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TMUX1208, TMUX1209

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SCDS389C – AUGUST 2018 – REVISED DECEMBER 2018

Product Folder Links: TMUX1208 TMUX1209

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Copyright © 2018, Texas Instruments Incorporated

Feature Description (continued)

8.3.5 Device Functional Modes

When the EN pin of the TMUX1208 is pulled high, one of the switches is closed based on the state of the

address lines. Similarly, when the EN pin of the TMUX1209 is pulled high, two of the switches are closed based

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

of the state of the address lines.

8.3.6 Truth Tables

Table 1 and Table 2 show the truth tables for the TMUX1208 and TMUX1209, respectively.

(1)

X denotes don't care.

Table 1. TMUX1208 Truth Table

EN

A2

A1

A0

Selected Inputs Connected To Drain (D) Pin

0

X(1)

X(1)

X(1)

All channels are off

1

0

0

0

S1

1

0

0

1

S2

1

0

1

0

S3

1

0

1

1

S4

1

1

0

0

S5

1

1

0

1

S6

1

1

1

0

S7

1

1

1

1

S8

(1)

X denotes don't care.

Table 2. TMUX1209 Truth Table

EN

A1

A0

Selected Input Connected To Drain (DA, DB) Pins

0

X(1)

X(1)

All channels are off

1

0

0

S1A and S1B

1

0

1

S2A and S2B

1

1

0

S3A and S3B

1

1

1

S4A and S4B