MAX220ESE

Overview

The MAX220ESE is a +5V-powered, multichannel RS-232 line driver and receiver manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 4.5V to 5.5V and supports data rates up to 200kbps. The device features an integrated charge pump that generates internal ±10V rails from a single +5V source, eliminating the need for external bipolar supplies. It provides two drivers and two receivers in a 16-pin Narrow SO package. Electrical characteristics include transmitter output swings of ±5V to ±8V, receiver input operating ranges of ±25V, and propagation delays ranging from 0.6µs to 10µs depending on direction.

Feature Summary

• Integrated dual charge-pump circuitry converts a single +5V supply into internal ±10V rails for RS-232 operation.
• Provides full RS-232 signal compatibility with TTL/CMOS logic levels for interface translation.
• Features robust receiver inputs capable of withstanding ±25V input voltages without damage.

Applications

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

Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature range (-40°C to +85°C) and 'SE' denotes the 16-pin Narrow SOIC package. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors before procurement. Ensure ordering details match the exact pinout and electrical specifications required for the target application design.

Selection Notes

Select this component when designing systems that require RS-232 communication but lack access to negative voltage rails. The integrated charge pump simplifies board layout by removing the need for external inductors or complex power management circuits. Verify that the maximum data rate of 200kbps meets the system's throughput requirements and that the 16-pin narrow SOIC footprint fits the available PCB space constraints.

Part Context

The MAX220 belongs to the MAX220–MAX249 family of +5V-powered multichannel RS-232 drivers and receivers. This series is designed for applications where standard ±12V supplies are unavailable. The MAX220 specifically offers two drivers and two receivers, distinguishing it from higher-channel variants like the MAX232 or MAX249 within the same family.

Replacement Considerations

Direct functional replacements within the same family include the MAX232ESE+ and MAX232AISE+. These parts share similar pinouts and electrical characteristics but may differ in channel count or specific electrical tolerances. Verify pin compatibility and thermal performance before substitution.