MAX3224CUP

Overview

The MAX3224CUP is a dual RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single 3.0 V to 5.5 V supply and features AutoShutdown Plus technology, reducing quiescent current to approximately 1 µA during power-down. The device supports data rates up to 1 Mbps and includes two drivers and two receivers for full-duplex communication. It utilizes small external charge pumps requiring only four 0.1 µF capacitors. The component is housed in a 20-pin SSOP package and is rated for operation within the commercial temperature range of 0°C to +70°C.

Feature Summary

• AutoShutdown Plus functionality automatically disables the driver output and places the receiver in a high-input-impedance state when the UART transmit input is inactive or the supply voltage drops below the threshold.

Applications

• Portable equipment requiring low-power serial communication
• Battery-operated systems utilizing RS-232 interfaces
• Industrial control systems with standard RS-232 signaling

Procurement Notes

Verify the specific suffix 'CUP' against official manufacturer documentation to confirm the exact package type and tape-and-reel configuration. Ensure compatibility with the required operating temperature range and supply voltage specifications before procurement.

Selection Notes

Select this component for applications requiring low standby current and minimal external capacitance. Confirm that the 20-pin SSOP footprint matches the PCB layout requirements and that the 1 Mbps data rate satisfies the system's communication speed needs.

Part Context

This part belongs to the MAX3224 family of RS-232 transceivers designed for low-voltage operation. It shares functional similarities with other Maxim integrated circuits but is distinct in its specific pinout and package configuration. The series is known for integrating charge pump circuitry to generate the necessary voltages for RS-232 signaling without external inductors.

Replacement Considerations

Direct replacements include the MAX3224CAP+T and MAX3224EETP+. Verify pin compatibility and electrical specifications before substitution.