TMUX7412F datasheet(26/48 Pages) TI2

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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) by one threshold voltage (VT), then the

overvoltage protection feature of the TMUX7411F, TMUX7412F, and TMUX7413F is triggered to turn off the

switch under fault, keeping the fault channel in a 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 8-5) or abnormal operating condition

(Figure 8-6). 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) / ID(FA)

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

Is (FA)

GND

Is (FA)

ID (FA)

VDD

VSS

Figure 8-5. 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 8-6. Measurement Setup for Input and Output Leakage Current under Overvoltage Fault with

Unpowered or Floating Supplies

TMUX7411F, TMUX7412F, TMUX7413F

SCDS404B – MARCH 2021 – REVISED NOVEMBER 2022

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