MAX232ACWE+

Overview

The MAX232ACWE+ is a dual-channel RS-232 transceiver designed for EIA/TIA-232E and V.28/V.24 communication interfaces. It operates from a single +5V power supply, utilizing an internal charge pump to generate the required ±10V levels without external bipolar supplies. The device features two drivers and two receivers with full-duplex operation. Electrical specifications include a data rate of 200 kbps, a typical propagation delay of 3.5 µs for transmitters and 1 µs for receivers, and a supply current of 10 mA at no load. It functions within a temperature range of 0°C to +70°C and is housed in a 16-pin SOIC package.

Feature Summary

• Integrates dual charge-pump circuitry to convert a single +5V input into the ±10V voltages necessary for RS-232 signaling.
• Provides bidirectional logic level translation between TTL/CMOS inputs and RS-232 output standards.
• Supports full-duplex communication through independent driver and receiver channels.

Applications

• Interface translation between microcontrollers and RS-232 peripherals
• Multidrop RS-232 network connections
• Portable diagnostic equipment serial ports

Procurement Notes

Verify the component against the official Analog Devices datasheet to confirm pinout compatibility and electrical ratings. Ensure the specific ordering suffix matches the required package type and temperature grade. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and traceability before procurement.

Selection Notes

Select this component when designing systems requiring RS-232 connectivity powered by a single +5V rail. It is suitable for applications where board space is limited due to the integrated charge pump eliminating external high-voltage generation components. Verify that the 200 kbps data rate meets the system's throughput requirements.

Part Context

This device belongs to the MAX220–MAX249 family of line drivers and receivers. The MAX232 variant specifically provides two drivers and two receivers. The 'A' designation indicates standard performance characteristics, while the '+T' suffix typically denotes tape-and-reel packaging for surface-mount assembly.

Replacement Considerations

The MAX232CWE+ serves as a direct functional replacement within the same series. Other compatible alternatives include the MAX3232EEWE+G1Z for 3V-to-5V operations or the MAX232EEWE+T for extended industrial temperature ranges.