MAX236CWG+T

Overview

The MAX236CWG+T is a +5V-powered, multichannel RS-232 driver and receiver integrated circuit from the Analog Devices/Maxim Integrated MAX220–MAX249 family. Designed for EIA/TIA-232E and V.28/V.24 communications interfaces, it operates on a single +5V supply by utilizing an internal dual charge-pump DC-DC voltage converter to generate ±10V internally. The device features four drivers and three receivers, supporting full-duplex communication with a data rate of up to 120 kbps. It requires four external capacitors (C1–C4) of 1.0μF each for charge pump operation. The component is housed in a 24-pin Wide SO package and supports an operating temperature range of 0°C to +70°C.

Feature Summary

• Integrated dual charge-pump circuitry eliminates the need for external bipolar ±12V power supplies, enabling single-supply +5V operation.
• Provides four independent RS-232 drivers and three independent RS-232 receivers for multichannel serial communication.
• Includes dedicated enable control inputs (ENT and ENR) to manage transmitter and receiver states independently.

Applications

• Interface translation between TTL/CMOS logic levels and RS-232 standards
• Multidrop RS-232 network implementations
• Portable diagnostics equipment requiring low-power serial connectivity

Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors before procurement. Ensure the component source is traceable to Analog Devices or Maxim Integrated to avoid counterfeit parts.

Selection Notes

Select this part when a design requires multiple RS-232 channels within a single package while maintaining a strict single +5V power constraint. Verify that the application can accommodate the necessary 1.0μF external capacitors for the internal charge pumps. Consider alternative models from the same family if fewer channels or integrated capacitor options are preferred.

Part Context

This component belongs to the MAX220–MAX249 family of line drivers and receivers designed for standard RS-232 applications. The family offers various configurations of drivers and receivers across different packages. The MAX236 specifically provides a balanced configuration of four drivers and three receivers suitable for complex serial interface requirements.

Replacement Considerations

Compatible substitutes include other members of the MAX220–MAX249 family such as the MAX232, MAX233, or MAX235, provided they meet the channel count and package requirements. Verify pin compatibility and electrical specifications before substitution.