8.3.6 Device Functional Modes

When the EN pin of the TMUX1308 is pulled low, one of the switches is closed based on the state of the address

lines. Similarly, when the EN pin of the TMUX1309 is pulled low, two of the switches are closed based on the

state of the address lines. When the EN pin is pulled high, all the switches are in an open state regardless of the

state of the address lines.

current as highlighted in Implications of Slow or Floating CMOS Inputs. Unused signal path inputs (Sx and Dx)

should be connected to GND.

8.3.7 Truth Tables

Table 8-1 and Table 8-2 show the truth tables for the TMUX1308 and TMUX1309 respectively.

Table 8-1. TMUX1308 Truth Table

EN A2

A1

A0

Selected Signal Path Connected To Drain

(D) Pin

0

0

0

0

S0

0

0

0

1

S1

0

0

1

0

S2

0

0

1

1

S3

0

1

0

0

S4

0

1

0

1

S5

0

1

1

0

S6

0

1

1

1

S7

1

X(1) X(1) X(1)

All channels are off

(1)

X denotes don't care.

Table 8-2. TMUX1309 Truth Table

EN A1

A0

Selected Signal Path Connected To Drain (DA

and DB) Pins

0

0

0

S0A to DA

S0B to DB

0

0

1

S1A to DA

S1B to DB

0

1

0

S2A to DA

S2B to DB

0

1

1

S3A to DA

S3B to DB

1

X(1) X(1)

All channels are off

(1)

X denotes don't care.

TMUX1308, TMUX1309

SCDS426C – MARCH 2020 – REVISED AUGUST 2020

www.ti.com

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