ADLINK MXE-5400 - Manual (Page 32)

PRELIMINARY
20 Introduction
Figure 1-13: Isolated/Differential Digital Input Circuit
Figure 1-14: Isolated Digital Input Sample Application Circuit
IDI_6 7L
D21
T VS
D21
T VS
1
1
2
2
1 1
2
2
4 4
3
3
R6 71 8 .2K_ +- 5% R6 71 8 .2K_ +- 5%
IDI_nH
IDI_nL
DI
GND
8.2 K_+ -5 % 8.2 K_+ -5 %
D20
TVS
D20
TVS
1
1
2
2
1 1
2
2
4 4
3
3
R67 0 8.2 K_+ -5 % R67 0 8.2 K_+ -5 %
D20
TVS
D20
TVS
1
1
2
2
IS1 IS1
1 1
2
2
4 4
3
3
DI
GND
DI
GND
ISO_COM
ISO_COM
Power
Power