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SP490ECP Datasheet(PDF) 4 Page - Sipex Corporation |
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SP490ECP Datasheet(HTML) 4 Page - Sipex Corporation |
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4 / 12 page  SP490EDS/14 SP490E Enhanced Full Duplex RS-485 Transceivers © Copyright 2000 Sipex Corporation 4 Figure 5. Driver Propagation Delays +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 Figure 6. Driver Enable and Disable Times Figure 7. Receiver Propagation Delays Y, Z Y, Z +3V 0V DI Z Y DRIVER OUTPUT VO+ DIFFERENTIAL OUTPUT VY – VZ 0V VO– 1.5V 1.5V tPLH tR tF f = 1MHz; tR < 10ns; tF < 10ns VO 1/2VO 1/2VO tPHL tDPLH tDPHL tSKEW = | tDPLH - tDPHL | VOH VOL R 1.5V 1.5V tPHL f = 1MHz; tR < 10ns; tF < 10ns OUTPUT V0D2+ V0D2– Y – Z 0V 0V tPLH INPUT tSKEW = | tPHL - tPLH | |
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