MAX3225ECUP

Overview

The MAX3225ECUP+ is a full-duplex RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 3.0 V to 5.5 V and supports data rates up to 1 Mbps. The device integrates two drivers and two receivers in a TSSOP-20 surface-mount package. It features 15 kV ESD protection on all RS-232 ports, ensuring robust performance in harsh environments. The component is RoHS compliant and designed for applications requiring reliable serial communication with low power consumption and high noise immunity.

Feature Summary

• Integrates two independent drivers and two receivers for full-duplex RS-232 communication
• Provides 15 kV human-body model ESD protection on transmit and receive lines
• Features AutoShutdown circuitry that automatically places the receiver in a high-impedance state when the driver is disabled or power is removed
• Operates from a single 3.0 V to 5.5 V power supply with integrated charge pumps

Applications

• Industrial control systems requiring robust serial communication
• Portable instrumentation and medical devices
• Modems and fax machines
• Personal computers and peripheral equipment

Procurement Notes

Verify the exact suffix against the manufacturer's current datasheet, as suffixes indicate temperature range and packaging. Confirm RoHS compliance status directly with the supplier. Check for obsolescence notices or PCNs from Analog Devices. Ensure the TSSOP-20 footprint matches your PCB design requirements. Validate lead times and availability through authorized distributors only.

Selection Notes

Select this component when full-duplex RS-232 communication is required with high ESD tolerance. Compare pinout compatibility with existing designs if replacing older versions. Consider the TSSOP-20 package size constraints for your application. Verify that the 1 Mbps data rate meets your system's speed requirements. Ensure the 3.0 V to 5.5 V operating voltage aligns with your system's power supply rails.

Part Context

The MAX3225 belongs to the Maxim Integrated MAX322x family of RS-232 transceivers. This series is known for its low power consumption and ease of use with single-supply operation. The ECUP variant specifically denotes the industrial temperature range and TSSOP-20 packaging. It is widely used in embedded systems where space and power efficiency are critical factors.

Replacement Considerations

Direct pin-to-pin replacements include other MAX3225 variants with different suffixes for temperature or packaging. Cross-reference with MAX3232 or MAX3243 if additional drivers/receivers are needed, but verify pin compatibility. Always consult the latest datasheets for electrical parameter differences before substitution.