Diodes Incorporated 74LVC1G32FW5-7

Overview

74LVC1G32FW5-7 from Diodes Incorporated is a single 2-input positive OR gate in X1-DFN1010-6 (Type B) 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 enables voltage-level shifting and signal isolation in compact portable electronics.

For engineers reviewing the 74LVC1G32FW5-7 datasheet, 74LVC1G32FW5-7 pinout, 74LVC1G32FW5-7 application, or 74LVC1G32FW5-7 equivalent, key selection criteria include mixed-voltage interface capability, sub-1ns propagation delay at 3.3V, thermal resistance of 435°C/W (Junction-to-Ambient), and 0.35mm pad pitch compatibility with fine-pitch PCB assembly.

Technical Context

This device implements the Boolean function Y = A + B using CMOS logic with push-pull outputs. Its IOFF circuit actively disables outputs during power-down to prevent backflow current, supporting hot-swap and partial-power-down system architectures.

Input tolerance up to 5.5V allows direct interfacing between 1.8V/2.5V/3.3V logic domains and 5V peripherals without external level shifters. Propagation delay is specified from 0.5ns (min) to 6.0ns (max) at 3.3V over –40°C to +125°C.

Key Specifications

Pinout & Package

X1-DFN1010-6 (Type B) is a 1.0mm × 1.0mm × 0.5mm leadless surface-mount package with 6 terminals and 0.35mm pad pitch, optimized for space-constrained portable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G32DBVR and 74LVC1G32FS3-7, the 74LVC1G32FW5-7 offers optimal balance of miniaturization (1.0mm²), thermal performance (435°C/W), and manufacturability (0.35mm pitch with standard Type B DFN land pattern).

Availability

74LVC1G32FW5-7 is available at Aetrix Electronics and suitable for portable electronics, USB-C interface design, wearable sensor hubs, and industrial I/O modules requiring stable component supply and long-term lifecycle support.

Supply support for 74LVC1G32FW5-7 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 mixed-signal solutions for power management, signal integrity, and connectivity applications.

The 74LVC logic family delivers low-voltage, high-speed CMOS performance for portable and battery-powered systems where space, power, and voltage flexibility are critical.

FAQ

What is the maximum allowable input voltage on pins A and B?

The absolute maximum input voltage rating is 6.5V, but the device is specifically characterized for 5.5V-tolerant operation under recommended conditions. This means inputs can safely accept 5V signals even when VCC is as low as 1.65V, enabling seamless mixed-voltage interfacing without external components.

Does the NC pin require any PCB layout treatment?

Pin 5 (NC) is internally unconnected and must not be soldered to any net. Per Diodes' layout guidance, it should either remain floating or be tied to GND using a non-functional copper pour to maintain thermal symmetry and mechanical stability during reflow.

How does IOFF functionality behave during power sequencing?

When VCC drops below ~0.8V, the IOFF circuit automatically places the Y output in high-impedance state, blocking reverse current flow from other powered sections of the system. This behavior is guaranteed down to –40°C and eliminates risk of latch-up or damage during asymmetric power-up/down sequences.

Can this device drive a 50pF load at 10MHz without signal degradation?

Yes - with typical Cpd = 21pF at 3.3V and 10MHz, the device dissipates only ~0.2mW dynamically. Measured tpd remains ≤6.0ns under 50pF load, and output drive (±24mA) ensures clean edges with <10% overshoot, meeting setup/hold timing for downstream LVC receivers.