Turn-on time is defined as the time taken by the output of the device to rise to 90% after the enable has risen

past the logic threshold. The 90% measurement is utilized to provide the timing of the device. System level

timing can then account for the time constant added from the load resistance and load capacitance. Figure 7-7

Turn-off time is defined as the time taken by the output of the device to fall to 10% after the enable has fallen

past the logic threshold. The 10% measurement is utilized to provide the timing of the device. System level

timing can then account for the time constant added from the load resistance and load capacitance. Figure 7-7

3 V

0 V

50%

50%

10%

90%

Output

0.1 µF

0.1 µF

GND

0 V

S1A

D1

Output

S1B

S2A

D2

Output

S2B

EN

Figure 7-5. Turn-On and Turn-Off Time Measurement Setup

7.6 Break-Before-Make

Break-before-make delay is a safety feature that prevents two inputs from connecting when the device is

switching. The output first breaks from the on-state switch before making the connection with the next on-state

switch. The time delay between the break and the make is known as break-before-make delay. Figure 7-6 shows

0.1 µF

0.1 µF

S1A

GND

D1

SELx

S1B

3 V

0 V

80%

Output

0 V

Output

S2A

D2

S2B

Output

Figure 7-6. Break-Before-Make Delay Measurement Setup

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TMUX7236

SCDS417A – MARCH 2022 – REVISED JULY 2022

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