I'm currently working on a project that requires interfacing to a clock and data line at a configurable voltage between 0V-5V with nonstandard logic levels, this voltage is generated elsewhere. To be able to receive data the lines needs to be able to go into a high impedance state.
I'm currently playing around with a 4066, I have two lines of two pairs hooked together, one channel of the 4066 is hooked to the voltage and the other to ground and I simply drive them inverted. To get a high impedance state I drive both switches low. This being said it doesn't work real well since I'm having trouble hitting the ground rail.
All the buffers I found with tri-state outputs are for digital logic levels, could anyone recommend a analog one or another approach?
(For anyone interested I'm investigating the lowest voltages that I can use to interface to various IC's)
I eventually found this bug, I replaced the the 4066 with one from another manufacturer and it worked...