ZHCSPX3A October 2022 – November 2022 TMUX7436F
PRODMIX
Table 8-1 and Table 8-2 provides the truth tables for the TMUX7436F under normal and fault conditions.
| EN | SEL2 | SEL1 | Normal Condition | Fault Condition | |||
|---|---|---|---|---|---|---|---|
| State of Specific Flag (SF) when fault occurs on | |||||||
| On Switch | S1A | S1B | S2A | S2B | |||
| 0 | 0 | 0 | None | 0 | 1 | 1 | 1 |
| 0 | 0 | 1 | None | 1 | 0 | 1 | 1 |
| 0 | 1 | 0 | None | 1 | 1 | 1 | 0 |
| 0 | 1 | 1 | None | 1 | 1 | 0 | 1 |
| 1 | 0 | 0 | S1B, S2B | 0 | 1 | 1 | 1 |
| 1 | 0 | 1 | S1A, S2B | 1 | 0 | 1 | 1 |
| 1 | 1 | 0 | S1B, S2A | 1 | 1 | 1 | 0 |
| 1 | 1 | 1 | S1A, S2A | 1 | 1 | 0 | 1 |
Take note, more than one source pin can be in fault at a given time. As Table 8-1 provides, the SF pin will assert low even when multiple source pins are under fault.
|
DR PIN STATE |
Dx State During Fault Condition |
|---|---|
| 0 | Pulled up to VDD or VSS |
| 1 | Open (HI-Z) |
If unused, then SELx pins must be tied to GND to ensure the device does not consume additional current (for more information, refer to Implications of Slow or Floating CMOS Inputs. Unused signal path inputs (Sx or Dx) should be connected to GND.