MAX202EWE+

Drivers, Receivers, Transceivers Overview

The MAX202EWE+ is a dual driver/receiver RS-232 transceiver designed for single +5V supply operation. It features an integrated charge pump circuitry that eliminates the need for external bipolar ±12V supplies, generating internal voltage levels from four 0.1µF external capacitors. The device supports full-duplex communication with data rates exceeding 120kbps while maintaining ±5V output signal levels compliant with EIA/TIA-232E specifications. It operates within a supply voltage range of 4.5V to 5.5V and includes TTL/CMOS compatible inputs. The component is housed in a 16-pin Wide SO package and is rated for industrial temperature ranges from -40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Integrated charge pump circuitry enables single +5V or 9V to +12V supply operation without requiring external bipolar power sources.
• Drivers maintain specified ±5V EIA/TIA-232E output signal levels at data rates exceeding 120kbps under standard loading conditions.
• Receiver inputs feature guaranteed thresholds of +0.8V and +2.4V, providing improved noise margins and compatibility with TTL/CMOS logic levels.

Drivers, Receivers, Transceivers Applications

• Battery-powered equipment requiring simplified power architectures
• Handheld diagnostic tools and portable instrumentation
• Industrial control systems utilizing serial communication interfaces

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature range (-40°C to +85°C) compared to the commercial 'C' variant. Confirm the 'WE' designation corresponds to the 16-pin Wide Small-Outline package. Ensure the '+T' suffix is present if reel packaging is required rather than tube. Cross-reference the manufacturer part number with official Analog Devices documentation to confirm current production status and RoHS compliance details.

Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems that require RS-232 connectivity but lack access to negative voltage rails. The integrated charge pump simplifies board layout by reducing external component count to four capacitors. Consider the 120kbps maximum data rate limitation for high-speed applications. Verify that the 16-pin Wide SO footprint fits the available PCB space constraints relative to narrow SO or DIP alternatives.

Drivers, Receivers, Transceivers Part Context

This device belongs to the MAX200–MAX209 family of +5V-powered RS-232 transceivers. Unlike the MAX203 or MAX205 which integrate internal capacitors, the MAX202 requires four external 0.1µF capacitors for its charge pump operation. It shares functional similarities with the MAX232 but offers enhanced receiver input thresholds for better noise immunity in noisy environments.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitutes include the MAX202ESE (Narrow SO package) and MAX202CWE (Commercial temperature range). Verify pinout compatibility and thermal performance differences between package variants before substitution.