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MAX485: RS-485 Transceiver — Datasheet & Buying Guide
MAX485 guide: low-power RS-485 transceiver, half-duplex, applications and sourcing.
MAX485 guide: low-power RS-485 transceiver, half-duplex, applications and sourcing.
The MAX485 is a low-power half-duplex RS-485 transceiver. This guide covers its specs, wiring and procurement.
By Vigny (深圳市华芯购电子有限公司) · Published 2026-09-27 · Data verified 2026-09-29 · Sources: manufacturer datasheets & HuaXinGou stock verification
The MAX485 is a half-duplex RS-485 transceiver with 1 driver and 1 receiver, operating up to 2.5Mbps with slew-rate limiting at 250kbps. It runs at 5V and comes in DIP-8/SOIC-8.
RS-485 uses a differential A/B pair with 120-ohm termination at both ends. DE/RE pins control direction; tie RE low and toggle DE for transmit.
Used in industrial field buses, building automation, HVAC controllers, solar inverters and multi-drop sensor networks up to 1200m.
Alternatives include MAX3485 (3.3V), SP485, and SN65HVD72. Specify supply voltage when ordering. HuaXinGou verifies original Maxim/Analog Devices stock.
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