Nexperia USA Inc. 74ALVC32BQ,115

Overview

74ALVC32BQ from Nexperia is a quad 2-input OR gate logic IC with Schmitt-trigger inputs, IOFF partial power-down capability, and operation across 1.65 V to 3.6 V supply. It delivers propagation delay as low as 2.0 ns at 3.0–3.6 V, supports -40 °C to +125 °C ambient, and features overvoltage-tolerant inputs up to 3.6 V-used in industrial control signal conditioning and level-translated bus interfacing.

For engineers reviewing the 74ALVC32BQ datasheet, 74ALVC32BQ pinout, 74ALVC32BQ application, or 74ALVC32BQ equivalent, key selection criteria include IOFF-enabled hot-swap compatibility, Schmitt-trigger noise immunity for slow-rising sensor signals, guaranteed timing performance across extended temperature, and DHVQFN14 thermal-enhanced packaging for high-density PCB layouts.

Technical Context

This device implements four independent OR gates with Schmitt-trigger input thresholds-enabling robust operation with slow or noisy input edges. Each gate exhibits symmetric HIGH/LOW output voltage specs (e.g., VOH ≥ 2.2 V at IO = –24 mA, VCC = 3.0 V) and defined input hysteresis per JEDEC JESD8-7/8C compliance.

The IOFF circuit actively disables outputs when VCC = 0 V, limiting backflow current to ≤ ±80 μA, making it suitable for live-insertion systems. Dynamic characteristics are characterized with 30–50 pF loads and specified propagation delays (tpd) down to 2.0 ns (typ) at 3.3 V, with CPD = 25 pF per gate for dynamic power estimation.

Key Specifications

Pinout & Package

DHVQFN14 (SOT762-1) package: 2.5 × 3.0 × 0.85 mm body, no leads, exposed thermal pad (non-soldered or floating/GND), 14 terminals. Pin 1 index marked in top-left corner of transparent top view.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-input OR gate applications.

Compared with SN74LVC32APWR and 74AUP2G32DC,125, the 74ALVC32BQ uniquely combines Schmitt-trigger noise immunity, IOFF-enabled partial power-down, and extended temperature support-making it the only option among the three qualified for ruggedized industrial signal aggregation with live-insertion safety.

Availability

74ALVC32BQ is available at Aetrix Electronics and suitable for industrial sensor fusion, hot-swappable module detection, and redundant power monitor logic requiring stable component supply across extended temperature and mixed-voltage environments.

Supply support for 74ALVC32BQ 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 specializing in high-volume, high-reliability logic, discrete, and MOSFET solutions for industrial, automotive, and computing markets.

The ALVC logic family targets high-speed, low-voltage applications demanding robust noise immunity and power-aware design-specifically engineered for signal integrity in dense, thermally challenging PCB layouts.

FAQ

What is the maximum input rise/fall time supported by the Schmitt-trigger inputs?

The datasheet specifies input transition rate limits: 0–20 ns/V at VCC = 1.65–2.7 V and 0–10 ns/V at VCC = 2.7–3.6 V. This means for VCC = 3.3 V, inputs can tolerate rise/fall times up to ~33 ns while remaining within valid switching thresholds-sufficient for typical RC-filtered sensor outputs and mechanical switch debouncing without external conditioning.

Can the thermal pad (pin 14) be soldered to ground?

Yes-the exposed pad is designated as GND(1) in the pin description and may be soldered to a PCB ground plane to improve thermal dissipation. However, the datasheet states there is no electrical or mechanical requirement to do so; if connected, it must remain floating or tied to system GND-not to any other potential. No internal connection exists between the pad and functional pins.

Does IOFF functionality activate automatically during power loss?

Yes-IOFF is an intrinsic circuit feature that engages when VCC drops below approximately 0.2 V. It disables all outputs regardless of input states, limiting backflow current to ≤ ±80 μA even when inputs are held at 3.6 V. No external enable signal or configuration is required; activation is purely voltage-threshold-based and fully compliant with JEDEC JESD78 Class II.A latch-up immunity.

How does the DHVQFN14 package compare thermally to SO14 and TSSOP14 variants?

The SOT762-1 (DHVQFN14) package has a thermal resistance θJA of ~104 K/W (vs. ~140 K/W for SO14 and ~137 K/W for TSSOP14), due to its exposed thermal pad and thinner profile (0.85 mm). Its derating slope is 9.6 mW/K above 98 °C-superior to SO14 (10.1 mW/K above 100 °C) and TSSOP14 (7.3 mW/K above 81 °C)-making it preferred for high-ambient or high-density thermal designs.