MAX3237ECDBRG4

Overview

The MAX3237ECDBRG4 is a multichannel RS-232 transceiver manufactured by Texas Instruments, designed for operation with a single 3-V to 5.5-V power supply. It integrates five drivers and three receivers in a full-duplex configuration, supporting data rates up to 1 Mb/s. The device utilizes small external charge pumps requiring only 0.1-uF capacitors. Key electrical parameters include a maximum supply voltage of 5.5 V, a minimum of 3 V, and an operating supply current of 2 mA. It features ESD protection rated at 15 kV and operates within a temperature range of 0°C to +70°C. The component is housed in a 20-pin TSSOP package.

Feature Summary

• Integrates five line drivers and three receivers for multichannel communication
• Operates from a single 3-V to 5.5-V power supply
• Includes shutdown mode for low-power applications
• Provides 15-kV ESD protection on RS-232 lines

Applications

• Portable equipment requiring RS-232 connectivity
• Modems and fax machines
• PDA systems and handheld devices
• Industrial control systems with serial interfaces

Procurement Notes

Verify the exact suffix 'G4' indicates lead-free compliance and RoHS status as per Texas Instruments documentation. Confirm the package type is TSSOP-20 and the temperature grade is industrial (E). Cross-reference the manufacturer part number with official TI databases to ensure authenticity and correct revision level before procurement.

Selection Notes

Select this component when a design requires multiple independent RS-232 channels without needing separate transceivers. It is suitable for space-constrained applications due to the compact TSSOP package. Ensure the system voltage falls within the 3-V to 5.5-V range and that the required data rate does not exceed 1 Mb/s. Verify that the thermal requirements align with the 0°C to +70°C operating range.

Part Context

This part belongs to the MAX3237E family of multichannel RS-232 transceivers. It shares functional similarities with other MAX323x series devices but is distinct in its specific count of drivers and receivers. The 'EC' designation typically refers to the commercial/industrial temperature range and performance grade defined by Texas Instruments for this product line.

Replacement Considerations

Direct substitutes may include other MAX3237 variants with different packages or suffixes, such as MAX3237ECDR or MAX3237ECPW, provided the pinout and electrical specifications match. Verify compatibility with existing PCB footprints and ensure the replacement meets the same ESD and voltage requirements.