TMUX7436F datasheet(23/47 Pages) TI

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7.7 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 50% of the maximum output voltage. Figure 7-8 shows the

setup used to measure tRESPONSE.

0 V

tRESPONSE (VDD)

Output

VDD + 0.5 V

0 V

Output × 50%

VDD

0 V

tRESPONSE (VSS)

Output

VSS - 0.5 V

0 V

Output × 50%

VSS

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

Max positive fault

Max negative fault

60V/µs

ramp

60 V/µs

ramp

VDD

VSS

VDD

VSS

0.1 µF

S1A

GND

Output

S1B

S2A

Output

S2B

Figure 7-8. Fault Response Time Measurement Setup

7.8 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 final output voltage. Figure 7-9 shows the setup used to measure tRECOVERY.

VDD

VSS

VDD

VSS

0.1 µF

S1A

GND

Output

S1B

S2A

Output

S2B

tRECOVERY (VDD)

Output

VDD + 0.5 V

0 V

Output × 50%

Output

0 V

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

0 V

VSS - 0.5 V

0 V

Output x 50%

tRECOVERY (VSS)

Figure 7-9. Fault Recovery Time Measurement Setup

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TMUX7436F

SCDS459 – OCTOBER 2022

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