotive, and consumer applications.

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

FAQ

What is the maximum input voltage the 74LVC2G126GM,125 can tolerate when powered from 1.8 V?

The device accepts input voltages up to 5.5 V regardless of VCC level, verified by absolute maximum ratings and functional testing per Table 5. This overvoltage tolerance enables safe connection to 5 V sources while operating from 1.8 V, eliminating external clamping components in mixed-rail designs.

Does the 74LVC2G126GM,125 support hot-swap or partial power-down operation?

Yes-the integrated IOFF circuit actively disables outputs and limits leakage to <±2 μA when VCC = 0 V, preventing back-current flow during hot-insertion or staggered power sequencing. This behavior is validated per JEDEC JESD78 and confirmed in Section 1 of the datasheet.

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

Schmitt-trigger inputs provide hysteresis (~0.3 V at 3.3 V), meaning the rising and falling input thresholds differ. This prevents oscillation on slow or noisy edges and rejects transient spikes below the hysteresis window-verified by VIH/VIL specifications in Table 7 and functional diagram in Figure 2.

Can the 74LVC2G126GM,125 drive a 50 pF capacitive load at 10 MHz with clean signal integrity?

Yes-dynamic characteristics in Table 8 confirm tpd ≤ 4.3 ns at VCC = 3.0 V into 50 pF (per test conditions in Table 10), and output drive strength of ±24 mA ensures adequate slew rate. Measured CPD = 17 pF (enabled) confirms low dynamic power dissipation under these conditions.