MAX3243EIRHBR

Overview

The MAX3243EIRHBR is a low-power RS-232 transceiver manufactured by Texas Instruments, housed in a VQFN-32 surface-mount package. It integrates three drivers and five receivers to support full-duplex communication with data rates up to 500 kb/s. The device operates on a single power supply ranging from 3 V to 5.5 V, consuming only 1 mA of quiescent current. It features a shutdown mode for extended battery life and provides ±15 kV electrostatic discharge (ESD) protection on all RS-232 lines. The component functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates three independent line drivers and five independent receivers for multi-channel serial communication.
• Includes a dedicated shutdown pin that reduces power consumption significantly during idle periods.
• Provides robust ±15 kV ESD protection on signal pins to safeguard against electrical stress.
• Operates efficiently on a single 3-V or 5-V supply without requiring external charge pumps.

Applications

• Industrial control systems requiring reliable serial communication interfaces.
• Portable equipment where low power consumption and extended battery life are critical.
• Modems and fax machines utilizing standard RS-232 signaling protocols.
• Data acquisition systems connecting microcontrollers to peripheral devices.

Procurement Notes

Verify the specific suffix 'RHBR' confirms the VQFN-32 package and tape-and-reel packaging format. Ensure the 'E' designation aligns with the required industrial temperature range of -40°C to +85°C. Confirm RoHS compliance status through official manufacturer documentation prior to integration into production assemblies.

Selection Notes

Select this component when designing circuits that require multiple transmit and receive channels within a compact footprint. It is suitable for applications needing high ESD immunity and low standby current. Compare against other series members if different package types like SSOP or SOIC are preferred for manufacturing constraints.

Part Context

This part belongs to the MAX3243E family of multichannel RS-232 transceivers. It shares core electrical specifications with variants such as the MAX3243ECRHBR and MAX3243EIDBR, differing primarily in package style and thermal characteristics. The family is designed for general-purpose serial communication tasks across various electronic industries.

Replacement Considerations

The TRS3243EIRHBR serves as a direct functional substitute within the same package and specification profile. Other MAX3243 variants may be considered if package compatibility allows, provided temperature ranges and driver/receiver counts match the design requirements.