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AC208-DS03-R 数据表(PDF) 48 Page - Broadcom Corporation. |
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AC208-DS03-R 数据表(HTML) 48 Page - Broadcom Corporation. |
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48 / 58 page ![]() AC208 Preliminary Data Sheet 07/08/02 B roa dcom Page 40 Operating Range Document AC208-DS04-405-R REFCLK PINS I/O CHARACTERISTICS—LED PINS Table 43: TTL I/O Characteristics Parameter Symbol Conditions Minimum Typical Maximum Units Input Voltage High Vih 2.0 V Input Voltage Low Vil 0.8 V Input Current Ii –10 10 mA Output Voltage High Voh 2.0 V Output Voltage Low Vol 0.4 V Output Current High Ioh 8 mA Output Current Low Iol -8 mA Input Capacitance Ci 10 pF Output Transition Time 3.15V < VCC < 3.45V 5 ns Tristate Leakage Current |Ioz| 10 uA Table 44: REFCLK Pins Parameter Symbol Conditions Minimum Typical Maximum Units Input Voltage Low Vil 0.8 V Input Voltage High Vih 2.0 V Input Clock Frequency Tolerance F 100 ppm Input Clock Duty Cycle Tdc 40 60 % Input Capacitance Cin 3.0 pF Table 45: I/O Characteristics—LED Pins Parameter Symbol Conditions Minimum Typical Maximum Units Output Low Voltage Vol 0.4 V Output High Voltage Voh V Input Current Ii 27 mA Output Current Io mA |
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