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Analog Devices MAX490CUA+ — Sensors & Transducers
Analog Devices

MAX490CUA+ RS-422/RS-485 Full-Duplex Transceiver 2.5 Mbps

MPNMAX490CUA+
End of Life

Analog Devices MAX490CUA+, RS-422/RS-485 full-duplex transceiver, 1 driver / 1 receiver, 2.5 Mbps data rate, 4.75-5.25 V supply, 0°C to 70°C, 8-uMAX/uSOP surface-mount package.

$4.16Ref. price · indicative, final on quote
MAX490CUA+ datasheet
Packaging8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

MAX490CUA+ Technical Specifications
ParameterValue
TypeTransceiver
Mounting typeSurface Mount
Voltage4.75V ~ 5.25V
ProtocolRS422, RS485
Operating temperature0°C ~ 70°C
DuplexFull
PackageTube
Data rate2.5Mbps
Case8-TSSOP, 8-MSOP (0.118\", 3.00mm Width)
Receiver hysteresis70 mV
Number of drivers (Receivers)1/1

Product details

RS-485 full-duplex transceiver for point-to-point links

It runs on a 4.75 V to 5.25 V supply and pushes data at 2.5 Mbps — enough for industrial fieldbus links, PLC-to-drive communication, or building-automation backbone runs.

Full-duplex wiring and receiver hysteresis

Full-duplex operation means you need a dedicated twisted pair for transmit and another for receive — four wires total, plus ground. The 70 mV receiver hysteresis gives noise immunity on the bus; in a noisy industrial environment that margin helps the receiver stay clean through cable-coupled interference.

Package and rework considerations

Housed in an 8-uMAX/uSOP (0.118-inch body width, 3.00 mm), the MAX490CUA+ has a 0.65 mm pin pitch. The small thermal mass means it reflows quickly; a 260 °C peak profile with a 30-second above-liquidus window is safe. No exposed pad, so the hot-air station lifts the part cleanly without pad damage.

Frequently asked questions

Is MAX490CUA+ compatible with MAX483 or other RS-485 transceivers?

The MAX490CUA+ is a full-duplex device, while the MAX483 is half-duplex. They share the same RS-485 electrical interface, so they can coexist on the same bus if you manage the driver-enable logic externally. For a direct full-duplex replacement, look at other MAX490 variants in the same family — the pinout and supply range are consistent.

Can MAX490CUA+ be used in half-duplex mode?

No — the MAX490CUA+ is a dedicated full-duplex transceiver. It lacks a driver-enable pin, so the driver is always active. For half-duplex operation you need a part like the MAX483 or MAX485 that includes a driver-enable input.