Nexperia USA Inc. 74ALVC02D,118

Overview

74ALVC02D,118 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 2.2 ns (typ) at 3.3 V, supports −40 °C to +125 °C ambient range, and features overvoltage-tolerant inputs up to 3.6 V-enabling robust interfacing in mixed-voltage digital control systems such as industrial PLC I/O modules.

For engineers reviewing the 74ALVC02D,118 datasheet, 74ALVC02D,118 pinout, 74ALVC02D,118 application, or 74ALVC02D,118 equivalent, this device serves as a drop-in-compatible, low-power replacement for legacy ALVC and AHC NOR gates in space-constrained, thermally demanding board-level logic functions requiring noise immunity and power-state isolation.

Technical Context

The 74ALVC02D,118 implements four independent 2-input NOR gates in a single SO14 package, each with Schmitt-trigger input thresholds that tolerate slow-rising signals and suppress noise-induced glitches. Its IOFF circuit actively disables outputs when VCC = 0 V, blocking backflow current during hot-swap or partial system power-down sequences.

All inputs are overvoltage tolerant to 3.6 V regardless of supply voltage, enabling direct interface with 3.3 V or 5 V TTL logic without level-shifting. Static and dynamic characteristics-including VIH/VIL thresholds, VOH/VOL drive strength, and tpd-remain fully specified across the full −40 °C to +125 °C temperature range and 1.65 V–3.6 V VCC window.

Key Specifications

Pinout & Package

74ALVC02D,118 is housed in a plastic small outline package (SO14), SOT108-1, with 14 leads and 3.9 mm body width. The package is RoHS-compliant, lead-free, and rated for reflow soldering per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVC02AD,118 and SN74AHC02DR, the 74ALVC02D,118 uniquely combines Schmitt-trigger noise immunity, IOFF-enabled power sequencing, and guaranteed 1.65–3.6 V operation-making it the only option among the three qualified for mixed-voltage, hot-swap-capable industrial control logic.

Availability

74ALVC02D,118 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, medical infusion pump controllers, and network equipment power sequencing requiring stable component supply across extended temperature and mixed-voltage conditions.

Supply support for 74ALVC02D,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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74ALVC02D,118 belongs to Nexperia's advanced low-voltage CMOS logic family, engineered specifically for robust, low-power, mixed-supply digital interfacing in thermally demanding and electrically noisy environments.

FAQ

Does 74ALVC02D,118 support true bidirectional signal routing?

No. The 74ALVC02D,118 is a unidirectional combinatorial logic device with dedicated input (A/B) and output (Y) pins per gate. It lacks internal bus-hold, direction control, or tri-state enable functionality. Signal flow is strictly input-to-output; no pin can function as both input and output within the same gate.

Can 74ALVC02D,118 be used with a 1.5 V supply?

No. The absolute minimum recommended VCC is 1.65 V per Table 5. Operation below 1.65 V violates the device's specified operating conditions and may result in undefined logic states, increased propagation delay variation, or failure to meet VIH/VIL thresholds. For 1.5 V systems, consider the 74LVC02AD,118 instead.

What is the thermal pad connection requirement for the SO14 package?

The SO14 (SOT108-1) package has no thermal pad. Unlike QFN variants, it uses standard gull-wing leads for heat dissipation. Thermal performance relies on PCB copper area connected to pins 7 (GND) and 14 (VCC); no exposed pad soldering or grounding is required or supported.

How does IOFF behave when VCC is ramping from 0 V to nominal?

IOFF activates when VCC falls below approximately 0.8 V and remains active until VCC exceeds ~1.2 V. During this transition window, outputs are high-impedance and leakage is limited to ±10 μA max. This ensures clean isolation during power-up/down transients without requiring external enable sequencing.