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Altera_Forum
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11 years ago

Cyclone V IO Drive Power Maximum Capacitive Load

Dear community, What is the maximum capacitive load that a Cyclone V IO can drive? I know the IOs have a capacitance of 6 pF when used as input, but I couldn't find information about the maxi...
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Altera_Forum
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11 years ago

Hi Adam -

There is no hard limit, but the more load capacitance the slower the output signal will transition. If you're in no hurry you can put as much load capacitance out there as you like. For some interfaces, like I2C, the standard specifies a maximum total bus capacitance in order to operate at the specified speed. But even then, if you slow down there is no limit on bus capacitance.

What are you trying to do?