Use this TSM109AIDT comparator circuit from STMicroelectronics to interface with digital logic circuits and easily compare between two input signals. Its typical dual supply voltage is ±3|±5|±9|±12|±15 V, with a minimum of ±1 V and maximum of ±18 V. This comparator has a minimum operating temperature of -40 °C and a maximum of 105 °C. This device is made with bipolar technology. This device uses one or two power supplies. It has 2 channels per chip.