3.3V TTL Mutual Conversion RS422 Module Full Duplex 422 to MCU UART Serial Conversion SP/MAX3490
Description:
RS422 and TTL signal conversion module
RS422 and UART level conversion module
RS422 and MCU serial port conversion module
Overvoltage, overcurrent protection
Power, first indicator
Power filter, chip-on-chip capacitor decoupling
Reserved termination resistance enable terminal
Reserve 2.54 pitch wire hole
This module is suitable for 3.3V TTL and RS422 signal conversion. It has overvoltage and overcurrent protection circuits to protect RS422 level signals in real time to ensure the normal operation of the SP3490 chip. This module uses patch components except for the plug pins to ensure better Signal transmission to improve the EMC and other characteristics of the system, so that the module can be used in more harsh environments as much as possible.
Module interface definition:
Module 4P terminal side:
VCC <<>> +3.3V
TXD <<>> The TTL (UART) transmission of this module is connected to the RXD receiving pin of the microcontroller
RXD <<>> The TTL (UART) receiving of this module is connected to the TXD sending pin of the microcontroller
GND <<>> The ground wire of this module (this ground wire must be connected to the ground of the microcontroller system)
Module 5P terminal side:
R+/A <<>> The A pin of this module needs to be connected to the T+/Y pin of other 422 modules
R-/B <<>> The B pin of this module needs to be connected to the T-/Z pin of other 422 modules
T-/Z <<>> The Z pin of this module needs to be connected to the R-/B pin of other 422 modules
T+/Y <<>> The Y pin of this module needs to be connected to the R+/A pin of other 422 modules
GND <<>> The ground wire of this module can be used as the return path of the common mode signal of the signal if some conditions permit. Of course, this wire can not be used if the conditions do not allow it.
Package include:
1 * 3.3V TTL Mutual Conversion RS422 Module
