MAX3243CDWE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The MAX3243CDWE4 is an RS-232 line transceiver from Texas Instruments featuring 3 transmitters and 5 receivers in a 28-pin SOIC package, supporting EIA/TIA-232-F and V.28 standards. It operates from 3V to 5V supply with Schmitt trigger inputs for noise immunity. Available in stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- OBSOLETE
- Datasheet
- MAX3243CDWE4 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 MAX3243CDWE4?
- Triple transmitter and quintuple receiver configuration for full RS-232 multi-channel serial communication
- Schmitt trigger inputs with low 1µA input current for robust noise rejection in industrial environments
- Operates from 3.3V or 5V supply with integrated charge pump, eliminating need for external ±12V rails
- 28-pin SOIC RoHS-compliant lead-free package (e4) with EIA-232-F, TIA-232-F, and V.28 compliance
What is MAX3243CDWE4 used for?
The MAX3243CDWE4 is ideal for industrial and embedded computing applications requiring multiple RS-232 serial channels, such as POS terminals, industrial PCs, and telecom equipment communicating with legacy RS-232 peripherals. Its 3.3V operation with optional 5V compatibility makes it well suited for modern low-power system designs interfacing with modems, GPS receivers, and barcode scanners. The device also serves in scientific instruments and data acquisition systems where reliable, noise-immune serial communication over longer cable runs is critical.
What are the specifications of MAX3243CDWE4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | CAN ALSO OPERATE WITH 5V SUPPLY |
| Differential Output | NO |
| Driver Number of Bits | 3 |
| 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 | 5V |
| Output Low Current-Max | 0.0016A |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP28,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Receive Delay-Max | 150ns |
| Receiver Number of Bits | 5 |
| Supply Current-Max | 1mA |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 3V |
| Supply Voltage-Nom | 3.3V |
| Supply Voltage1-Max | 3.6V |
| Supply Voltage1-Min | 3V |
| Supply Voltage1-Nom | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Transmit Delay-Max | 150ns |
| 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 |
| Country of Origin | Taiwan |
Where can I find the MAX3243CDWE4 datasheet?
MAX3243CDWE4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for MAX3243CDWE4?
Compatible alternatives and drop-in replacements for MAX3243CDWE4:
Frequently Asked Questions
How many transmitters and receivers does the MAX3243CDWE4 have?
The MAX3243CDWE4 integrates 3 RS-232 transmitters and 5 RS-232 receivers, providing flexible multi-channel serial communication capability in a single 28-pin SOIC package, supporting applications that require simultaneous multiple-port RS-232 interface connections.
What supply voltage does the MAX3243CDWE4 operate from?
The MAX3243CDWE4 can operate from a 3.3V supply as its primary voltage, and it can also operate with a 5V supply, making it compatible with a wide range of embedded systems and legacy designs without requiring external negative voltage rails due to its integrated charge pump circuitry.
What interface standard does the MAX3243CDWE4 support?
The MAX3243CDWE4 complies with EIA-232-F, TIA-232-F, and V.28 RS-232 interface standards, ensuring interoperability with standard RS-232 serial ports found in modems, industrial equipment, GPS modules, and test instruments requiring point-to-point serial data communication.
What package is the MAX3243CDWE4 available in?
The MAX3243CDWE4 comes in a 28-pin SOIC (Small Outline Integrated Circuit) surface-mount package, which provides a compact footprint for PCB designs while offering sufficient pin count for three transmit and five receive RS-232 channels plus power and ground connections.
Is the MAX3243CDWE4 RoHS compliant?
Yes, the MAX3243CDWE4 carries the e4 JESD-609 code indicating lead-free, RoHS-compliant construction. It is available in tube packaging and is suitable for use in modern electronics manufacturing requiring environmentally compliant components.
Related Guides
LM5156QDSSRQ1 Automotive Boost Controller Design Guide
Practical LM5156QDSSRQ1 automotive boost design guidance covering operating points, magnetics, MOSFET stress, compensation, layout, and validation.
Jul 24, 2026
EEEFK1H470XP Selection Guide: Choosing a 50 V SMD Aluminum Capacitor
Choose EEEFK1H470XP and related 50 V SMD aluminum capacitors by capacitance, ripple current, ESR, life, and layout constraints.
Jul 24, 2026
LM5156QDSSRQ1 Automotive Boost Controller Selection Guide
Select LM5156QDSSRQ1 for automotive boost, SEPIC, or flyback designs using practical current, thermal, EMI, and sourcing criteria.
Jul 23, 2026
EEEFK1H470XP 50 V SMD Capacitor Decoupling Design Guide
Design EEEFK1H470XP into 12 V and 24 V rails with practical voltage margin, ripple, lifetime, layout, and mixed-capacitor checks.
Jul 23, 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