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BUY LM319D https://www.utsource.net/itm/p/1204994.html
Dual voltage comparator
Description: LM319D is a low-power, dual-channel comparator with an open-collector output. Features: Low power consumption Wide supply voltage range (2.7 V to 36 V) Low input offset voltage Low input bias current Output can be connected to other open-collector outputs High output current capability Low propagation delay Low output saturation voltage High common-mode rejection ratio Low temperature coefficient Operates from -40°C to +125°C Applications: Voltage monitoring Motor control Signal conditioning Pulse width modulation Level detection Timing circuits Temperature sensing Over-current protection (For reference only)