RS485/USB-A Serial Converter Module
10.00 $
The RS485/USB-A Serial Converter Module is an industrial-grade USB-to-RS485 interface designed to provide reliable serial communication between a host computer and RS485-compatible devices. Built around the CH340B USB-to-UART bridge and MAX487 RS485 transceiver, the module offers a compact and reliable solution for industrial automation, embedded systems, instrumentation, and other industrial communication applications.
Designed for dependable operation in demanding environments, the module incorporates industrial-grade protection circuitry and an optimized PCB layout to improve reliability and noise immunity. A USB Type-A connector enables convenient plug-and-play operation, while onboard Power, TX, and RX LEDs provide communication status indication. Field connections are made through a four-position screw terminal exposing 5 V, GND, RS485 A, and RS485 B signals.
The module is supplied in a semi-transparent protective enclosure that enhances mechanical durability while allowing easy visual inspection of the PCB and status indicators.
Features:
- CH340B USB-to-UART Bridge.
- MAX487 Half-Duplex RS485 Transceiver:
Compliant with TIA/EIA-485 Standard.
Maximum Data Rate: 250 kbps.
Multi-Drop Bus network topology.
Supports up to 128 nodes.
- USB Type-A Male Connector:
USB Powered (5V).
UART Baud Rate up to 2 Mbps (Limited to 250 Kbps by MAX487).
- On-board 120 Ω bus termination resistor.
- Supports Windows 7, 8, 10, and 11 (32-bit & 64-bit).
- Industrial Protection Circuitry.
Resettable PTC Fuse.
Ferrite Bead for EMI/ESD Suppression.
Reverse-Polarity Protection.
- Optimized PCB Grounding for Improved Noise Immunity.
- Isolated USB Shield Ground Connection.
- Onboard Status LEDs:
GREEN: Power Indicator.
YELLOW: TX and RX Activity Indicator.
- Four-Pin Screw Terminal (5V, 0V, A, B).
- Compact, Plug-and-Play Design.
- Dimensions: 56 X 26mm.
