MAX218CAP+T

Drivers, Receivers, Transceivers Overview

The MAX218CAP+T is a dual RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 20-pin SSOP package. It operates from a single supply voltage ranging from +1.8V to +4.25V and supports data rates up to 120kbps. The device integrates two drivers and two receivers with on-board DC-DC converters that generate the necessary ±6.5V for true RS-232 levels. Supply current is typically 1.9mA at 3.0V, reducing to 0.04µA in shutdown mode. It functions within a temperature range of 0°C to +70°C.

Drivers, Receivers, Transceivers Feature Summary

• Operates directly from two alkaline, NiCd, or NiMH cells without external voltage regulators
• Integrates on-board DC-DC converters to generate required RS-232 voltage levels
• Features a low-power shutdown mode that reduces current consumption significantly
• Provides three-state receiver outputs allowing multiple interfaces to be wire-ORed

Drivers, Receivers, Transceivers Applications

• Battery-powered equipment
• Portable computers
• Printers and peripherals
• Instruments and modems

Drivers, Receivers, Transceivers Procurement Notes

Verify the component matches the specific MAX218CAP+T designation, ensuring it corresponds to the commercial temperature range (0°C to +70°C) and the 20-pin SSOP package. Confirm authenticity through authorized Analog Devices channels, as Maxim Integrated products are now managed under the ADI portfolio. Check datasheet revisions for any pin configuration updates regarding the NC terminal.

Drivers, Receivers, Transceivers Selection Notes

Select this component when designing battery-operated serial communication systems requiring minimal power consumption. It is suitable for applications needing direct operation from two-cell battery packs without linear regulation. Ensure the design accommodates the external inductor and diode required for the switch-mode power supply section to maintain efficiency and meet EIA/TIA-232E specifications.

Drivers, Receivers, Transceivers Part Context

The MAX218 is part of the Maxim Integrated RS-232 transceiver family, designed specifically for low-voltage, battery-powered applications. It serves as a predecessor to later auto-shutdown variants like the MAX3218. The device bridges legacy RS-232 standards with modern low-voltage CMOS logic, enabling portable devices to communicate with standard serial ports while maximizing battery life.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX3218 is a pin-compatible upgrade offering AutoShutdown functionality. For applications requiring higher data rates or different voltage ranges, consider the MAX3232 or MAX562 series. Verify that any replacement maintains the required 120kbps rate and compatible package footprint.