±9

±6

±3

0

3

6

9

±15

±10

±5

0

5

10

15

Drain voltage (V)

C011

V

V

V

V

V

V

±2

±1

0

1

2

±15

±10

±5

0

5

10

15

Source Voltage (V)

C025

V

V

V

V

V

V

24

MUX508, MUX509

SBAS758A – JANUARY 2016 – REVISED MARCH 2016

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Product Folder Links: MUX508 MUX509

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Copyright © 2016, Texas Instruments Incorporated

Feature Description (continued)

Figure 39. Source-to-Drain Charge Injection vs Source or Drain voltage

The drain-to-source charge injection becomes important when the device is used as a demultiplexer (demux),

where D becomes the input and Sx becomes the output. Figure 40 shows the drain-to-source charge injection

across the full signal range.

Figure 40. Drain-to-Source Charge Injection vs Source or Drain voltage

9.3.3 Bidirectional Operation

The MUX50x are operable as both a mux or demux. The source (Sx, SxA, SxB) and drain (D, DA, DB) pins of

the MUX50x are used either as input or output. Each MUX50x channel has very similar characteristics in both

directions.