NXP Semiconductors 74ALVT16240DL,118

Overview

74ALVT16240DL,118 from NXP Semiconductors (formerly Philips) is a 16-bit inverting 3-state buffer/driver designed for bus interface applications with dual supply compatibility at 2.5 V or 3.3 V and 5 V I/O tolerance. It features four independent active-low output enable inputs (1OE–4OE), each controlling four outputs, and delivers ±64 mA/−32 mA drive capability. Used in high-speed digital backplanes and memory address/data buses.

For engineers reviewing the 74ALVT16240DL,118 datasheet, 74ALVT16240DL,118 pinout, 74ALVT16240DL,118 application, or 74ALVT16240DL,118 equivalent, this device supports live insertion, includes bus-hold inputs to eliminate external pull-ups, and provides sub-3 ns propagation delay at 3.3 V - critical for timing-critical 16-bit parallel interfaces.

Technical Context

The 74ALVT16240DL,118 implements a BiCMOS architecture enabling TTL-compatible input thresholds and 5 V-tolerant I/O while operating from 2.5 V or 3.3 V supplies. Its quad-gated 4-bit sections allow selective bus isolation without affecting other data lanes.

Each output stage supports true 3-state operation with power-up 3-state behavior and latch-up protection exceeding 500 mA per JESD78. Bus-hold circuitry maintains valid logic states on unused inputs at ±130 µA hold current (VCC = 3 V), eliminating external biasing components.

Key Specifications

Pinout & Package

74ALVT16240DL,118 is housed in a plastic shrink small outline package (SSOP48) per SOT370-1, with 48 leads, 0.5 mm pitch, and 7.5 mm body width. Pin 1 is marked by a notch or dot; pin numbering follows standard counter-clockwise convention from top-left corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74ALVC16240DGGR and 74LVT16244ADGG,118, the 74ALVT16240DL,118 uniquely combines inversion, 5 V I/O tolerance, integrated bus-hold, and higher drive strength - making it optimal for legacy-compatible, high-reliability 16-bit bus interfaces where signal integrity and design simplicity are critical.

Availability

74ALVT16240DL,118 is available at Aetrix Electronics and suitable for memory subsystems, industrial backplanes, FPGA I/O expansion, and PCI-to-ISA bridging requiring stable component supply and long-term obsolescence management.

Supply support for 74ALVT16240DL,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

NXP Semiconductors, formerly Philips Semiconductors, is a global leader in high-performance logic and interface solutions, delivering robust, automotive-qualified and industrial-grade semiconductor products.

The 74ALVT16240DL,118 belongs to the ALVT (Advanced Low-Voltage TTL) family, engineered specifically for mixed-voltage digital systems requiring 5 V interoperability, low-power 2.5/3.3 V core operation, and high-speed bus driving capability.

FAQ

What is the maximum operating voltage on the I/O pins of the 74ALVT16240DL,118?

The 74ALVT16240DL,118 supports input and output voltages up to 5.5 V regardless of VCC supply level (2.5 V or 3.3 V). This 5 V tolerance is explicitly specified in Table 5 (Limiting Values) and enables safe interfacing with legacy 5 V logic without external protection circuitry. The device remains functional and undamaged even when driven by 5 V signals while powered at 2.5 V.

Does the 74ALVT16240DL,118 include bus-hold functionality, and how does it work?

Yes, the 74ALVT16240DL,118 integrates bus-hold circuitry on all data input pins (1A0–4A3). As documented in Table 7, it provides ±130 µA hold current at VCC = 3 V to actively retain the last-valid logic state when inputs float. This eliminates the need for external 10 kΩ pull-up or pull-down resistors, reducing component count and improving reliability in systems with unterminated stubs or hot-swap events.

What is the propagation delay performance of the 74ALVT16240DL,118 at 3.3 V supply?

At VCC = 3.3 V and CL = 50 pF, the 74ALVT16240DL,118 achieves typical propagation delays of 1.7 ns (tPLH and tPHL), with maximum values of 3.0 ns and 2.6 ns respectively (Table 1). These values are measured under standard conditions per Figure 4 and confirm suitability for high-speed 16-bit bus applications operating up to 300 MHz toggle frequency.

Can the 74ALVT16240DL,118 be used in hot-swap or live-insertion applications?

Yes, the 74ALVT16240DL,118 supports live insertion and extraction per its feature list. It incorporates power-up 3-state behavior (outputs remain high-impedance until VCC stabilizes) and exceeds 2000 V HBM ESD protection (MIL-STD-883 method 3015), preventing bus contention and latch-up during hot-plug events in backplane or modular systems.

What package type is used for the 74ALVT16240DL,118, and what are its mechanical dimensions?

The 74ALVT16240DL,118 uses the SSOP48 package (SOT370-1): a plastic shrink small outline package with 48 leads, 0.5 mm pitch, 7.5 mm body width, and 1.95 mm max height. Dimensions are fully specified in Figure 7 and Table notes, including lead coplanarity ≤0.1 mm and mold compound protrusion ≤0.25 mm per side - ensuring reliable surface-mount assembly and IPC-compliant reflow profiles.