MAX232CPE+

Overview

The MAX232CPE+ is a dual-channel, full-duplex RS-232 transceiver designed for EIA/TIA-232E and V.28/V.24 communication interfaces. It operates on a single +5V supply (4.5V to 5.5V) using an integrated charge pump to generate internal ±10V levels, eliminating the need for external bipolar supplies. The device contains two drivers and two receivers with a maximum data rate of 120kbps. It features a typical supply current of 10mA and operates within a commercial temperature range of 0°C to +70°C. Packaged in a 16-pin Plastic Dual In-Line (PDIP) format.

Feature Summary

• Integrated charge pump circuitry enables single-supply operation without requiring external bipolar voltage sources.
• Provides bidirectional level translation between TTL/CMOS logic levels and standard RS-232 signal voltages.
• Supports full-duplex communication through independent transmitter and receiver channels.

Applications

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

Procurement Notes

Verify that the component matches the specific Analog Devices / Maxim Integrated MAX232CPE+ designation. Confirm the package type is 16-PDIP and the operating temperature range is commercial grade (0°C to +70°C). Ensure the datasheet revision aligns with the MAX220–MAX249 family specifications provided by the manufacturer.

Selection Notes

Select this component when designing systems requiring RS-232 connectivity powered exclusively by a +5V rail. It is suitable for applications where board space is limited compared to discrete solutions but does not require the ultra-low power consumption or higher data rates found in the MAX3232 series. Verify that the 120kbps speed meets the system requirements.

Part Context

The MAX232CPE+ belongs to the MAX220–MAX249 family of line drivers and receivers manufactured by Analog Devices Inc. / Maxim Integrated. This family provides various channel configurations and packages tailored for different RS-232 interface needs. The 'C' suffix indicates the commercial temperature rating, while 'P' denotes the PDIP package style.

Replacement Considerations

The MAX232ACWE+T serves as a surface-mount alternative within the same functional family. For lower power consumption requirements, the MAX3232CSE+ offers compatibility with 3.0V to 5.5V supplies and higher data rates.