TD31IP485H Datasheet, PDF (1/3 Pages) MORNSUN Science& Technology Ltd. – DUAL ISOLATION HIGH SPEED H-485 TRANSCEIVER

DUAL ISOLATION HIGH SPEED
H-485 TRANSCEIVER
——TD31IP485H(3.3V Power supply)
TD51IP485H(5.0V Power supply)
FEATURES
l Baud rate high up to115200bps
l Connect up to 32 nodes on one bus
l 2500VDC isolation voltage (input and output)
l 2500VDC isolation voltage (output and output)
l Integrated high efficiency isolated DC/DC
converter
l Operating temperature range: -40℃~ +85℃
l ESD protection, perfect EMC recommend
circuit
PART NUMBER SYSTEM
TD31I P485H
rate
Port signal type
Package type
Channel number
Power distribution output
Power input
Digital bus product type
GENERAL DESCRIPTION
Dual double isolation high speed h-485 isolated transceiver
module TD31IP485H/TD51IP485H series are transceiver
isolation module with integrated twin power isolation, electrical
isolation, and RS-485 interface bus protector . It has two way
independent of RS485 network function,and the two-port RS485
networks are isolated.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, six road light coupling and 2 RS - 485
transceivers and device is only need to adopt a RS485 isolation
module now.Simplify the customers on the isolation
requirements of the design.
SELECTION GUIDE
Model
TD31IP485H
TD51IP485H
Power Input
3.17V~3.45V
4.75V~5.25V
ELECTRICAL CHARACTERISTICS
Static current
Input Of Power Supply
power dissipation（max）
Send current
Input
Serial interface
Pin current
Output
485 Bus interface
TD31IP485H≤50mA ,TD51IP485H≤30mA
≤0.4W
TD31IP485H≤121mA ,TD51IP485H≤80mA
Compatible with + 5 V and + 3.3 V UART Interface
I_TXD<2mA ;I_RXD<2mA ;I_CON<5mA
Standard interface RS485, pull-up and pull-down resistor,
whose value is 4.7KΩ,have been set to A/B line.
TRANSMISSION CHARACTERISTICS
Transmission Rate
115200 bps（max）
Data Delay
The Number of Nodes
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
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
Norm al
Norm al
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TDx1IP485H
2013.03.19-A/0 Page 1 of 3