MAX3243IDBG4

Overview

The MAX3243IDBG4 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 package, supporting full-duplex data transmission at rates up to 250 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. It features a shutdown mode to minimize power consumption during idle periods. The component provides 15 kV electrostatic discharge (ESD) protection on both the transmitter inputs and receiver outputs, ensuring robust performance in harsh environments. It is housed in a 28-pin SSOP package and supports operation over an extended industrial temperature range.

Feature Summary

• Integrates three independent drivers and five independent receivers for versatile multi-channel connectivity.
• Provides high-level ESD protection rated at 15 kV on all signal lines to enhance system reliability.
• Includes a dedicated shutdown pin that significantly reduces quiescent current when the device is not active.

Applications

• Industrial control systems requiring reliable serial communication interfaces.
• Portable battery-powered equipment utilizing RS-232 protocols.
• Modems and fax machines needing low-power line driving capabilities.

Procurement Notes

Verify the specific suffix 'G4' indicates RoHS compliance and lead-free manufacturing status as per Texas Instruments standards. Confirm the package type matches the required PCB footprint, as the IDB designation corresponds to the SSOP-28 form factor. Ensure the procurement channel sources genuine components to avoid counterfeit risks associated with legacy interface ICs.

Selection Notes

Select this component when designing circuits that require multiple RS-232 channels without increasing board space. It is suitable for applications demanding low standby power due to its shutdown feature. Compare against the MAX3243E series if higher data rates up to 500 kb/s are necessary, as the standard MAX3243 is limited to 250 kb/s. Ensure the power supply voltage remains within the 3 V to 5.5 V window for proper logic level translation.

Part Context

This part belongs to the MAX3243 family of RS-232 transceivers, which are widely used for serial communication in embedded systems. The 'IDB' suffix specifies the industrial temperature range and SSOP-28 package, while 'G4' denotes environmental compliance. It serves as a direct replacement for older Maxim Integrated versions, maintaining pin compatibility and functional equivalence for design upgrades.

Replacement Considerations

The MAX3243IDWRG4 offers identical electrical specifications but utilizes a SOIC-28 package instead of SSOP-28. For higher speed requirements, the MAX3243EIDBG4 provides a 500 kb/s data rate. Cross-reference with Analog Devices MAX3243 variants for potential supply chain alternatives, ensuring pinout and voltage levels match exactly.