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ST485E Datasheet(PDF) 2 Page - STMicroelectronics |
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ST485E Datasheet(HTML) 2 Page - STMicroelectronics |
2 / 13 page ![]() ST485E 2/13 PIN CONFIGURATION PIN DESCRIPTION TRUTH TABLE (DRIVER) X= Don’t Care; Z=High Impedance TRUTH TABLE (RECEIVER) X= Don’t Care; Z=High Impedance ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. PlN N° SYMBOL NAME AND FUNCTION 1 RO Receiver Output 2RE Receiver Output Enable 3 DE Driver Output Enable 4 DI Driver Input 5 GND Ground 6 A Non-inverting Receiver Input and Non-inverting Driver Output 7 B Inverting Receiver Input and Inverting Driver Output 8 VCC Supply Voltage INPUTS OUTPUTS RE DE DI B A XH H L H XH L H L XLX ZZ INPUTS OUTPUT RE DE A-B RO LL ≥ +0.2V H LL ≤ -0.2V L L L INPUTS OPEN H HL X Z Symbol Parameter Value Unit VCC Supply Voltage 7V VI Control Input Voltage (RE, DE) -0.5 to (VCC + 0.5) V VDI Driver Input Voltage (DI) -0.5 to (VCC + 0.5) V VDO Driver Output Voltage (A, B) ± 14 V VRI Receiver Input Voltage (A, B) ± 14 V VRO Receiver Output Voltage (RO) -0.5 to (VCC + 0.5) V |