MAX236EWG+

Overview

The MAX236EWG+ is a +5V-powered, multichannel RS-232 driver and receiver manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 4.5V to 5.5V and supports data rates up to 120kbps. The device features an integrated charge pump that eliminates the need for external bipolar ±12V supplies, enabling single-supply operation. It includes internal capacitors to save board space and offers a shutdown mode with a typical current consumption of 1mA. The component is housed in a 24-pin Wide SOIC package and is rated for an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrated charge pump circuitry enables single +5V supply operation without requiring external bipolar power rails.
• Internal capacitors are included to minimize printed circuit board space requirements.
• Shutdown mode significantly reduces power consumption for low-power applications.

Applications

• Interface translation between TTL/CMOS logic and RS-232 standards
• Multidrop RS-232 communication networks
• Portable diagnostics equipment

Procurement Notes

Verify the specific suffix 'WG+' against official manufacturer documentation to confirm lead-free status and RoHS compliance. Ensure the ordering code matches the exact pinout and temperature grade required for your design. Cross-reference the datasheet revision date to confirm the technical specifications align with your project constraints before finalizing procurement.

Selection Notes

Select this component when designing systems that require RS-232 connectivity but lack access to negative voltage supplies. The integrated charge pump simplifies the schematic by removing external boost components. Verify that the 120kbps data rate meets the application's throughput needs and that the 24-pin package fits the available PCB real estate.

Part Context

This part belongs to the MAX220–MAX249 family of line drivers and receivers designed for EIA/TIA-232E and V.28/V.24 interfaces. The family provides various channel configurations and packages to accommodate different interface density requirements while maintaining compatibility with standard RS-232 signaling levels.

Replacement Considerations

Compatible substitutes within the same family include the MAX232, MAX233, MAX235, and MAX245 through MAX247. These parts share similar operational principles and may offer alternative pin counts or package types depending on specific layout constraints.