Nexperia USA Inc. 74AHC02D-Q100J

Overview

74AHC02D-Q100 from Nexperia is an automotive-qualified quad 2-input NOR gate in SO14 (SOT108-1) package, operating from -40 °C to +125 °C with CMOS-level inputs, 5.5 V max supply voltage, and typical propagation delay of 2.9 ns at VCC = 5.0 V and CL = 15 pF. It delivers balanced timing, Schmitt-trigger inputs, and overvoltage-tolerant inputs for robust logic interfacing in engine control units and body electronics.

For engineers reviewing the 74AHC02D-Q100 datasheet, 74AHC02D-Q100 pinout, 74AHC02D-Q100 application, or 74AHC02D-Q100 equivalent, this page provides verified functional identity, automotive-grade thermal and ESD specs (HBM >2000 V), SO14 pin mapping, and direct alternatives with input-level and timing differences.

Technical Context

This device implements four independent 2-input NOR gates using high-speed Si-gate CMOS technology, fully compliant with JEDEC 7-A and AEC-Q100 Grade 1. Its inputs accept voltages up to 7.0 V regardless of VCC, enabling level-shifting between mixed-voltage subsystems.

The logic function follows standard NOR truth table (L,L→H; X,H→L; H,X→L), with all inputs featuring Schmitt-trigger action for noise immunity on slow or noisy signals. Propagation delays are balanced between rising and falling edges (tPLH ≈ tPHL), supporting deterministic timing in synchronous control paths.

Key Specifications

Pinout & Package

74AHC02D-Q100 uses the SO14 (SOT108-1) plastic small outline package: 14-pin, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads, RoHS-compliant matte tin finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHC02D-Q100, the 74AHCT02D-Q100 trades input overvoltage tolerance for TTL compatibility, while SN74LVC02APWR offers greater drive strength but sacrifices automotive Grade 1 qualification - making the original part uniquely suited for high-reliability, mixed-voltage, under-hood logic interfacing.

Availability

74AHC02D-Q100 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera sequencing, and infotainment reset coordination requiring stable component supply across automotive production lifecycles.

Supply support for 74AHC02D-Q100 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 essential efficiency-enhancing components - delivering high-performance, reliable, and scalable logic, discrete, and MOSFET solutions.

The 74AHC-Q100 series targets automotive applications demanding AEC-Q100 Grade 1 qualification, wide temperature operation, and robust noise immunity - designed specifically for safety-critical and mission-reliant vehicle subsystems.

FAQ

Is 74AHC02D-Q100 pin-compatible with standard 74LS02?

Yes - it is fully pin-compatible with 74LS02 and other industry-standard quad 2-input NOR gates in SO14 packages. The pin numbering, logic function, and output drive capability match LSTTL, enabling drop-in replacement without PCB changes. Input thresholds differ (CMOS vs TTL), but the AHC version's overvoltage tolerance ensures safe operation even with legacy 5 V drive sources.

What is the maximum input rise/fall rate supported?

The device specifies a minimum input transition rate of 20 ns/V at VCC = 4.5–5.5 V, meaning it reliably accepts edges slower than 20 ns per volt of swing (e.g., ≥100 ns for 5 V transitions). This is enabled by internal Schmitt-trigger inputs, which prevent metastability on slow edges - critical for switch debouncing or sensor signal conditioning in automotive environments.

Can 74AHC02D-Q100 operate at 3.3 V supply?

Yes - it is fully specified from 2.0 V to 5.5 V, with guaranteed performance at 3.3 V. At VCC = 3.3 V, typical propagation delay is 3.9 ns (CL = 15 pF), VOH ≥ 2.9 V at −4 mA, and VOL ≤ 0.36 V at 4 mA. Input thresholds scale with VCC (VIH ≈ 0.7×VCC), ensuring correct logic interpretation in 3.3 V systems.

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

No - all inputs feature integrated Schmitt-trigger action with defined thresholds and negligible leakage (<0.1 μA), so unused inputs may be tied directly to VCC or GND without external resistors. However, tying to VCC or GND is mandatory to prevent floating nodes, which could cause increased ICC or erratic output behavior due to noise coupling.