MAX3227CDBG4

Overview

The MAX3227CDBG4 is a single-channel RS-232 line driver and receiver manufactured by Texas Instruments. It operates from a 3-V to 5.5-V power supply and supports data rates up to 120 kbps. The device features ±15-kV ESD protection on both the transmitter input and receiver output, ensuring robust performance in harsh environments. It utilizes small external 0.1-µF capacitors for charge pump functionality. The component is housed in an 8-pin VSSOP package and is rated for operation over the commercial temperature range of 0°C to +70°C.

Feature Summary

• Integrated ±15-kV ESD protection on inputs and outputs
• Single-channel full-duplex RS-232 communication
• Low external capacitance requirement for charge pumps

Applications

• Portable battery-powered equipment requiring low current consumption
• Industrial control systems with high ESD exposure risks
• Modems and handheld terminals

Procurement Notes

Verify the suffix 'G4' indicates lead-free and RoHS compliance per Texas Instruments standards. Confirm the 'C' designation aligns with the required commercial operating temperature range. Ensure the VSSOP-8 package dimensions match the target PCB footprint constraints before finalizing procurement orders.

Selection Notes

Select this component when a single channel is sufficient for bidirectional serial communication. It is suitable for applications where moderate data speeds are acceptable but high ESD immunity is critical. Compare against higher-speed variants if throughput requirements exceed 120 kbps or if additional channels are necessary for complex system architectures.

Part Context

This part belongs to the MAX322x family of multichannel RS-232 transceivers designed for low-power applications. The MAX3227CDBG4 specifically provides a single driver and receiver configuration. It serves as a bridge between microprocessor UART signals and RS-232 voltage levels, facilitating reliable data transmission in compact electronic designs.

Replacement Considerations

Direct functional equivalents include the MAX3227IDB and MAX3227EIDB. Verify that alternative packages such as SOIC or TSSOP meet mechanical space requirements. Ensure replacement parts maintain the same voltage range and ESD protection specifications.