Diodes Incorporated 74LVC1G32FX4-7

Overview

74LVC1G32FX4-7 from Diodes Incorporated is a single 2-input positive OR gate in X2-DFN1409-6 chip-scale package, operating from 1.65V to 5.5V supply, with 5.5V-tolerant inputs and ±24mA output drive at 3.3V. It supports partial power-down via IOFF, prevents backflow current during power-down, and performs the Boolean function Y = A + B. It is used in voltage level shifting and signal isolation within compact portable electronics.

For engineers reviewing the 74LVC1G32FX4-7 datasheet, 74LVC1G32FX4-7 pinout, 74LVC1G32FX4-7 application, or 74LVC1G32FX4-7 equivalent, key selection criteria include mixed-voltage interface capability, IOFF-enabled power-down safety, low-threshold input compatibility across 1.65–5.5V rails, and thermal performance in ultra-small DFN packages.

Technical Context

This device implements a non-inverting OR logic function (Y = A + B) using CMOS technology with push-pull output stage. Its IOFF circuit actively disables outputs when VCC = 0V, blocking current flow between powered and unpowered domains - critical for hot-swap and partial-power-down systems.

Input tolerance up to 5.5V enables direct interfacing with higher-voltage logic families while powered from lower supplies (e.g., 1.8V or 3.3V). Propagation delay is 2.1 ns typical at 3.3V, with input transition rate support up to 10 ns/V, ensuring reliable timing in high-speed digital control paths.

Key Specifications

Pinout & Package

X2-DFN1409-6 is a 0.4 mm profile, 1.4 mm × 0.9 mm chip-scale package with six terminals and exposed die pad (non-electrical). Pin 1 identification is marked by a circular fiducial on the top surface.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2-input OR gate applications.

Compared with SN74LVC1G32DBVR and 74LVC1G32FW4-7, the 74LVC1G32FX4-7 delivers optimal trade-off between miniaturization (1.4 mm × 0.9 mm), thermal margin (470°C/W), and assembly yield (0.5 mm pad pitch), making it ideal for next-gen portable and wearables where size and reliability are co-constrained.

Availability

74LVC1G32FX4-7 is available at Aetrix Electronics and suitable for USB device power control, IoT sensor hub signal aggregation, and mobile display backlight enable requiring stable component supply across high-mix, low-volume production runs.

Supply support for 74LVC1G32FX4-7 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 solutions for consumer, industrial, and automotive markets.

The 74LVC logic family targets low-voltage, mixed-rail digital interfacing - designed specifically for voltage translation, signal conditioning, and power-aware logic in space- and power-constrained applications.

FAQ

Can 74LVC1G32FX4-7 operate reliably at 1.65V supply?

Yes. The device is fully specified down to 1.65V: VIH is guaranteed at 0.65×VCC (≥1.07V), VOL remains ≤0.45V at 4mA load, and tPD is 8.0ns max over temperature. All DC and AC parameters meet datasheet limits at this minimum rail, enabling use in single-cell Li-ion or coin-cell systems.

What is the role of the NC pin in X2-DFN1409-6?

The NC (No Connection) pin is internally unconnected and serves solely as a mechanical alignment aid and thermal relief pad. It must not be soldered to ground or VCC; Diodes Incorporated recommends leaving it floating or omitting the pad entirely in PCB layout to avoid unintended coupling or solder bridging.

How does IOFF protect during partial power-down?

When VCC drops below ~0.2V, the IOFF circuit disables both output FETs, increasing output impedance to >10 MΩ and limiting leakage to ±200 μA. This prevents reverse current flow from powered downstream logic into the unpowered gate, avoiding bus contention and potential damage in multi-rail systems.

Is 74LVC1G32FX4-7 qualified for automotive applications?

No. While the device meets AEC-Q100 stress test conditions in some lots, it is not officially AEC-Q100 qualified. Diodes Incorporated explicitly states that automotive-grade versions require separate part numbers (e.g., with "-Q" suffix) and PPAP documentation - contact their automotive team for qualified alternatives.