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Building DIY wiggler w/74VHC08

2006-01-16 by Ed Schlunder

I'm thinking of building the DIY wiggler so that I can program and
debug some LPC2103 chips on the cheap.

I see the wiggler.txt schematic in the files area. It is using a
74AC244 chip to do voltage level conversion between the PC and the
LPC21xx chip. It only seems to use 4 line drivers of the 74AC244 chip
(half the chip is left unused). 

Would there be any problem with using a 74VHC08 quad 2 input AND gate
chip instead? I would just tie one side of each AND gate high so that
it can be used as 4 line drivers. This chip is cheaper and smaller
than the 74AC244.

The schematic also uses a DTC114 NPN transistor. I don't have any
DTC114 transistors. Would MMBT3904 work okay instead?

Any other tips for a DIY wiggler?

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