Nexperia USA Inc. 74LVC16240ADGG,512

Overview

74LVC16240ADGG,512 from Nexperia is a 16-bit inverting 3-state buffer/line driver in TSSOP48 package, featuring four independent output-enable inputs (1OE–4OE), 5 V-tolerant I/O, and operation from 1.2 V to 3.6 V supply. It supports mixed-voltage interfacing between 3.3 V logic and legacy 5 V systems, with IOFF protection for partial power-down. Used in address/data bus buffering for industrial microcontroller peripherals.

For engineers reviewing the 74LVC16240ADGG,512 datasheet, 74LVC16240ADGG,512 pinout, 74LVC16240ADGG,512 application, or 74LVC16240ADGG,512 equivalent, key selection criteria include 5 V tolerance on all I/O pins, guaranteed -40 °C to +125 °C operation, propagation delay ≤4.2 ns at 3.3 V, 3-state enable/disable timing, and TSSOP48 thermal and routing constraints.

Technical Context

This device implements four independent 4-bit inverting buffers, each controlled by its own active-low output-enable input (1OE–4OE). Each group drives four outputs (e.g., 1Y0–1Y3) from corresponding inverted inputs (1A0–1A3), enabling flexible partitioning as one 16-bit, two 8-bit, or four 4-bit drivers.

IOFF circuitry ensures outputs enter high-impedance state when VCC = 0 V, blocking backflow current up to 5.5 V on I/O pins during power sequencing. Input thresholds comply with JEDEC JESD8-7A, JESD8-5A, and JESD8-C standards across 1.65 V–3.6 V supply ranges.

Key Specifications

Pinout & Package

TSSOP48 (SOT362-1) package: plastic thin shrink small outline, 48 leads, 6.1 mm body width, 0.5 mm lead pitch, 1.2 mm max height. Designed for fine-pitch surface-mount assembly with low thermal resistance (RθJA ≈ 90 K/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit inverting buffer applications.

Compared with SN74LVC16240ADGGR, the 74LVC16240ADGG,512 offers identical functionality with Nexperia-specific qualification and traceability; versus 74ALVC16240PW,118, it trades peak speed for broader voltage flexibility and IOFF safety-critical for battery-powered or mixed-rail systems.

Availability

74LVC16240ADGG,512 is available at Aetrix Electronics and suitable for industrial PLC backplane buffering, automotive body control module I/O expansion, and medical imaging data acquisition requiring stable component supply across extended temperature ranges.

Supply support for 74LVC16240ADGG,512 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, analog, and MOSFET solutions, with manufacturing rooted in process technology leadership and automotive-grade quality systems.

The 74LVC logic family delivers low-voltage, 5 V-tolerant interface ICs optimized for energy-efficient industrial and consumer applications where mixed-supply interoperability and robust ESD performance are essential.

FAQ

Can 74LVC16240ADGG,512 operate with VCC = 1.2 V while driving 5 V-tolerant loads?

Yes. The device is fully specified down to 1.2 V supply and maintains 5 V tolerance on all I/O pins across the entire operating range. At 1.2 V, input thresholds scale to 0.65×VCC (≈0.78 V), and outputs deliver valid logic levels compatible with downstream 5 V receivers via clamping diode conduction-no external components required.

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

The datasheet specifies dynamic characteristics with 30–50 pF loads and 500 Ω–1 kΩ termination. For guaranteed tpd ≤4.2 ns and skew ≤1.0 ns, total load capacitance-including PCB trace, connector, and receiver input-must remain ≤50 pF. Exceeding this increases propagation delay nonlinearly and may violate setup/hold margins in synchronous systems.

How does IOFF protection behave when VCC is ramped slowly during power-up?

IOFF activates when VCC falls below ~0.8 V, forcing outputs into high-impedance before supply rails collapse. During slow ramp-up, outputs remain disabled until VCC exceeds the minimum functional threshold (~1.2 V), preventing glitch-induced bus contention. This behavior is verified across -40 °C to +125 °C per JEDEC JESD78.

Are the four OE inputs internally isolated, or do they share internal logic resources?

All four OE inputs (1OE–4OE) drive independent output-stage enable gates with no shared logic or timing paths. Each controls exactly four outputs (e.g., 1OE → 1Y0–1Y3) with identical enable/disable delays (ten/tdis), allowing staggered bus arbitration or selective channel gating without cross-talk or timing interaction.