.The TLV7042DDFR is a dual nanopower small-size comparator with open-drain output 8-SOT-23-THIN -40 to 125 manufactured by Texas Instruments. It is an ultra-low-power, precision, CMOS comparator featuring a wide common-mode input range, fast response time, low input bias current, and wide supply range. This part is designed to operate on a single supply voltage from +1.8 V to +6 V and dual supplies of +3 V to +6 V and +1.8 V to -4 V. The open-drain output can source or sink up to 25 mA and is available in a tiny 8-SOT-23-THIN package -40 to 125. This device is ideal for low-power, low-voltage, and ultra-small applications such as medical, consumer, and portable designs.