Převodník RS-485 na TTL (MAX485) 

Modul slouží k převodu z TTL na RS-485
Čip - MAX485 s nízkou spotřebou energie
Na desce jsou všechny piny čipu vyvedeny a lze je ovládat přes mikrokontrolér

Velká plocha mědi, aby se zabránilo rušení. 
Modul je upraven proti problémům s interferencemi při větších vzdálenostech a podobně


Provozní napětí: 5V
Rozměry desky: 44mm x 14mm


Datasheet pro MAX485 a příklad programu.

Podrobný popis v originále:

(1) Compatible with 3.3V and 5.0V power supply.
(2) Compatible with 3.3V and 5.0V signal.
(3) Absolute using imported chips; industrial design; anti-interference ability; while using more effective 485 lightning protection design can be used in the industrial
field and harsh field environments; the working temperature of -40 ℃ to + 85 ℃ ;transmission distance up to 1 kilometer (made with 850 meters of cable F1.5 tests
recommended using in the 800 meters,when more than 800m please add repeaters).
(4) Semi-hole process design, thickness 0.8mm, can easily use as a picture board, it can also be welded terminal use.
(5) Has RXD, TXD signal indicator lights, monitor send and receive status.
Features:
(1) The module is fully considered lightning protection design,when long-distance transmission in the wild, the module "Connected to the ground" terminal is connected to the ground, can play a very good jamming and anti-lightning effect,so more secure; it can not connect with the ground when the indoor short-distance transmission.
(2) Using the standard 2.54 pitch design, easy to secondary development.
(3) Has a 120 ohm termination resistors, shorted R0 to enable the matching resistor.
(4) Support multi-machine communication, allowing access at up to 128 devices on the bus
(5) The module can be hot swapped, the signal does not appear dead phenomenon.
(6) A large area of copper to prevent signal interference.