TD301D485 Datasheet, PDF (1/3 Pages) MORNSUN Science& Technology Ltd. – SINGLE LOW RATE RS485 ISOLATION TRANSCEIVER MODULE

SINGLE LOW RATE RS485
ISOLATION TRANSCEIVER MODULE
——TD301D485（3.3V Power supply）
TD501D485（5.0V Power supply）
FEATURES
l Two-port electrical isolation input and
output
l Integrated isolated DC/DC converter
l Bus protection
l Isolation voltage 2.5KVDC
l Operating temperature range:-40℃~+85℃
l Baud rate 9600bps,
l Connect up to 32 nodes on one bus
l Low electromagnetic radiation
l High electromagnetic immunity
RoHS
PART NUMBER SYSTEM
TD301D485
Port signal type
Package type
Channel number
Power distribution output
Power input
Digital bus product type
SELECTION GUIDE
Model
TD301D485
TD501D485
GENERAL DESCRIPTION
TD301D485/TD501D485 series are transceiver isolation
module with integrated duplex power isolation, electrical
isolation,and RS-485 interface bus protector ; Products can
be easily embedded in the user equipment, achieve function
of RS-485 network connection.
The isolation RS-485 circuits of using a piece of power
isolation module, three light couplings and RS-485
transceivers and device are only need to adopt a RS485
isolation module now. Simplify the customers on the isolation
requirements of the design.
Power Input
3.17V~3.45V
4.75V~5.25V
ELECTRICAL CHARACTERISTICS
Input Parameters Of Power
Supply
Static current
Send current
power dissipation
Input Parameters
Serial interface
Pin current
Output Parameters
485 bus interface
TD501D485≤30 mA,TD301D485≤40mA
TD501D485≤40 mA,TD301D485≤60mA
≤0.2W
TD501D485 compatible with + 5 V UART interface
TD301D485 compatible with + 3.3 V UART interface
I_TXD≤5mA;I_RXD≤3 mA;I_CON≤5mA
Standard interface RS485 ,pull-up and pull-down resistor, whose value is
4.7K,have been set to A/B line.
TRANSMISSION SPECIFICATIONS
Data Rate
Maximum 9600bps bps
Data Delay
The delay time from the receiving data switch to the send data : 30 μs(min), 100 μs(max).
The number of nodes
Connect up to 32 nodes on one bus
Transceiver control
Contrary to common 485 transceiver control level
Control
Input
Output
Sending Status
CON
0
TXD
1
A
B
1
0
Truth Table
0
Control
0
Input
0
1
Output
Receiving Status
CON
1
A-B
0.2V
RXD
1
1
-0.2V
0
Line state
Normal
Normal
ISOLATION SPECIFICATIONS
Electrical Isolation
Two-port isolation (input and output)
Isolation Voltage
2.5KVDC(Tested for 1 minute and leakage current < 5mA,humidity < 95%)
The copyright and authority for the interpretation of the products are reserved by MORNSUN
TDx01D485 2013.12.04-A/1 Page 1 of 3