MAX3230E/AE and MAX3231E/AE are +2.5V to +5.5V powered EIA/TIA-232 and V.28/V.24 communications interfaces with low power requirements, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection, in a chip-scale package (UCSP™) and WLP package.
The MAX3230E/AE and MAX3231E/AE are low‑power RS‑232 transceiver ICs that operate from +2.5 V to +5.5 V and support data rates up to 250 kbps. They feature Maxim’s AutoShutdown technology, reducing supply current to 1 µA when no valid RS‑232 signals are present, and provide configurable logic‑level inputs via a separate VL supply.
Both devices are offered in chip‑scale (UCSP) and wafer‑level package (WLP) formats, include dual‑mode regulated charge‑pump voltage conversion, and are protected against electrostatic discharge up to ±15 kV (Human Body Model). The datasheet details absolute maximum ratings, electrical and timing characteristics, pin functions, and recommended operating conditions.
| Supply voltage range | +2.5 V to +5.5 V |
|---|---|
| Logic supply voltage range (VL) | +1.65 V to +5.5 V |
| Maximum data rate | 250 kbps |
| AutoShutdown supply current | 1 µA |
| Operating temperature range | -40 °C to +85 °C |
In AutoShutdown mode the MAX3230E/AE and MAX3231E/AE draw only about 1 µA of supply current.
Both devices guarantee operation at data rates up to 250 kbps.
VCC can be supplied from +2.5 V to +5.5 V, while the separate logic supply VL accepts +1.65 V to +5.5 V.