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MAX3030ECSE Datasheet(PDF) 7 Page - Maxim Integrated Products |
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MAX3030ECSE Datasheet(HTML) 7 Page - Maxim Integrated Products |
7 / 14 page ±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters _______________________________________________________________________________________ 7 Test Circuits and Timing Diagrams DI_ VOD RL CL CL CL DO_+ DO_- Figure 2. Differential Driver Propagation Delay and Transition Time Test Circuit VOC VOD DI_+ DI_- RL 2 RL 2 Figure 1. Differential Driver DC Test Circuit OUTPUT UNDER TEST CL RL VCC S1 S2 ENABLE SIGNAL IS ONE OF THE POSSIBLE ENABLE CONFIGURATIONS (SEE TRUTH TABLE). Figure 4. Driver Enable/Disable Delays Test Circuit DI 3V 0V DO_- DO_+ VO 0V -VO VO 1.5V 1.5V tDPLH tDPHL 1/2 VO 10% tR 90% 90% 1/2 VO 10% tF VDIFF = V (DO_+) - V (DO_-) VDIFF tSKEW = |tDPLH - tDPHL| Figure 3. Differential Driver Propagation Delay and Transition Waveform OUTPUT NORMALLY LOW OUTPUT NORMALLY HIGH 3V 0V VOL 0V 1.5V 1.5V 1.5V 1.5V EN VOH tDZL tDZH tDLZ tDHZ VOL + 0.3V VOH - 0.3V ENABLE SIGNAL IS ONE OF THE POSSIBLE ENABLE CONFIGURATIONS (SEE TRUTH TABLE). Figure 5. Driver Enable/Disable Waveform DI VCC GND A A DO_- DO_+ Figure 6. Short-Circuit Measurements |
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