MAX3232IDBG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock

The MAX3232IDBG4 is a dual RS-232 line driver/receiver from Texas Instruments operating from a 3 V to 5.5 V supply with on-chip charge pump capacitors for RS-232 voltage generation. It provides 2 drivers and 2 receivers with Schmitt-trigger inputs compliant with EIA/TIA-232-F (V.28). Available in stock with worldwide shipping from authorized distributors.

OBSOLETEIntegrated CircuitVerified Jun 2026
Package / Visual Reference
MAX3232IDBG4Small Outline Packages
Quick Facts
Manufacturer
Texas Instruments
Package
Small Outline Packages
Pin Count
16
Lifecycle
OBSOLETE
Category
Integrated Circuit
Temp Range
-40.0°C to 85.0°C
RoHS
Compliant
Lead Time
3–7 business days
Shipping
DHL Express · Worldwide

What are the key features of MAX3232IDBG4?

  • 3 V to 5.5 V supply range with integrated charge pump, eliminating external RS-232 voltage supply for ±12 V rail generation
  • 2 RS-232 drivers and 2 receivers with Schmitt-trigger inputs for noise-immune UART-to-RS-232 level conversion in a SOIC-16 package
  • Compliant with EIA-232-F, TIA-232-F, and V.28 standards, ensuring interoperability with RS-232 equipment across industrial and commercial applications

What is MAX3232IDBG4 used for?

The MAX3232IDBG4 is used in embedded systems and microcontroller boards that require RS-232 serial communication with PCs, industrial PLCs, and legacy terminal equipment, converting 3.3 V or 5 V UART logic levels to standard RS-232 ±12 V signal levels. It is widely deployed in GPS modules, industrial sensors, and medical instruments that expose a DB9 or screw-terminal RS-232 port for host system integration. Its 3 V minimum supply makes it directly compatible with low-voltage MCUs such as ARM Cortex-M and PIC32 devices without a dedicated 5 V rail.

What are the specifications of MAX3232IDBG4?

YTEOL0
Additional FeatureCAN ALSO OPERATE WITH 5V SUPPLY
Differential OutputNO
Driver Number of Bits2
High Level Input Current-Max0.000001A
Input CharacteristicsSCHMITT TRIGGER
Interface IC TypeLINE TRANSCEIVER
Interface StandardEIA-232-F; TIA-232-F; V.28
JESD-30 CodeR-PDSO-G16
JESD-609 Codee4
Number of Functions2
Out Swing-Min10V
Output Low Current-Max0.0016A
Output PolarityINVERTED
Package Body MaterialPLASTIC/EPOXY
Package Equivalence CodeSSOP16,.3
Package ShapeRECTANGULAR
Package StyleSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Cel)260
Qualification StatusNot Qualified
Receiver Number of Bits2
Supply Current-Max1mA
Supply Voltage-Max3.6V
Supply Voltage-Min3V
Supply Voltage-Nom3.3V
Supply Voltage1-Max5.5V
Supply Voltage1-Min4.5V
Supply Voltage1-Nom5V
Surface MountYES
TechnologyBICMOS
Temperature GradeINDUSTRIAL
Terminal FinishNickel/Palladium/Gold (Ni/Pd/Au)
Terminal FormGULL WING
Terminal Pitch0.65mm
Terminal PositionDUAL
Time@Peak Reflow Temperature-Max (s)30
PackageSmall Outline Packages

Compliance & Regulatory

RoHS StatusCompliant
Lead-FreeYes (Pb-Free)
Moisture Sensitivity LevelMSL 1
ECCNEAR99
HTS Code8542.39.00.60

Where can I find the MAX3232IDBG4 datasheet?

MAX3232IDBG4 Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for MAX3232IDBG4?

Compatible alternatives and drop-in replacements for MAX3232IDBG4:

MAX3232EIDBRE4Texas Instruments Line

Transceiver, 2 Func, 2 Driver, 2 Rcvr, PDSO16

View Part →
MAX3232IDBRG4Texas Instruments

Line Transceiver, 2 Func, 2 Driver, 2 Rcvr, PDSO16

View Part →
MAX3232IDBE4Texas Instruments

Line Transceiver, 2 Func, 2 Driver, 2 Rcvr, PDSO16

View Part →
MAX3232IDBRE4Texas Instruments

Line Transceiver, 2 Func, 2 Driver, 2 Rcvr, PDSO16

View Part →
MAX3232IDBTexas Instruments

Line Transceiver, 2 Func, 2 Driver, 2 Rcvr, PDSO16

View Part →
MAX3232CDBRTexas Instruments

Line Transceiver, 2 Func, 2 Driver, 2 Rcvr, PDSO16

View Part →
MAX3232CDBTexas Instruments

Line Transceiver, 2 Func, 2 Driver, 2 Rcvr, PDSO16

View Part →

Frequently Asked Questions

What supply voltage range does MAX3232IDBG4 support and how does it generate RS-232 voltage levels?

The MAX3232IDBG4 operates from a supply voltage of 3 V to 5.5 V and uses an on-chip charge pump with 4 small external capacitors to generate the ±5.5 V to ±13.2 V RS-232 output swing required by EIA-232-F. This eliminates the need for a separate ±12 V power rail, simplifying the system power design for 3.3 V microcontroller-based RS-232 interfaces.

How many RS-232 channels does MAX3232IDBG4 provide, and what are the input characteristics?

MAX3232IDBG4 provides 2 independent RS-232 drivers and 2 receivers within a single SOIC-16 package. The receiver inputs use Schmitt-trigger hysteresis for reliable data reception in noisy environments, with an input high current maximum of 1 µA, meaning they present virtually no load to the driving RS-232 source and meet TIA-232-F and V.28 electrical specifications.

How does MAX3232IDBG4 compare to MAX232 for modern 3.3 V microcontroller designs?

Unlike the original MAX232 which requires a 5 V supply, MAX3232IDBG4 operates down to 3 V, making it directly compatible with 3.3 V MCUs such as STM32, LPC, and PIC32 without a level-shift stage or 5 V regulator. Both devices provide 2 driver and 2 receiver channels in SOIC packages, but the MAX3232IDBG4 reduces system complexity and power consumption for contemporary low-voltage embedded designs targeting RS-232 connectivity.

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About Texas Instruments

Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.

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OriginChina (Authorized)

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