9.4 Device Functional Modes

9.4.1 Normal Mode

In Normal Mode operation, signals of up to VDD and VSS can be passed through the switch from source (Sx)

to drain (Dx) or from drain (Dx) to source (Sx). The select (SELx) pins determine which switch path to turn on,

according to the Truth Table. The following conditions must be satisfied for the switch to stay in the ON condition:

• The difference between the primary supplies (VDD – VSS) must be greater than or equal to 10 V. With a

minimum VDD of 10 V.

• The input signals on the source (Sx) or the drain (Dx) must be between VDD and VSS.

• The logic control (SELx) must have selected the switch.

9.4.2 Truth Tables

Table 9-1, Table 9-2, and Table 9-3 show the truth tables for the TMUX8211, TMUX8212, and TMUX8213,

respectively.

Table 9-1. TMUX8211 Truth Table

SEL #(1)

CHANNEL #

0

Channel # ON

1

Channel # OFF

(1)

"#"designates the channel number controlled by SEL pin: "1, 2,

3, or 4"

Table 9-2. TMUX8212 Truth Table

SEL #(1)

CHANNEL #

0

Channel # OFF

1

Channel # ON

(1)

"#"designates the channel number controlled by SEL pin: "1, 2,

3, or 4"

Table 9-3. TMUX8213 Truth Table

SEL1 SEL2 SEL3 SEL4

ON / OFF CHANNELS

0

X(1)

X

X

CHANNEL 1 ON

1

X

X

X

CHANNEL 1 OFF

X

0

X

X

CHANNEL 2 OFF

X

1

X

X

CHANNEL 2 ON

X

X

0

X

CHANNEL 3 OFF

X

X

1

X

CHANNEL 3 ON

X

X

X

0

CHANNEL 4 ON

X

X

X

1

CHANNEL 4 OFF

(1)

"X" means "do not care."

If unused, then the SELx pins must be tied to GND or Logic High so that the devices do not consume additional

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

should be connected to GND for best performance.

www.ti.com

TMUX8211, TMUX8212, TMUX8213

SCDS434B – OCTOBER 2021 – REVISED MARCH 2023

Copyright © 2023 Texas Instruments Incorporated

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Product Folder Links: TMUX8211 TMUX8212 TMUX8213