Nexperia USA Inc. 74ALVC02BQ,115

Overview

74ALVC02BQ,115 from Nexperia is a quad 2-input NOR 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 1.0 ns (typical at VCC = 3.3 V), supports −40 °C to +125 °C ambient range, and features overvoltage-tolerant inputs up to 3.6 V. Used in noise-immune digital control signal conditioning for industrial I/O modules.

For engineers reviewing the 74ALVC02BQ,115 datasheet, 74ALVC02BQ,115 pinout, 74ALVC02BQ,115 application, or 74ALVC02BQ,115 equivalent, key selection criteria include IOFF-enabled bus isolation during power sequencing, Schmitt-trigger input hysteresis for slow-edge signal cleanup, rail-to-rail input tolerance, and DHVQFN14 thermal performance in space-constrained PCB layouts.

Technical Context

This device implements four independent 2-input NOR gates in a single monolithic CMOS structure, each with Schmitt-trigger input thresholds enabling robust operation with slow-rising or noisy control signals. The IOFF circuit actively disables outputs when VCC = 0 V, blocking backflow current and supporting hot-swap and partial-power-down system architectures.

It complies with JEDEC standards JESD8-7 (1.65–1.95 V), JESD8-5 (2.3–2.7 V), and JESD8C/JESD36 (2.7–3.6 V), and meets HBM ESD >2000 V and CDM >1000 V per JS-001/JS-002. Static and dynamic parameters are fully characterized across −40 °C to +125 °C.

Key Specifications

Pinout & Package

DHVQFN14 (SOT762-1) package: 2.5 mm × 3.0 mm × 0.85 mm body, no leads, exposed thermal pad (non-soldered by default), 14 terminals, pin 1 index area marked.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-input NOR gate applications.

Compared with SN74LVC02APWR and 74AUP2G02GM,132, the 74ALVC02BQ,115 uniquely combines quad gate density, Schmitt inputs, IOFF, and extended temperature support - making it the sole option for robust industrial control logic requiring simultaneous noise immunity, power sequencing safety, and thermal resilience.

Availability

74ALVC02BQ,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, programmable logic controller input modules, motor control enable logic, and redundant safety interlock circuits requiring stable component supply across extended temperature ranges.

Supply support for 74ALVC02BQ,115 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, with leadership in automotive and industrial applications.

The 74ALVC logic family targets high-speed, low-power, mixed-voltage digital interfacing in harsh environments - designed specifically for industrial automation, motor control, and infrastructure equipment demanding extended temperature operation and robust signal integrity.

FAQ

Can the 74ALVC02BQ,115 operate with a 1.8 V supply and interface to 3.3 V inputs?

Yes. Its inputs are overvoltage tolerant up to 3.6 V regardless of VCC, so it can safely accept 3.3 V logic signals while powered from 1.8 V. Output high-level voltage (VOH) will be ~1.6 V minimum at 1.8 V VCC with 6 mA load, sufficient to drive other 1.8 V logic inputs.

What is the function of the exposed thermal pad on the DHVQFN14 package?

The exposed pad (pin 1 index area) has no electrical function and requires no solder connection. If soldered, it must remain electrically floating or be tied to GND. Its primary role is mechanical stability and thermal conduction - improves heat dissipation by up to 30% compared to leaded packages under continuous 50 mW/gate loading.

Does the IOFF feature protect against back-current when only one supply rail is powered down?

Yes. IOFF activates when VCC = 0 V, disabling all four outputs regardless of input states or other system rails. This prevents current flow from powered I/O lines (e.g., 3.3 V field bus) into the unpowered 74ALVC02BQ,115, satisfying IEC 61000-4-2 and system-level hot-swap requirements.

How does Schmitt-trigger action improve reliability in industrial switch interfaces?

Schmitt-trigger inputs provide ~0.3 V hysteresis between rising and falling thresholds, preventing multiple output transitions caused by contact bounce or EMI-induced noise on mechanical switch lines. This eliminates need for software debouncing or external RC filters, reducing latency and firmware complexity in time-critical control loops.