GND

VDD

0 V

ENABLE

DRIVE

(VEN)

VIL

VIH

tON (EN)

tOFF (EN)

90%

OUTPUT

0 V

tr < 5ns

tf < 5ns

90%

VDD

VDD

0.1 F

VS

OUTPUT

RL

CL

S1A

D1

S1B

VS

OUTPUT

RL

CL

S4A

D4

S4B

VEN

EN

VIH

VIL

tTRANSITION

10%

90%

OUTPUT

0 V

ADDRESS

DRIVE

(VSEL)

VDD

tTRANSITION

VSEL

0 V

tr < 5ns

tf < 5ns

GND

VS

OUTPUT

RL

CL

S1A

D1

SEL

VDD

VDD

0.1 F

S1B

VS

OUTPUT

RL

CL

S4A

D4

S4B

16

TMUX1574

SCDS391C – OCTOBER 2018 – REVISED DECEMBER 2019

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Product Folder Links: TMUX1574

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Copyright © 2018–2019, Texas Instruments Incorporated

7.5 Transition Time

Transition time is defined as the time taken by the output of the device to rise or fall 10% after the select signal

has risen or fallen past the logic threshold. The 10% transition measurement is utilized to provide the timing of

the device. The time constant from the load resistance and load capacitance can be added to the transition time

to calculate system level timing. Figure 31 shows the setup used to measure transition time, denoted by the

symbol tTRANSITION.

Figure 31. Transition-Time Measurement Setup

7.6 tON (EN) and tOFF (EN) Time

The tON (EN) time is defined as the time taken by the output of the device to rise to 90% after the enable has fallen

past the logic threshold. The 90% measurement is used to provide the timing of the device being enabled in the

system. Figure 32 shows the setup used to measure the enable time, denoted by the symbol tON (EN).

The tOFF (EN) time is defined as the time taken by the output of the device to fall to 90% after the enable has fallen

past the logic threshold. The 90% measurement is used to provide the timing of the device being disabled in the

system. Figure 32 shows the setup used to measure enable time, denoted by the symbol tOFF (EN).

Figure 32. tON (EN) and tOFF (EN) Time Measurement Setup