TRSF3238CDWRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
TRSF3238CDWRG4 is a 5-driver/5-receiver RS-232 line transceiver from Texas Instruments in a 28-pin SOIC package. It operates from a single 3 V to 5.5 V supply with on-chip charge pump, providing full EIA-232 signal levels with Schmitt-trigger inputs for noise immunity. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- OBSOLETE
- Datasheet
- TRSF3238CDWRG4 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 TRSF3238CDWRG4?
- 5 RS-232 drivers and 5 receivers in a single 28-pin SOIC, covering all handshaking and data lines for complete multi-port serial interfaces
- Single 3 V to 5.5 V supply operation with integrated charge pump eliminates external ±12 V supply for RS-232 level generation
- Schmitt-trigger receiver inputs with 1 µA maximum input current ensure clean logic transitions from slow or noisy RS-232 signal edges
What is TRSF3238CDWRG4 used for?
TRSF3238CDWRG4 is ideal for microcontroller and DSP designs that require full RS-232 serial port functionality, including RTS/CTS hardware flow control, from a single low-voltage power rail. It suits industrial HMI panels, embedded Linux systems, and point-of-sale terminals where up to 5 simultaneous RS-232 lines must be driven and received from a 3.3 V or 5 V logic supply without any external charge-pump capacitors larger than 0.1 µF.
What are the specifications of TRSF3238CDWRG4?
| 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 |
| JESD-30 Code | R-PDSO-G28 |
| Number of Functions | 5 |
| 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 |
| 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 Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the TRSF3238CDWRG4 datasheet?
TRSF3238CDWRG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TRSF3238CDWRG4?
Compatible alternatives and drop-in replacements for TRSF3238CDWRG4:
Frequently Asked Questions
How does TRSF3238CDWRG4 generate RS-232 voltage levels from a single 3.3 V supply without an external power rail?
TRSF3238CDWRG4 integrates a charge-pump doubler and inverter that converts a 3 V to 5.5 V supply into the ±5.5 V to ±8 V swing required by EIA-232, using four small external capacitors of 0.1 µF each. This eliminates the need for a separate ±12 V DC-DC converter, cutting BOM cost by 2 to 4 components and saving approximately 50% of PCB area compared to discrete level-translation solutions.
How many serial port lines can TRSF3238CDWRG4 support simultaneously in a full-handshake RS-232 application?
TRSF3238CDWRG4 contains 5 drivers and 5 receivers, sufficient to implement 2 full RS-232 ports each with TXD, RXD, RTS, CTS, and DTR/DSR handshaking, or a combination of 5 independent data or control lines in mixed configurations. This makes it a complete single-chip serial port solution for embedded systems requiring multi-port RS-232 connectivity without stacking multiple transceiver ICs.
What advantage does the Schmitt-trigger receiver input of TRSF3238CDWRG4 provide in long-cable industrial RS-232 installations?
The Schmitt-trigger inputs provide hysteresis of approximately 0.5 V, preventing multiple output transitions when RS-232 signal edges are degraded by cable capacitance over runs of 15 m or more. With an input leakage of only 1 µA maximum, the receivers do not load the cable source, maintaining valid RS-232 signal levels above ±3 V at the receiver end even on 50-foot cable runs at 9600 bps and beyond.
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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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