TTL TO RS485 POWER SUPPLY CONVERTER BOARD 3.3V 5V HARDWARE AUTO CONTROL MODULE

SPECIFICATION:

• This module fully considers the 485 bus lightning protection design and anti-interference design.
• It has extremely high EMC (electromagnetic compatibility) and EMI (electromagnetic anti-interference) performance.
• When long-distance transmission in the field, the module is connected to the earth Access to the earth can play a good role in anti-interference and lightning protection, making the 485 bus more secure; the indoor short-distance transmission can not be connected to the earth.
• With standard 2.54 pitch pin headers for your secondary development
• With 120 ohm matching resistance, short-circuit R0 to enable matching resistance, short-circuit is recommended for long-distance transmission.
• Support multi-machine communication, at least 40 nodes can be connected to the same network
• It can be hot-swapped and there will be no signal thrombosis
• Anti-interference wiring and copper laying method to prevent signal interference.

DESCRIPTION:  A TTL to RS485 power supply converter board is a hardware module used to convert signals between TTL (Transistor-Transistor Logic) and RS485 (Recommended Standard 485). The TTL interface typically operates at 3.3V or 5V logic levels, while RS485 is a differential signal standard commonly used for long-distance communication.

The converter board serves as an interface between devices or systems using TTL logic levels and those using RS485 communication. It allows TTL-level signals to be converted into RS485-compatible signals, enabling communication over longer distances and providing noise immunity.

The power supply converter board often includes automatic control circuitry, which allows it to switch between 3.3V and 5V TTL logic levels based on the input voltage supplied to the module. This feature ensures compatibility with different systems or devices operating at different voltage levels.