74ALVC86MX

Overview

The Fairchild Semiconductor 74ALVC86MX is a Quad 2-Input Exclusive OR (XOR) gate integrated circuit belonging to the 74ALVC logic family. It operates within a supply voltage range of 1.65 V to 3.6 V and features low-voltage tolerant inputs and outputs rated for 3.6 V tolerance. The device utilizes advanced silicon-gate CMOS technology to achieve high-speed performance with a typical propagation delay of 4.2 ns. It provides an output drive capability of 24 mA and functions reliably across an operating temperature range of -40°C to +85°C. The component is housed in a 14-pin SOIC-Narrow package.

Feature Summary

• Provides four independent 2-input exclusive OR logic functions in a single package
• Supports low-voltage operation from 1.65 V to 3.6 V with 3.6 V tolerant I/O
• Delivers high-speed switching with a typical propagation delay of 4.2 ns
• Offers strong output drive capability of 24 mA for reliable signal transmission

Applications

• Digital data path selection and multiplexing circuits
• Parity generation and error detection systems
• High-speed arithmetic logic units requiring XOR functionality
• Low-voltage digital interface translation between different logic domains

Procurement Notes

Verify the specific manufacturer marking, as Fairchild Semiconductor has undergone corporate restructuring and the brand is now associated with onsemi. Confirm the package type matches the required 14-SOIC footprint and ensure the voltage specifications align with the target system's power rails. Check for any obsolescence notices or lifecycle status updates from the current supplier, as availability may vary based on production history.

Selection Notes

Select this component when designing low-voltage digital systems requiring exclusive OR operations with high speed and moderate drive strength. It is suitable for applications where 3.6 V tolerance is necessary for interfacing with slightly higher voltage nodes while maintaining a 1.65 V core supply. Consider the 14-SOIC package constraints and thermal characteristics during PCB layout. Ensure input signals remain within the specified voltage limits to prevent damage.

Part Context

The 74ALVC86MX belongs to the ALVC (Advanced Low-Voltage CMOS) family, which bridges the performance gap between standard LVCMOS and faster AC/LV families. This series is designed for portable and battery-powered applications due to its wide voltage range and low power consumption. The XOR function is fundamental in digital logic for comparison and arithmetic operations, making this IC a common building block in communication and computing hardware.

Replacement Considerations

Check for direct pin-compatible alternatives such as the MM74HC86MX, noting that HC series typically operates at higher voltages (2–6 V). Verify if other manufacturers offer equivalent ALVC-series XOR gates with identical electrical characteristics and package dimensions to ensure seamless integration without redesign.