Nexperia USA Inc. 74LVC1G240GXH

Overview

74LVC1G240GXH from Nexperia is a single-channel inverting buffer/line driver with 3-state output and output enable (OE) control, operating across 1.65 V to 5.5 V supply, delivering ±24 mA drive at 3.0 V, featuring Schmitt-trigger inputs for noise immunity and IOFF partial power-down protection. It serves as a level translator between 3.3 V and 5 V logic domains in compact embedded interfaces.

For engineers reviewing the 74LVC1G240GXH datasheet, 74LVC1G240GXH pinout, 74LVC1G240GXH application, or 74LVC1G240GXH equivalent, key selection considerations include its X2SON5 (SOT1226-3) 5-terminal thermal-enhanced package, 3-state timing (tdis ≤ 5.5 ns at 5 V), IOFF-enabled backflow prevention, and mixed-voltage interface capability.

Technical Context

This device implements a single inverting logic gate with active-low 3-state control: OE HIGH forces Y into high-impedance OFF-state, while OE LOW enables inverted A→Y propagation. Its Schmitt-trigger inputs tolerate slow-rising signals and improve noise margin in noisy environments.

The IOFF circuit actively disables outputs when VCC = 0 V, blocking reverse current flow from powered downstream nodes - critical for hot-swap and partial-power-down systems. Input overvoltage tolerance up to 5.5 V allows safe interfacing with 5 V sources even when VCC is 1.8 V or 3.3 V.

Key Specifications

Pinout & Package

X2SON5 package (SOT1226-3): 0.8 mm × 0.8 mm × 0.32 mm body, 5 copper terminals, no leads, thermal pad on underside, pin 1 marked by lower-left corner notch below marking "V2".

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G240DBVR, the 74LVC1G240GXH offers 75% smaller area and superior thermal performance; versus 74LVC1G04GW, it adds essential 3-state control and IOFF for modern low-power system architectures.

Availability

74LVC1G240GXH is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB-C power delivery control, and automotive body control modules requiring stable component supply across extended temperature ranges and high-volume production cycles.

Supply support for 74LVC1G240GXH 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, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.

The 74LVC1G240 belongs to Nexperia's LVC logic family - engineered for low-voltage operation, mixed-signal interoperability, and robustness in thermally constrained and electrically noisy embedded systems.

FAQ

What is the maximum input voltage the 74LVC1G240GXH can tolerate when VCC = 1.8 V?

The device accepts inputs up to 5.5 V regardless of VCC level, enabling safe interfacing with 5 V TTL or CMOS sources even when powered from 1.8 V. This overvoltage tolerance is guaranteed per datasheet Table 5 and eliminates need for external clamping components in mixed-voltage designs.

Does the 74LVC1G240GXH support hot-plug operation?

Yes - its IOFF circuitry actively disables outputs and limits back-current to ±2 μA when VCC = 0 V, satisfying hot-plug safety requirements. This allows insertion/removal while downstream circuits remain powered, preventing latch-up or damage during live system maintenance.

How does the Schmitt-trigger input improve noise immunity?

Schmitt-trigger inputs provide hysteresis (typically 0.3–0.5 V depending on VCC), meaning the threshold for rising edges differs from falling edges. This prevents multiple output transitions caused by slow or noisy input edges, making the device reliable in electrically harsh environments like motor drives or industrial PLC I/O modules.

Can the 74LVC1G240GXH drive a 50 pF load at 100 MHz?

No - while it drives 50 pF loads with tpd ≤ 4.6 ns at VCC = 3.3 V (Table 8), dynamic power dissipation rises significantly at high frequency. CPD = 25 pF means PD ≈ 8.3 mW at 100 MHz and 3.3 V, exceeding typical X2SON5 thermal limits. Use below 25 MHz for sustained operation with 50 pF loads.