MAX3232CDBE4

Overview

The MAX3232CDBE4 is a dual transmitter and receiver RS-232 interface integrated circuit manufactured by Texas Instruments. It operates within a supply voltage range of 3.0 V to 5.5 V, supporting both 3.3 V and 5 V logic systems. The device features a data rate of 250 kb/s with full-duplex communication capability. It incorporates built-in charge pumps that generate the required ±9 V levels from a single power supply, eliminating the need for external negative voltage sources. The component provides 15 kV ESD protection on input and output lines and functions within an operating temperature range of 0°C to +70°C. It is housed in a 16-pin SSOP package.

Feature Summary

• Integrates dual drivers and receivers for simultaneous bidirectional serial communication
• Utilizes internal charge pump technology to derive standard RS-232 voltages from a single low-voltage supply
• Includes robust electrostatic discharge protection rated at 15 kV on all signal pins

Applications

• Connecting microcontrollers to personal computers via RS-232 ports
• Industrial control systems requiring reliable serial data transmission
• Embedded devices needing isolated serial communication interfaces

Procurement Notes

Verify the specific suffix 'E4' against the manufacturer's current datasheet to confirm compliance with RoHS directives and lead-free manufacturing standards. Ensure the SSOP-16 package dimensions match the target PCB footprint requirements. Confirm the commercial temperature grade (0°C to +70°C) aligns with the operational environment constraints before finalizing procurement specifications.

Selection Notes

Select this component when a dual-channel RS-232 transceiver is required for 3.3 V or 5 V systems without negative voltage availability. It is suitable for applications prioritizing moderate data rates up to 250 kb/s over longer distances compared to TTL. Consider the SSOP-16 package if space-constrained surface-mount assembly is necessary. Verify that the commercial temperature range meets the environmental conditions of the intended deployment.

Part Context

This part belongs to the MAX3232 family of low-power RS-232 transceivers designed for portable and battery-operated equipment. The 'C' designation indicates a commercial temperature range, while 'DBE4' specifies the SSOP-16 package and lead-free/RoHS-compliant construction. This variant serves as a direct replacement for older non-RoHS versions within the same functional family.

Replacement Considerations

The TRS3232 series offers pin-compatible alternatives with potentially improved performance characteristics. Other MAX3232 variants with different packages such as SOIC or TSSOP provide mechanical flexibility. Verify electrical compatibility and package dimensions when substituting with equivalent parts from other manufacturers.