MAX232MLP

Overview

The MAX232MLP is a +5V-powered, multichannel RS-232 transceiver from the MAX220–MAX249 family. It provides two drivers and two receivers for full-duplex communication compliant with EIA/TIA-232E standards. The device operates on a single +5V supply (4.5V to 5.5V) using an integrated charge pump to generate internal ±10V levels. It supports data rates up to 200 kbps with typical propagation delays of 3.5µs (TLL to RS-232) and 1µs (RS-232 to TLL). Operating current is typically 10mA at +5V. The component is housed in a 20-pin LCC package and is rated for industrial temperatures ranging from -55°C to +125°C.

Feature Summary

• Integrated charge pump circuitry eliminates the need for external bipolar power supplies
• Enables single-supply operation directly from a +5V source
• Provides full-duplex signal conversion between TTL/CMOS and RS-232 logic levels

Applications

• Interface translation for serial communication ports
• Multidrop RS-232 network connections
• Portable diagnostics equipment requiring low-power serial links

Procurement Notes

Verify the specific suffix 'MLP' against the manufacturer's official ordering guide to confirm the 20-pin LCC package and -55°C to +125°C temperature range. Ensure the datasheet revision matches the required specifications for your design. Cross-reference the part number with authorized distributors to confirm availability and authenticity before procurement.

Selection Notes

Select this component when board space is limited and bipolar power supplies are unavailable. It is suitable for applications requiring robust RS-232 signaling over standard TTL interfaces. Verify that the external capacitor values match the datasheet recommendations for the chosen operating temperature range to ensure stable voltage generation.

Part Context

This device belongs to the MAX220–MAX249 family of line drivers and receivers designed for EIA/TIA-232E and V.28/V.24 interfaces. The family offers various channel counts and packages. The MAX232 variant specifically provides two drivers and two receivers, making it a standard choice for basic serial port implementations where dual-channel capability is required.

Replacement Considerations

Compatible alternatives within the same family include the MAX232A, which shares similar electrical characteristics but may differ in manufacturing revisions or specific parameter tolerances. Verify pinout compatibility and thermal performance when substituting.