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BUY LM293N https://www.utsource.net/itm/p/838406.html
8-Bit Shift Registers With 3-State Output Registers 16-TSSOP -40 to 85
Description: The LM293N is a dual differential comparator from STMicroelectronics. Features: - Low power consumption - High input impedance - Low input offset voltage - Low output saturation voltage - High common-mode rejection ratio - Low propagation delay Applications: - Voltage monitoring - Temperature sensing - Level detection - Motor control - Signal conditioning - Pulse width modulation - Frequency to voltage conversion (For reference only)