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Texas Instruments MAX232D — Interface & Transceivers

MAX232D RS-232 Transceiver, 120 kbps, 16-SOIC

MPNMAX232D
Active

Texas Instruments MAX232D RS-232 transceiver, full duplex, 2/2 drivers/receivers, 120 kbps data rate, 4.5V to 5.5V supply, 16-SOIC, 0°C to 70°C.

$1.6500Ref. price · indicative, final on quote
Texas Instruments MAX232D datasheet (PDF)
Packaging16-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX232D specifications
ParameterValue
TypeTransceiver
MountingSurface Mount
Supply voltage4.5V ~ 5.5V
ProtocolRS232
Operating temperature0°C~70°C
DuplexFull
PackageTube
Data rate120Kbps
Case16-SOIC (0.154\", 3.90mm Width)
Receiver hysteresis500 mV
Number of drivers (Receivers)2/2

Product details

RS-232 workhorse, still in active production

The Texas Instruments MAX232D is a full-duplex RS-232 transceiver in a 16-SOIC package, packing two drivers and two receivers (2/2) for serial port conversion between TTL/CMOS and RS-232 signal levels.

5V-only supply — plan your rail accordingly

This part is strictly 5V-powered (4.5V to 5.5V). If your board runs a 3.3V logic rail, you will need a separate 5V supply or a level-shifter ahead of the transceiver. The 120 kbps data rate covers standard UART speeds up to 115200 baud with margin; no need to hunt for a faster part if your application tops out there.

Active lifecycle — no LTB worry

For new designs or sustaining a legacy BOM, this part is a safe pick from a lifecycle standpoint.

Frequently asked questions

Is MAX232D a direct replacement for MAX232?

Yes, the MAX232D is a direct, pin-compatible replacement for the original MAX232. The 'D' suffix indicates the 16-SOIC surface-mount package (the original MAX232 was often in DIP). Check your board footprint — if it was designed for a 16-pin SOIC, this part drops in.

What is the data rate of MAX232D?

The MAX232D supports data rates up to 120 kbps. This covers standard serial speeds like 9600, 19200, 38400, 57600, and 115200 baud with comfortable margin.