MAX3225EETP

Overview

The MAX3225EETP is a dual RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, designed for full-duplex communication. It operates within a supply voltage range of 3.0V to 5.5V and supports data rates up to 1Mbps. The device features an operating supply current of 1mA and includes AutoShutdown Plus functionality to reduce power consumption during idle periods. It provides 15kV ESD protection on all pins and utilizes small external capacitors. The component is housed in a TSSOP-20 package with an exposed pad for thermal management.

Feature Summary

• AutoShutdown Plus technology automatically reduces power consumption when the RS-232 bus is idle or the driver is disabled
• Integrated charge pump circuitry requires only four small 0.1µF external capacitors for operation
• Robust electrostatic discharge protection rated at 15kV on all pins according to the Human Body Model standard

Applications

• Portable computers and notebook systems requiring low-power serial communication
• Handheld devices and PDAs utilizing battery-powered RS-232 interfaces
• Industrial control systems needing reliable full-duplex data transmission in electrically noisy environments

Procurement Notes

Verify the specific suffix 'EETP' against official manufacturer documentation to confirm the TSSOP-20 package type and commercial temperature range specifications. Ensure compatibility with system voltage requirements between 3.0V and 5.5V before procurement. Cross-reference the RoHS status and lead-free designation with current datasheets to meet regulatory compliance standards for the target assembly process.

Selection Notes

Select this component when a dual-channel RS-232 interface is required with minimal external capacitance and low standby power. It is suitable for applications where space constraints favor surface-mount packaging over through-hole alternatives. Consider the 1Mbps data rate limit and 1mA quiescent current as primary selection criteria for battery-operated portable electronics.

Part Context

This part belongs to the MAX3225 family of RS-232 transceivers known for their low-power operation and ease of use. The MAX3225 series is widely used in legacy serial communication interfaces within modern embedded systems. The EETP variant specifically denotes the thin-shrink small-outline package configuration optimized for high-density PCB layouts.

Replacement Considerations

Direct pin-compatible substitutes include other members of the MAX3225 family such as the MAX3225EEUP for TSSOP-20 packages. Verify that alternative components maintain the same 1Mbps data rate and 15kV ESD protection levels to ensure functional equivalence in existing designs.