MAX485 Module RS-485 TTL

Reliable RS-485 Conversion with the MAX485 TTL Module

The MAX485 Module provides a compact, battery‑friendly interface that translates standard TTL UART signals (3.3 V or 5 V) into RS‑485 differential signals. Designed around Texas Instruments’ MAX485 transceiver, the module offers high‑speed (up to 10 Mbps) half‑duplex communication over long distances (up to 1 km on Cat. 5e/UHF cables) while maintaining a low pin‑count footprint for embedded designers.

Key features include precise differential drive, integrated 4.75 kΩ termination resistors (configurable), and a low‑power sleep mode when idle. The user‑selectable driver bias and line‑state detection functions simplify network level management and enhance noise immunity, making the module ideal for industrial automation, SCADA, and IoT gateway applications.

• Max Output Current: ±5 mA (typ.)
• Transceiver Voltage: 2.4 V – 5.5 V (suitable for 3.3 V or 5 V logic)
• Driving Mode: Half‑duplex differential with configurable termination and bias resistors
• Common Use Case: Long‑reach industrial fieldbus links, PLC‑to‑sensor networks, and remote telemetry systems