MAX3243ECDB

Overview

The MAX3243ECDB is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It operates within a supply voltage range of 3 V to 5.5 V, supporting both 3.3 V and 5 V logic systems. The device features three drivers and five receivers, enabling full-duplex communication with a data rate of up to 500 kb/s. It is housed in an SSOP-28 package and includes a shutdown mode that reduces operating power consumption to approximately 1 mA. The component provides ESD protection rated at 15 kV and functions reliably across an extended temperature range from 0°C to +70°C.

Feature Summary

• Multichannel architecture integrating three independent drivers and five receivers for complex serial communication interfaces.
• Integrated low-noise charge pump circuitry eliminates the requirement for external capacitors, simplifying board layout.
• High electrostatic discharge tolerance ensures robust signal integrity in electrically noisy industrial environments.
• Dedicated shutdown control pin allows for significant power reduction during idle periods.

Applications

• Industrial automation controllers requiring reliable serial data transmission.
• Medical equipment utilizing multiple sensor inputs via RS-232 protocols.
• Point-of-sale terminals and payment processing hardware.
• Data acquisition systems connecting peripheral instruments.

Procurement Notes

Verify the specific suffix 'ECDB' to confirm the commercial temperature grade and SSOP-28 packaging configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design compatibility with existing footprint requirements for surface-mount assembly processes.

Selection Notes

Select this variant when a multichannel solution with three drivers and five receivers is required. The ECDB suffix indicates a commercial temperature range suitable for standard indoor applications. Consider alternative packages if higher pin counts or different thermal performance are necessary for the target enclosure design.

Part Context

This component belongs to the MAX3243E series of multichannel RS-232 transceivers. It shares functional similarities with other members of the family but differs in package type and temperature rating. The ECDB designation specifically identifies the SSOP-28 form factor intended for space-constrained printed circuit board designs.

Replacement Considerations

MAX3243ECDBR: Identical electrical specifications and functionality, differing only in tape-and-reel packaging instead of tube packaging.

FAQ

Does the MAX3243ECDB require external capacitors for operation?

No, the device incorporates an internal charge pump that generates the required positive and negative voltages without external components.

What is the maximum data transmission speed supported?

The device supports data rates up to 500 kb/s under specified operating conditions.

How does the shutdown feature affect power consumption?

Activating the shutdown pin reduces the typical operating supply current to approximately 1 mA, minimizing energy usage during inactive periods.