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Analog Devices MAX3241CAI+ — Logic ICs
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Analog Devices / Logic ICs

MAX3241CAI+ RS-232 Transceiver, 235 kbps, 3/5 Drivers

MPN MAX3241CAI+
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Maxim Integrated MAX3241CAI+, RS-232 transceiver, full duplex, 235 kbps data rate, 3 drivers / 5 receivers, 3V to 5.5V supply, 28-SSOP package, 0°C to 70°C.

In Stock: 418 pcs
MOQ: 1 pcs
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418 in stock — maximum per order · 3–4 days lead time

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100% Original Sealed 45x Microscope QC 30-Day Warranty · COC USD T/T & PI · DAP/DDP
[SPEC] Essential Parameters Snapshot Full Specifications (11)
Package / Case 28-SSOP (0.209", 5.30mm Width)
Supply Voltage 3V ~ 5.5V

Full Technical Specifications

11 Parameters
MAX3241CAI+ specifications
Parameter / AttributeSpecification / Value
TypeTransceiver
MountingSurface Mount
Supply voltage3V ~ 5.5V
ProtocolRS232
Operating temperature0°C ~ 70°C
DuplexFull
PackageTube
Data rate235Kbps
Case28-SSOP (0.209\", 5.30mm Width)
Receiver hysteresis300 mV
Number of drivers (Receivers)3/5
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Technical Details & Description

RS-232 transceiver with 3 drivers, 5 receivers — 235 kbps ceiling

Supply range spans 3V to 5.5V, so it works in both legacy 5V and modern 3.3V logic systems without a separate rail converter.

300 mV receiver hysteresis — noise margin on long cables

The receiver hysteresis is specified at 300 mV, which helps reject noise picked up on longer RS-232 cable runs or in electrically noisy environments like an industrial control cabinet. That hysteresis value is on the higher side for this class, meaning cleaner signal recovery when the cable is routed near motor drives or switching power supplies.

Frequently asked questions

Does MAX3241CAI+ work with 5V logic?

Yes. The supply voltage range is 3V to 5.5V, so it operates directly from a 5V rail. The RS-232 driver outputs swing to the supply level, and the receiver inputs tolerate the same range, making it compatible with 5V UARTs without level translation.

What is the data rate of MAX3241CAI+?

The maximum data rate is 235 kbps. That is sufficient for standard RS-232 applications up to 115.2 kbps with margin, but not for high-speed serial protocols that require 1 Mbps or more.

Does MAX3241CAI+ require external capacitors?

The evidence does not specify charge-pump capacitor requirements. Most Maxim RS-232 transceivers in this family need four external 0.1 µF to 1 µF capacitors for the internal charge pump to generate the ±5.5V driver supply. Verify the exact capacitor values and configuration from the full datasheet before finalizing the BOM.

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