TD312P485H Datasheet, PDF (1/3 Pages) MORNSUN Science& Technology Ltd. – DUAL HIGH SPEED H-485 ISOLATION TRANSCEIVER

DUAL HIGH SPEED H-485
FEATURES
l Baud rate high up to115200bps
ISOLATION TRANSCEIVER
——TD312P485H(3.3V Power supply)
l Connect up to 32 nodes on one bus
l 2500VDC isolation voltage (input and output)
l Integrated high efficiency isolated DC/DC
TD512P485H(5.0V Power supply)
converter
l Operating temperature range: -40℃~ +85℃
l ESD protection, perfect EMC recommend
circuit
PART NUMBER SYSTEM
TD312 P485H
rate
Port signal type
Package type
Channel number
Power distribution output
Power input
Digital bus product type
SELECTION GUIDE
Model
TD312P485H
TD512P485H
GENERAL DESCRIPTION
RS485 interface power Integrated isolated module
TD312P485H/TD512P485H series are transceiver isolation
module with integrated power isolation, electrical isolation,
and RS-485 interface bus protector. It has two way
independent of RS485 network function.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.
Power Input
3.17V~3.45V
4.75V~5.25V
ELECTRICAL CHARACTERISTICS
Static current
Input Of Power Supply
power dissipation
Send current
Input
Serial interface
Pin current
Output
485 Bus interface
TD312P485H≤50mA ,TD512P485H≤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
Maximum 115200 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
Norm al
Norm al
ISOLATION CHARACTERISTICS
Electrical Isolation
Two-port isolation(input and output)
Isolation Voltage
2.5KVDC(Tested for 1minute and leakage current < 5mA, humidity <95%)
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TDx12P485H
2013.03.19-A/0 Page 1 of 3