MAX485 TTL to RS485 Module
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MAX485-based TTL-to-RS485 converter module operating at 5 V. Converts TTL-level serial signals to RS485 for half-duplex bus communication.
MAX485-based TTL-to-RS485 converter module operating at 5 V. Converts TTL-level serial signals to RS485 for half-duplex bus communication.
Receiver output
Receiver output enable, active low
Driver output enable, active high
Driver input
Ground
Non-inverting RS-485 driver output / receiver input
Inverting RS-485 driver output / receiver input
Positive supply
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| RO | MAX485 pin 1 / module TTL header | Unknown | Receiver output | 5V logic output |
| RE | MAX485 pin 2 / module TTL header | Unknown | Receiver output enable, active low | 5V logic input |
| DE | MAX485 pin 3 / module TTL header | Unknown | Driver output enable, active high | 5V logic input |
| DI | MAX485 pin 4 / module TTL header | Unknown | Driver input | 5V logic input |
| GND | MAX485 pin 5 / module header | Ground | Ground | 0V |
| A | MAX485 pin 6 / RS-485 terminal | Unknown | Non-inverting RS-485 driver output / receiver input | RS-485 differential line |
| B | MAX485 pin 7 / RS-485 terminal | Unknown | Inverting RS-485 driver output / receiver input | RS-485 differential line |
| VCC | MAX485 pin 8 / module header | Power | Positive supply | 4.75V to 5.25V |
Receiver output
Receiver output enable, active low
Driver output enable, active high
Driver input
Ground
Non-inverting RS-485 driver output / receiver input
Inverting RS-485 driver output / receiver input
Positive supply
UART · SPI · 3.3 V · Breakout
Verify supply voltage and logic levels before powering up.
Module pins: GND, VCC. Schematik maps them to your board in the app.
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