Hi i'm working on a project that requires me to interface 2 ICs FT2322C & TMC428. the prob is that their logic levels are different For FT2322C (1st IC, its o/p fed to TMC428) Vol 0.3-0.5 Voh 3.2-4.9 For TMC 428 Vil 0.9-1.2 Vih 1.5-1.9 There aren't ne std chips available for this conv. Can ne1 suggest a method for the conv. Will simple vltg dividers work here? Thnx for the repliens in advance
Logic level conv.
Dec 17, 2004
3 Replies
I think you need a new keyboard, a lot of letters are mssng in yr pst
martin
Serious error. All shortcuts have disappeared. Screen. Mind. Both are blank.
Hi Seems like the TMC is using LVDS levels where the FT is regular LVTTL. LVDS to LVTTL convertors are quite common, try OnSemi/ MICREL/ TI and such on Amnon
"martin griffith" ??? ??????: snipped-for-privacy@4ax.com...
Respectfully disagree. TI has a plethora of parts here:
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such as this one
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which will convert a logic signals between (1.65V to 5.5V) and (1.65V to 5.5V).
Yes, depending on speed requirements.
A single series resistor may also work; this depends on the protection diode inside the input of the 1.8V powered device to limit the voltage.
Regards, Allan
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