NXP Semiconductors 74AHC02D,112

Overview

74AHC02D,112 from Nexperia is a quad 2-input NOR gate in SO14 (SOT108-1) package, designed for high-speed CMOS logic interfacing with LSTTL-compatible pinout. It operates from 2.0 V to 5.5 V, delivers propagation delay as low as 2.9 ns (VCC = 4.5–5.5 V, CL = 15 pF), supports -40 °C to +125 °C ambient range, and features Schmitt-trigger inputs for noise immunity-used in address decoding, control signal arbitration, and bus isolation circuits.

For engineers reviewing the 74AHC02D,112 datasheet, 74AHC02D,112 pinout, 74AHC02D,112 application, or 74AHC02D,112 equivalent, this page provides verified functional identity, SO14 pin mapping, TTL/CMOS input-level distinction, ESD robustness (HBM >2000 V), and real-world timing behavior under load-critical for deterministic logic design in industrial control and instrumentation systems.

Technical Context

This device implements four independent 2-input NOR gates using Si-gate CMOS technology, compliant with JEDEC Std 7-A and pin-compatible with LSTTL. Its Schmitt-trigger inputs accept voltages exceeding VCC, enabling reliable level translation across mixed-voltage domains.

Static performance includes VIH = 3.85 V (min, VCC = 5.5 V) and VOL = 0.36 V (max, IO = 8.0 mA), while dynamic operation achieves tpd ≤ 5.5 ns at 5.5 V/15 pF. Input leakage remains ≤2.0 μA over full temperature range, supporting low-power standby states.

Key Specifications

Pinout & Package

74AHC02D,112 uses the SO14 (SOT108-1) plastic small outline package: 14-lead, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads, JEDEC MS-012 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHC02D,112, the 74AHCT02D,112 offers guaranteed TTL-level recognition at 5 V but sacrifices rail-to-rail input tolerance, while SN74LVC02APWR trades Schmitt-trigger robustness for higher drive strength and lower minimum supply-making the AHC variant optimal for mixed-signal industrial systems demanding noise resilience and wide voltage support.

Availability

74AHC02D,112 is available at Aetrix Electronics and suitable for industrial control logic, microcontroller bus interface, power sequencing monitors, and reset signal combiners requiring stable component supply across extended temperature ranges.

Supply support for 74AHC02D,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 focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74AHC series targets high-speed, low-power CMOS logic applications requiring LSTTL compatibility, wide supply range, and robust operation in harsh thermal environments.

FAQ

Can 74AHC02D,112 operate reliably at 2.0 V supply?

Yes. The device is fully specified down to 2.0 V: propagation delay is 7.9 ns max (CL = 15 pF), VOH ≥1.5 V, and VOL ≤0.5 V at IO = 4.0 mA. Input thresholds scale with VCC, maintaining correct logic interpretation across the entire 2.0–5.5 V range.

What is the purpose of the Schmitt-trigger inputs?

Schmitt-trigger inputs provide hysteresis (typically 0.3–0.5 V) to reject noise on slow-rising or noisy control signals-such as those from mechanical switches, relay contacts, or long PCB traces-preventing false triggering during signal transitions.

Is the SO14 package RoHS-compliant and lead-free?

Yes. The SOT108-1 package used for 74AHC02D,112 is lead-free and RoHS-compliant per EU Directive 2011/65/EU, with matte tin (Sn) lead finish and halogen-free molding compound, certified in Nexperia's product compliance documentation.

How does 74AHC02D,112 differ from 74HC02?

74AHC02D,112 offers higher speed (2.9 ns vs. ~7 ns typical), lower ICC (2.0 μA vs. ~4 μA), improved noise immunity via Schmitt-trigger inputs, and tighter VOH/VOL specs at high drive currents-making it suitable for modern high-density, low-noise digital systems.