Texas Instruments TMUX1574 2:1 SPDT 4-Channel Switches

Powered-off Protection up to 3.6V on the signal path of the Texas Instruments TMUX1574 provides isolation when the supply voltage is removed (V_DD = 0V). Without this protection feature, switches can back-power the supply rail through an internal ESD diode and cause potential damage to the system.

Fail-Safe Logic circuitry allows voltages on the logic control pins to be applied before the supply pin, protecting the device from potential damage. All control inputs have 1.8V logic-compatible thresholds, ensuring TTL and CMOS logic compatibility when operating in the valid supply voltage range. Integrated pull-down resistor on the logic pins removes external components to reduce system size and cost.