TMUX7411F datasheet(18/30 Pages) TI

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8.5 Input and Output Leakage Current Under Overvoltage Fault

If any of the source pin voltage goes above the supplies (VDD or VSS), the overvoltage protection feature of the

TMUX7411F, TMUX7412F, and TMUX7413F is triggered to turn off the switch under fault, keeping the fault

channel in high-impedance state. IS(FA) and ID(FA) denotes the input and output leakage current under

overvoltage fault conditions, respectively. When the overvoltage fault occurs, the supply (or supplies) can either

be in normal operating condition (Figure 8-4) or abnormal operating condition (Figure 8-5). During abnormal

operating condition, the supply (or supplies) can either be unpowered (VDD= VSS = 0 V) or floating (VDD= VSS =

no connection), and remains within the leakage performance specifications.

Is (FA)

VDD

VSS

GND

IS(FA) / ID(FA)

Is (FA)

GND

ID (FA)

GND

ID (FA)

( |VS| > |VDD + VT| or |VSS - VT| )

Figure 8-4. Measurement Setup for Input and Output Leakage Current under Overvoltage Fault with

Normal Supplies

Unpowered

(VDD = VSS = GND = 0 V)

N.C.

Is (FA)

VDD

VSS

GND

Is (FA)

GND

ID (FA)

GND

ID (FA)

GND

Is (FA)

VDD

VSS

GND

Is (FA)

GND

ID (FA)

GND

ID (FA)

Floating

(VDD = VSS = N.C.)

Figure 8-5. Measurement Setup for Input and Output Leakage Current under Overvoltage Fault with

Unpowered or Floating Supplies

TMUX7411F, TMUX7412F, TMUX7413F

SCDS404 – MARCH 2021

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