The LTC331/393 single-/dual- channel comparators are drop-in, pin-for-pin compatible replacements for the LMV331/LMV393, and low-voltage versions of TL331/LM393. The devices with open-drain output offer the ultimate combination of high speed (100 ns propagation delay) and very low power consumption (37 μA), and feature such as rail-torail inputs, low offset voltage (typically 1 mV), large output drive current, and a wide range of supply voltages from 1.8 V to 5.5 V. The devices are very easy to implement in a wide variety of applications where require critical response time, power-sensitive, lowvoltage, and/or tight board space.

Advantages of the LTC331/393 also include the added benefit of internal hysteresis provide noise immunity, preventing output oscillations even with slow-moving input signals. Designed with the most modern techniques, the LTC331/393 achieve superior performance over BiCMOS or bipolar versions on the market.

The LTC331 (single) is available in both SOT23-5L and SC70-5L packages. The LTC393 (dual) is offered in DFN-8L, SOIC-8L, MSOP-8L and TSSOP-8L packages. All devices are rated over -40 ℃ to +85 ℃ industrial temperature range.


Advantages And Characteristics

  • Micro-power Operating Current (37 μA) Preserves Battery Power
  • Fast 100 ns Propagation Delay (100-mV Overdrive)
  • Single 1.8 V to 5.5 V Supply Voltage Range
– Can be Powered From the Same 1.8V/2.5V/3.3V/5V System Rails
  • Rail-to-Rail Input
  • Open-Drain Output Current Drive: 30 mA Typically at 5V Supply
  • Internal Hysteresis for Clean Switching
  • Internal RF/EMI Filter
  • Operating Temperature Range: -40 ℃ to +85 ℃



  • Consumer Accessories
  • Portable and Battery-Powered Devices
  • Alarms and Monitoring Circuits
  • Threshold Detectors and Discriminators
  • Logic Level Shifting or Translation
  • Zero-Crossing Detectors
  • Window Comparators
  • IR Receivers
  • Line Receivers

Friendship Link Baidu