MAX3223ECPW

Overview

The MAX3223ECPW is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It operates from a single 3 V to 5.5 V supply and features two drivers and two receivers for full-duplex communication. The device supports data rates up to 500 kb/s with a typical propagation delay of 150 ns. It includes an auto-powerdown mode that reduces supply current to approximately 1 µA during shutdown. The component provides ±15 kV electrostatic discharge (ESD) protection on both the transmitter inputs and receiver outputs, ensuring robust performance in harsh environments. It is housed in a TSSOP-20 package.

Feature Summary

• Integrated auto-powerdown functionality significantly reduces power consumption when the device is not actively transmitting or receiving data.
• Built-in ESD protection safeguards sensitive circuitry against high-voltage static discharge events on all signal lines.
• Capacitor-free design utilizes internal charge pumps to generate the required voltages for RS-232 signaling without external components.

Applications

• Portable equipment requiring low power consumption and reliable serial communication
• Industrial control systems needing robust ESD protection
• Modems and fax machines utilizing standard RS-232 interfaces

Procurement Notes

Verify the specific suffix 'CPW' corresponds to the TSSOP-20 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation, as environmental declarations may vary by production batch. Ensure the supplier provides valid traceability records for quality assurance purposes.

Selection Notes

Select this component when a dual-channel RS-232 transceiver with integrated ESD protection and low standby current is required. Compare against the MAX3223IDBR for SSOP-20 packaging options if space constraints differ. Consider the TRS3223E series for alternative pinouts or extended temperature ranges if necessary.

Part Context

This part belongs to the MAX3223 family of multichannel RS-232 transceivers designed for 3-V to 5.5-V applications. It serves as a direct replacement for older 5-V only RS-232 chips while offering improved power efficiency. The device is widely used in embedded systems where serial connectivity is essential.

Replacement Considerations

MAX3223EIDBR offers identical electrical specifications but uses an SSOP-20 package instead of TSSOP-20. Verify footprint compatibility before substitution. Other family members like MAX3223EIPW provide similar functionality in different package styles.