MCU TTL to RS485 module 485 serial port UART level switching hardware automatic control flow | Электронные компоненты и

MCU TTL to RS485 module 485 serial port UART level switching hardware automatic control flow | Электронные компоненты и

1. ESD protection with plus or minus 15KV

     2. The chip has a limited slew rate driver to reduce EMI and reduce signal reflection caused by improper terminal matching cables, so that the error-free signal transmission rate is as high as 500Kbps.

   3. Receiver input impedance with 1/4 unit load, supports multi-machine communication, and allows connection to the bus with no more than 128 devices.

  4. The operating temperature of industrial-grade chips can reach -40°C to +85°C.

   5. This module can be hot-swapped, and there will be no signal plugging phenomenon caused by hot-swapping of other 485 chips.

     6. The power supply uses chip tantalum electrolytic capacitors, and double capacitors are used for high and low frequency power supply filtering

     7. Using dual transient suppression diodes, excellent overvoltage protection performance

    8. Use 10Ω current protection resistor, patch design to improve 485 signal integrity

     9. With terminals and welding lead holes, it is convenient to debug and finalize the wiring, and the welding leads can improve the signal reliability

     10. All RS485 and TTL signals are routed on one side to ensure signal quality and improve signal integrity

     11. Spread copper on a large area to prevent signal interference

     12. With 2.54 pitch hole plate welding holes, it is convenient for your secondary development

     13. It has M3 screw holes that are quite commonly used at present, which is convenient and reliable to install

     14. With 120Ω termination resistance, short-circuit R16 to enable termination resistance

    15. With power supply and RXD, TXD signal indicator lights, you can have a panoramic view of the receiving and sending status

    16. Angled pin leads to facilitate testing

     17. Support 3.3V and 5V signal control, strong compatibility

The module is recommended to use 5V power supply (because the 485 signal level range is 2-6V, the long-distance reliability of 3.3V power supply is reduced), and both 3.3V and 5V signal control can be used (Note: The power supply uses 5V, and the signal uses 3.3V support. We have done signal protection, please rest assured)

      If you have strict signal requirements, please use this module. This module has an automatic flow control function of 500Kbps baud rate, and automatically recognizes when the baud rate is lower than 500Kbps without human intervention.

      Even if you don't believe our store's achievements in automatic transmission and reception, you will definitely believe the chip with automatic transmission and reception function developed by the international manufacturer MAXIM.