MAX3232CDE4 Texas Instruments Integrated Circuit (Other) In Stock
The MAX3232CDE4 is a dual RS-232 line driver and receiver IC from Texas Instruments, compliant with EIA/TIA-232-F and V.28 standards. It features 2 drivers and 2 receivers with Schmitt-trigger inputs, operates from a 3.3 V supply while also supporting 5 V, and is packaged in a 16-pin SOIC for UART serial interface designs.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- MAX3232CDE4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual RS-232 driver/receiver compliant with EIA-232-F, TIA-232-F, and V.28 standards
- Schmitt-trigger receiver inputs for improved noise rejection on long serial cable runs
- Operates from 3.3 V supply with optional 5 V compatibility for mixed-voltage systems
- 2 drivers and 2 receivers in a single 16-pin SOIC for complete UART channel isolation
- Integrated charge pump capacitors require only 4 small external capacitors (typically 100 nF)
- RoHS-compliant (e4) lead-free construction, active lifecycle status
Applications
The MAX3232CDE4 is commonly used to translate between 3.3 V UART logic levels and RS-232 voltage levels (±5 V to ±15 V) in industrial computers, embedded controllers, and communication gateways requiring a serial debug or data port. It bridges modern 3.3 V microcontrollers to legacy RS-232 terminal equipment, modems, and industrial instruments that require EIA-232-F signaling. The dual driver/receiver architecture in a 16-pin SOIC makes it straightforward to implement full-duplex RS-232 serial communication with minimal external components.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | CAN ALSO OPERATE WITH 5V SUPPLY |
| Differential Output | NO |
| Driver Number of Bits | 2 |
| 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-G16 |
| JESD-609 Code | e4 |
| Number of Functions | 2 |
| Out Swing-Min | 10V |
| Output Low Current-Max | 0.0016A |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Receive Delay-Max | 300ns |
| Receiver Number of Bits | 2 |
| 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 | BICMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Transmit Delay-Max | 300ns |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MAX3232CDE4:
Frequently Asked Questions
How does MAX3232CDE4 handle 3.3 V UART-to-RS-232 level conversion, and what output voltage swing does it produce on the RS-232 line?
MAX3232CDE4 uses an internal charge pump to generate ±5 V to ±8 V RS-232 output swings from a 3.3 V supply, fully meeting EIA-232-F minimum ±5 V driver output requirement. The 2 drivers convert 3.3 V CMOS logic highs and lows from a UART peripheral into the positive and negative voltages required on the RS-232 bus, while the 2 Schmitt-trigger receivers convert incoming RS-232 signals back to 3.3 V CMOS logic.
What external components are required to complete an RS-232 interface using MAX3232CDE4?
MAX3232CDE4 requires 4 external charge pump capacitors, typically 100 nF each, connected to the V+, V-, C1, and C2 pins to generate the internal ±voltage rails. No external power supply beyond the 3.3 V to 5 V VCC rail is needed. The 16-pin SOIC layout keeps the complete RS-232 interface circuit, including decoupling capacitors, within a small PCB footprint suitable for board-level serial port implementations.
Is MAX3232CDE4 a suitable drop-in replacement for legacy 5 V MAX232 ICs in existing PCB designs being modernized to 3.3 V logic?
MAX3232CDE4 is designed for 3.3 V primary operation but the spec notes it can also operate with a 5 V supply, giving flexibility during system transitions. However, the pinout may differ from classic MAX232 devices, so confirm pin compatibility before treating it as a direct drop-in. Both provide 2 RS-232 drivers and 2 receivers in a 16-pin SOIC format with EIA-232-F compliance at data rates up to 120 kbit/s.
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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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