Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Interface | RS-485 / RS-422 transceiver |
| Direction | Half duplex |
| Supply | 5 V class operation |
| Data Rate | Up to 2.5 Mbps for MAX485 family member |
| Driver / Receiver | 1 driver / 1 receiver |
| Package | 8-pin narrow SOIC, tape and reel |
| Product Status | Production on current Analog Devices product page |
Product Overview
MAX485ESA+T is the industrial-temperature narrow-SOIC tape-and-reel orderable version of the MAX485 low-power RS-485/RS-422 transceiver family, originally from Maxim Integrated and now supported by Analog Devices. It provides one differential driver and one differential receiver for half-duplex serial links.
Reliable operation depends on the complete bus, not only on the IC. Termination, biasing, cable impedance, common-mode range, stub length and transient environment should all be evaluated for the target network.
Technical Specifications
| Group | Parameter | Value / Condition |
|---|---|---|
| Interface | Standard | RS-485 / RS-422 physical layer |
| Architecture | Duplex mode | Half duplex |
| Channels | Driver / receiver | 1 / 1 |
| Data | Maximum rate | Up to 2.5 Mbps |
| Package | Type | 8-pin narrow SOIC |
| Packing | Format | Tape and reel |
| Lifecycle | Current ADI listing | Production |
Functional Highlights
Half-duplex driver and receiver share one differential pair
Driver-enable and receiver-enable control allows the device to transmit or listen on a two-wire RS-485 network.
Production-listed exact orderable code supports controlled BOMs
Analog Devices currently lists MAX485ESA+T as a production model, which is useful when lifecycle status matters for sourcing and redesign decisions.
Applications / Application Fit
- Industrial multidrop serial links
- Embedded controllers using two-wire RS-485 networks
- Equipment service or redesign requiring the exact MAX485ESA+T orderable code
Design Considerations
Terminate the bus according to cable impedance and network topology rather than placing termination automatically at every node.
Provide defined idle-state biasing where the system protocol requires a known receiver state.
Check surge, ESD and ground-potential requirements separately; a basic transceiver does not by itself replace external protection in harsh installations.
Related Engineering Resources
- Analog Devices MAX485 official product page — current manufacturer-controlled product information, orderable models and datasheet.
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
Request a Quote
To request a quotation, provide the manufacturer part number, required quantity, destination, target Date Code if applicable, and any testing or inspection requirements.
