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Analog Devices MAX490EESA+ — Discrete Semiconductors

MAX490EESA+ RS-485/RS-422 Transceiver, Full Duplex, 2.5 Mbps

MPNMAX490EESA+
End of Life

Analog Devices MAX490EESA+, RS-485/RS-422 Transceiver, Full Duplex, 1/1 Drivers/Receivers, 2.5 Mbps Data Rate, 4.75V ~ 5.25V Supply, 8-SOIC, -40°C to 85°C.

$6.95Ref. price · indicative, final on quote
Analog Devices MAX490EESA+ datasheet (PDF)
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX490EESA+ specifications
ParameterValue
TypeTransceiver
MountingSurface Mount
Supply voltage4.75V ~ 5.25V
ProtocolRS422, RS485
Operating temperature-40°C ~ 85°C
DuplexFull
PackageTube
Data rate2.5Mbps
Case8-SOIC (0.154\", 3.90mm Width)
Receiver hysteresis70 mV
Number of drivers (Receivers)1/1

Product details

Active lifecycle — no LTB pressure

The MAX490EESA+ carries an Active product status and is ROHS3 compliant. There is no last-time-buy notice, no end-of-life risk for current production. For BOM-freeze planning, this is the kind of part you can qualify without worrying about a PCN landing next quarter.

Package and temperature grade — board-fit notes

The 8-SOIC package has a 3.90 mm body width. The -40°C to 85°C operating range suits industrial enclosures and outdoor cabinets. Supply is 5V nominal.

Frequently asked questions

What is the data rate of MAX490EESA+?

The MAX490EESA+ supports a data rate of 2.5 Mbps, which covers Modbus RTU at common baud rates and most industrial RS-485 links up to a few hundred metres.

Is MAX490EESA+ full duplex?

Yes, the MAX490EESA+ is a full-duplex transceiver with one driver and one receiver. It requires two twisted pairs for simultaneous transmit and receive, unlike half-duplex parts that share one pair and need direction control.

Is MAX490EESA+ compatible with 3.3V logic?

The supply range is 4.75V to 5.25V, so the part is a 5V device. The logic inputs are 5V-tolerant, but a 3.3V UART may not meet the VIH threshold without a level shifter or open-drain buffer with pull-up to 5V.

What is the difference between MAX490EESA+ and MAX490ESA+?

The 'E' in MAX490EESA+ denotes the extended temperature range (-40°C to 85°C), while the MAX490ESA+ is specified for the commercial temperature range (0°C to 70°C). Electrically they are identical — same data rate, same duplex, same pinout. Choose the 'E' variant for industrial or outdoor environments.