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BUY LM219D https://www.utsource.net/itm/p/501808.html
Dual voltage comparator
Description: Dual Comparator Features: Low Input Bias Current: 500 nA Low Input Offset Voltage: 2 mV Low Supply Current: 1.2 mA Low Output Saturation Voltage: 0.4 V Wide Supply Voltage Range: 3 V to 36 V Low Propagation Delay: 15 ns Outputs Can Drive Up to 10 LSTTL Loads Inputs are TTL and CMOS Compatible Outputs Source/Sink Current: 10 mA Applications: Motor Control Temperature Control Audio Processing Battery-Powered Systems Level Detection Pulse Width Modulation Timing and Sequencing (For reference only)