Diodes Incorporated 74AHC1G02SE-7

Overview

74AHC1G02SE-7 from Diodes Incorporated is a single 2-input positive NOR gate in SOT353 package, operating from 2.0V to 5.5V supply, delivering ±8 mA output drive at 5.0 V, with Schmitt-trigger inputs for noise immunity, and RoHS-compliant lead-free finish-used in logic-level translation and signal conditioning within portable computing peripherals.

For engineers reviewing the 74AHC1G02SE-7 datasheet, 74AHC1G02SE-7 pinout, 74AHC1G02SE-7 application, or 74AHC1G02SE-7 equivalent, key selection criteria include input hysteresis margin, propagation delay under 7.0 ns at 5 V/50 pF, output drive capability across voltage range, and thermal resistance (θ_JA = 430 °C/W) for compact PCB layouts.

Technical Context

This device implements standard Boolean NOR logic (Y = A̅·B̅) using advanced CMOS process technology, supporting rail-to-rail input and output swing. Its Schmitt-trigger inputs provide 0.3–0.5 V hysteresis, enabling robust operation with slow-rising or noisy control signals.

Designed for low-power embedded logic, it features 13 pF typical power-dissipation capacitance and ICC ≤ 40 μA at 5.5 V, with guaranteed operation from –40 °C to +125 °C ambient and junction temperature up to +150 °C.

Key Specifications

Pinout & Package

SOT353 (5-pin, 1.2 mm × 2.1 mm × 0.95 mm body height) surface-mount package with gull-wing leads, green molding compound, and lead-free RoHS-compliant finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar single-gate logic applications.

Compared with SN74LVC1G02DBVR and 74AUP1G02GW,125, the 74AHC1G02SE-7 uniquely balances 5 V tolerance, built-in Schmitt inputs, and SOT353 compactness-making it optimal for mixed-voltage, noise-prone edge-node logic where gate count and layout area are constrained.

Availability

74AHC1G02SE-7 is available at Aetrix Electronics and suitable for USB peripheral control, industrial sensor debouncing, portable media UI logic, and network equipment status indication requiring stable component supply across automotive-grade temperature ranges and long production lifecycles.

Supply support for 74AHC1G02SE-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, energy-efficient components for industrial, computing, and consumer markets.

The 74AHC logic family targets low-power, high-speed general-purpose digital functions in space-constrained designs-emphasizing wide supply range, robust ESD performance, and compatibility with legacy TTL and modern CMOS systems.

FAQ

What is the maximum recommended operating frequency for 74AHC1G02SE-7?

The device does not specify a clock frequency limit, as it is combinational logic. However, with t_PD ≤ 7.0 ns at 5 V/50 pF, it supports signal toggle rates up to ~70 MHz in well-terminated paths. System-level timing depends on load capacitance, trace inductance, and input slew rate-designers should verify setup/hold margins in actual PCB layout.

Can unused inputs be left floating?

No. Per datasheet Note 3, unused inputs must be tied to V_CC or GND to prevent increased ICC, oscillation, or ESD susceptibility. Floating inputs cause undefined output states and may induce excessive current draw due to partial conduction in internal transistors.

Does 74AHC1G02SE-7 support mixed-voltage interfacing (e.g., 3.3 V input driving 5 V output)?

Yes. With VIH(min) = 2.1 V at V_CC = 3.0 V and VIL(max) = 0.9 V, it reliably accepts 3.3 V LVTTL outputs. Its 5 V-tolerant output stage delivers VOH ≥ 4.4 V and VOL ≤ 0.1 V, enabling direct connection to 5 V CMOS loads without level-shifting circuitry.

Is thermal derating required for continuous 8 mA output current in SOT353 package?

Yes. At TA = 125 °C, θ_JA = 430 °C/W implies ΔT = 34.4 °C for 8 mA sink/source (P ≈ 40 mW). Junction temperature reaches ~159 °C-exceeding rated TJ(max) = 150 °C. Derate output current to ≤6 mA or add 20 mm² copper pour to maintain safe TJ margin.