MAX242CWN+

Overview

The MAX242CWN+ is a full-duplex RS-232 transceiver in an 18-pin Wide SOIC package. It operates from a single +5V supply and includes integrated charge-pump circuitry to generate the required ±10V internal voltages, eliminating the need for external bipolar supplies. The device features two drivers and two receivers with a data rate of 200kbps. It supports a shutdown mode that reduces supply current to 10µA maximum at +25°C. Input protection allows ±30V on receiver inputs.

Feature Summary

• Integrated charge pump eliminates the need for external voltage inversion components
• Single +5V power supply operation simplifies system design
• Shutdown mode significantly reduces power consumption for battery applications

Applications

• Interface translation between TTL/CMOS logic and RS-232 standards
• Multidrop RS-232 communication networks
• Portable diagnostic equipment requiring low power consumption

Procurement Notes

Verify the specific suffix 'CWN+' against the manufacturer's official ordering guide to confirm the Wide SOIC package and commercial temperature range specifications. Ensure compatibility with lead-free manufacturing processes if RoHS compliance is required for the target assembly.

Selection Notes

Select this component when board space is limited by the need for integrated charge pumps. Verify that the 200kbps data rate meets the application requirements. Consider the 18-pin package footprint during PCB layout planning compared to smaller integrated variants like the MAX245.

Part Context

This part belongs to the MAX220–MAX249 family of +5V-powered multichannel RS-232 drivers and receivers. The family provides various channel configurations and integration levels to support diverse EIA/TIA-232E interface needs without requiring high-voltage external supplies.

Replacement Considerations

The MAX242CPN+ is a confirmed pin-compatible alternative in a PDIP-18 package.