Nexperia USA Inc. 74LVC240APW,118

Overview

74LVC240APW,118 from Nexperia is an octal inverting 3-state buffer/line driver with dual independent output enables (1OE, 2OE), 5 V-tolerant I/O, Schmitt-trigger inputs, and IOFF partial power-down protection. It operates from 1.2 V to 3.6 V supply, supports mixed-voltage translation between 3.3 V and 5 V systems, and is rated for -40 °C to +125 °C. It is used in bus interface, memory address buffering, and level-shifting applications in industrial control and embedded computing.

For engineers reviewing the 74LVC240APW,118 datasheet, 74LVC240APW,118 pinout, 74LVC240APW,118 application, or 74LVC240APW,118 equivalent, key selection criteria include 5 V input tolerance, IOFF-enabled safe power-down behavior, propagation delay ≤7.0 ns at 3.3 V, dual 4-bit enable control, and TSSOP20 package compatibility with high-density PCB layouts.

Technical Context

This device implements two independent 4-bit inverting buffers, each controlled by its own active-low 3-state enable (1OE for outputs Y0–Y3; 2OE for Y0–Y3 of second group). All inputs feature Schmitt-trigger action to tolerate slow-rising signals and reject noise, while the IOFF circuit actively disables outputs when VCC = 0 V to prevent backflow current during partial power-down sequences.

It complies with JEDEC standards JESD8-7A (1.65–1.95 V), JESD8-5A (2.3–2.7 V), and JESD8-C/JESD36 (2.7–3.6 V), and supports 5.5 V absolute max input voltage - enabling direct interfacing with legacy 5 V TTL logic without external level shifters.

Key Specifications

Pinout & Package

TSSOP20 plastic thin shrink small outline package (SOT360-1), 20-pin, body width 4.4 mm, 0.65 mm pitch, exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC240APWR, the 74LVC240APW,118 offers identical performance in a Nexperia-qualified TSSOP20 package with tighter parametric binning consistency; versus 74LVC240AD,118, it delivers superior thermal performance and 35 % smaller PCB area at marginally higher assembly cost.

Availability

74LVC240APW,118 is available at Aetrix Electronics and suitable for industrial automation interfaces, embedded memory subsystems, and mixed-voltage sensor aggregation requiring stable component supply across multi-year production cycles.

Supply support for 74LVC240APW,118 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 automotive, industrial, and consumer markets.

The 74LVC240A belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, designed specifically for energy-efficient, mixed-voltage system interfacing with robust ESD immunity and partial power-down safety.

FAQ

Can 74LVC240APW,118 safely interface a 5 V sensor output with a 1.8 V microcontroller input?

No - while inputs tolerate up to 5.5 V, the device's outputs swing only between GND and VCC (1.8 V max). To drive a 1.8 V MCU input from a 5 V sensor, configure the 74LVC240APW,118 as an input buffer only: connect sensor to 1A0, tie 1OE low, and read 1Y0 (inverted) at 1.8 V logic levels. Do not use it as a level translator in output direction.

What is the maximum capacitive load this device can drive while maintaining guaranteed timing?

Per datasheet Table 9, the device is characterized with 30 pF (for VCC ≤2.7 V) and 50 pF (for VCC ≥2.7 V) loads using 500 Ω termination. At VCC = 3.3 V and CL = 50 pF, tpd remains ≤5.5 ns and tdis ≤7.5 ns. Driving >50 pF may increase propagation delay and output rise/fall times beyond specification limits.

Does the IOFF feature protect against backflow when only VCC is disconnected but GND remains connected?

Yes - IOFF activates when VCC = 0 V regardless of GND state. With GND connected and VCC floating or grounded, the internal circuitry forces all outputs into high-impedance mode, limiting OFF-state leakage to ≤±20 μA even with 5.5 V applied to any I/O pin, satisfying IEC 61000-4-2 system-level ESD isolation requirements.

Is the TSSOP20 package (SOT360-1) compatible with standard reflow profiles for lead-free assembly?

Yes - Nexperia specifies the SOT360-1 package for Pb-free reflow per JEDEC J-STD-020 Rev. E. Peak temperature must not exceed 260 °C, with time above 217 °C limited to 60–150 seconds. The package's 0.65 mm pitch and exposed pad (non-functional) require precise stencil design and nitrogen-assisted reflow for optimal solder joint reliability.