Nexperia USA Inc. 74LVC1G240GWH

Overview

74LVC1G240 from Nexperia is a single-channel inverting buffer/line driver with 3-state output and output enable (OE) control, operating from 1.65 V to 5.5 V supply, delivering ±24 mA drive at 3.0 V, and featuring Schmitt-trigger inputs for noise immunity in mixed-voltage I/O interfacing between 3.3 V and 5 V systems.

For engineers reviewing the 74LVC1G240 datasheet, 74LVC1G240 pinout, 74LVC1G240 application, or 74LVC1G240 equivalent, this device supports voltage translation, bus isolation, and level-shifting in space-constrained digital logic interfaces where low-power, high-noise-immunity, and partial power-down capability are required.

Technical Context

The 74LVC1G240 implements a single inverting logic gate with active-low 3-state control via OE: when OE is HIGH, Y enters high-impedance OFF-state; when OE is LOW, Y = NOT(A). Its IOFF circuitry disables output leakage during partial power-down, preventing backflow current when VCC = 0 V.

Schmitt-trigger inputs tolerate slow rise/fall times and provide hysteresis (typ. 0.3–0.5 V), while overvoltage-tolerant inputs accept up to 5.5 V regardless of VCC, enabling direct connection to 5 V TTL outputs even when powered at 1.65 V–3.3 V.

Key Specifications

Pinout & Package

TSSOP5 (SOT353-1) package: plastic thin shrink small outline, 5-pin, 1.25 mm body width, 0.65 mm pitch, exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G04DBVR and 74LVC1G125GW, the 74LVC1G240 uniquely combines inversion, 3-state control, and overvoltage-tolerant inputs in a 5-pin TSSOP - making it optimal for compact, mixed-voltage bus arbitration and fault-isolated signal conditioning.

Availability

74LVC1G240 is available at Aetrix Electronics and suitable for industrial sensor interface, USB signal isolation, and automotive body control modules requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for 74LVC1G240 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 for industrial, automotive, and consumer applications.

The 74LVC1G240 belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, designed specifically for low-power, mixed-voltage digital interfacing in space- and energy-constrained embedded systems.

FAQ

Can the 74LVC1G240 operate with VCC = 1.65 V while accepting 5 V inputs?

Yes. The device features overvoltage-tolerant inputs rated to 5.5 V regardless of VCC level. At VCC = 1.65 V, VIH is 0.65 × VCC (≈1.07 V) and VIL is 0.35 × VCC (≈0.58 V), allowing reliable detection of 5 V TTL logic levels without external resistors or clamps.

What happens to the output when VCC = 0 V and OE is HIGH?

When VCC = 0 V and OE is HIGH, the IOFF circuit activates, disabling the output stage and limiting leakage current to ≤±2 μA. This prevents damaging backflow current from other powered rails through the Y pin, satisfying JEDEC JESD78 requirements for partial power-down safety.

Is the 74LVC1G240 pin-compatible with other SOT353-1 logic devices?

No - while the TSSOP5 (SOT353-1) package is mechanically identical across many Nexperia logic devices, pin functions differ. For example, 74LVC1G125GW uses Pin 1 as OE but Pin 2 as A and Pin 4 as Y (same as 74LVC1G240), whereas 74LVC1G04DBVR has no OE and uses Pin 1 as input and Pin 2 as output. Always verify pin mapping per datasheet.

Does the Schmitt-trigger input affect propagation delay specifications?

Yes - the Schmitt-trigger adds ~0.3 ns to typical propagation delay versus a standard CMOS input, but improves noise margin by 0.4 V hysteresis at 3.3 V. Static timing analysis must use the published tpd values (e.g., 1.9 ns typ at VCC = 3.3 V), which already include Schmitt-trigger latency under standard test conditions.