Features and Benefits
- Integrated Features Saves Board Space and Simplifies Design
- Charge Pump Circuitry Eliminates the Need for a Bipolar ±12V Supply
- Wide Single-Supply Operation From +3V to +5.5V Supply
- Always-On Extra Outputs Enable Monitoring of External Devices
- Power Saving Extends Battery Life
- 1µA Supply Current in Shutdown Mode While Receiver is Active (MAX3222, MAX3237, MAX3241)
The MAX3222/MAX3232/MAX3237/MAX3241 transceivers have a proprietary low-dropout transmitter output stage enabling true RS-232 performance from a 3.0V to 5.5V supply with a dual charge pump. The devices require only four small 0.1µF external charge-pump capacitors. The MAX3222, MAX3232, and MAX3241 are guaranteed to run at data rates of 120kbps while maintaining RS-232 output levels. The MAX3237 is guaranteed to run at data rates of 250kbps in normal operating mode and 1Mbps in the MegaBaud™ operating mode.
The MAX3222/MAX3232 have 2 receivers and 2 drivers. The MAX3222 and MAX3232 are pin, package, and functionally compatible with the industry-standard MAX242 and MAX232, respectively.
The MAX3241 has 5 receivers and 3 drivers, while the MAX3237 has 3 receivers and 5 drivers. Receivers R1 (MAX3237/MAX3241) and R2 (MAX3241) have extra outputs in addition to their standard outputs. These extra outputs are always active, allowing external devices to be monitored without forward biasing the protection diodes in circuitry that may have VCC completely removed.
The MAX3222, MAX3232, and MAX3241 are available in space-saving TSSOP and SSOP packages with operating temperatures of either -40°C to +85°C or 0°C to 70°C.
- Battery-Powered Equipment
- Handheld Equipment
- High-Speed Modems
- Notebook, Subnotebook, and Palmtop Computers
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Maxim Analog Essentials is a collection of peripheral modules which can plug directly into any FPGA/CPU expansion port which follows the Pmod™ standard established by Digilent, Inc. The collection includes modules containing a wide variety of commonly used analog and mixed signal functions. The modules are supported by software which includes FPGA configuration files for three popular FPGA platforms: Avnet LX-9, Digilent Nexys 3 and Avnet ZEDBoard, as well as example programs to exercise and demonstrate each module. While the example programs demonstrate the module’s functionality, they are well partitioned and documented allowing the core routines to be easily cut and pasted into your own programs. The combination of plug-in simplicity and easy software integration allows for quick migration from idea to working prototype.
Features & Benefits
- Data Converter, Interface, Clock, Sensor, and Other Modules Included to Address Many Design Needs
- Plug in Modules Enable Rapid Hardware Prototyping
- Proven Software Drivers Reduce Development Time
- FPGA Configuration Files Included to Simplify Design Effort
Documentation & Resources
MAX3232 Reliability Data1/12/2023157K
RS-232-Powered Temperature Sensor12/23/2004
Interfacing the MAX1169 ADC to a PIC Microcontroller9/29/2003
Determining Clock Accuracy Requirements for UART Communications8/7/2003
New RS-232 ICs Feature 1µA Supply Current, ±15kV ESD Protection, and 3V Operation8/16/2002
Automatic Test Equipment on a Budget11/19/2001
Guide to Selecting and Using RS-232, RS-422, and RS-485 Serial Data Standards12/29/2000
Tools & Simulations
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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