The MAX485 is a low-power half-duplex RS-485/RS-422 transceiver operating from a single 5 V supply, ideal for industrial multidrop communication up to 2.5 Mbps.
Product Overview
The MAX485 describes the industry-standard low-power transceiver for RS-485 networks. It is slew-rate-limited to reduce EMI and supports up to 32 transceivers on a single bus, with driver and receiver enable controls for half-duplex operation. This makes it the default choice for PLCs, building automation, and industrial communication links.
Newfly supplies verified, RoHS-compliant MAX485-class transceivers with cross-reference and BOM-matching support for production sourcing.
Key Features
- – Single 5 V supply (4.75–5.25 V)
- – Half-duplex RS-485 / RS-422
- – Data rate up to 2.5 Mbps (slew-rate-limited)
- – Up to 32 transceivers on the bus
- – Driver and receiver enable controls
- – Low quiescent current
- – SOIC-8 / DIP-8 packages
- – RoHS-compliant
Technical Specifications
| Parameter | Specification |
|---|---|
| Supply Voltage | 5 V (4.75–5.25 V) |
| Standard | RS-485 / RS-422 (TIA/EIA-485) |
| Mode | Half-duplex |
| Data Rate | Up to 2.5 Mbps |
| Bus Nodes | Up to 32 (unit load; verify with manufacturer datasheet) |
| Operating Temperature | 0°C to +70°C (commercial); -40°C to +85°C (extended, verify variant) |
| Package | DIP-8, SOIC-8 (verify variant) |
| Compliance | RoHS |
Applications
– Industrial communication
– PLC equipment
– Building automation
– Motor drives
– Multi-drop sensor networks
Why Choose Newfly Electronics
– Verified sourcing from ISO9001-certified manufacturers
– MOQ flexibility with small-quantity and prototype sourcing support
– Alternative-part and cross-reference service for standard RS-485 transceivers
– Full-board BOM sourcing to consolidate your component purchasing
– RoHS / REACH documentation support for compliance filing
FAQ
Q: Is the MAX485 half-duplex or full-duplex?
A: The MAX485 is a half-duplex RS-485/RS-422 transceiver using two bus wires shared for transmit and receive, with driver/receiver enable control.
Q: How many nodes can share the bus?
A: Up to 32 unit-load transceivers on a single RS-485 bus; confirm your node’s unit load with the datasheet.
Q: What supply voltage is required?
A: A single 5 V supply (4.75–5.25 V). For 3.3 V RS-485, ask Newfly about compatible alternatives.
