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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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SP481ECP Scheda tecnica(PDF) 5 Page - Sipex Corporation |
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SP481ECP Scheda tecnica(HTML) 5 Page - Sipex Corporation |
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5 / 11 page  5 Rev. 5/16/03 SP481E Low Power Half-Duplex RS485 Transceivers © Copyright 2003 Sipex Corporation INPUTS OUTPUTS LINE RE DE DI CONDITION B A X1 1 No Fault 0 1 X1 0 No Fault 1 0 X0 X X ZZ X1 X Fault Z Z INPUTS OUTPUTS RE DE A - B R 00 +0.2V 1 00 -0.2V 0 00 Inputs Open 1 10 X Z Table 1. Transmit Function Truth Table Table 2. Receive Function Truth Table +3V 0V DE 5V VOL A, B 0V 1.5V 1.5V tZL tZH f = 1MHz; tR < 10ns; tF < 10ns VOH A, B 2.3V 2.3V tLZ tHZ 0.5V 0.5V Output normally LOW Output normally HIGH +3V 0V RE 5V R 0V 1.5V 1.5V tZL tZH f = 1MHz; tR < 10ns; tF < 10ns R 1.5V 1.5V tLZ tHZ 0.5V 0.5V Output normally LOW Output normally HIGH VIL VIH Figure 8. Receiver Enable and Disable Times Figure 7. Receiver Propagation Delays Figure 6. Driver Enable and Disable Times VOH VOL R 1.5V 1.5V tPHL f = 1MHz; tR < 10ns; tF < 10ns OUTPUT V0D2+ V0D2– A – B 0V 0V tPLH INPUT tSKEW = | tPHL - tPLH | |
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