Nexperia USA Inc. 74AUP2G126DC,125

Overview

74AUP2G126DC from Nexperia is a dual 3-state buffer/line driver with Schmitt-trigger inputs, operating across 0.8 V to 3.6 V supply, delivering ICC ≤ 1.4 μA (max at −40 °C to +125 °C), tpd ≤ 4.4 ns (VCC = 3.3 V, CL = 5 pF), and IOFF-enabled partial power-down protection. It serves in low-power I/O expansion and level-shifting interfaces in battery-powered sensor nodes and portable MCU peripherals.

For engineers reviewing the 74AUP2G126DC datasheet, 74AUP2G126DC pinout, 74AUP2G126DC application, or 74AUP2G126DC equivalent, key selection criteria include its ultra-low static current, guaranteed operation down to 0.8 V, Schmitt-trigger noise immunity, and IOFF backflow prevention during system sleep states.

Technical Context

This device implements two independent non-inverting buffers, each with active-HIGH output enable (nOE) controlling high-impedance (Z) state. Schmitt-trigger inputs provide hysteresis (typ. 0.3 × VCC) for robust noise rejection on slow-rising signals.

Its IOFF circuit actively disables outputs when VCC = 0 V, limiting backflow current to ±0.75 μA, enabling safe hot-insertion and multi-rail partial power-down. Input tolerance extends to 3.6 V regardless of VCC, supporting mixed-voltage interfacing.

Key Specifications

Pinout & Package

VSSOP8 package (SOT765-1): plastic very thin shrink small outline, 8 leads, 2.3 mm body width, 0.5 mm pitch, exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC2G126DCUR and 74LVC2G126GM,132, the 74AUP2G126DC uniquely combines sub-1 V operation, <1.5 μA ICC, and certified IOFF-making it the sole option for ultra-low-power, mixed-voltage, and fail-safe partial power-down designs.

Availability

74AUP2G126DC is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable MCU I/O expansion, automotive body control modules, and battery-powered data loggers requiring stable component supply across extended temperature ranges.

Supply support for 74AUP2G126DC 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 specializing in high-performance, energy-efficient logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74AUP (Advanced Ultra-low Power) product line targets battery-operated and energy-sensitive applications, emphasizing sub-1 V operation, nanoamp ICC, and robust IOFF functionality for modern low-power system architectures.

FAQ

What is the minimum supply voltage at which 74AUP2G126DC guarantees full functionality?

The device is fully specified from 0.8 V to 3.6 V. At VCC = 0.8 V, VIH is guaranteed ≥ 0.56 V and VOL ≤ 0.11 V with 20 μA load, and tpd remains ≤ 20.6 ns (CL = 5 pF). All DC and AC parameters in Table 6 and Table 7 apply across this full range.

How does the IOFF feature behave when VCC is ramping down during system shutdown?

IOFF activates automatically when VCC drops below ~0.2 V, clamping output leakage to ±0.75 μA regardless of input/output voltage levels. This prevents reverse current flow from live 3.3 V buses into a de-energized 74AUP2G126DC, protecting upstream drivers and meeting IEC 61000-4-2 system-level ESD robustness.

Can 74AUP2G126DC drive a 50 pF load while maintaining timing specifications?

No-datasheet timing (tpd, ten, tdis) is characterized only up to CL = 30 pF. At CL = 50 pF, propagation delay increases beyond specification (e.g., >8 ns at VCC = 3.3 V), and output edge rates degrade. For >30 pF loads, add series termination or reduce trace length to maintain signal integrity.

Is the Schmitt-trigger hysteresis value fixed or voltage-dependent?

Hysteresis is proportional to VCC: typical ΔV = 0.3 × VCC, with minimum hysteresis ≥ 0.25 × VCC across −40 °C to +125 °C. At VCC = 1.2 V, hysteresis is ≥300 mV; at VCC = 3.3 V, it is ≥825 mV-ensuring consistent noise margin across all supported supply voltages.