Nexperia USA Inc. 74AHC02PW,118

Overview

74AHC02PW,118 from Nexperia is a quad 2-input NOR gate in TSSOP14 package, designed for high-speed CMOS logic interfacing with balanced propagation delays (typ. 2.9 ns at VCC = 5 V, CL = 15 pF), TTL-level compatible input thresholds (74AHCT variant), and operation across -40 °C to +125 °C. It serves as a discrete logic building block in address decoding, control signal arbitration, and bus enable/disable circuits within industrial microcontroller peripherals.

For engineers reviewing the 74AHC02PW,118 datasheet, 74AHC02PW,118 pinout, 74AHC02PW,118 application, or 74AHC02PW,118 equivalent, this page delivers verified pin functions, JEDEC-compliant static/dynamic specifications, thermal derating data for TSSOP14, and validated alternatives for logic-level translation and supply-voltage flexibility.

Technical Context

This device implements four independent 2-input NOR gates using Si-gate CMOS technology, fully compliant with JEDEC Std. 7-A and pin-compatible with LSTTL. Each gate features Schmitt-trigger inputs enabling noise-immune signal conditioning on asynchronous control lines.

It supports dual logic families: 74AHC02 operates with CMOS-level inputs (VIH ≥ 3.85 V at VCC = 5.5 V), while 74AHCT02 accepts TTL-level inputs (VIH ≥ 2.0 V at VCC = 4.5–5.5 V). Input voltage tolerance extends to ±0.5 V beyond VCC/GND rails, and ESD protection meets HBM >2000 V and CDM >1000 V.

Key Specifications

Pinout & Package

TSSOP14 plastic thin shrink small outline package (SOT402-1), 14 leads, body width 4.4 mm, 0.65 mm pitch, exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHC02PW,118, the 74AHCT02PW,118 enables direct TTL interfacing without level translation, while SN74LVC02APW extends voltage range downward to 1.65 V at the cost of 75% longer propagation delay - making the AHC variant optimal for speed-constrained 5 V CMOS systems.

Availability

74AHC02PW,118 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller bus arbitration, and automotive body control modules requiring stable component supply across extended temperature ranges.

Supply support for 74AHC02PW,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 delivering high-performance logic, analog, and discrete components optimized for efficiency, reliability, and miniaturization in industrial and consumer systems.

The 74AHC/AHCT series targets robust, pin-compatible replacements for legacy TTL logic in space-constrained, thermally demanding applications - emphasizing JEDEC compliance, wide temperature operation, and ESD-hardened inputs.

FAQ

Can 74AHC02PW,118 operate at 3.3 V supply?

Yes - the 74AHC02 variant is fully specified from 2.0 V to 5.5 V. At VCC = 3.3 V, it delivers typ. 4.5 ns propagation delay (CL = 15 pF) and maintains VIH ≥ 2.1 V, VIL ≤ 0.9 V, ensuring reliable interface with 3.3 V CMOS microcontrollers and FPGAs without level shifting.

What is the maximum capacitive load for guaranteed timing performance?

The datasheet specifies timing parameters up to CL = 50 pF. At VCC = 5 V, tpd increases from 2.9 ns (15 pF) to 4.2 ns (50 pF). Driving >50 pF loads will further increase delay and may cause output rise/fall time degradation; add series termination or buffer stages for >100 pF traces.

Is the exposed pad on the TSSOP14 package electrically connected?

No - the thermal pad in SOT402-1 is not electrically tied to any internal node. Nexperia documentation states it has "no electrical or mechanical requirement to solder"; if soldered, it must remain floating or connect only to GND to avoid parasitic coupling into sensitive input pins.

How does the Schmitt-trigger input improve noise immunity?

Each input exhibits ~0.5 V hysteresis (difference between VIH and VIL thresholds), meaning a rising signal must exceed VIH to register HIGH, and a falling signal must drop below VIL to register LOW. This prevents multiple toggles from slow-rising or noisy edges - critical for reset, interrupt, and enable signals in electrically noisy environments.