MAX238CWG+

Overview

The MAX238CWG+ is a +5V-powered, multichannel RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It features four drivers and four receivers, supporting full-duplex communication at data rates up to 120 kbps. The device operates within a single +5V supply voltage range and includes internal charge pumps to generate the necessary voltages for RS-232 signaling without external components. It is housed in a 24-SOIC package with an operating temperature range of 0°C to +70°C.

Feature Summary

• Multichannel RS-232 interface capability with integrated driver and receiver channels
• +5V single-supply operation eliminating the need for dual-voltage sources
• Internal charge pump circuitry for generating RS-232 signal levels

Applications

• EIA/TIA-232-E communications interface applications
• V.28/V.24 serial port implementations
• Industrial equipment requiring robust RS-232 connectivity

Procurement Notes

Verify the specific suffix 'WG+' against the manufacturer's current datasheet to confirm pinout compatibility and RoHS status. Check for alternative packaging options such as tape-and-reel if available. Confirm lead times and availability directly with authorized distributors, as stock levels fluctuate. Ensure the procurement channel provides genuine parts with traceable origin to avoid counterfeit components.

Selection Notes

Select this component when a standard +5V RS-232 interface with four transmit and receive lines is required. It is suitable for designs where space constraints favor surface-mount SOIC packaging over DIP alternatives. Consider the 120 kbps speed limit when evaluating higher-speed requirements. Verify that the application environment stays within the commercial temperature range of 0°C to +70°C.

Part Context

This part belongs to the Maxim Integrated MAX238 family of multichannel RS-232 drivers and receivers. It is designed for use in all EIA/TIA-232E and V.28/V.24 communications interface applications. The device simplifies design by integrating the charge pump and level shifting circuitry into a single compact package, reducing the bill of materials compared to discrete solutions.

Replacement Considerations

The MAX238CNG+ is a PDIP variant of the same functional device. Other compatible parts in the MAX232/MAX238 family may offer different channel counts or packages. Verify pin-to-pin compatibility before substitution. Consult the official datasheet for detailed electrical parameter comparisons.