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Input & Output Capacitance

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jogur

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Hi,

The datasheet of the ICs specify i/p & o/p capacitance. What does that actually mean. How is the load capacitance different from these capacitances?

Please clarify.

Thanks
 

kot_b

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Load capacitance - ussualy defined as max. load capacitance - is maximal capacitance, which can be driven by the pin(concerned with max pulse current of the pin).
Input and output capacitances - internal IC capacitances, this affects operation speed.
 

kegode

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ip/op capacitancy exist between the gates when there is no load and load capacitancy comes from the applied load
kegs
 

arnarendra

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input capacitance is the capacitance offered to the driving signal.
Output capacitance is the capability of the output driver i.e. if output capacitance is 50pF, it can drive a maximum of 5 loads of 10pF input capacitance.
 
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