MAX232EPE

Overview

The MAX232EPE is a +5V-powered, multichannel RS-232 driver/receiver designed for EIA/TIA-232E and V.28/V.24 communications interfaces. It features two drivers and two receivers in a 16-pin DIP package. The device operates from a single +5V supply (4.5V to 5.5V) using an integrated charge pump circuit that generates ±10V internally, eliminating the need for external bipolar supplies. It supports data rates up to 200kbps with a typical transition slew rate of 12V/µs. The receiver input voltage operating range extends to ±30V, providing robust signal handling. The component functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated charge pump circuitry eliminates the requirement for external bipolar power supplies
• Supports full-duplex communication through dual independent drivers and receivers
• Receiver inputs tolerate RS-232 signal levels up to ±30V
• Includes a low-power shutdown mode to minimize energy consumption

Applications

• Interface translation between TTL/CMOS logic and RS-232 serial ports
• Multidrop RS-232 network connections
• Portable diagnostic equipment requiring single-supply operation

Procurement Notes

Verify the specific suffix 'E' confirms the extended temperature rating of -40°C to +85°C. Confirm the 'P' suffix indicates the 16-pin plastic DIP package type. Ensure the datasheet revision matches the required electrical specifications for your design constraints.

Selection Notes

Select this component when a single +5V supply is available and bipolar voltages are not present. It is suitable for applications requiring moderate data rates up to 200kbps. Consider alternative models like the MAX232A if smaller external capacitors are preferred for board space optimization.

Part Context

The MAX232EPE belongs to the MAX220–MAX249 family of line drivers and receivers developed by Maxim Integrated. This series established the standard for single-supply RS-232 interface solutions. The MAX232 variant specifically utilizes external capacitors for its charge pump, distinguishing it from self-contained versions within the same product family.

Replacement Considerations

The MAX232AEPE is a direct replacement offering the same functionality with an extended temperature range. The MAX232A variants provide identical pinouts but require smaller external capacitance values.