TRSF3238ECDWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments TRSF3238ECDWG4 is a multi-channel RS-232 line driver and receiver supporting 3 V to 5.5 V supply with 5 drivers and Schmitt-trigger inputs in a 28-pin SOIC package. It complies with EIA/TIA-232-F and V.28 standards for reliable serial communication. Available worldwide with competitive pricing and fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- OBSOLETE
- Datasheet
- TRSF3238ECDWG4 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 TRSF3238ECDWG4?
- 3 V to 5.5 V wide supply range with RS-232 EIA/TIA-232-F and V.28 compliance, enabling direct connection between 3.3 V MCUs and legacy serial ports without external level translation
- 5-driver multi-channel architecture in a 28-pin SOIC package, providing enough TX/RX pairs for multi-port serial interfaces such as modem control, industrial HMI panels, and embedded PC-COM replacement
- Schmitt-trigger inputs with high input impedance (1 µA max input current) ensure robust noise immunity and clean logic transitions on long RS-232 cable runs in industrial environments
What is TRSF3238ECDWG4 used for?
The TRSF3238ECDWG4 is used in industrial equipment such as PLCs, CNC controllers, and barcode scanners that require multiple RS-232 serial ports operating from a 3.3 V logic supply alongside legacy 5 V RS-232 cabling. It is also well suited for embedded computing modules, single-board computers, and networking appliances that need a compact multi-channel EIA-232-F-compliant interface without discrete level-shifter circuits. Telecom rack units and test instruments that communicate with legacy serial peripherals over V.28-standard lines also rely on this transceiver.
What are the specifications of TRSF3238ECDWG4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | ALSO OPERATES AT 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 Characteristics | 3-STATE |
| 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 |
| 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 | 3.6V |
| Supply Voltage1-Min | 3V |
| Supply Voltage1-Nom | 3.3V |
| Surface Mount | YES |
| Technology | BICMOS |
| 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) | 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 TRSF3238ECDWG4 datasheet?
TRSF3238ECDWG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TRSF3238ECDWG4?
Compatible alternatives and drop-in replacements for TRSF3238ECDWG4:
Frequently Asked Questions
Can TRSF3238ECDWG4 operate directly from a 3.3 V MCU supply while interfacing with 5 V RS-232 cable levels?
Yes. The TRSF3238ECDWG4 accepts a 3 V to 5.5 V VCC supply, so a 3.3 V MCU can power the device directly. Internal charge pumps generate the ±5.5 V or greater RS-232 output swing required by EIA/TIA-232-F from the single low-voltage rail, eliminating the need for a separate 5 V supply or external level-translation circuit when connecting modern 3.3 V logic to legacy RS-232 equipment.
How many simultaneous serial channels does TRSF3238ECDWG4 support, and what does that mean for a multi-port design?
The TRSF3238ECDWG4 integrates 5 drivers and multiple receivers in a single 28-pin SOIC, supporting up to 5 independent RS-232 transmit channels plus matching receive lines. This multi-channel architecture lets a single IC handle a full-handshake COM port (TXD, RXD, RTS, CTS, DTR) plus additional data lines, cutting BOM count and PCB area compared with using multiple dual-channel transceiver ICs in industrial HMI or telecom port-aggregator designs.
What noise immunity advantage do the Schmitt-trigger inputs provide on TRSF3238ECDWG4 in noisy industrial environments?
Schmitt-trigger inputs on the TRSF3238ECDWG4 add hysteresis to the logic threshold, preventing spurious toggling when the RS-232 receive line carries slow edges or coupled noise from nearby power converters. The maximum high-level input current of 1 µA keeps loading minimal on long cable runs, while the defined hysteresis window rejects common industrial noise sources such as relay switching transients and motor drive EMI that affect standard threshold comparators.
Which standard does TRSF3238ECDWG4 comply with, and how does that simplify regulatory approval for serial-port products?
The TRSF3238ECDWG4 is compliant with EIA-232-F, TIA-232-F, and ITU-T V.28, the dominant standards governing RS-232 electrical characteristics. Designing with a fully compliant transceiver means the serial-port interface already satisfies the signal-level and slew-rate requirements cited in CE and FCC pre-compliance checklists, reducing the scope of electrical validation testing needed before submitting equipment for regulatory approval.
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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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