Diodes Incorporated 74LVC1G04FW4-7

Overview

74LVC1G04FW4-7 from Diodes Incorporated is a single CMOS inverter gate with push-pull output, designed for voltage-level shifting and signal inversion in mixed-voltage digital systems. It operates from 1.65V to 5.5V, tolerates 5.5V inputs, delivers ±24mA output drive at 3.3V, and supports partial power-down via IOFF circuitry-enabling safe use in battery-backed or hot-swap applications such as USB interface logic and portable display controllers.

For engineers reviewing the 74LVC1G04FW4-7 datasheet, 74LVC1G04FW4-7 pinout, 74LVC1G04FW4-7 application, or 74LVC1G04FW4-7 equivalent, key selection criteria include supply voltage flexibility (1.65–5.5V), 5.5V-tolerant inputs, IOFF-enabled isolation during power-down, and DFN1010-6 footprint compatibility with high-density PCB layouts.

Technical Context

This device implements a standard positive-logic inverter function (Y = A̅) using advanced CMOS process technology. Its IOFF circuit actively disables output terminals when VCC = 0V, preventing back-current flow into powered-down sections of the system-a critical requirement for I²C bus isolation and multi-rail power sequencing.

The input structure accepts voltages up to 5.5V independent of VCC, enabling direct interfacing between 1.8V/2.5V/3.3V logic domains and 5V peripherals. Propagation delay is specified down to 0.5ns (typ.) at 5.0V, with consistent timing across –40°C to +125°C operating range.

Key Specifications

Pinout & Package

X2-DFN1010-6 package: 1.0mm × 1.0mm × 0.4mm body, 0.35mm pad pitch, wettable flank side walls for automated optical inspection (AOI).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar inverter gate applications.

Compared with SN74LVC1G04DBVR, 74LVC1G04FW4-7 saves >75% PCB area and enables AOI verification; versus 74AUP1G04GW, it trades 50% lower ICC for essential 5.5V input tolerance in mixed-voltage industrial designs.

Availability

74LVC1G04FW4-7 is available at Aetrix Electronics and suitable for USB interface design, industrial sensor conditioning, and automotive body control modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for 74LVC1G04FW4-7 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, automotive, and consumer markets.

The 74LVC logic family targets low-voltage, high-speed digital interfacing with emphasis on mixed-supply compatibility, IOFF safety, and miniature packaging-designed specifically for space-constrained, multi-rail embedded systems.

FAQ

Can 74LVC1G04FW4-7 be used with a 1.65V supply and 5V input signals?

Yes. The device is fully specified for 1.65V to 5.5V VCC operation and explicitly supports 5.5V-tolerant inputs regardless of supply voltage. At VCC = 1.65V, VIH is guaranteed at 0.65 × VCC (≥1.07V), allowing reliable recognition of 5V logic-high signals without damage or undefined behavior.

What is the purpose of the two NC pins in the X2-DFN1010-6 package?

Pins 1 and 5 are unconnected die pads with no internal bond wires. They must remain electrically floating or be tied to GND per Diodes' recommended layout-never connected to VCC or signal nets-to avoid introducing parasitic capacitance or leakage paths that could degrade noise immunity or ESD performance.

Does IOFF functionality require external circuitry to activate?

No. IOFF is fully automatic and requires no external control signals or configuration. When VCC drops below ~0.8V, internal circuitry detects power loss and disables both output drivers, limiting leakage current to ≤±10μA-even if input or output pins remain biased at 5.5V during partial power-down sequences.

How does thermal resistance θJA = 445°C/W affect real-world operation in a 10mm² PCB pad layout?

With typical 3.3V/24mA switching, power dissipation stays below 100mW. At θJA = 445°C/W, this yields ~45°C junction rise above ambient-well within the +125°C rating. However, adding a 2oz copper thermal pad beneath the exposed paddle reduces θJA by ~30%, improving reliability in enclosed enclosures or high-ambient environments.