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Analog Devices MAX221ECAE+T — DC-DC Power Modules

MAX221ECAE+T RS232 Transceiver, 250kbps, 16-SSOP

MPNMAX221ECAE+T
End of Life

Maxim Integrated MAX221ECAE+T, RS232 transceiver, full duplex, 1/1 drivers/receivers, 250kbps data rate, 4.5V-5.5V supply, 500mV receiver hysteresis, -40°C to 85°C, 16-SSOP package, surface mount, ROHS3 compliant, active.

$4.63Ref. price · indicative, final on quote
Packaging16-SSOP (0.209", 5.30mm Width)
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX221ECAE+T specifications
ParameterValue
TypeTransceiver
MountingSurface Mount
Voltage4.5V ~ 5.5V
ProtocolRS232
Operating temperature-40°C ~ 85°C
DuplexFull
PackageTape & Reel (TR); Cut Tape (CT)
Data rate250kbps
Case16-SSOP (0.209\", 5.30mm Width)
Receiver hysteresis500 mV
Number of drivers (Receivers)1/1

Product details

Single-channel RS232 transceiver for industrial serial links

Rated for 250kbps data rate with 500mV of receiver hysteresis, it handles industrial serial communication over the -40°C to 85°C temperature range without needing a separate charge-pump capacitor network — the internal charge pump generates the RS232 voltage levels from the single supply.

The 250kbps data rate supports standard RS232 communication. Full-duplex operation means the driver and receiver can run simultaneously — no half-duplex turnaround delay, so the link sustains bidirectional throughput without protocol overhead for direction switching. The 500mV receiver hysteresis filters out noise on longer cable runs, reducing the chance of false start bits on a noisy factory floor.

Supply and temperature: single-rail convenience with industrial margin

Operates from a single supply rail, so it drops into existing 5V logic systems without a separate RS232 supply converter.

ROHS3 compliant, which covers the latest EU exemption updates for lead-free assembly.

Frequently asked questions

Is MAX221ECAE+T a direct replacement for MAX232?

The MAX221ECAE+T is a single-channel (1/1) full-duplex RS232 transceiver in a 16-SSOP package, while the classic MAX232 is a dual-channel (2/2) part in a 16-DIP or SOIC. They are not pin-compatible — the MAX221 is a different footprint and channel count. For a single-port design the MAX221 works, but the board layout and BOM differ.

Where can I find the datasheet for MAX221ECAE+T?

The datasheet for MAX221ECAE+T is available from Maxim Integrated (now part of Analog Devices) and through major distributor portals. The part number is fully searchable online.

What is MAX221ECAE+T's listed type and duplex?

The MAX221ECAE+T is a transceiver with full-duplex capability — one driver and one receiver operating simultaneously.