If the default conditions on the
board is not what you desired please refer to the following table to set up the
Auxiliary pathways which can be either VFP, VFN, SEL, DR, or NC depending on
device installed.
Jumper on
Pathway
Possible
Signal
Pull Up Resistor
Pad ID
Load Resistor
Pad ID
Load Capacitor
Pad ID
Additional
Capacitor Pad ID
J7
VFN /
SEL
R4
R17
C17
C10
J5
VFN /
SEL
N/A
N/A
N/A
N/A
J8
VFP /
SEL
R6
R18
C18
C9
J6
VFP /
SEL
N/A
N/A
N/A
N/A
J9
DR / SEL
R7
R19
C19
N/A
J10
NC / SEL
R8
R20
C20
N/A
If VFP and VFN are used in the
application, attach a shunt on J5 and J6 to the appropriate VFP/VFN source.
Next, use the following table to
set up the desired configuration of the analog channels:
Jumper on
Pathway
Pull Down
Resistor Pad ID
Pull Up Resistor
Pad ID
Load Resistor
Pad ID
Load Capacitor
Pad ID
TVS Diode Pad
ID
J11
R33
R21
R34
C21
D6
J12
R35
R22
R36
C22
D7
J13
R37
R23
R38
C23
D8
J14
R39
R24
R40
C24
D9
J15
R53
R41
R54
C25
D10
J16
R55
R42
R56
C26
D11
J17
R57
R43
R58
C27
D12
J18
R59
R44
R60
C28
D13
Next, solder down the chosen
TMUX74xx in either a PW or QFN package that is to be tested.
If using dual supplies, connect
shunt from VSS to PAD on J19.
If using single supplies, connect
shunt from VSS to GND on J4.
Next, power the board through J2.
Follow the specific device data sheet as to what range the voltage should be set
to.
If VFP/VFN pins are used in the
application and are using an external source power this through J3.
If the fault flag voltage (VFF)
is used in the application, connect and power up this source through J1.