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Analog Devices MAX490EPA+ — Analog & Data Acquisition
Analog Devices

MAX490EPA+ RS-485/RS-422 Transceiver, Full Duplex, 2.5 Mbps

MPNMAX490EPA+
End of Life

Maxim Integrated MAX490EPA+, RS-422/RS-485 transceiver, full duplex, 1/1 driver/receiver, 2.5 Mbps, 4.75V–5.25V supply, -40°C to 85°C, 8-PDIP (0.300") through-hole package, tube.

$6.39Ref. price · indicative, final on quote
MAX490EPA+ datasheet
Packaging8-DIP (0.300", 7.62mm)
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

MAX490EPA+ Technical Specifications
ParameterValue
TypeTransceiver
Mounting typeThrough 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

Full duplex means four wires, not two

Unlike the half-duplex part (which shares the same 8-DIP footprint and 5V supply), the MAX490EPA+ supports full-duplex communication using separate transmit and receive pairs. That gives you simultaneous bidirectional data flow — useful for poll-response protocols where the master doesn't want to wait for bus turn-around. The trade-off is wiring: you need four conductors (plus ground) instead of two. If your application is half-duplex multi-drop, the half-duplex part is the simpler fit; if you need continuous two-way streaming over RS-422 or RS-485, this part is the one.

Active lifecycle and compliance

The MAX490EPA+ carries an Active product status and is RoHS3 compliant. It remains a current-production part suitable for new designs and production replenishment through independent distribution.

Frequently asked questions

What is the difference between MAX490EPA+ and MAX485EPA+?

The MAX490EPA+ is a full-duplex transceiver (separate transmit and receive pairs, four wires), while the MAX485EPA+ is half-duplex (shared pair, two wires). Both use the same 8-DIP footprint, 5V supply, and 2.5 Mbps data rate. The MAX490 also supports RS-422 point-to-point links; the MAX485 is limited to RS-485 multi-drop. Choose the MAX490 when you need simultaneous bidirectional communication; choose the MAX485 for simpler two-wire bus topologies.

Is MAX490EPA+ lead-free and RoHS compliant?

Yes, the MAX490EPA+ is RoHS3 compliant (lead-free per EU directive 2015/863). The suffix '+ ' denotes a lead-free, RoHS-compliant part from Maxim Integrated.

What is the maximum data rate of MAX490EPA+?

The MAX490EPA+ is rated for a maximum data rate of 2.5 Mbps. At this speed, reliable communication over twisted-pair cable is typically limited to a few hundred feet; longer runs require lower data rates or active repeaters.

Can MAX490EPA+ be used as a replacement for MAX490CPD?

The MAX490EPA+ and MAX490CPD share the same transceiver function, full-duplex protocol, and 8-DIP package. The 'E' in the order code indicates the industrial temperature range (-40°C to 85°C), while the 'C' variant is commercial temperature (0°C to 70°C). The MAX490EPA+ is a drop-in replacement for the MAX490CPD in terms of pinout and electrical specs, with wider temperature capability.