MAX238CWG

Overview

The MAX238CWG+ is a multichannel RS-232 transceiver designed for EIA/TIA-232-E and V.28/V.24 communication interfaces. It integrates four drivers and four receivers, supporting full-duplex data transmission at rates up to 120 kb/s. The device operates exclusively 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. Packaged in a 24-pin SOIC (Wide) format, it functions within an industrial temperature range of 0°C to +70°C.

Feature Summary

• Integrates four independent drivers and four receivers for comprehensive multi-channel serial communication.
• Operates on a single +5V supply, eliminating the need for external negative voltage generation circuits.
• Supports standard RS-232 protocols including EIA/TIA-232-E, V.28, and V.24 specifications.

Applications

• Industrial control systems requiring robust serial communication links.
• Point-of-sale (POS) terminals utilizing RS-232 peripherals.
• Medical equipment interfaces adhering to standard serial protocol requirements.

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and RoHS compliance status. The MAX238CWG+ designation indicates a lead-free, RoHS-compliant variant in a 24-SOIC package. Confirm availability through authorized distributors as supply levels may fluctuate. Ensure the ordering part number matches the required pinout and electrical characteristics precisely.

Selection Notes

Select this component when four independent RS-232 channels are required without the need for low-power shutdown modes. It is suitable for applications where ESD protection is handled externally or is not critical. Compare against the MAX232 family for similar functionality but verify driver/receiver counts and package constraints. Ensure the system design accommodates the lack of internal ESD protection if operating in high-noise environments.

Part Context

The MAX238 belongs to the Maxim Integrated RS-232 interface family, which provides solutions for serial communication needs. It serves as a multi-channel alternative to single-channel transceivers like the MAX232. The device is manufactured by Analog Devices Inc., following the acquisition of Maxim Integrated. It represents a standard solution for legacy serial interface integration in modern electronic designs.

Replacement Considerations

The MAX238CNG+ is a verified equivalent offering identical electrical performance in a 24-pin PDIP package. Verify that the target application supports through-hole mounting if substituting with the CNG variant. Other series members may offer different channel counts or power consumption profiles.