TD301D485_15 Datasheet, PDF (1/4 Pages) MORNSUN Science& Technology Ltd. – Isolation transceiver module

Industrial Bus
TDx01D485 Series
single RS485 isolation transceiver module
FEATURES
 Two-terminal isolation ( input and output are
mutually isolated)
 Integrated Isolated DC/DC converter
 Bus protection
 Isolation voltage :2.5KVDC
 Operating temperature range:-40℃~+85℃
 Baud rate 9600bps
 Connect up to 32 nodes on one bus
TD301D485/TD501D485 series are transceiver isolation module with integrated duplex power isolation, electrical isolation, and RS485
interface bus protector ; Products can be easily embedded in the user equipment, achieve function of RS485 network connection.
The isolation RS485 circuits of using a piece of power isolation module, three light couplings and RS485 transceivers and device are only
need to adopt a RS485 isolation module now. Simplify the customers on the isolation requirements of the design.
Selection Guide
Part No.
TD301D485
TD501D485
Power Supply input (VDC)
3.17~3.45
4.75~5.25
Input Specifications
Item
Input Power ^{Static current}
Supply
Send current
Input
Serial interface
Pin current
Operating Conditions
Products energized, no communication
9600bps Square wave communication
Value
TD501D485≤30 mA,TD301D485≤40mA
TD501D485≤40 mA,TD301D485≤60mA
TD301D485 compatible with + 3.3 V UART interface
TD501D485 compatible with + 5 V UART interface
ITXD≤5mA;IRXD≤3 mA;ICON≤5mA
Bus Interface
Item
Operating Conditions
Output
RS485 bus interface
Value
Standard interface RS485 ,pull-up and pull-down resistor, whose
value is 4.7K,have been set to A/B line.
Transmission Specifications
Item
Operating Conditions
Data Rate
Transceiver Switching Delay
The Number of Nodes
Transceiver Control
Sending Status
Truth Table
Receiving Status
Value
9600bps (max.)
The delay time from the receiving data switch to the send
data : 30 μs(min.), 100 μs(max.).
Connect up to 32 nodes on one bus
Contrary to common RS485 transceiver control level
Control
Input
Output
CON
TXD
A
B
Line state
0
1
1
0
Normal
0
0
0
1
Normal
Control
Input
Output
CON
A-B
RXD
1
≥0.2V
1
1
≤-0.2V
0
2015.09.16-A/3
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