Nexperia USA Inc. 74LVC02AD,118

Overview

74LVC02AD from Nexperia is a quad 2-input NOR gate logic IC in SO14 package, operating from 1.2 V to 3.6 V supply, with overvoltage-tolerant inputs up to 5.5 V and Schmitt-trigger inputs for noise immunity. It supports mixed-voltage translation between 3.3 V and 5 V systems and delivers propagation delay as low as 2.2 ns (typ) at 3.3 V, enabling use in level-shifting control paths of industrial microcontroller I/O expanders.

For engineers reviewing the 74LVC02AD datasheet, 74LVC02AD pinout, 74LVC02AD application, or 74LVC02AD equivalent, this device is selected for robust input tolerance, rail-to-rail output swing, guaranteed operation from –40 °C to +125 °C, and compatibility with JEDEC-standard voltage interfaces across LVC-family logic families.

Technical Context

This device implements four independent 2-input NOR gates using advanced CMOS technology, each with Schmitt-trigger inputs that accept slow-rising signals and reject noise below hysteresis thresholds. Input voltage range extends to 5.5 V regardless of VCC, enabling direct interfacing with legacy 5 V TTL outputs without external resistors.

It operates across a wide VCC range (1.2 V–3.6 V), with static and dynamic parameters fully characterized at –40 °C to +125 °C. Propagation delay is specified down to 1.0 ns (min) and 5.5 ns (max) at 3.0–3.6 V, and output skew is limited to 1.5 ns max between any two gates switching in the same direction.

Key Specifications

Pinout & Package

74LVC02AD is housed in a plastic small outline package (SO14, SOT108-1) with 14 leads and 3.9 mm body width. Pin 1 is marked by a notch or dot; the package is RoHS-compliant and lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC02APWR, 74LVC02AD offers easier manual assembly and higher thermal mass for transient power dissipation; versus 74AUP1G02GW, it delivers four gates in one SO14 footprint - reducing BOM line items and routing complexity in multi-signal control logic.

Availability

74LVC02AD is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, medical infusion pump safety logic, and IoT edge node sensor aggregation requiring stable component supply across extended temperature ranges.

Supply support for 74LVC02AD 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 headquartered in Nijmegen, Netherlands, specializing in high-volume logic, analog, and discrete components with emphasis on reliability and energy efficiency.

The 74LVC02A belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, designed specifically for robust mixed-voltage interfacing and low-power operation in industrial, automotive, and consumer embedded systems.

FAQ

Can 74LVC02AD operate with a 1.2 V supply and still interface with 5 V inputs?

Yes. The device is explicitly rated for VCC as low as 1.2 V while accepting input voltages up to 5.5 V on all pins - no external clamping or pull-up resistors are required. This overvoltage tolerance is built into the input protection structure and validated across the full –40 °C to +125 °C temperature range.

What is the maximum capacitive load the outputs can drive while maintaining specified tpd?

The datasheet specifies propagation delay with CL = 50 pF for VCC ≥ 2.7 V. Output drive capability remains within spec up to 50 pF; beyond that, tpd increases linearly due to RC time constant. For loads >50 pF, add series termination or buffer stages - the 24 mA output current supports sustained drive into ≤30 pF without significant degradation.

Does 74LVC02AD require external pull-up or pull-down resistors on unused inputs?

No. Unused inputs must be terminated to VCC or GND to prevent floating states and excessive ICC, but internal input structure does not mandate specific resistor values. A direct connection or 10 kΩ resistor suffices; Schmitt-trigger inputs eliminate need for precision biasing.

How does the Schmitt-trigger input affect timing analysis in a synchronous design?

Schmitt-trigger inputs introduce hysteresis (typically 0.3–0.5 V), which improves noise immunity but adds minor, non-linear delay variation depending on input slew rate. For timing-critical paths, use the worst-case tpd value (5.5 ns) and avoid relying on minimum propagation times - the hysteresis ensures monotonic transitions even with slow edges.