TTP223-BA6-TD

TTP223-BA6-TD is the SOT-23-6 ordering code for the TDSEMIC single-key capacitive touch controller, named word-for-word throughout TDSEMIC’s own document for the part (the maker’s own specification document, printed with the manufacturer’s tdsemic.com domain) - the figures here are TDSEMIC’s, not those of the originator of the TTP223 designation. Working voltage is 2.0 V minimum, 3.0 V typical and 5.5 V maximum, operating current is 2.5 µA typical and 7.0 µA maximum at a 3.0 V supply, input low level is 0 to 0.2 of VDD and input high level is 0.8 to 1.0 of VDD, output sink current is 10 mA typical and source current -6.0 mA typical at 3 V, over a -20 °C to +70 °C working range with a 4 kV ESD rating; two strap pins select momentary or toggle behaviour and the active output level, neither may be left floating, and sensitivity is set by an external capacitor at the sense pin. The selection point is a sealed single touch key behind glass or plastic: appliance panels, lighting switches and access controls that replace a mechanical button with no moving parts. Selection advice: prototype the sense-pad size and the sensitivity capacitor together against the final panel thickness - bench results on a bare board do not transfer to the assembled product. Parameters verified against the TDSEMIC TTP223-BA6-TD specification document (electrical parameters and pin definition).