MAX3486CSA+

Drivers, Receivers, Transceivers Overview

The MAX3486CSA+ is a half-duplex RS-485/RS-422 transceiver operating from a single 3.3V supply (3.0V to 3.6V). It features one driver and one receiver with a guaranteed data rate of 2.5Mbps. The device includes slew-rate-limited drivers to minimize EMI, a 2nA low-current shutdown mode, and fail-safe receiver inputs. It operates within a commercial temperature range of 0°C to +70°C and is housed in an 8-pin SO package.

Drivers, Receivers, Transceivers Feature Summary

• Slew-rate limited driver output reduces electromagnetic interference and reflections on improperly terminated cables.
• Fail-safe receiver guarantees a logic-high output state when both differential inputs are left open.
• Driver outputs feature short-circuit current limiting and thermal shutdown protection against excessive power dissipation.

Drivers, Receivers, Transceivers Applications

• Low-power RS-485 and RS-422 communication networks
• Telecommunications equipment interfaces
• Industrial-control local area networks

Drivers, Receivers, Transceivers Procurement Notes

Verify the component matches the specific 'C' suffix for the 0°C to +70°C commercial temperature range. Confirm the 'SA+' designation corresponds to the 8-pin Small Outline package and RoHS compliance status as defined by Analog Devices. Cross-reference the manufacturer part number with official documentation to ensure authenticity.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring 2.5Mbps transmission speeds where reduced EMI is critical due to its slew-rate limitation. It serves as a direct alternative to the MAX3485 for lower-speed requirements while maintaining compatibility with standard RS-485 bus topologies and 3.3V logic systems.

Drivers, Receivers, Transceivers Part Context

This device belongs to the MAX3483/MAX3485/MAX3486 family of 3.3V-powered transceivers. It shares the industry-standard 75176 pinout with the MAX3483 and MAX3485, facilitating easy integration into existing designs that utilize these legacy interface standards.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX3485CSA+ offers identical packaging and pinout but supports higher speeds up to 10Mbps without slew-rate limiting. The MAX3483CSA+ provides full slew-rate limiting for slower speeds up to 250kbps. Both are compatible alternatives depending on bandwidth requirements.

Drivers, Receivers, Transceivers FAQ

How does the MAX3486CSA+ reduce electromagnetic interference?

It utilizes partially slew-rate-limited drivers, which smooth the signal transitions to minimize high-frequency harmonics and reduce reflections caused by improperly terminated cables.

What happens if the receiver inputs are left open?

The device incorporates a fail-safe feature that guarantees a logic-high output at the RO pin if both the A and B inputs are in an open-circuit state.

How is the low-power shutdown mode activated?

Shutdown is initiated by bringing the Receiver Enable (RE) pin high and the Driver Enable (DE) pin low simultaneously, reducing supply current to typically 2nA.