Texas Instruments TMUX646EVM, User Manual

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Table 5-4. TMUX646EVM: Truth Table
EN SEL Channels Selected
1 x Device Disabled
0 0 xP; xN <-> xAP; xAN Connected
xP; xN <-> xBP; xBN Disconnected
0 1 xP; xN <-> xBP; xBN Connected
xP; xN <-> xAP; xAN Disconnected
Please see Table 5-5 for jumper configurations on the SEL and EN pin.
Table 5-5. TMUX646EVM Board Configuration – Control Signals
Jumper ID Test Point ID IC – Pin Shunt Position 1 Shunt Position 2 Board Function
J31 TP31 U1 – /OE 1 2 U1 Enabled
3 2 U1 Disabled
N/A N/A Floating; Attach
External Enable
Source
J33 TP41 U2 – /OE 1 2 U2 Enabled
3 2 U2 Disabled
N/A N/A Floating; Attach
External Enable
Source
J32 TP32 U1 – SEL 1 2 U1 – A Channel
Connected
3 2 U1 – B Channel
Connected
N/A N/A Floating; Attach
External Select
Source
J34 TP42 U2 – SEL 1 2 U2 – A Channel
Connected
3 2 U2 – B Channel
Connected
N/A N/A Floating; Attach
External Select
Source
The TMUX646 has 1.8 V compatible logic thresholds, where digital signal levels are compatible for a 1.8 V
system, independent of supply voltage. Refer to
Table 5-6 below for defined logic levels.
Table 5-6. TMUX646EVM: Logic Levels
Parameter Min Max
Input High Voltage 1.4 V 5.5 V
Input Low Voltage 0 V 0.5 V
5. Next, configure the multiplexer’s channels based on Table 5-7 .
EVM Setup www.ti.com
8 TMUX646EVM User's Guide SCDU025 – MAY 2021
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