Datasheet

LTM2881
20
2881fg
For more information www.linear.com/LTM2881
TYPICAL APPLICATIONS
Figure 21. Switched 5V Power with Isolated CMOS Logic Connection with Low Voltage Interface
Figure 22. 4-Wire Full Duplex Self Biasing for Unshielded CAT5 Connection
2881 F21
A
V
CC2
RO
V
L
TE
RE
DE
DI
D
OUT
GND GND2
V
CC
V
CC
CMOS INPUTCMOS OUTPUT
B
Z
1.8V
D
IN
PWR
ONOFF
REGULATED 5V
SWITCHED 5V
IRLML6402
330k
LTM2881
ISOLATION BARRIER
A
V
L
RE
DE
RO
DI
GND
V
CC
V
CC
B
Y
Z
PWR
GND2
LTM2881
ISOLATION BARRIER
Y
V
L
RE
RO
DE
DI
GND
V
CC
V
CCB
2881 F22
Z
A
B
PWR
GND2
BUS INHERITED
LTM2881
10nF
51Ω
51Ω
51Ω
51Ω
10nF
ISOLATION BARRIER
B
Figure 19. Isolated System Fault Detection
A
V
L
RE
DE
TE
RO
DI
D
OUT
D
IN
GND
FAULT
V
CC
V
CC
B
Y
Z
GND2
330k
2881 F19
LTM2881
ISOLATION BARRIER
Figure 20. Full-Duplex RS485 Connection
A
V
L
RE
DE
TE
RO
DI
GND
V
CC
V
CC
2881 F20
B
Y
Z
PWR
GND2
LTM2881
ISOLATION BARRIER