Ternary Hardware – CMOS switches
DG403: one chip with resistors
Here I use undocumented feature of DG403 when normally closed switch opened by voltage lower than required to close another (normally opened) switch. Variable resistor is used to move that “both-opened” window to ternary “0″ zone (up from -3.0V…-0.8V to cover 0V).
DG403: two chips - no more components
Second scheme is more “correct” (nothing from undocumented features were used).
P.S. Ternary selector may be used as ternary inverter when RP=-5V, RO=0V, RN=+5V. … Continue Reading
I'm software developer (mostly C/C++) who relocated from Russia to United States in 2004. Lived in NY, CO and now CA. Since 1998 my Internet nickname is "Shaos" (not chaos)...