Linear Technology LTM2882-5 RS232 µModule Isolator Demo Board (5.0V Supply) DC1554A-B DC1554A-B Data Sheet
Product codes
DC1554A-B
LTM2882
16
2882fd
Typical applicaTions
Figure 9. Single Line Dual Half-Duplex
Isolated Transceiver
2882 F09
ON
DIN
T1IN
R1OUT
T2IN
R2OUT
DE
DOUT
T1OUT
R1IN
T2OUT
R2IN
LTM2882
3.3V (LTM2882-3)
5V (LTM2882-5)
V
L
V
CC
GND
GND2
3.3k
ISOLA
TION BARRIER
T
X
R
X
3.3k
Figure 13. Isolated Multirail Power Supply
with Switched Outputs
Figure 10. Driving Larger Capacitive Loads
Figure 11. 1.8V Microprocessor Interface
2882 F10
ON
DIN
T1IN
R1OUT
T2IN
R2OUT
DE
DOUT
T1OUT
R1IN
T2OUT
R2IN
LTM2882
3.3V (LTM2882-3)
5V (LTM2882-5)
V
L
V
CC
GND
GND2
ISOLA
TION BARRIER
3k
C
L
DATA RATE
(kbps)
100
5
250
2
1000
0.5
C
L
(nF)
2882 F11
ON
DIN
T1IN
R1OUT
T2IN
R2OUT
DE
DOUT
T1OUT
R1IN
T2OUT
R2IN
LTM2882
µP
V
L
V
CC
GND
1.8V
3.3V (LTM2882-3)
5V (LTM2882-5)
ISOLA
TION BARRIER
GND2
Figure 12. Isolated 5V Power Supply
2882 F12
ON
DIN
T1IN
R1OUT
T2IN
R2OUT
DE
DOUT
T1OUT
R1IN
T2OUT
R2IN
LTM2882
V
L
V
CC
V
CC2
GND
3.3V (LTM2882-3)
5V (LTM2882-5)
5V
REGULATED
150mA (LTM2882-5)
100mA (LTM2882-3)
ISOLA
TION BARRIER
GND2
ON
OFF
2882 F13
ON
DIN
T1IN
R1OUT
T2IN
R2OUT
DE
DOUT
T1OUT
R1IN
T2OUT
R2IN
LTM2882
3.3V (LTM2882-3)
5V (LTM2882-5)
5V
REGULATED
7V
SWITCHED
RETURN
–6.3V
SWITCHED
V
L
V
CC
V
CC2
GND
GND2
ISOLA
TION BARRIER
ON
OFF