MAX3232ESE+ Analog Devices Integrated Circuit (Small Outline Packages) In Stock
The MAX3232ESE+ is a 2-driver/2-receiver RS-232 line transceiver IC from Analog Devices operating from a single 3.3 V supply with an external charge pump generating ±5.5 V RS-232 output levels. It features Schmitt-trigger inputs and complies with TIA/EIA-232 in a 16-pin SOIC package. Available in stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- MAX3232ESE+ Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.8694(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual RS-232 driver and dual receiver operating from a single 3.3 V supply with external charge-pump capacitors generating compliant ±5.5 V TIA/EIA-232 output levels
- Schmitt-trigger receiver inputs provide noise immunity on RS-232 lines, handling input signals from ±3 V up to ±15 V for robust serial communication
- Compact 16-pin SOIC (150 mil) package with low 1 µA shutdown current enables easy integration in space-constrained embedded serial port designs
Applications
The MAX3232ESE+ is used to implement RS-232 serial communication ports on 3.3 V MCU-based embedded systems, converting CMOS logic levels to compliant ±5.5 V RS-232 voltage swings without a negative supply. It is commonly deployed in industrial PLCs, GPS receivers, barcode scanners, and point-of-sale terminals that require RS-232 connectivity to legacy PC serial ports or industrial SCADA equipment. Telecom and networking boards that need a low-power RS-232 interface with Schmitt-trigger noise rejection also benefit from this device's 1 µA standby current.
Specifications
| Manufacturer Package Code | 16-SOIC_N-150_MIL |
| Date Of Intro | 1996-05-23 |
| YTEOL | 9 |
| Additional Feature | EXTERNAL CHARGE PUMP |
| 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; TIA-232 |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e3 |
| Number of Functions | 2 |
| Out Swing-Min | 10V |
| Output Characteristics | TOTEM-POLE |
| 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 |
| 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 |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| ## MAX3232ESE+ Alternates Showing results | Image |
| 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 |
| Country of Origin | Japan, Mainland China, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand, USA |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does MAX3232ESE+ generate RS-232-compliant output levels from a 3.3 V single supply?
The MAX3232ESE+ includes an internal charge-pump voltage doubler and inverter that use four external 0.1 µF capacitors to generate an on-board ±5.5 V rail from the 3.3 V supply. The two RS-232 drivers source output voltages between +5.5 V and -5.5 V on the transmit lines, fully meeting the TIA/EIA-232 specification that requires driver output voltages of at least ±5 V under 3 kΩ to 7 kΩ load.
What input voltage range do the MAX3232ESE+ receivers tolerate, and how do Schmitt-trigger inputs improve noise immunity?
The MAX3232ESE+ receivers accept RS-232 input signals across the full ±15 V cable range. The Schmitt-trigger input characteristic provides approximately 500 mV of hysteresis, meaning the receiver does not toggle state due to noise or slow signal edges unless the input crosses two distinct threshold voltages. This is critical for long cable runs at 9600 baud or higher where capacitive loading causes slow edges prone to ringing.
Can MAX3232ESE+ replace a 5 V RS-232 transceiver like MAX232 in a 3.3 V redesign without circuit changes?
The MAX3232ESE+ is pin-compatible with the MAX232 and requires the same four 0.1 µF charge-pump capacitors, so a 5 V MAX232 design can be converted to a 3.3 V MAX3232ESE+ by changing only the supply voltage rail connection. However, designers should verify that the 3.3 V logic levels on the TTL side match the new MCU's output drive and that the PCB decoupling capacitors are rated for the 3.3 V supply — no RS-232 side changes are needed.
What shutdown current does the MAX3232ESE+ draw, and how does it benefit battery-powered serial port designs?
In shutdown mode, the MAX3232ESE+ draws only 1 µA maximum from the 3.3 V supply, compared to its typical active current of around 0.3 mA. For a battery-powered handheld terminal or GPS tracker that uses the RS-232 port only occasionally, enabling shutdown between data transfers can extend battery life by tens to hundreds of hours over continuous operation of a non-shutdown RS-232 transceiver drawing several milliamps.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
Why Buy from FindMyChip
About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
More from Analog Devices
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $4.8332 | $4.83 |
| 215+ | $0.9400 | $202.10 |
| 280+ | $0.9047 | $253.32 |
| 350+ | $0.8694 | $304.29 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”