Re: [SI-LIST] : Number of GND/Power pins in a connector ?

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From: Jim Freeman (freeman@broadcom.com)
Date: Thu Mar 23 2000 - 13:15:07 PST


Hi Stuart,
    You don't specify the signalling system going thru the connector. If the signalling system has the threshold assymetrically placed in the voltage supply range, then your statement is most probably
correct. If the threshold is equidistant from the edge of the power supply range, then VCC bounce is just as deadly as GND bounce.

Jim Freeman

Stuart Adams wrote:

> How do I calculate the number of ground and power
> pins I need in a board-to-board connector.
>
> The number of grounds is a function of switching
> current and how many signals will switch at the same
> time, correct ?
>
> More grounds is always better but what about power pins ??
>
> If one or two pins are sufficient to carry the max steady
> state current and my board is well bypassed with bulk and
> ceramic caps, is there a need for alot more power pins ?
>
> -- Stuart
>
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