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Analog Devices MAX3181EUK+T — DC-DC Power Modules

MAX3181EUK+T RS-232 Receiver, 1.5 Mbps, SOT-23-5

MPNMAX3181EUK+T
End of Life

Analog Devices MAX3181EUK+T RS-232 single receiver, 1.5 Mbps data rate, 300 mV hysteresis, 3V to 5.5V supply, SOT-23-5 package, -40 to 85°C, Tape & Reel.

$2.35Ref. price · indicative, final on quote
PackagingSC-74A, SOT-753
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX3181EUK+T specifications
ParameterValue
TypeReceiver
MountingSurface Mount
Voltage3V ~ 5.5V
ProtocolRS232
Operating temperature-40°C ~ 85°C
PackageTape & Reel (TR); Cut Tape (CT)
Data rate1.5Mbps
CaseSC-74A, SOT-753
Receiver hysteresis300 mV
Number of drivers (Receivers)0/1

Product details

1.5 Mbps RS-232 receiver in a SOT-23-5

The MAX3181EUK+T is a single RS-232 receiver from Analog Devices, handling data rates up to 1.5 Mbps with 300 mV of hysteresis on the input. That hysteresis is the key figure for a single-ended bus like RS-232 — it rejects noise on long cable runs where a clean zero-crossing is not guaranteed, so the receiver does not chatter on a slow or noisy edge. With zero drivers and one receiver, this part is a dedicated receive-only line buffer. It takes an RS-232-level signal from a DB-9 or terminal-block connector and presents a logic-level output to the UART on the other side, running from a single 3V to 5.5V supply rail.

Packaged in a SOT-23-5 (SC-74A), the footprint is 2.9 mm × 1.6 mm — about the size of a single bypass capacitor. The small body suits space-constrained designs like a dongle, a protocol converter, or a multi-port serial card where every square mm counts.

Frequently asked questions

What is the data rate of the MAX3181EUK+T?

The MAX3181EUK+T supports data rates up to 1.5 Mbps. At that speed it handles standard RS-232 traffic comfortably — 115.2 kbps is the common ceiling for most legacy UARTs, so 1.5 Mbps leaves margin for higher-speed custom protocols or multi-drop polling where the bus must settle faster.

What is the difference between MAX3181EUK+T and MAX3181EUK?

The 'T' suffix on MAX3181EUK+T indicates Tape & Reel packaging, while the base MAX3181EUK is typically supplied in bulk or cut tape. The electrical specifications — 1.5 Mbps data rate, 300 mV hysteresis, 3V to 5.5V supply, SOT-23-5 package — are identical between the two. The 'T' variant is the one ordered for automated pick-and-place assembly lines.