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Analog Devices MAX490EEPA+ — Sensors & Transducers

MAX490EEPA+ RS-485/RS-422 Transceiver, 2.5 Mbps, Full Duplex

MPNMAX490EEPA+
End of Life

Analog Devices MAX490EEPA+, RS-422/RS-485 full-duplex transceiver, 1 driver / 1 receiver, 2.5 Mbps data rate, 4.75 V to 5.25 V supply, -40°C to 85°C, 8-pin DIP (0.300", 7.62 mm), tube.

$9.12Ref. price · indicative, final on quote
Analog Devices MAX490EEPA+ datasheet (PDF)
Packaging8-DIP (0.300", 7.62mm)
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX490EEPA+ specifications
ParameterValue
TypeTransceiver
MountingThrough Hole
Voltage4.75V ~ 5.25V
ProtocolRS422, RS485
Operating temperature-40°C ~ 85°C
DuplexFull
PackageTube
Data rate2.5Mbps
Case8-DIP (0.300\", 7.62mm)
Receiver hysteresis70 mV
Number of drivers (Receivers)1/1

Product details

Field-swap fit: 2.5 Mbps on a DIP

The MAX490EEPA+ is a full-duplex RS-422/RS-485 transceiver from Analog Devices, pushing 2.5 Mbps on a single 5 V rail. That data rate is enough for most Modbus RTU and Profibus DP fieldbuses at reasonable cable lengths — you are not speed-limited unless the bus runs past a few hundred metres at full rate. Full-duplex operation means separate pairs for transmit and receive, so the protocol layer does not waste time turning the bus around. The 70 mV receiver hysteresis cleans up noise on long drops without external filtering.

The 8-pin DIP (0.300" width) is socket-friendly — you can swap it on site with a basic extraction tool and no hot-air station. Supply tolerance is 4.75 V to 5.25 V, which covers a 5 V rail with typical regulation margins. The 1/1 driver/receiver count suits point-to-point or multi-drop with one talker at a time.

Active production, ROHS3, through-hole sourcing

Lifecycle status is Active and the part is ROHS3 compliant. No stock-holding claim — we quote per RFQ.

Frequently asked questions

Is MAX490EEPA+ a direct replacement for MAX490CPA?

The MAX490CPA is the commercial-temperature (0°C to 70°C) version of the same die in the same 8-pin DIP package. The MAX490EEPA+ extends the operating range to -40°C to 85°C and is ROHS3 compliant. Electrically they are identical — same data rate, same supply, same pinout. You can drop the E suffix part into a socket originally populated with the CPA variant and get wider temperature margin.

Can MAX490EEPA+ replace MAX488CPA?

The MAX488 is a half-duplex RS-485 transceiver; the MAX490EEPA+ is full duplex. Pinout differs — the MAX488 uses a single differential pair for both directions, while the MAX490 has separate TX and RX pairs. They are not pin-compatible. If the board layout expects a half-duplex part, the MAX490 will not fit without rewiring.