SCM TTL to RS485 Module 485 to Serial Port UART Level Mutual Conversion Hardware Automatic Control Flow DirectionItem NO.: MCU TTL to RS485

MCU TTL to RS485 Module

Module Features:

1. ESD protection with positive and negative 15KV

2. The chip has a swing rate driver to reduce EMI and signal reflection caused by improper terminal matching cables, resulting in an error free signal transmission rate of up to 500Kbps.

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

4. Industrial grade chips can operate at temperatures ranging from -40 ℃ to+85 ℃.

5. This module can be hot swapped without the signal blocking phenomenon that occurs when other 485 chips are hot swapped.

6. The power supply uses SMD tantalum electrolytic capacitors and dual capacitors for high and low frequency power filtering

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

8. Using a 10 Ω current protection resistor and patch design to improve 485 signal integrity

9. Equipped with terminal and welding lead holes for easy debugging and finalization of wiring, welding leads can improve signal reliability

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

11. Large area copper laying to prevent signal interference

12. With 2.54 spacing hole plate welding holes, convenient for your secondary development

13. It has M3 screw holes that are currently quite commonly used, making installation convenient and reliable

14. With a 120 Ω terminating resistor, short circuiting R16 can enable the terminating resistor

15. Equipped with power supply and RXD, TXD signal indicator lights, providing a panoramic view of transmission and reception conditions

16. Corner pin lead out for easy testing

17. Supports 3.3V and 5V signal control with strong compatibility