Nexperia USA Inc. 74AHC1G02GW,165

Overview

74AHC1G02GW,165 from Nexperia is a single 2-input CMOS NOR gate in TSSOP5 (SOT353-1) package, operating from 2.0 V to 5.5 V supply, with overvoltage-tolerant inputs up to 5.5 V, symmetrical output impedance, and propagation delay as low as 3.2 ns (VCC = 5.0 V, CL = 15 pF). It serves as a level-translating logic gate in mixed-voltage digital interfaces such as I²C bus buffering or microcontroller GPIO expansion.

For engineers reviewing the 74AHC1G02GW,165 datasheet, 74AHC1G02GW,165 pinout, 74AHC1G02GW,165 application, or 74AHC1G02GW,165 equivalent, key selection criteria include input voltage tolerance, propagation delay vs. load capacitance, output drive strength at 3.3 V/5 V, and thermal derating behavior in compact PCB layouts.

Technical Context

This device implements standard positive-logic NOR functionality (Y = NOT(A OR B)) with TTL-compatible input thresholds only in the AHCT variant; the AHC version uses full CMOS input thresholds (VIH ≥ 3.85 V at VCC = 5.5 V). Its overvoltage-tolerant inputs enable direct connection to 5 V signals while powered from 3.3 V or lower supplies.

Dynamic performance is characterized using controlled-edge test conditions (tr/tf ≤ 3.0 ns), with propagation delays specified across -40 °C to +125 °C and load capacitances of 15 pF and 50 pF. Power dissipation is governed by CPD = 18 pF and static ICC < 40 μA at VCC = 5.5 V.

Key Specifications

Pinout & Package

TSSOP5 (SOT353-1) package: plastic thin shrink small outline, 5-lead, body width 1.25 mm, 0.65 mm pitch, exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHCT1G02GW,165, the AHC variant provides superior noise immunity in high-speed 3.3 V systems; versus SN74LVC1G02DBVR, it trades 1.8 V support for guaranteed 5.5 V input tolerance-critical for industrial backplane interfacing.

Availability

74AHC1G02GW,165 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, USB-C power delivery interlocks, and automotive body control modules requiring stable component supply across extended temperature ranges and mixed-voltage environments.

Supply support for 74AHC1G02GW,165 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 MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial and consumer electronics.

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

FAQ

What is the maximum input voltage the 74AHC1G02GW,165 can tolerate when VCC = 3.3 V?

The device supports input voltages up to 5.5 V regardless of VCC level, per its overvoltage-tolerant input specification. This allows safe connection of 5 V signals to a 3.3 V-powered device without clamping diodes or external protection, provided input current remains within ±20 mA limits.

Does the 74AHC1G02GW,165 support 1.8 V operation?

No. The minimum recommended supply voltage is 2.0 V per Table 6. At 1.8 V, VIH thresholds fall outside specification (e.g., VIH ≥ 3.85 V at VCC = 5.5 V implies >1.8 V threshold even at lower VCC), and output drive degrades significantly-static characteristics are not guaranteed below 2.0 V.

How does thermal derating affect power dissipation in the TSSOP5 package?

For the SOT353-1 (TSSOP5) package, total power dissipation derates linearly at 3.3 mW/K above 74 °C. At 125 °C ambient, Ptot drops from 250 mW to approximately 83 mW, limiting usable output current in high-temperature enclosures unless board-level thermal relief is applied.

Can the 74AHC1G02GW,165 replace a 74HC1G02 in an existing design?

Yes, with verification of input voltage margins: the AHC version offers higher noise immunity and faster propagation (3.2 ns vs. ~7 ns for HC at 5 V), but VIH is higher (3.85 V vs. 3.15 V). If driven by marginal 3.3 V logic, verify that VOH meets AHC's VIH requirement under load.