Logical pinout · physical placement not verified

ROMAX485 pin 1 / module TTL header
Receiver output
Type · UnknownVoltage · 5V logic output
REMAX485 pin 2 / module TTL header
Receiver output enable, active low
Type · UnknownVoltage · 5V logic input
DEMAX485 pin 3 / module TTL header
Driver output enable, active high
Type · UnknownVoltage · 5V logic input
DIMAX485 pin 4 / module TTL header
Driver input
Type · UnknownVoltage · 5V logic input
GNDMAX485 pin 5 / module header
Ground
Type · GroundVoltage · 0V
AMAX485 pin 6 / RS-485 terminal
Non-inverting RS-485 driver output / receiver input
Type · UnknownVoltage · RS-485 differential line
BMAX485 pin 7 / RS-485 terminal
Inverting RS-485 driver output / receiver input
Type · UnknownVoltage · RS-485 differential line
VCCMAX485 pin 8 / module header
Positive supply
Type · PowerVoltage · 4.75V to 5.25V

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

Logical pinout · physical placement not verified

Pin details

8 connections

RO
Receiver output
UnknownVoltage · 5V logic output
MAX485 pin 1 / module TTL header
RE
Receiver output enable, active low
UnknownVoltage · 5V logic input
MAX485 pin 2 / module TTL header
DE
Driver output enable, active high
UnknownVoltage · 5V logic input
MAX485 pin 3 / module TTL header
DI
Driver input
UnknownVoltage · 5V logic input
MAX485 pin 4 / module TTL header
GND
Ground
GroundVoltage · 0V
MAX485 pin 5 / module header
A
Non-inverting RS-485 driver output / receiver input
UnknownVoltage · RS-485 differential line
MAX485 pin 6 / RS-485 terminal
B
Inverting RS-485 driver output / receiver input
UnknownVoltage · RS-485 differential line
MAX485 pin 7 / RS-485 terminal
VCC
Positive supply
PowerVoltage · 4.75V to 5.25V
MAX485 pin 8 / module header

Start wiring

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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