MAX3221EIDBR

Overview

The MAX3221EIDBR is a single-channel full-duplex RS-232 transceiver manufactured by Texas Instruments. It operates within a supply voltage range of 3V to 5.5V and supports data rates up to 1Mbps. The device features a receiver hysteresis of 500 mV for improved noise immunity. It is housed in a 16-SSOP package with a width of 5.30mm (0.209 inches). The component is rated for an operating temperature range from -40°C to +85°C. It complies with RoHS3 standards and has a Moisture Sensitivity Level (MSL) of 1, indicating unlimited exposure to ambient conditions.

Feature Summary

• Integrates one driver and one receiver for single-port RS-232 communication
• Provides enhanced noise rejection through 500 mV receiver hysteresis
• Supports high-speed data transmission at rates up to 1Mbps
• Operates reliably across industrial temperature ranges from -40°C to +85°C

Applications

• Industrial control systems requiring robust serial communication
• Embedded devices interfacing with RS-232 peripherals
• Data acquisition equipment in noisy environments
• Medical instrumentation with strict signal integrity requirements

Procurement Notes

Verify the specific suffix 'E' indicates extended temperature performance and compliance with RoHS3 directives. Confirm the 'IDBR' suffix corresponds to the 16-SSOP package and reel packaging format. Cross-reference the manufacturer part number with official Texas Instruments documentation to ensure authenticity and correct pinout configuration before integration into design schematics.

Selection Notes

Select this component when a single full-duplex channel is sufficient for the application. Compare against the MAX3221IDBR if lower data rates are acceptable or cost optimization is prioritized over the 1Mbps speed capability. Ensure the 16-SSOP footprint matches the PCB layout constraints. Verify that the 3V to 5.5V supply range aligns with the system power architecture.

Part Context

This device belongs to the TRSF3221/MAX3221 family of low-power RS-232 transceivers. It shares functional similarities with other single-channel variants but differs in speed specifications and temperature ratings compared to standard commercial grade parts. The E-series designation typically denotes extended industrial temperature capabilities and stricter manufacturing controls.

Replacement Considerations

The MAX3227EIDBR is listed as a parameter-equivalent substitute. Verify compatibility regarding package dimensions and electrical characteristics before substitution.