5pcs MAX3485 MAX13487 TTL to RS485 Module 485 Converter UA Level Interconversion Hardware Automatic Control Flow Direction

This module features: 1. All chips we guarantee are imported industrial chips of brand new & original, and the transmission of ultra distance can reach up to thousands of meters. 2. ESD protection with positive and negative 15KV 3. The chip has a limited swing rate driver to reduce EMI and signal reflection caused by inappropriate terminal matching cables, thus making the signal transmission rate of zero defect up to 500 kbps. 4, with 1/4 unit load of the receiver input impedance, support multi-machine communication to is not more than 128 devices on the bus. 5, industrial chip operating temperature can reach-40 ℃ to +85 ℃. 6. This module can be hot-swap, and there will be no signal plug-in phenomenon hot-swap other 485 chips. 7. The power supply uses a patch-on-aluminum electrolytic capacitor, and uses double capacitors for high and low frequency power supply filtering. 8. Excellent overvoltage protection performance with dual transient suppression diode 9. Use 10Ω current to protect electronic resistance and patch design to improve signal integrity of 485 10. It has terminals and welding lead holes, which are convenient for debugging and fixing wiring. Welding lead can improve signal reliability. 11. RS485 and TTL signals are all connected on one side to ensure signal quality and improve signal integrity. 12. Spread copper in a large area to prevent signal interference 13. Wire-wrap board welding holes with 2.54 spacing are convenient for your secondary development 14. It has M3 screw holes which are commonly used at present, and is easy and reliable to install 15. With 120Ω termination electronic resistance, short circuit R16 can enable termination electronic resistance 16. With power supply, RXD and TXD signal indicator lights, you can have a panoramic view of the sending and receiving status 17. The Corner Pin leads out, which is convenient for testing 18. Support 3.3V and 5V signalling control, strong compatibility

Material: paper