MAX237CNG

Overview

The MAX237CNG is a multichannel RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It integrates five drivers and three receivers to support full-duplex communication at data rates up to 120 kb/s. The device operates on a single +5V power supply with a typical operating current of 15 mA. It features a propagation delay of 10 µs and lacks built-in ESD protection or shutdown functionality. The component is housed in a 24-pin SOIC package, suitable for surface-mount installation, and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates five independent drivers and three receivers for comprehensive multi-channel serial communication
• Supports full-duplex data transmission over standard RS-232 protocols
• Operates reliably within extended industrial temperature ranges

Applications

• Industrial control systems requiring multiple serial ports
• Data acquisition equipment with multi-channel connectivity
• Embedded systems utilizing RS-232 communication interfaces

Procurement Notes

Verify the specific suffix designation when ordering, as variations such as CNG indicate distinct packaging or environmental ratings compared to other variants like EWG+. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the selected package type matches the PCB footprint requirements exactly to avoid assembly errors.

Selection Notes

Select this component when designing circuits that require more than two RS-232 channels without external multiplexing. Verify that the system does not demand integrated ESD protection, as this variant lacks it. Ensure the design accommodates the 24-pin SOIC footprint and that the power supply remains stable at +5V to maintain signal integrity across all five driver channels.

Part Context

This part belongs to the MAX237 series of multichannel RS-232 transceivers. It shares functional similarities with the ADM237LANZ but differs in package style and manufacturing origin. The MAX237CNG specifically denotes the commercial grade version in a tube package, distinguishing it from the engineering samples or lead-free variants found in the broader product family.

Replacement Considerations

The MAX237ENG+ serves as a verified similar alternative within the same manufacturer lineup. Both parts share identical electrical specifications and channel configurations. Verify package compatibility before substitution, as the ENG+ typically utilizes a different housing format than the CNG variant.