SN65C3243DWE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN65C3243DWE4 is a triple-transmitter, quintuple-receiver RS-232 transceiver operating from a 3.3 V or 5 V supply, with integrated charge pumps, Schmitt-trigger inputs, and 28-pin SOIC package. Designed for multi-port serial communication in industrial and computing equipment.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- OBSOLETE
- Datasheet
- SN65C3243DWE4 Datasheet PDF
- 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 SN65C3243DWE4?
- 3 RS-232 transmitters and 5 receivers in a single 28-pin SOIC package
- Operates at both 3.3 V and 5 V supply voltages for flexible system integration
- Integrated charge pump generates ±5.5 V RS-232 levels from a single supply
- Schmitt-trigger inputs improve noise immunity on received serial data lines
- EIA-232 compliant output levels for direct connection to standard RS-232 equipment
- Low quiescent current suitable for power-sensitive serial interface designs
What is SN65C3243DWE4 used for?
SN65C3243DWE4 is used in embedded computing platforms, industrial PCs, and test equipment requiring multiple simultaneous RS-232 serial ports driven from a single 3.3 V or 5 V rail. It serves communications infrastructure equipment and legacy serial port expansion cards where space-efficient integration of 3 transmit and 5 receive channels reduces component count. Typical end applications include modem interfaces, barcode scanner hosts, and serial console connections on embedded single-board computers.
What are the specifications of SN65C3243DWE4?
| YTEOL | 0 |
| Additional Feature | ALSO OPERATES AT 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 |
| JESD-30 Code | R-PDSO-G28 |
| JESD-609 Code | e4 |
| Number of Functions | 3 |
| Out Swing-Min | 10V |
| Output Characteristics | 3-STATE |
| Output Low Current-Max | 0.0016A |
| Output Polarity | TRUE |
| 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 |
| 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 | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| 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 SN65C3243DWE4 datasheet?
SN65C3243DWE4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN65C3243DWE4?
Compatible alternatives and drop-in replacements for SN65C3243DWE4:
Frequently Asked Questions
How many transmitters and receivers does SN65C3243DWE4 integrate, and what voltage does it support?
SN65C3243DWE4 integrates 3 RS-232 transmitters and 5 RS-232 receivers in a single IC. It operates from either a 3.3 V or 5 V supply, with an on-chip charge pump generating the ±5.5 V bus levels required by the EIA-232 standard, eliminating the need for external voltage converters.
Which interface standard does SN65C3243DWE4 comply with and what is the maximum transmitter output voltage?
SN65C3243DWE4 complies with the EIA-232 (RS-232) interface standard. The transmitters produce output voltage swings compliant with EIA-232 levels, typically ±5 V or greater, ensuring reliable communication with legacy and modern RS-232 serial ports across standard DB-9 and DB-25 connector interfaces used in industrial and computing equipment.
Why choose SN65C3243DWE4 for a multi-port RS-232 design instead of using multiple single-channel transceivers?
SN65C3243DWE4 consolidates 3 transmit and 5 receive channels into a single 28-pin SOIC footprint, reducing PCB area, bill-of-materials cost, and assembly complexity compared to populating multiple discrete single-channel devices. Its Schmitt-trigger receiver inputs also provide 0.5 V hysteresis, improving signal integrity on noisy industrial serial bus wiring.
Is SN65C3243DWE4 compatible with 3.3 V microcontroller logic as well as 5 V systems?
Yes, SN65C3243DWE4 supports dual supply operation at 3.3 V and 5 V, making the logic-side I/O pins directly compatible with both 3.3 V LVTTL and 5 V TTL microcontrollers and FPGAs. This dual-voltage capability simplifies mixed-voltage system designs without requiring additional level-shifting components between the transceiver and the host processor.
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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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