MAX3221ECPW

Overview

The MAX3221ECPW is a single-channel RS-232 transceiver manufactured by Texas Instruments, designed for full-duplex communication. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 250 kbps. The device features one driver and one receiver housed in a TSSOP-20 package. It includes integrated charge pumps that require only external 0.1 µF capacitors. The component provides ESD protection rated at 15 kV according to the Human Body Model. It functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Single-channel RS-232 line driver and receiver configuration
• Integrated charge pump requiring minimal external capacitance
• High electrostatic discharge protection capability
• Low power consumption with shutdown mode functionality

Applications

• Industrial control systems requiring serial communication
• Portable battery-powered equipment due to low current draw
• Modems and fax machines utilizing RS-232 protocols
• Point-of-sale terminals and medical instrumentation

Procurement Notes

Verify the specific suffix 'CPW' indicates the TSSOP-20 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor certificates. Ensure the ordering part number matches the required temperature grade and packaging format to avoid integration errors during procurement.

Selection Notes

Select this component for applications requiring a single full-duplex RS-232 channel with low standby current. Compare against the SN75C3221PWR if a TSSOP-16 package is preferred instead of the TSSOP-20 form factor. Consider the MAX3221IDBR for SSOP-16 packaging requirements. Verify that the 250 kbps data rate meets the system's throughput needs before finalizing the design.

Part Context

This part belongs to the MAX3221 family of single-channel RS-232 transceivers. It shares core electrical specifications with variants like the MAX3221IPWR and MAX3221IDBR, differing primarily in package type and temperature rating. The 'E' designation typically denotes an extended industrial temperature range. It serves as a standard interface solution for legacy serial communication links in modern embedded designs.

Replacement Considerations

• MAX3221IDBR
• MAX3221IPWR
• SN75C3221PWR

FAQ

What is the maximum data rate supported by the MAX3221ECPW?

The device supports data rates up to 250 kbps.

Does the MAX3221ECPW include a shutdown feature?

Yes, the component includes a shutdown mode to minimize power consumption during idle periods.

What package type does the MAX3221ECPW use?

It utilizes a 20-pin Thin Shrink Small Outline Package (TSSOP).