TTL to RS485 Module, 485 to Serial UART


In Stock
SKU: MYP-JHS-054 Category:

The module is fully considered the 485 mine design and anti-jamming design, in the field of long-distance transmission, it will block the “earthed” side to earth, can play the role of a good anti-jamming and lightning protection, make 485 more secure; you cannot connect with the earth indoor short-distance transmission. Using a typical 2.54 pitch design for simple secondary development.

Having a 120 ohm termination resistor that shorted R0 to enable matching resistor, when long-distance transmission is advised shorting. Support multi-machine communication, providing access to up to 128 machines on the bus. The module is hot-swappable, and hot-swap does not cause the deadbolt phenomena that occur with other 485 chips. A huge region of copper to prevent signal interference.



  • 3.3V perfectly compatible with 5.0V power supply
  • 3.3V and 5.0V signals are perfectly compatible
  • Working temperature range: -40 ℃ to + 85 ℃
  • Transmission distance up to kilometers (with 850 meters of 2 * 1.5 cable to do the test, it is recommended to use in the 800 meters, more than 800 meters, please add repeaters)
  • Semi-hole process design, a thickness of 0.8mm, makes it easy to use as a combo board, it can also be welded terminal use
  • Has RXD, and TXD signal lights to observe the send and receive status
  • Communication method: Half duplex


    • Operating voltage: 5V
    • A low power consumption for the RS-485 communication
    • Slew-rate limited transceiver
    • 5.08mm pitch 2P terminal
    • Convenient RS-485 communication wiring
    • All pins of the chip have been led to can be controlled through the microcontroller
    • Board size: 43 x 15 mm



  • 1 x TTL to RS485 Module, 485 to Serial UART
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