[gta02-core] Telit 2.8 V logic
alvieboy at alvie.com
Wed Aug 19 13:58:21 CEST 2009
Werner Almesberger wrote:
> So that would work. The 3.21 uA would come from TX, RTS, and maybe
> DTR. We should have to drive these lines high only when the modem
> is not powered off, so we'd have a total of about 10 uA leakage vs.
> a consumption of 2.4 mA of the idling modem.
> Opinions ?
Personally I prefer using some small level shifters. Like MAX13001E  4x4UCSP (2mm x 2mm), 6 bit wide.
I don't like adding resistor dividers, they will make design more susceptible to EMI interference.
> - Werner
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