MAX3111ECWI

Controllers Overview

The MAX3111ECWI is a single-chip UART and RS-232 transceiver in a 28-pin Wide SOIC package. It operates on a +3V to +3.6V supply with a typical active current of 0.6mA and shutdown current of 10µA. The device supports data rates up to 250kbps, features an 8-word receive FIFO, and includes internal charge-pump capacitors for voltage generation. It provides ±15kV ESD protection and is compatible with SPI/QSPI/MICROWIRE interfaces.

Controllers Feature Summary

• Integrates a full-featured UART with an RS-232 transceiver in a single 28-pin package
• Features internal charge-pump capacitors eliminating the need for external components
• Provides true RS-232 performance down to a +3V supply voltage
• Includes ±15kV ESD protection on receiver inputs and transmitter outputs

Controllers Applications

• Point-of-Sale (POS) Devices
• Handy-Terminals
• Telecom/Networking Diagnostic Ports
• Industrial Front-Panel Interfaces
• Hand-Held/Battery-Powered Equipment

Controllers Procurement Notes

Verify the specific suffix 'C' indicates the commercial temperature range (0°C to +70°C). Confirm the package type matches the design requirements. Check for end-of-life status as older Maxim products may be discontinued. Ensure the ordering code aligns with the required RoHS compliance specifications.

Controllers Selection Notes

Select this model when a +3.3V supply is available and board space is limited. The integrated charge pump removes external capacitor requirements. Verify that the 250kbps maximum data rate meets system timing needs. Consider the 8-word FIFO depth for processor overhead management.

Controllers Part Context

This component belongs to the MAX3110E/MAX3111E family. The MAX3111E variant is optimized for +3.3V operation, whereas the MAX3110E supports +5V supplies. Both share hardware and software compatibility with the MAX3100 and MAX3222E families.

Controllers Replacement Considerations

Public confirmed substitute part numbers: MAX3110ECWI.