MAX3243EIDBR

Overview

The MAX3243EIDBR is a low-power RS-232 transceiver manufactured by Texas Instruments, designed for multi-channel communication applications. It integrates three drivers and five receivers within a single SSOP-28 package, supporting full-duplex data transmission at rates up to 500 kb/s. The device operates on a single power supply ranging from 3 V to 5.5 V, with a typical operating current of 1 mA. Key electrical specifications include a propagation delay of 0.15 µs and ESD protection rated at 15 kV. It functions reliably across an industrial temperature range of -40°C to +85°C and includes a shutdown feature for power management.

Feature Summary

• Integrates three independent drivers and five receivers for multi-channel serial communication
• Provides robust electrostatic discharge (ESD) protection rated at 15 kV
• Features a dedicated shutdown pin to minimize power consumption during idle periods
• Supports standard RS-232 voltage levels with internal charge pump circuitry

Applications

• Industrial control systems requiring multiple serial ports
• Portable instrumentation and battery-powered devices
• Modem and communications equipment interfaces
• Point-of-sale terminals and barcode scanners

Procurement Notes

Verify the specific suffix IDBR corresponds to the SSOP-28 package and reel packaging configuration. Confirm RoHS compliance status and ensure the component meets the required operating temperature range for the target environment. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before procurement.

Selection Notes

Select this component when designing circuits that require three transmit and five receive channels in a compact surface-mount footprint. Ensure the system power supply remains within the 3 V to 5.5 V range to maintain proper signal integrity. Consider the 500 kb/s data rate limit and the need for external capacitors for the internal charge pump when evaluating board space and bill of materials.

Part Context

This part belongs to the MAX3243E family of low-power RS-232 transceivers. It shares functional similarities with other members like the MAX3243ECDWR but differs in package type and thermal characteristics. The IDBR suffix specifically denotes the SSOP-28 housing and tape-and-reel delivery method, distinguishing it from tube-packaged or alternative package variants within the same product line.

Replacement Considerations

The TRS3243EIDBR is a documented parameter-equivalent substitute from Texas Instruments. Verify pin compatibility and electrical specifications against the original datasheet before implementation.