News & Events

MORNSUN release RS485 Transceivers in DIP10 package with 3kV Isolation

MORNSUN recently announced cost-effective, compact size RS485 transceivers TDx21D485x series, to assist fast signal response in industries of power grid, industrial control and instrumentation, etc.

On the TD321D485 / TD521D485, the main function is to convert the logic level to the RS485 protocol differential level, to achieve signal isolation. By use of IC integrated technology allows applications to achieve the power isolation, signal isolation, RS485 communication and bus protection in one RS485 Protocol transceiver module. The product comes with constant pressure isolation power supply, and can achieve 2500VDC electrical isolation. Products can be easily embedded in the user equipment, so that equipment can easily achieve RS485 protocol network connection.

TDx21D485x series are designed with excellent performance, manufacturing process and reliability, as follows:

Excellent Performance

Baud rate of low-speed RS485 transceivers grows from 9.6kbps to 19.2kbps.
Nodes of low-speed and high-speed transceivers are doubled, i.e. 64 nodes. Nodes of auto-switch interface increase by 4 times, i.e. 128 nodes.
All series provide electrical isolation of 3000VDC.
All series output isolated 5V at the terminal of bus, easy for default configuration of the bus.
Designed with advanced technology similar to MORNSUN fixed R3 DC/DC Converters and highly integrated internal device, the series greatly improve in manufacturing process and reliability.

Reliable manufacturing process

TDx21D485x series apply SMT to enhance product automation and reliability.
Simply achieve plug-to-SMD process: Single output TDx21D485x series are in open frame using pin terminals to match corresponding female header, so that customers easily achieve automated processing, maintenance and replacement at the same time.


Integrated power supply, bus isolation and ESD protection in one module
Two-terminal isolation: 3000VDC (input and output are mutually isolated)
Baud rate up to 500Kbps
Connect up to 256 nodes on one bus
Operating temperature range:-40°C to +85°
Compact size, DIP10 package

Ordering Information

Part No. Characteristic Power Supply (VDC) Buad Rate (bps) Max Working Current (mA) Distribution Supply (VDC) Nodes Certification (pending) Datasheet Buy Now
TD321D485 Low-speed economoic 3.3 19.2k 130 5V 64 EN60950 Buy TD321D485 now!
TD521D485 Low-speed economoic 5 19.2K 130 5V 64 EN60950 Buy TD521D485 now!
TD321D485H High-speed 3.3 200K 130 5V 64 EN60950 Buy TD321D485H now!
TD521D485H High-speed 5 200K 130 5V 64 EN60950 Buy TD521D485H now!
TD321D485H-E High-speed enhanced 3.3 500K 130 5V 256 EN60950 Buy TD321D485H-E now!
TD521D485H-E High-speed enhanced 5 500K 130 5V 256 EN60950 Buy TD521D485H-E now!
TD321D485H-A Auto-switch 3.3 500K 90 5V 128 EN60950 Buy TD321D485H-A now!
TD521D485H-A Auto-switch 5 500K 90 5V 128 EN60950 Buy TD521D485H-A now!