MAX3386EIDWR

Overview

The MAX3386EIDWR is a low-power RS-232 transceiver manufactured by Texas Instruments, designed for portable applications. It integrates three drivers and two receivers within a single chip, supporting full-duplex communication at data rates up to 250 kbps. The device operates from a single 3 V to 5.5 V power supply and utilizes internal charge pumps to generate the required ±6 V RS-232 voltages. It features Schmitt-trigger inputs on receivers for noise filtering and provides ±15 kV ESD protection on all lines according to IEC 1000-4-2 standards. The component is housed in a 20-pin SOIC package and supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates three independent drivers and two receivers for comprehensive RS-232 connectivity
• Provides enhanced electrostatic discharge protection rated at ±15 kV per IEC 1000-4-2 standards
• Operates efficiently on a single low-voltage power supply without external components

Applications

• Portable computing devices such as PDAs and laptops
• Mobile cellular phones and handheld communication equipment
• Industrial control systems requiring robust serial interfaces

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature grade. Ensure compliance with RoHS directives if required by the target application. Confirm that the 20-SOIC footprint matches the design layout constraints before finalizing procurement decisions.

Selection Notes

Select this component when designing systems requiring multiple transmit channels alongside standard receive lines. It serves as a suitable alternative to legacy parts like the MAX3232 when additional driver capacity is necessary. Consider the ±15 kV ESD rating for environments prone to static discharge events.

Part Context

This part belongs to the MAX3386 family of low-power RS-232 transceivers optimized for battery-powered devices. It shares functional similarities with other TI interface ICs but distinguishes itself through its 3/2 configuration. The IDWR suffix indicates a specific tape-and-reel packaging format intended for automated surface-mount assembly processes.

Replacement Considerations

The TRS3386EIDWR is documented as a parameter-equivalent replacement. Verify pin compatibility and electrical specifications against the original design requirements before substitution.