MAX3231AEEWV+T

Overview

The MAX3231AEEWV+T is a single-channel RS-232 transceiver from Analog Devices/Maxim Integrated, designed for low-power applications. It operates on a VCC supply of +2.5V to +5.5V and supports a logic voltage (VL) range of +1.65V to +5.5V. The device guarantees data rates up to 250kbps with EIA/TIA-232 compliance down to +3.1V and compatibility down to +2.5V. It features AutoShutdown technology, reducing supply current to 1µA when idle. ESD protection ratings include ±15kV (Human Body Model), ±8kV (IEC Contact Discharge), and ±15kV (IEC Air-Gap). The component is housed in a 6x5 WLP package and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• AutoShutdown functionality reduces power consumption by disabling charge pumps and drivers during inactivity.
• Dual-mode regulated charge pump adapts output levels based on supply voltage for optimal efficiency.
• Integrated INVALID signal detector identifies loss of valid RS-232 communication signals.
• Configurable logic interface via separate VL pin allows compatibility with various system logic families.

Applications

• Cell-phone data lump cables
• Personal digital assistants
• Handheld devices

Procurement Notes

Verify the specific suffix 'EWV+' indicates the lead-free WLP packaging variant. Confirm that the 'T' suffix denotes tape-and-reel delivery format. Ensure the ordering code matches the exact electrical grade required for the target application environment.

Selection Notes

Select this model over the MAX3230E/AE variants when only one transmitter and receiver channel are necessary. Verify that the system logic voltage falls within the +1.65V to +5.5V range compatible with the VL input. Ensure the design accommodates four external 0.1µF capacitors for the charge pump operation.

Part Context

This component belongs to the MAX3230E/AE and MAX3231E/AE family of RS-232 transceivers. While the MAX3230 variants provide dual channels, the MAX3231 provides a single channel configuration. Both share identical electrical characteristics, ESD protection levels, and packaging options within the UCSP and WLP form factors.

Replacement Considerations

Publicly confirmed substitutes include MAX3230AEEWV+-T and MAX3231EEBV-T. Verify pinout compatibility and package dimensions before substitution.