Diodes Incorporated 74LVC1G02FS3-7

Overview

74LVC1G02FS3-7 from Diodes Incorporated is a single 2-input positive NOR gate in an X2-DFN0808-4 package (0.8 mm × 0.8 mm, 0.5 mm pad pitch), operating from 1.65 V to 5.5 V with ±24 mA output drive at 3.3 V, 5.5 ns max propagation delay at 3.3 V, and IOFF-enabled partial power-down protection. It enables voltage-level shifting and signal isolation in space-constrained portable logic interfaces.

For engineers reviewing the 74LVC1G02FS3-7 datasheet, 74LVC1G02FS3-7 pinout, 74LVC1G02FS3-7 application, or 74LVC1G02FS3-7 equivalent, key selection criteria include its 0.8 mm × 0.8 mm DFN footprint, 5.5 V-tolerant inputs, IOFF leakage <±200 µA at 0 V supply, and guaranteed operation down to –40°C for battery-powered edge devices.

Technical Context

This device implements the Boolean function Y = A + B (positive NOR) using CMOS logic with push-pull outputs. Its IOFF circuit actively disables both output paths during power-down, preventing back-current flow when VCC = 0 V while inputs remain biased at up to 5.5 V.

Input thresholds are voltage-ratio-based (VIH = 0.65×VCC min at 1.65–1.95 V; 0.7×VCC at 4.5–5.5 V), enabling reliable interfacing across mixed-supply domains. Propagation delay scales inversely with VCC - 8.0 ns max at 1.8 V, 4.5 ns max at 3.3 V, and 4.0 ns max at 5.0 V - supporting timing-critical signal conditioning.

Key Specifications

Pinout & Package

X2-DFN0808-4 is a 4-terminal, leadless chip-scale package measuring 0.8 mm × 0.8 mm × 0.35 mm with diamond-pattern 0.5 mm pad pitch and exposed thermal pad (non-electrical). Pin 1 identifier is marked by chamfered corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G02DBVR and 74AUP1G02GW,125, the 74LVC1G02FS3-7 uniquely combines 0.8 mm × 0.8 mm size, 5.5 V input tolerance, and IOFF - making it the only option for miniaturized, mixed-voltage, and sequenced-power industrial or portable designs.

Availability

74LVC1G02FS3-7 is available at Aetrix Electronics and suitable for USB-C peripheral control, smartphone power sequencing, wearable sensor wake-up logic, and industrial I/O module signal conditioning requiring stable component supply across automotive-grade temperature ranges and long production lifecycles.

Supply support for 74LVC1G02FS3-7 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 semiconductor company specializing in discrete, analog, and logic solutions, with design centers in Asia, Europe, and the U.S., and manufacturing in ISO/TS 16949-certified facilities.

The 74LVC logic family targets high-speed, low-voltage general-purpose digital interfacing, emphasizing mixed-supply compatibility, power-down safety, and compact packaging for portable and industrial electronics.

FAQ

What is the maximum allowable input voltage when VCC = 0 V?

The 74LVC1G02FS3-7 supports 5.5 V-tolerant inputs independent of VCC status. When VCC = 0 V, inputs A and B may safely remain at up to 5.5 V due to internal ESD protection diodes and IOFF circuitry, which isolates the output and prevents back-current flow into the powered-down die.

Can this device drive a 50 pF capacitive load at 3.3 V?

No - the datasheet specifies switching characteristics (tpd, tr/tf) are characterized with CL = 30 pF for 1.8–3.3 V and 50 pF for 5.0 V. At 3.3 V with 50 pF, propagation delay increases beyond the rated 4.5 ns max, and output rise/fall times degrade; use CL ≤ 30 pF for guaranteed timing compliance.

Is the X2-DFN0808-4 package RoHS and halogen-free?

Yes - the 74LVC1G02FS3-7 is fully RoHS 3 compliant (2015/863/EU) and halogen-free, containing <900 ppm bromine, <900 ppm chlorine (<1500 ppm total Br + Cl), and <1000 ppm antimony compounds, meeting Diodes Incorporated's "Green" product definition.

How should unused inputs be handled?

Per datasheet Note 9, unused inputs must be tied to either VCC or GND - floating inputs cause increased ICC, unpredictable logic states, and potential oscillation. For NOR functionality, tying an unused input to GND forces the gate to act as a single-input inverter (Y = NOT A), while tying to VCC disables that input path entirely.