ADLINK Technology MXE-5401 - D-SUB 26 P Digital I;O Pin Assignment; Isolated Digital Input Circuit Diagram

20 Introduction
Figure 1-13: Isolated/Differential Digital Input Circuit
Figure 1-14: Isolated Digital Input Sample Application Circuit
IDI_67L
D21
TVS
D21
TVS
1
1
2
2
1 1
2
2
4
4
3
3
R671 8.2K_+-5%R671 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
IS 1IS 1
1 1
2
2
4
4
3
3
DI
GND
DI
GND
ISO_COM
ISO_COM
Power
Power