Other Parts Discussed in Thread: TMUXHS221, TMUX1574
Dear Team,
My customer have four questions of SN74CBTLV3245A below, thanks.
One TMUXHS221 is connected to the board, can the following two scenarios be realized?
Scenario 1 (SEL=0), pcie5.0 refclk input input to D+/-, through this switch demux to DA+/- channel; the other DB+/- is empty and has no connection
Scenario 2 (SEL=1), two single-ended bidirectional IO signals are connected to D+/-, through this switch demux to DB+/- channel, and the other DA+/- is empty without connection
2. For the channel switching of TMUXHS221, is there any processing such as shaping the signal, and what processing has been done specifically? Or is it similar to an SPDT analog switch?
3. Assume that A and B ports on both sides of SN74CB5LV3245A are not pulled up and down, and OE#=L enables the chip. At this time, if A port= high-impedance, what is the state of B (H, L or high-impedance)?
4. Assume that S[1:4]A and S[1:4]B on the left side of TMUX1574 do not pull up and down, and D[1:4] on the right side do not pull up and down, OE#=L enables the chip, SEL=0 or 1. At this time, if S[1:4]A or S[1:4]B= high-impedance, what is the state of D[1:4] on the right side (H, L or high-impedance)?
Many Thanks,
Jimmy
