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Analog Devices MAX3491ESD+ — Analog & Data Acquisition

MAX3491ESD+ RS-485/RS-422 Transceiver, 10 Mbps, 14-SOIC

MPNMAX3491ESD+
End of Life

Maxim Integrated MAX3491ESD+, RS-422/RS-485 Transceiver, Full Duplex, 1/1 Drivers/Receivers, 10 Mbps, 3V–3.6V, -40°C to 85°C, 14-SOIC.

$6.61Ref. price · indicative, final on quote
Analog Devices MAX3491ESD+ datasheet (PDF)
Packaging14-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX3491ESD+ specifications
ParameterValue
TypeTransceiver
MountingSurface Mount
Supply voltage3V ~ 3.6V
ProtocolRS422, RS485
Operating temperature-40°C ~ 85°C
DuplexFull
PackageTube
Data rate10Mbps
Case14-SOIC (0.154\", 3.90mm Width)
Receiver hysteresis50 mV
Number of drivers (Receivers)1/1

Product details

It operates from a 3 V to 3.6 V supply and delivers a 10 Mbps data rate, making it a fit for high-speed industrial communication links such as PLC-to-sensor networks, motor drive interfaces, and building automation backplanes where the bus runs at 3.3 V logic levels.

At 10 Mbps the MAX3491ESD+ supports the faster edge rates needed for Profibus and similar industrial protocols running over RS-485. The full-duplex capability means separate transmit and receive pairs, so the bus can sustain continuous back-to-back data flow without turnaround dead time — useful for encoder feedback or real-time control loops.

Rated for 3 V to 3.6 V, this part is designed for a regulated 3.3 V rail.

Frequently asked questions

What is the closest pin-compatible alternative to MAX3491ESD+?

Within the same Maxim family, the MAX3491EESD+ is a direct functional equivalent with identical pinout and package, differing only in the extended temperature range (-40°C to 125°C). For a standard industrial temperature BOM, the MAX3491ESD+ is the cost-optimised choice.