TD312P485 Datasheet, PDF (1/3 Pages) MORNSUN Science& Technology Ltd. – DUAL LOW RATE RS485 ISOLATION TRANSCEIVER MODULE

DUAL LOW RATE RS485
ISOLATION TRANSCEIVER MODULE
——TD312P485(3.3V Power supply)
TD512P485(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
TD512P485
Port signal type
Package type
Channel number
Power distrubution output
Power input
Digital bus interface product type
SELECTION GUIDE
Model
TD312P485
TD512P485
GENERAL DESCRIPTION
RS-485 interface power Integrated isolated module
TD312P485/TD512P485 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 two-port network connection
The isolation RS-485 circuits of using a piece of power
isolation module, six light couplings and two 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 Current(no Load)
Power Input Parameters
Send current
Power dissipation
Input Parameters
Serial interface
Pin current
Output Parameters
485 Bus interface
Isolation power output
TD512P485≤35 mA,TD312P485≤45mA
TD512P485≤80 mA,TD312P485≤120mA
≤0.4W
TD512P485Compatible with + 5 V UART Interface
TD312P485 Compatible with + 3.3 V UART Interface
I_TXD≤5mA；I_RXD≤3mA；I_CON≤5mA
Standard interface RS485, pull-up and pull-down resistor, whose value is
4.7K,have been set to A/B line.
Nominal 5V,≤0.15W
TRANSMISSION CHARACTERISTICS
Transmission Rate
Maximum 9600bps
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 CHARACTERISTICS
Galvanic Isolation
Two-port isolation(input and output)
Isolation Voltage
2.5KVDC(Tested for 1minute and leakage current < 5mA, humidity <95%)
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TDx12P485
2013.12.04-A/1 Page 1 of 3