LM393DR – TEXAS INSTRUMENTS

The LM393DR is a dual differential comparator offering fast response times and low power consumption. Each comparator in the device operates from a wide supply voltage range of 2V to 36V (single-supply) or ±1V to ±18V (dual-supply), making it highly versatile for analog signal processing in both industrial and consumer electronics. The open-collector output allows for wired-AND configurations and interfacing with logic circuits. It has a typical response time of 1.3 µs and features a low input offset voltage (2 mV typical), enabling accurate threshold detection. The LM393DR supports low input bias current, contributing to precision in sensor applications. Packaged in a standard 8-SOIC, it is easy to use in compact PCB layouts. Its low power draw makes it especially suitable for battery-operated devices, while its robust design fits well in harsh environments. Common applications include zero-crossing detectors, overvoltage/undervoltage detection, and level shifters. The LM393DR is a workhorse comparator trusted across decades of analog design.