MAX3222IDBRE4

Overview

The MAX3222IDBRE4 is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It operates from a single 3-V to 5.5-V supply and includes two drivers and two receivers for full-duplex communication. The device features a shutdown mode that reduces power consumption to less than 1 µA. It supports data rates up to 500 kb/s and provides ±15-kV ESD protection on RS-232 lines. The component is housed in a 20-pin TSSOP package and is rated for operation over the industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated charge pump eliminates the need for external voltage sources
• Shutdown pin enables low-power standby operation with minimal current draw
• Robust electrostatic discharge protection ensures signal integrity in harsh environments

Applications

• Industrial control systems requiring reliable serial communication
• Portable battery-powered equipment due to low power consumption
• Modems and fax machines utilizing standard RS-232 protocols

Procurement Notes

Verify the specific suffix 'E4' indicates lead-free composition and RoHS compliance as per Texas Instruments standards. Confirm the package type matches the design requirements, as variations exist within the MAX3222 family. Check current availability status, as some variants may be discontinued or subject to long lead times. Ensure the operating temperature range aligns with the intended application environment.

Selection Notes

Select this component when a dual-channel RS-232 transceiver with low quiescent current is required. Compare against the MAX3222IDBR if lead-free certification is not mandatory. Consider the MAX3222EIDW for alternative packaging options like SOIC. Verify that the 500 kb/s data rate meets the system's speed requirements. Ensure the 20-pin TSSOP footprint fits the PCB layout constraints.

Part Context

This part belongs to the MAX3222 series of multichannel RS-232 transceivers. It shares functional similarities with other members like the MAX3222IDBR but differs in packaging and environmental compliance attributes. The 'E4' suffix typically denotes an enhanced version or specific manufacturing lot characteristics defined by the manufacturer. It is designed to replace older discrete RS-232 solutions in compact designs.

Replacement Considerations

The MAX3222IDBR is a direct functional substitute without the E4 suffix. The MAX3222ECPWR offers a similar feature set in a TSSOP package. Verify pin compatibility before swapping with any alternative RS-232 transceivers.