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How to connect 0.1uF to implicit VCC and GND pins (not shown) in certain parts from Eagle distributed libraries?

unebonnevie

Hi,

 

I am using the 74HC154 device, that is, 74154DW (74*154) device from

library 74xx-us, of package SO24W, which is SOIC-24pin format.

 

I put this device in the schematic and notice that VCC and GND pins are

not shown.  How would I have a 0.1uF cap connected to the device's VCC

and GND, since they are not shown?

 

Thanks.

 

Parents

  • On 5/30/2010 5:20 PM, AL wrote:

    Hi,

     

    I am using the 74HC154 device, that is, 74154DW (74*154) device from

    library 74xx-us, of package SO24W, which is SOIC-24pin format.

     

    I put this device in the schematic and notice that VCC and GND pins are

    not shown. How would I have a 0.1uF cap connected to the device's VCC

    and GND, since they are not shown?

     

    Thanks.

    You could also just connect the cap to the VCC and GND nets by drawing

    nets from the pins and NAMEing the nets to VCC and GND. But I would

    always INVOKE, I do not trust the implicit power connections at all!

     

Reply

  • On 5/30/2010 5:20 PM, AL wrote:

    Hi,

     

    I am using the 74HC154 device, that is, 74154DW (74*154) device from

    library 74xx-us, of package SO24W, which is SOIC-24pin format.

     

    I put this device in the schematic and notice that VCC and GND pins are

    not shown. How would I have a 0.1uF cap connected to the device's VCC

    and GND, since they are not shown?

     

    Thanks.

    You could also just connect the cap to the VCC and GND nets by drawing

    nets from the pins and NAMEing the nets to VCC and GND. But I would

    always INVOKE, I do not trust the implicit power connections at all!

     

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