MAX3238CDBRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
MAX3238CDBRG4 is a Texas Instruments multichannel RS-232 line driver and receiver transceiver compliant with EIA/TIA-232-F, operating from 3 V to 5.5 V supply. It integrates 5 drivers and multiple receivers with Schmitt trigger inputs in a 28-pin SOIC package. Ideal for multi-port serial communication interfaces in industrial and embedded systems.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- OBSOLETE
- Datasheet
- MAX3238CDBRG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MAX3238CDBRG4?
- 5 RS-232 drivers with EIA/TIA-232-F compliance enabling multi-port serial communication from a single 3 V to 5.5 V supply
- Schmitt trigger inputs on receiver channels providing hysteresis noise immunity for reliable data reception in noisy industrial environments
- 3 V to 5.5 V operating supply range simplifying integration with both 3.3 V microcontrollers and legacy 5 V RS-232 systems
- 28-pin SOIC package providing all transmitter and receiver channels in a compact form factor for multi-port UART interface boards
What is MAX3238CDBRG4 used for?
MAX3238CDBRG4 is used in multi-port RS-232 serial interfaces for industrial PLCs, embedded controllers, and test equipment where multiple UART channels must connect to legacy RS-232 equipment. Its 3 V to 5.5 V supply range makes it directly compatible with modern microcontrollers while driving the ±5 V to ±15 V RS-232 voltage levels required by legacy host systems. The device also suits panel PC serial expansion cards and modem interface boards needing 5 independent RS-232 transmit channels.
What are the specifications of MAX3238CDBRG4?
| YTEOL | 0 |
| Additional Feature | CAN ALSO OPERATE WITH 5V SUPPLY |
| Differential Output | NO |
| Driver Number of Bits | 5 |
| High Level Input Current-Max | 0.000001A |
| Input Characteristics | SCHMITT TRIGGER |
| Interface IC Type | LINE TRANSCEIVER |
| Interface Standard | EIA-232-F; TIA-232-F; V.28 |
| JESD-30 Code | R-PDSO-G28 |
| JESD-609 Code | e4 |
| Number of Functions | 3 |
| Out Swing-Min | 10V |
| Output Low Current-Max | 0.000001A |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP28,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Receiver Number of Bits | 3 |
| Supply Current-Max | 2mA |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 3V |
| Supply Voltage-Nom | 3.3V |
| Supply Voltage1-Max | 5.5V |
| Supply Voltage1-Min | 4.5V |
| Supply Voltage1-Nom | 5V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the MAX3238CDBRG4 datasheet?
MAX3238CDBRG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for MAX3238CDBRG4?
Compatible alternatives and drop-in replacements for MAX3238CDBRG4:
Frequently Asked Questions
How many RS-232 driver channels does MAX3238CDBRG4 provide and what supply voltage does it require?
MAX3238CDBRG4 integrates 5 RS-232 drivers and operates from a 3 V to 5.5 V supply, internally generating the ±5.5 V RS-232 output levels from the low-voltage rail using built-in charge pump capacitors. This enables direct interfacing to legacy RS-232 serial equipment from modern 3.3 V microcontroller systems without a separate bipolar power supply.
What does the Schmitt trigger input on MAX3238CDBRG4 receivers do for noisy industrial serial links?
The Schmitt trigger inputs provide approximately 0.5 V of hysteresis, ensuring clean logic transitions even when the RS-232 input signal has noise, ringing, or slow edges. In industrial environments where RS-232 cables run near motor drives or relay panels, this hysteresis prevents false bit framing errors that would occur with standard comparator-level receiver inputs at 115,200 baud.
Can MAX3238CDBRG4 operate from a 3.3 V supply in a design connecting to legacy 5 V RS-232 serial port equipment?
Yes. MAX3238CDBRG4 operates from 3 V to 5.5 V and generates RS-232 output levels compliant with EIA-232-F specification (typically ±5.5 V outputs) regardless of supply voltage in this range. This allows a 3.3 V microcontroller-based board to drive all 5 RS-232 transmitter channels to levels fully compatible with legacy 5 V PC serial ports and industrial terminals.
When would MAX3238CDBRG4 be selected over a single-channel RS-232 transceiver in an embedded design?
MAX3238CDBRG4 is the better choice when 5 independent RS-232 channels are needed, such as a multi-port serial expansion module, a PLC with several sensor ports, or a gateway device bridging multiple UART buses to RS-232. Using a single 28-pin device replaces 5 separate single-channel transceivers, reducing BOM cost, total board area, and assembly complexity on high-channel-count serial interface boards.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
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.
More from Texas Instruments
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit