TD301D485H-E Datasheet, PDF (1/3 Pages) MORNSUN Science& Technology Ltd. – SINGLE HIGH SPEED RS485 ISOLATION TRANSCEIVERMODULE

SINGLE HIGH SPEED RS485
ISOLATION TRANSCEIVER
MODULE(ENHANCED VERSION)
——TD301D485H-E(3.3V Power supply)
TD501D485H-E(5.0V Power supply)
FEATURES
l Baud rate high up to500Kbps
l Connect up to 256 nodes on one bus
l 2500VDC isolation input and output
l Integrated high efficiency isolated DC/DC
converter
l Operating temperature range: -40℃~ +85℃
l ESD protection, perfect EMC recommend
circuit
RoHS
PART NUMBER SYSTEM
TD501D485H-E
Special mark
Speed
Port signal type
Package type
Channel number
Power distribution output
Power input
Digital bus product type
GENERAL DESCRIPTION
Single high rate RS485 isolation transceiver module
TD301D485H-E/TD501D485H-E series are RS485
transceiver module with integrated isolated power, Signal
isolated chip and the bus protection device.
Product's main function is to convert logic level to
difference level of the 485 agreement, and it implements the
function of signal isolation.Products is with isolation power. It
can achieve 2500 VDC electrical isolation and have the
function of ESD protection. Product can be easily embedded
user equipment, makes the equipment easily implement
connection of 485 protocol network .
SELECTION GUIDE
Model
TD301D485H-E
TD501D485H-E
Power Input
3.17V~3.45V
4.75V~5.25V
ELECTRICAL CHARACTERISTICS
Input Parameters Of Power ^{Static current}
Supply
Power dissipation
Input Parameters
Serial interface
Pin current
Output Parameters
485 Bus interface
≤40mA
≤0.2W
Compatible with the UART control port of +5V and +3.3V
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 500Kbps
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 256 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
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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