MAX3243CDBRG4

Overview

The MAX3243CDBRG4 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 integrates three drivers and five receivers for full-duplex communication with a data rate capability of 250 kb/s. It features a shutdown mode that reduces operating supply current to approximately 1 µA. The component includes ±15 kV electrostatic discharge (ESD) protection on all RS-232 lines according to Human Body Model standards. It is housed in a 28-pin SSOP package and is rated for an extended commercial temperature range from 0°C to +70°C.

Feature Summary

• Integrated ESD protection rated at ±15 kV on all RS-232 transceiver lines to safeguard against electrostatic discharge events.
• Low-power shutdown functionality significantly reduces standby current consumption for energy-efficient system operation.
• Multichannel architecture provides three independent drivers and five independent receivers within a single integrated circuit.

Applications

• Industrial control systems requiring robust serial communication interfaces
• Portable instrumentation and battery-powered devices utilizing low-power modes
• Data acquisition systems connecting microcontrollers to peripheral equipment

Procurement Notes

Verify the specific suffix 'R4' against the manufacturer's official documentation to confirm packaging details and compliance status. Ensure the ordering part number matches the required SSOP-28 package variant. Confirm RoHS compliance requirements align with the project specifications before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring multiple RS-232 channels with high ESD immunity. The 250 kb/s speed is suitable for standard asynchronous serial applications. Consider the 0°C to +70°C temperature range limits compared to industrial-grade alternatives if environmental conditions vary.

Part Context

This part belongs to the MAX3243 family of multichannel RS-232 transceivers. The 'C' designation indicates the commercial temperature grade, while 'DBR' specifies the SSOP-28 surface-mount package and reel packaging. The 'G4' suffix typically denotes lead-free construction and specific manufacturing traceability codes defined by Texas Instruments.

Replacement Considerations

MAX3243CDBRE4: Verified equivalent part number within the same series offering identical electrical characteristics and pinout configuration.

FAQ

What is the ESD protection rating for the MAX3243CDBRG4?

The device provides ±15 kV electrostatic discharge protection on all RS-232 lines according to the Human Body Model (HBM) standard.

Does the MAX3243CDBRG4 support 3.3 V logic levels?

Yes, the device operates with a supply voltage range of 3 V to 5.5 V, making it compatible with both 3.3 V and 5 V logic systems.

How many drivers and receivers are included in this IC?

The MAX3243CDBRG4 integrates three drivers and five receivers, allowing for simultaneous transmission and reception across multiple channels.