MAX232ACPE

Overview

The MAX232ACPE 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 with a typical operating current of 10mA. The device supports full-duplex communication at data rates up to 200kbps. It features two drivers and two receivers, providing TTL/CMOS-compatible inputs and outputs. The component utilizes an integrated charge pump circuit to generate the required ±10V internal voltages from a single +5V supply, eliminating the need for external bipolar power sources.

Feature Summary

• Integrated charge pump circuitry eliminates the need for external bipolar ±12V supplies
• Enables single +5V supply operation for simplified system design
• Provides full-duplex RS-232 communication channels

Applications

• Interface translation between TTL/CMOS logic and RS-232 standards
• Multidrop RS-232 network connections
• Portable diagnostics equipment requiring serial communication

Procurement Notes

Verify that the ordering suffix 'C' corresponds to the commercial temperature range (0°C to +70°C) as specified in the manufacturer's documentation. Confirm the package type matches the physical requirements of the target PCB layout. Ensure compatibility with the specific application environment before finalizing procurement decisions.

Selection Notes

Select this component when a standard RS-232 interface is required without the complexity of dual power rails. The AC grade offers a cost-effective solution for commercial applications where extended industrial temperature ranges are not necessary. Verify that the 200kbps data rate meets the bandwidth requirements of the connected peripheral devices.

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 MAX232 variant specifically provides two drivers and two receivers, making it suitable for basic point-to-point serial communication links commonly found in legacy computer systems and embedded controllers.

Replacement Considerations

The MAX232CPE serves as a direct functional replacement for the MAX232ACPE, differing only in the guaranteed operating temperature range.