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ST491ACD Datasheet(PDF) 2 Page - STMicroelectronics |
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ST491ACD Datasheet(HTML) 2 Page - STMicroelectronics |
2 / 12 page ST491A 2/12 PIN CONFIGURATION PIN DESCRIPTION TRUTH TABLE (DRIVER) X= Don’t Care; Z=High Impedance TRUTH TABLE (RECEIVER) ?= Irrelevant; X= Don’t Care; Z=High Impedance PlN N° SYMBOL NAME AND FUNCTION 1 NC Not Connected 2 RO Receiver Output. 3 RE Receiver Output Enable 4 DE Driver Output Enable 5 DI Inverting Driver Input. 6 GND Ground 7 GND Ground 8 NC Not Connected 9 Y Non-inverting Driver Output 10 Z Inverting Driver Output 11 B Inverting Receiver Input 12 A Non-inverting Receiver Input 13 NC Not Connected 14 VCC Supply Voltage INPUT OUTPUTS DI DE Y Z LHL H HHH L XL Z Z INPUT OUTPUT A-B RE RO ≥ -0.2V L H between -0.2V to 0.2V L ? ≤ -0.2V L L OPEN L H XH Z |
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