MAX243CWE+T

Overview

The MAX243CWE+T is a dual RS-232 driver and receiver integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +5V supply, utilizing an internal charge pump to generate the required ±10V for RS-232 signaling without external bipolar supplies. The device provides two drivers and two receivers in a 16-pin SOIC-Wide package. Key electrical parameters include a data rate of 200 kbps, a typical transmitter propagation delay of 3.5 µs, and a typical receiver propagation delay of 1 µs. It functions within a temperature range of 0°C to +70°C with a supply voltage of 5V.

Feature Summary

• Integrates dual charge-pump circuits to convert a single +5V supply into the necessary ±10V voltages for RS-232 operation.
• Provides full RS-232 compatibility with EIA/TIA-232E standards while eliminating the need for external bipolar power supplies.
• Features TTL/CMOS-compatible inputs and outputs for direct interfacing with microcontrollers and serial devices.

Applications

• Interface translation between TTL/CMOS logic levels and RS-232 serial ports
• Multidrop RS-232 communication networks
• Portable diagnostic equipment requiring serial connectivity

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm RoHS compliance status via official documentation. Check current production lifecycle status as availability may vary. Ensure proper handling procedures are followed during storage and assembly to maintain device integrity.

Selection Notes

Select this component when designing systems requiring dual-channel RS-232 communication powered exclusively by a +5V rail. Consider the 16-pin SOIC-Wide package constraints and thermal dissipation requirements. Verify that the 200 kbps data rate meets application timing needs and that the operating temperature range aligns with environmental conditions.

Part Context

This part belongs to the MAX220–MAX249 family of +5V-powered multichannel RS-232 drivers and receivers. The family offers various channel configurations and package options tailored for different interface density and space requirements. The MAX243 specifically provides a dual-driver/dual-receiver configuration suitable for standard bidirectional serial communication links.

Replacement Considerations

Public confirmed substitute part numbers: MAX243CWE, MAX243CWET.