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Texas Instruments MAX3232ECDE4 — Interface & Transceivers

MAX3232ECDE4 RS-232 Transceiver, 250 kbps, 16-SOIC

MPNMAX3232ECDE4
Obsolete

Texas Instruments MAX3232ECDE4, RS-232 Transceiver, Full Duplex, 2/2 Drivers/Receivers, 250 kbps Data Rate, 3V to 5.5V Supply, 16-SOIC (0.154", 3.90mm Width), 0°C to 70°C Operating Temperature.

$1.7100Ref. price · indicative, final on quote
Texas Instruments MAX3232ECDE4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

MAX3232ECDE4 specifications
ParameterValue
TypeTransceiver
MountingSurface Mount
Supply voltage3V ~ 5.5V
ProtocolRS232
Operating temperature0°C~70°C
DuplexFull
PackageTube
Data rate250kbps
Case16-SOIC (0.154\", 3.90mm Width)
Receiver hysteresis300 mV
Number of drivers (Receivers)2/2

Product details

RS-232 interface in a 16-SOIC footprint

The receiver hysteresis of 300 mV provides noise immunity on the incoming data lines, which matters when the cable runs through an electrically noisy enclosure.

Obsolete — plan for a replacement now

Supply voltage and data rate — what they mean for fit

At 3.3V it still meets the RS-232 output levels per the standard. The 250 kbps data rate is adequate for traditional UART communication up to about 115200 baud with margin; higher-speed protocols like RS-232 at 1 Mbps are outside its capability.

Frequently asked questions

Is MAX3232ECDE4 obsolete and are there alternative parts?

Yes, MAX3232ECDE4 is listed as Obsolete. No direct pin-compatible replacement is listed in the official records, but the MAX3232 family includes many active variants (e.g., MAX3232E, MAX3232C) that share the same 16-SOIC footprint and 2/2 driver/receiver count. Verify the exact supply voltage and temperature grade against your BOM before substituting.

Can I use MAX3232ECDE4 at 3.3V and what is its data rate?

Yes, the MAX3232ECDE4 operates from 3V to 5.5V, so a 3.3V rail is within spec. The data rate is 250 kbps, which covers standard UART speeds up to 115200 baud with margin.