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SP495 数据表(PDF) 4 Page - Sipex Corporation |
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SP495 数据表(HTML) 4 Page - Sipex Corporation |
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4 / 6 page ![]() SP495 Quad Differential RS-485 Transceiver © Copyright 2000 Sipex Corporation 4 +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 7. Driver Enable and Disable Times +3V 0V DI B A DRIVER OUTPUT VO+ DIFFERENTIAL OUTPUT VA – VB 0V VO– tSKEW tSKEW 1.5V 1.5V tPLH tPLH tR tF f = 1MHz; tR < 10ns; tF < 10ns VO 1/2VO 1/2VO tPHL Figure 6. Driver Propagation Delays VOH VOL R 1.5V 1.5V tPHL f = 1MHz; tR 10ns; tF 10ns OUTPUT V0D2+ V0D2– A – B 0V 0V tPHL INPUT Figure 8. Receiver Propagation Delays |
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