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AX88780 데이터시트(PDF) 39 Page - ASIX Electronics Corporation |
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AX88780 데이터시트(HTML) 39 Page - ASIX Electronics Corporation |
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39 / 55 page ![]() AX88780 39 ASIX ELECTRONICS CORPORATION 6.1.5 DC Characteristics of 3.3V IO Pins Symbol Description Min Typ Max Units VCC3 Power supply of 3.3V IO 3.0 3.3 3.6 V Vil Input low voltage - - 0.8 V Vih Input high voltage 2.0 - - V Vol Output low voltage - - 0.4 V Voh Output high voltage 2.4 V Rpu Input pull-up resistance 40 75 190 K Ω Rpd Input pull-down resistance 40 75 190 K Ω 6.1.6 Transmission Characteristics Symbol Description Conditions Min. Typ. Max. Units Vpp Peak-to-Peak differential output voltage 10BASE-T mode 4.5 5 5.5 V 2xVtxa Peak-to-Peak differential output voltage, 2xVtxa 100BASE-TX 1.9 2 2.1 V Tr/Tf Signal rising/falling time 100BASE-TX 3 4 5 ns Tjit Output jitter 100BASE-TX 1.4 ns Vtxov Overshoot 100BASE-TX 5 % 6.1.7 Reception Characteristics Symbol Description Conditions Min. Typ. Max. Units Rimp Reception impedance 5 KΩ Vsqu Differential squelch voltage 10BASE-TX 300 400 500 mV Vcom Common mode input voltage 1.2 1.6 2 V Lfree Max error-free cable length 100 Meter Figure 6: Transmit waveform specification 0V Tr 10% 90% +Vtxon +Vtxa |
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