MAX3222CUP+

Overview

The MAX3222CUP+ is a low-power, true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +3.0V to +5.5V supply and includes an internal dual charge pump requiring only four 0.1µF external capacitors. The device features two drivers and two receivers, ensuring compatibility with EIA/TIA-232 standards at data rates up to 120kbps (typical 235kbps). It is housed in a 20-pin TSSOP package with an operating temperature range of 0°C to +70°C.

Feature Summary

• Integrated dual charge pump eliminates the need for bipolar ±12V supplies
• Low shutdown current extends battery life in portable applications
• Space-saving design requires minimal external components

Applications

• Battery-powered equipment
• Hand-held devices
• Peripherals
• Datacom equipment

Procurement Notes

Verify that the ordering suffix 'C' corresponds to the commercial temperature range of 0°C to +70°C and 'U' indicates the 20-pin TSSOP package. Confirm the '+' suffix denotes lead-free compliance as specified in the manufacturer's documentation before finalizing procurement orders.

Selection Notes

Select this component when interfacing TTL/CMOS logic with RS-232 ports under a single +3.0V to +5.5V supply. It serves as a drop-in replacement for industry-standard MAX242 devices. Ensure the application does not require the higher data rates or additional channels provided by the MAX3237 or MAX3241 variants.

Part Context

This part belongs to the MAX3222/MAX3232/MAX3237/MAX3241 family of low-power RS-232 transceivers. The MAX3222 variant specifically provides two drivers and two receivers, distinguishing it from the MAX3232 which lacks receiver outputs and the MAX3241 which offers five receivers and mouse driveability.

Replacement Considerations

The MAX3222CUP+ is pin, package, and functionally compatible with the industry-standard MAX242.