solarwind wrote:
>I just sampled some MAX233A chips (TTL <---> RS-232 drivers). These
> are the newer ones that require no external caps for the charge pumps.

Yeah, it's great that you don't need external caps for charge pumps, but you 
end up overpaying $8 per IC compared to, say, MAX221. Is it really worth it?

Vitaliy 

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