SP3232EEN-L EXAR Integrated Circuit (Small Outline Packages) In Stock
EXAR SP3232EEN-L is a dual-driver/dual-receiver RS-232 line transceiver in a 16-pin SOIC package, operating from 3.3V or 5V supply with an output swing exceeding 10V. It meets EIA/TIA-232-F and V.28 standards, integrates Schmitt trigger inputs, and suits space-constrained serial communication designs in industrial and embedded systems.
- Manufacturer
- EXAR
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- TRANSFERRED
- Datasheet
- SP3232EEN-L Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1189(MOQ 100)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual 3.3V/5V supply operation with ±10V minimum output swing ensures full EIA/TIA-232-F compliance across the complete RS-232 voltage range
- Schmitt trigger receiver inputs with hysteresis reject noise on long cable runs and improve signal integrity in noisy industrial RS-232 environments
- Integrated charge-pump voltage doublers and inverters generate ±10V RS-232 output levels from a single 3.3V or 5V rail, eliminating external DC-DC converters
Applications
The SP3232EEN-L is designed for RS-232 serial communication interfaces in embedded microcontroller systems, industrial PLCs, and test equipment where a 3.3V or 5V supply must drive compliant ±10V RS-232 output levels without additional power rails. Its 2-TX/2-RX architecture supports full-duplex serial communication in barcode scanners, HVAC controllers, and legacy RS-232 peripheral interfaces connected to modern 3.3V MCUs. The 16-pin SOIC package fits standard compact PCB layouts and allows drop-in replacement in existing SP3232 or MAX3232 footprints.
Specifications
| Differential Output | NO |
| Driver Number of Bits | 2 |
| Input Characteristics | SCHMITT TRIGGER |
| Interface IC Type | LINE TRANSCEIVER |
| Interface Standard | EIA-232; EIA-232-D; EIA-232-F; V.24; V.28; EIA-562; TIA-232; TIA-232-F; TIA-562 |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e3 |
| Number of Functions | 2 |
| Out Swing-Min | 10V |
| Output Low Current-Max | 0.0016A |
| 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 |
| Receiver Number of Bits | 2 |
| Supply Current-Max | 1mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 3V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Can the SP3232EEN-L operate from a 3.3V supply and still produce compliant RS-232 output voltage levels?
Yes, the SP3232EEN-L operates from a single 3.3V supply (or 5V) and uses an integrated charge pump to generate RS-232-compliant output swings exceeding ±10V, satisfying the EIA/TIA-232-F and V.28 minimum ±5V output requirement. This eliminates the need for a separate ±12V supply rail in 3.3V embedded systems.
How many transmitters and receivers does the SP3232EEN-L integrate, and what serial interface topologies does that support?
The SP3232EEN-L integrates 2 RS-232 transmitters and 2 receivers (2-TX/2-RX) in a 16-pin SOIC, supporting full-duplex RS-232 communication on up to 2 independent serial channels simultaneously. This suits microcontroller designs requiring one debug/console UART plus one application data port, or dual-port industrial equipment communicating with two separate RS-232 hosts.
Why are Schmitt trigger inputs on the SP3232EEN-L receivers beneficial for industrial RS-232 cable installations?
Schmitt trigger inputs provide hysteresis (typically 0.5V) that prevents false transitions caused by ground noise, cable crosstalk, or ESD transients common on RS-232 cable runs exceeding 15 m in factory environments. Without hysteresis, a slow-slew RS-232 signal near the receiver threshold can toggle the output multiple times, corrupting the received byte frame at any baud rate from 1200 to 460800 bps.
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About EXAR
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