TMUX7412F datasheet(25/42 Pages) TI

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8.6 Fault Response Time

Fault response time (tRESPONSE) measures the delay between the source voltage exceeding the supply voltage

(VDD or VSS) by 0.5 V and the drain voltage failing to 90% of the fault supply voltage exceeded. Figure 8-7 shows

the setup used to measure tRESPONSE.

0 V

tRESPONSE (VDD)

Output

VDD + 0.5 V

0 V

Output × 90%

VDD

0 V

tRESPONSE (VSS)

Output

VSS - 0.5 V

0 V

Output × 90%

VSS

tRESPONSE = max ( tRESPONSE(VDD), tRESPONSE(VSS))

VDD

VSS

VDD

VSS

0.1 µF

All other source &

drain pins

Output

60V/µs

ramp

Max positive fault

60V/µs

ramp

Max negative fault

Figure 8-7. Fault Response Time Measurement Setup

8.7 Fault Recovery Time

Fault recovery time (tRECOVERY) measures the delay between the source voltage falling from overvoltage

condition to below supply voltage (VDD or VSS) plus 0.5 V and the drain voltage rising from 0 V to 50% of

the fault supply voltage exceeded. Figure 8-8 shows the setup used to measure tRECOVERY.

tRECOVERY (VDD)

Output

VDD + 0.5 V

0 V

VDD × 0.5

Output

0 V

tRECOVERY = max ( tRECOVERY(VDD), tRECOVERY(VSS))

0 V

VSS - 0.5 V

0 V

VSS × 0.5

tRECOVERY (VSS)

GND

VDD

VSS

VDD

VSS

GND

0.1 µF

GND

0.1 µF

GND

All other

source &

drain pins

Output

VDD - 2 V

VSS + 2 V

Figure 8-8. Fault Recovery Time Measurement Setup

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TMUX7411F, TMUX7412F, TMUX7413F

SCDS404A – MARCH 2021 – REVISED NOVEMBER 2021

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