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 operates on a single +5V supply using an integrated charge pump to generate internal ±10V rails, eliminating the need for external bipolar supplies. The device features two drivers and two receivers in a 16-pin DIP package. Electrical specifications include a typical data rate of 120 kbps, a transmitter output voltage swing of ±8V under load, and receiver input thresholds between 0.8V and 2.4V. It supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrated charge pump circuitry enables single-supply operation from a +5V source without requiring external bipolar power.
• Provides full RS-232 signal compatibility with TTL/CMOS logic levels for direct interface translation.
• Includes a low-power shutdown mode that significantly reduces current consumption when the device is inactive.

Applications

• Interface translation between microprocessors and serial communication ports
• Multidrop RS-232 network connections
• Portable diagnostics equipment

Procurement Notes

Verify the specific suffix 'EPE+' against the manufacturer's official ordering information table to confirm the exact package type (DIP) and industrial temperature rating (-40°C to +85°C). Ensure the component matches the lead-free RoHS compliance status indicated in the datasheet revision history before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring standard RS-232 signaling with a single +5V power rail. It is suitable for applications where board space allows for four external capacitors (C1-C4) required by the charge pump. Compare against MAX232A variants if tighter electrical tolerances or specific pin configurations are required for the target application.

Part Context

This part belongs to the MAX220–MAX249 family of line drivers and receivers. The MAX232 variant specifically provides two drivers and two receivers, distinguishing it from other family members like the MAX233 which integrates internal capacitors. It serves as a foundational interface solution for legacy serial communication protocols in modern embedded designs.

Replacement Considerations

The MAX232AEPE+ is a compatible alternative within the same family offering identical functionality. Verify that any substitute maintains the 16-pin DIP footprint and the -40°C to +85°C temperature range to ensure mechanical and thermal compatibility with existing layouts.