BUY LM239DRG4 https://www.utsource.net/itm/p/1124691.html
QUAD DIFFERENTIAL COMPARATORS
Description: LM239DRG4 is a quad differential comparator with open-collector outputs. Features: - Wide supply voltage range: 3V to 36V - Low input offset voltage: ±2mV - Low input bias current: ±50nA - Low input offset current: ±50nA - Low output saturation voltage: 0.4V - High speed: 1.5μs - Low power consumption: 1.5mA Applications: - Motor control - Power supply sequencing - Signal conditioning - Audio and video switching - Pulse width modulation - Pulse position modulation - Level detection (For reference only)