Diodes Incorporated 74LVC1G02FZ4-7

Overview

74LVC1G02FZ4-7 from Diodes Incorporated is a single 2-input positive NOR gate in X2-DFN1410-6 package, operating from 1.65V to 5.5V supply, with ±24mA output drive at 3.3V, 5.5V-tolerant inputs, and IOFF partial-power-down protection. It performs Boolean Y = A + B and is used for voltage-level shifting and signal isolation in portable logic interfaces.

For engineers reviewing the 74LVC1G02FZ4-7 datasheet, 74LVC1G02FZ4-7 pinout, 74LVC1G02FZ4-7 application, or 74LVC1G02FZ4-7 equivalent, key selection criteria include mixed-voltage interface capability, low-threshold input compatibility across 1.65–5.5V rails, IOFF-enabled power sequencing safety, and ultra-small 1.4mm × 1.0mm DFN footprint for space-constrained PCBs.

Technical Context

This device implements a standard push-pull CMOS NOR gate with true positive logic behavior (Y = A + B), supporting bidirectional voltage translation between disparate logic families due to 5.5V-tolerant inputs and rail-to-rail output swing. Its IOFF circuit actively disables outputs during VCC ramp-down to prevent back-current flow.

Designed for partial-power-down systems, it maintains high-impedance output states when VCC = 0V while inputs remain at valid logic levels up to 5.5V - enabling safe hot-insertion and multi-rail domain isolation without external blocking components.

Key Specifications

Pinout & Package

X2-DFN1410-6 is a 1.4mm × 1.0mm × 0.4mm, 0.5mm pad pitch, 6-terminal chip-scale package with wettable flanks and bottom-side thermal pad. Pin 1 identifier is marked by chamfered corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G02DBVR and 74LVC1G02FS3-7, the 74LVC1G02FZ4-7 offers optimal balance of ultra-small size (1.4mm × 1.0mm), dedicated GND and NC pins for signal integrity, and lower thermal resistance (θJA = 460°C/W) - making it ideal for automated SMT assembly in high-reliability portable electronics.

Availability

74LVC1G02FZ4-7 is available at Aetrix Electronics and suitable for USB-C power delivery sequencing, industrial sensor interface isolation, wearable device power-down control, and automotive body control module signal gating requiring stable component supply and long-term lifecycle support.

Supply support for 74LVC1G02FZ4-7 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 across Asia, Europe, and the US, and manufacturing in ISO/TS 16949-certified facilities.

This device belongs to the 74LVC logic family, engineered for low-voltage, mixed-rail digital interfacing in portable, industrial, and automotive-adjacent applications where power efficiency, small size, and robustness across supply variations are essential.

FAQ

Can 74LVC1G02FZ4-7 operate reliably at 1.65V supply?

Yes. The device is fully specified down to 1.65V per its Recommended Operating Conditions, with guaranteed VOL ≤0.45V and VOH ≥1.2V at IO = ±4mA. At this minimum voltage, propagation delay increases to 8.0ns (TA = –40°C to +85°C), but functionality and timing remain within datasheet limits for low-speed control logic.

What is the function of the NC pin in X2-DFN1410-6?

The NC (No Connection) pin is an unconnected die pad with no internal bond wire. It serves as a mechanical alignment marker and thermal relief point but carries no electrical function. It must not be connected to any net, including ground or power, and should remain floating per Diodes' layout guidelines.

Does 74LVC1G02FZ4-7 require external pull-up or pull-down resistors on inputs?

No. Unused inputs must be tied to VCC or GND per Note 9 in the datasheet, but no external resistors are required for functional operation. The inputs have no internal weak pull-ups or pull-downs; leaving them floating violates recommended operating conditions and may cause excessive ICC or metastability.

How does IOFF behave when VCC = 0V but inputs are at 5.5V?

When VCC = 0V, the IOFF circuit forces the output Y into high-impedance state regardless of input voltages. Measured IOFF leakage is ≤±200μA across –40°C to +125°C, preventing damaging back-current flow from 5.5V inputs into the unpowered VCC rail - a key requirement for hot-swap and partial-power-down architectures.