BUY LM339EDR2G https://www.utsource.net/itm/p/7529693.html
Comparator General Purpose
Description: The LM339EDR2G is a quad differential comparator with an open-collector output stage. Features: - Wide common-mode (up to VCC +) and differential voltage range - Low supply current (500 μA) - Low input bias current (50 nA) - Low input offset voltage (2 mV) - Output voltage compatible with TTL, DTL, ECL, MOS, and CMOS logic - Output source/sink capability of 20 mA Applications: - Voltage monitoring - Temperature sensing - Current sensing - Pulse width modulation - Motor speed control - Level detection - Pulse generation - Time delay generation (For reference only)