Micropower Low-Voltage Rail-to-Rail Comparators These STMicroelectronics TS33x Micropower Low Voltage Rail-to-Rail Comparators are available in single (TS331), dual (TS332) and quad (TS334) versions. They can operate with a supply voltage ranging from 1.6 to 5 V with a typical current consumption as low as 20 μA. In addition, rail-to-rail inputs make them a perfect choice for low-voltage applications. Their availability in tiny packages is a real advantage for space saving constraints. The TS33x are specified for a wide temperature range of -40°C to +125°C, making them ideal for a wide range of applications.