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ICS1889 数据表(PDF) 26 Page - Integrated Circuit Systems |
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ICS1889 数据表(HTML) 26 Page - Integrated Circuit Systems |
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26 / 35 page ![]() 26 ICS1889 T# PARAMETER (conditions) MIN TYP MAX UNITS t 1 MII Input Pin Capacitance —8 — pF t 2 MII Output Pin Capacitance — 14 — pF t 3 MII Input Pin Impedance — 33 — Ohms T# PARAMETER (conditions) MIN TYP MAX UNITS t 1 REF_IN Duty Cycle 40 50 60 % t 2 REF_IN Period —40 — ns t 3 REF_IN rise to TXCLK rise 0 1.5 3 ns Additional DC Electrical Specifications THE TIMING VALUES ARE PRELIMINARY AND SUBJECT TO CHANGE. Clocks Reference In (REF-IN/REF+) To Transmit Clock TXCLK Note: REF-IN switching point is 50% of VDD. |
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