Nexperia USA Inc. 74LVC2G240DC,125

Overview

74LVC2G240DC,125 from Nexperia is a dual inverting buffer/line driver with 3-state outputs, designed for bidirectional signal translation between 3.3 V and 5 V logic domains. It features Schmitt-trigger inputs for noise immunity, ±24 mA output drive at 3.0 V, IOFF power-down protection, and operates across -40 °C to +125 °C. Used in bus interface circuits requiring level-shifting and output isolation.

For engineers reviewing the 74LVC2G240DC,125 datasheet, 74LVC2G240DC,125 pinout, 74LVC2G240DC,125 application, or 74LVC2G240DC,125 equivalent, key selection criteria include 3-state enable timing (ten ≤ 4.8 ns), input voltage tolerance up to 5.5 V, low ICC supply current (≤4 μA), and VSSOP8 package compatibility with high-density PCB layouts.

Technical Context

This device implements two independent inverting buffers, each with active-low 3-state enable control (1OE, 2OE). Output transitions occur only when the corresponding OE is LOW; HIGH on OE forces the output into high-impedance state, enabling bus sharing without contention.

Schmitt-trigger inputs provide hysteresis (typ. 0.3–0.5 V) for robust operation with slow-rising signals, while IOFF circuitry ensures zero backflow current during partial power-down-critical for hot-swap and mixed-voltage system integrity.

Key Specifications

Pinout & Package

VSSOP8 package (SOT765-1): plastic very thin shrink small outline, 8 leads, body width 2.3 mm, lead pitch 0.5 mm, pin 1 index in lower-left corner below marking "V40".

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual inverting buffer/line driver applications.

Compared with SN74LVC2G240DBVR and 74LVC2G240GT,115, the 74LVC2G240DC,125 offers optimal balance of compact VSSOP8 packaging, proven manufacturability in standard SMT lines, and identical electrical behavior-making it ideal for high-volume industrial control modules.

Availability

74LVC2G240DC,125 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, medical instrument data acquisition, and test equipment signal conditioning requiring stable component supply across extended temperature ranges.

Supply support for 74LVC2G240DC,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 focused on high-volume, high-reliability logic, discrete, and MOSFET solutions, with leadership in automotive-grade and industrial-grade components.

The 74LVC2G240 belongs to Nexperia's LVC logic family-designed specifically for low-voltage, mixed-signal interfacing in space- and power-constrained embedded systems.

FAQ

Can 74LVC2G240DC,125 operate with VCC = 1.8 V while driving 5 V-tolerant loads?

Yes. At VCC = 1.8 V, the device maintains full 5 V input tolerance and 5.5 V output voltage rating. VOH remains ≥1.2 V (min) and VOL ≤0.45 V (max) under 4 mA load, satisfying 1.8 V logic thresholds while safely interfacing with 5 V peripherals via its 5 V-tolerant I/O architecture.

What is the maximum capacitive load the outputs can drive without signal integrity degradation?

The outputs are characterized up to 50 pF load capacitance (per Table 10). With CL = 50 pF and RL = 500 Ω, propagation delay remains ≤5.8 ns at VCC = 3.0–3.6 V. For heavier loads (>50 pF), rise/fall times increase linearly-designers should verify timing margins using CPD = 18 pF (enabled) and the dynamic power formula provided in Section 11.

Does the IOFF feature protect against back-current when only one supply rail is powered?

Yes. When VCC = 0 V, IOFF limits output leakage to ±2 μA (max) even if 5.5 V is applied to any input or output pin. This prevents reverse current flow through the substrate or parasitic paths, ensuring safe operation during power sequencing, partial shutdown, or hot-swap events in multi-rail systems.

How does the Schmitt-trigger input improve reliability in noisy environments?

Schmitt-trigger inputs provide ≥0.3 V hysteresis (typical), meaning VIH and VIL differ by that amount. This prevents multiple output transitions on slowly rising/falling signals-such as mechanical switch bounce or long PCB traces exposed to EMI-ensuring clean, single-edge responses critical for control line integrity in factory automation and motor drives.