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Analog Devices MAX3491CSD+ — Analog & Data Acquisition

MAX3491CSD+ RS-485/RS-422 Transceiver, Full Duplex, 10 Mbps

MPNMAX3491CSD+
End of Life

Maxim Integrated MAX3491CSD+ RS-485/RS-422 transceiver, full duplex, 1/1 driver/receiver, 10 Mbps data rate, 3V–3.6V supply, 14-SOIC package, 0°C to 70°C.

$6.21Ref. price · indicative, final on quote
Packaging14-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX3491CSD+ specifications
ParameterValue
TypeTransceiver
MountingSurface Mount
Voltage3V ~ 3.6V
ProtocolRS422, RS485
Operating temperature0°C ~ 70°C
DuplexFull
PackageTube
Data rate10Mbps
Case14-SOIC (0.154\", 3.90mm Width)
Receiver hysteresis50 mV
Number of drivers (Receivers)1/1

Product details

Full duplex means separate transmit and receive pairs, so the bus can send and receive simultaneously. That doubles throughput on a point-to-point link compared to a half-duplex part at the same bit rate.

3.3V supply — voltage-domain planning

The supply range is 3V to 3.6V, which is a strict 3.3V rail. This part is not 5V-tolerant on the supply or the bus pins.

14-SOIC narrow body (3.90 mm width). Surface-mount only. The footprint is standard SOIC-14; no thermal pad required. The tube shipping medium is fine for prototype builds; production volumes typically come on tape-and-reel — confirm the reel option when ordering if you run a pick-and-place line.

ROHS3 compliant. No known PCN for die shrink or package change. This part is safe to specify into new designs without an obsolescence watch.

Frequently asked questions

Is MAX3491CSD+ full duplex?

Yes, full duplex. Separate transmit and receive pairs allow simultaneous send and receive.

What is the data rate of MAX3491CSD+?

10 Mbps. Suitable for high-speed point-to-point or multi-drop RS-485/RS-422 links.

What package does MAX3491CSD+ use?

14-SOIC narrow body (3.90 mm width), surface mount.