MAX240CMH+TD

Overview

The MAX240CMH+TD is a full RS-232 transceiver featuring five drivers and five receivers in a 44-MQFP package. It operates on a single +5V supply, utilizing an integrated charge pump to generate the required ±10V internal voltages without external bipolar supplies. The device supports data rates up to 120Kbps with a receiver hysteresis of 500mV. Operating temperature ranges from 0°C to +70°C, and it requires a supply voltage between 4.5V and 5.5V.

Feature Summary

• Integrates dual charge-pump DC-DC converters to generate internal ±10V rails from a single +5V source.
• Includes five independent RS-232 drivers and five receivers for full duplex communication.
• Features low-power shutdown mode to minimize current consumption during idle periods.

Applications

• Interface translation between TTL/CMOS logic and RS-232 serial ports
• Multidrop RS-232 network connections
• Portable diagnostic equipment requiring compact form factors

Procurement Notes

Verify component authenticity through authorized Analog Devices or Maxim Integrated distributors. Confirm the specific ordering suffix matches the required tape and reel packaging format. Ensure compliance with RoHS3 standards and check for any obsolescence notices prior to final procurement decisions.

Selection Notes

Select this component when a high channel count (5/5) is required within a surface-mount footprint. Verify that the 44-pin MQFP package dimensions align with the target PCB layout constraints. Ensure the application environment remains within the specified commercial temperature range of 0°C to +70°C.

Part Context

This part belongs to the MAX220–MAX249 family of +5V-powered multichannel RS-232 drivers and receivers. The family provides various driver/receiver combinations and package options to accommodate different interface density requirements while maintaining compatibility with standard EIA/TIA-232E protocols.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official manufacturer resources for cross-reference information regarding pin-compatible alternatives or updated product line replacements.