MAX241EAI+T

Overview

The MAX241EAI+T is a +5V-powered, multichannel RS-232 transceiver from the MAX220–MAX249 family. It integrates four drivers and five receivers within a 28-pin SSOP package. The device operates on a single +5V supply by utilizing internal charge-pump circuitry to generate ±10V for RS-232 signaling. Key electrical parameters include a data rate of 120 kbps, a typical propagation delay of 3.5 µs, and a shutdown supply current of 10 µA at +25°C. The component supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates dual charge-pump DC-DC voltage converters to eliminate the need for external bipolar power supplies.
• Features a low-power shutdown mode that reduces supply current to microampere levels.
• Provides full-duplex communication with TTL/CMOS-compatible inputs and outputs.

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 ordering suffix 'E' confirms the extended industrial temperature range (-40°C to +85°C) and 'I' indicates the SSOP package. Confirm the '+T' designation matches the required reel packaging quantity. Cross-reference the manufacturer's latest datasheet revision to ensure compliance with current RoHS standards and pinout definitions before finalizing procurement orders.

Selection Notes

Select this component when designing systems that require multiple RS-232 channels without access to negative voltage rails. The integrated charge pump simplifies board layout by reducing external capacitor requirements compared to older generations. Ensure the application load does not exceed the unregulated V+ and V- output capabilities during normal operation.

Part Context

This part 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 configurations and package options. The MAX241 specifically provides a high channel count (4 drivers, 5 receivers) suitable for complex serial communication architectures.

Replacement Considerations

The MAX241CWI+T serves as a direct functional replacement but utilizes a Wide SOIC-28 package instead of SSOP. Verify that the footprint and thermal dissipation characteristics of the alternative package are compatible with the existing printed circuit board design constraints.