NXP Semiconductors 74ALVC02D,112

Overview

74ALVC02D,112 from Nexperia is a quad 2-input NOR gate 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. It is used in level-shifting logic interfaces and noise-immune control signal conditioning in industrial microcontroller peripherals.

For engineers reviewing the 74ALVC02D,112 datasheet, 74ALVC02D,112 pinout, 74ALVC02D,112 application, or 74ALVC02D,112 equivalent, key selection criteria include IOFF-enabled bus isolation during power sequencing, Schmitt-trigger input hysteresis for slow-edge signal cleanup, guaranteed timing performance across extended temperature, and compatibility with mixed-voltage 1.8 V/2.5 V/3.3 V digital systems.

Technical Context

This device implements four independent 2-input NOR gates in a single SO14 package, each with Schmitt-trigger inputs enabling robust operation with slow-rising or noisy signals. The IOFF circuit actively disables outputs when VCC = 0 V, preventing backflow current and enabling live insertion into partially powered systems.

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 ESD >1000 V per JS-001/JS-002. Latch-up immunity exceeds 250 mA per JESD78 Class II.A.

Key Specifications

Pinout & Package

74ALVC02D,112 is housed in a plastic small outline package (SO14, SOT108-1) with 14 leads and 3.9 mm body width. Pin 1 is index-marked; pin 7 is GND; pin 14 is VCC.

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 74AUP1G02GW,125, the 74ALVC02D,112 uniquely combines Schmitt-trigger inputs, IOFF, and quad integration in SO14 - making it the only choice for noise-prone, multi-rail, hot-pluggable industrial control logic where reliability and layout efficiency are jointly critical.

Availability

74ALVC02D,112 is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller GPIO expansion, legacy bus signal conditioning, and power sequencing control logic requiring stable component supply across extended temperature and mixed-voltage environments.

Supply support for 74ALVC02D,112 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 delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and manufacturability in high-volume applications.

The 74ALVC series targets advanced low-voltage logic interfacing in industrial, computing, and communications systems - designed specifically for robust operation across wide supply ranges and harsh thermal environments.

FAQ

Does 74ALVC02D,112 support true bidirectional operation?

No. The 74ALVC02D,112 is a unidirectional quad NOR gate with dedicated inputs (A/B) and outputs (Y). It lacks bus transceiver architecture or direction-control pins. Its IOFF feature only places outputs in high-impedance state during power-down - it does not enable data flow reversal or bidirectional signal routing.

Can 74ALVC02D,112 be operated at 1.5 V supply?

No. The absolute minimum recommended supply voltage is 1.65 V per JEDEC JESD8-7 compliance. Operation below 1.65 V violates specification limits, risks undefined logic states, and invalidates timing parameters including propagation delay and output drive strength.

What is the function of the exposed thermal pad in the DHVQFN variant?

The exposed pad in the BQ package (SOT762-1) is electrically isolated and labeled "GND(1)" - it has no mandatory electrical connection. If soldered, it must remain floating or connect to system ground; it serves only thermal enhancement and mechanical stability, not signal or power conduction.

How does IOFF behave when VCC is ramping during power-up?

IOFF activates only when VCC reaches 0 V. During power-up ramp, the device operates normally once VCC exceeds ~0.8 V. IOFF does not engage during brown-out or partial ramp - it is strictly a zero-supply-state feature, not a dynamic undervoltage lockout mechanism.