MAX243CPE+

Overview

The MAX243CPE+ is a +5V-powered, multichannel RS-232 driver and receiver integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 4.5V to 5.5V and supports data rates up to 200kbps. The device features two drivers and two receivers in a 16-pin PDIP package. It includes an internal charge pump that eliminates the need for external bipolar ±12V supplies. The component functions across a commercial temperature range of 0°C to +70°C.

Feature Summary

• Integrates dual charge-pump DC-DC voltage converters to generate required RS-232 voltages from a single +5V source
• Provides full EIA/TIA-232E compliance with TTL/CMOS-compatible input and output logic levels
• Includes dedicated enable control inputs for managing transmitter and receiver states

Applications

• Interface translation between TTL/CMOS logic and RS-232 serial ports
• Multidrop RS-232 network connections
• Portable diagnostic equipment requiring low-power serial communication

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and temperature grade. Confirm RoHS compliance status through current product environmental declarations. Check for obsolescence notices or lifecycle changes directly from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when designing systems requiring standard RS-232 signaling without access to negative voltage rails. Ensure the application environment remains within the specified 0°C to +70°C operating range. Verify that the system power supply maintains stability within the 4.5V to 5.5V window to guarantee signal integrity.

Part Context

This part belongs to the MAX220–MAX249 family of line drivers and receivers designed for EIA/TIA-232E and V.28/V.24 interfaces. The family offers various configurations with different numbers of drivers and receivers. The MAX243 specifically provides a dual-driver and dual-receiver topology suitable for basic serial communication tasks.

Replacement Considerations

The MAX243CWE+ serves as a pin-compatible alternative offering the same electrical specifications in a surface-mount SOIC package.