The TMUX7462F operates across a wide supply range of ±5 V to ±22 V (8 V to 44 V in single-supply mode). The device also performs well with asymmetrical supplies such as V_DD = 12 V and V_SS= –5 V. For improved supply noise immunity, use a supply decoupling capacitor ranging from 1 µF to 10 µF at the V_DD and V_SS pins to ground. Always ensure the ground (GND) connection is established before supplies are ramped.

The fault supplies (V_FP and V_FN) provide the current required to operate the fault protection, and thus, must be low impedance supplies. They can be derived from the primary supplies by using a resistor divider and buffer or be an independent supply rail. The fault supplies must not exceed the primary supplies as it might cause unexpected behavior of the switch. Use a supply decoupling capacitor ranging from 1 µF to 10 µF at the V_FP and V_FN pins to ground for improved supply noise immunity.

The positive supply, V_DD, must be ramped before the positive fault rail, V_FP, for proper power sequencing of the TMUX7462F. Similarly, the negative supply, V_SS, must be ramped before the negative fault voltage rail, V_FN.