D82C55AC-2

- A
- aleksa
  
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posted
15 years ago

Tue, May 20, 2008 7:06 PM

I've bought 10 pcs of "82C55" through mail, and received D82C55AC-2.

The problem is that the output high voltage of any pin is not 5V, but

3.8V.

Nothing is connected to the port pins, VCC is 4.85V.

Am I wrong thinking that CMOS chips should have far more than 3.8V on output pins?

Thanks

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- D
- Don McKenzie
  
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posted
15 years ago

Tue, May 20, 2008 8:35 PM

google a data sheet. will be there.

Cheers Don...

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Don McKenzie

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- E
- Eeyore
  
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posted
15 years ago

Wed, May 21, 2008 5:56 AM

Probably an old design.

Graham

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