This article compares the SP3232+ and MAX3232+ RS-232 level translator ICs across functionality, electrical characteristics, package options, performance, reliability, application suitability, and design tips. Both parts are modern RS-232 transceivers intended for converting between TTL/CMOS UART logic levels (typically 3.3 V or 5 V) and RS-232 voltage levels. They integrate charge pumps so they can generate the ± voltages required by RS-232 from a single supply (usually 3.3 V to 5.5 V). Despite serving the same role, differences in electrical specs, ESD robustness, power consumption, package availability, and vendor support make one more suitable than the other for particular designs.
. You can typically drop an SP3232 into a circuit designed for a MAX3232 without changing any external components like capacitors. TI E2E support forums Application Use Cases sp3232+vs+max3232+exclusive
| | SP3232+ | MAX3232 | | --- | --- | --- | | Data Rate | Up to 250 kbps | Up to 250 kbps | | Power Supply | Single 5V | Single 5V | | Low-Power Shutdown Mode | < 1 µA | < 1 µA | | ESD Protection | ±15kV (HBM) | ±15kV (HBM) | | Package Options | 16-pin SOIC, 16-pin TSSOP | 16-pin SOIC, 16-pin TSSOP | | Operating Temperature | -40°C to +85°C | -40°C to +85°C | This article compares the SP3232+ and MAX3232+ RS-232