OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

NM485D6S5MC-R7

P1-P3P4-P6P7-P9P10-P11
NM485D6S5MC
Isolated RS485 Driver DC/DC
KDC_NM485D6S5MC.A01 age 7 of 11
www.murata-ps.com/support
APPLICATION NOTES (continued)
Typical applications
RxD
RE
DE
TxD
D
R
A
B
Z
Y
RxD
RE
DE
TxD
D
R
A
B
Z
Y
R
T
R
T
R
D
RxD RE
DE TxD
RxD
RE
DE TxD
R
D
AB
Z
Y
AB
Z
Y
Isolated
Power
supply
+5V
+6V
-6V
NM485
Isolated
Power
supply
+5V
+6V
-6V
NM485
+5V
+6V
-6V
NM485
Isolated
Power
supply
+5V
+6V
-6V
NM485
0V
5Vin
0V
5Vin
0V
0V
5Vin
0V
0V
Isolated
Power
supply
5Vin
0V
0V
RxD
RE
DE
TxD
D
R
A
B
Z
Y
RxD
RE
DE
TxD D
R
A
B
Z
Y
R
T
A
B
Z
Y
A
B
Z
Y
R
D
R
D
RxD
RE
DE TxD RxD
RE
DE TxD
R
T
Isolated
Power
supply
+5V
+6V
-6V
NM485
+5V
+6V
-6V
NM485
+5V
+6V
-6V
NM485
Isolated
Power
supply
+5V
+6V
-6V
NM485
Isolated
Power
supply
5Vin
0V
0V
0V
5Vin
0V
Isolated
Power
supply
5Vin
0V
5Vin
0V
0V
0V
Figure 11 and Figure 12 show typical applications of half-duplex and full-duplex RS-485 network configurations. Up to 256 transceivers can be connected to the RS-485
bus. To minimize reflections, the line must be terminated at the receiving end in its characterstic impedance and stub lengths off the main line must be kept as short as
possible. For half-duplex operation, this means that both ends of the line must be terminated as either end can be the receiving end. The NM485D6S5MC series offers a
tripple supply (+5V, +6V, -6V) which can be used to power system circuitry.
Figure 11. Typical Half-Duplex RS-485 Network
Figure 12. Typical Full-Duplex RS-485 Network
NM485D6S5MC
Isolated RS485 Driver DC/DC
KDC_NM485D6S5MC.A01 age 8 of 11
www.murata-ps.com/support
DERATING GRAPHS
NM485D6S5MC
Figure 11. Typical Full-Duplex RS-485 Network
EFFICIENCY VS LOAD GRAPH
NM485D6S5MC
TOLERANCE ENVELOPE
The voltage tolerance envelope show typical load regulation characteristics for the NM485D6S5MC. The tolerance envelope is the maximum output voltage variation due to changes in output loading and set
point accuracy.
NM485D6S5MC
0
10
20
30
40
50
60
70
0 102030405060708090100
Efficiency (%)
Load (%)
0
10
20
30
40
50
60
70
80
90
100
25 35 45 55 65 75 85
Load (%)
Temperature (
°C)
Still Air
2%
9%
Output Load Current (%)
Output Voltage
-3%
6%
100
75
50
25
10
NM485D6S5MC
Isolated RS485 Driver DC/DC
KDC_NM485D6S5MC.A01 age 9 of 11
www.murata-ps.com/support
EMC FILTERING AND SPECTRA
FILTERING
The following filter circuit and table shows the input capacitor and input inductor typically required to meet EN55022 Curve A and B, Quasi-Peak EMC limit, as shown in
the following plot. The following plot shows positive and negative quasi peak and CISPR22 Average Limit A (pink line) and CISPR22 Average Limit B (blue line) adherance
limits.
Inductor Capacitor
Part Number L1 Murata Part Number C1
NM485D6S5MC 22µH 23220C 2.2µF
NM485D6S5MC
C1
L1
485
ISOLATOR
0
10
20
30
40
50
60
70
80
1.00E+05 1.00E+06 1.00E+07 1.00E+08
dBuV
Frequency (Hz)
C1 63V Polycarbonate capacitor
P1-P3P4-P6P7-P9P10-P11

NM485D6S5MC-R7

Mfr. #:
Buy NM485D6S5MC-R7
Manufacturer:
Description:
DIGITAL ISOLATOR 3KV RS485
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet