MAX3221IDBR

Overview

The MAX3221IDBR is a single-channel RS-232 transceiver manufactured by Texas Instruments, designed for full-duplex communication. It operates within a supply voltage range of 3V to 5.5V and supports data rates up to 250kbps. The device features a receiver hysteresis of 500mV and functions reliably across an industrial temperature range of -40°C to +85°C. Packaged in a 16-pin SSOP with a width of 5.30mm, it integrates driver and receiver circuits on a single chip. The component complies with RoHS3 standards and carries an MSL rating of 1.

Feature Summary

• Integrates a single driver and receiver for full-duplex RS-232 signaling
• Operates efficiently on a single 3V to 5.5V power supply
• Provides robust signal integrity with 500mV receiver hysteresis
• Supports high-speed data transmission up to 250kbps

Applications

• Industrial equipment requiring serial communication interfaces
• Portable battery-powered devices utilizing low-voltage operation
• Modems and facsimile machines implementing RS-232 protocols
• Point-of-sale terminals and medical instrumentation

Procurement Notes

Verify the specific suffix IDBR confirms the SSOP-16 package and industrial temperature grade during sourcing. Confirm RoHS3 compliance status matches current regulatory requirements. Check manufacturer documentation for any recent product change notices affecting assembly sites or marking changes. Ensure compatibility with standard surface-mount reflow profiles for the specified package type.

Selection Notes

Select this component when a single full-duplex channel is sufficient for the design. Compare against the TRSF3221EIDBR if higher data rates near 1Mbps are required. Consider the MAX3221IPWR variant if a TSSOP-16 package is preferred for board layout constraints. Verify that the 250kbps speed meets the system's timing requirements.

Part Context

This part belongs to the MAX3221 family of single-channel RS-232 transceivers. It shares functional similarities with other members like the MAX3221CPW but differs in packaging and temperature specifications. The IDBR suffix specifically denotes the industrial grade and SSOP form factor, distinguishing it from commercial variants or alternative packages within the same series.

Replacement Considerations

The TRSF3221EIDBR serves as a parameter-equivalent substitute offering higher data rates. The MAX3221IPWR provides a pin-compatible alternative using a TSSOP-16 package. Verify electrical characteristics and physical dimensions before substituting.