MAX3222IPWR

Overview

The MAX3222IPWR is a dual-channel RS-232 line driver and receiver manufactured by Texas Instruments. It operates within a supply voltage range of 3 V to 5.5 V, supporting both 3.3-V and 5-V systems. The device features two drivers and two receivers with full-duplex communication capability at data rates up to 500 kb/s. It includes an integrated dual charge-pump circuit for internal voltage generation. Key electrical specifications include a maximum supply voltage of 5.5 V, minimum supply voltage of 3 V, and typical operating current of 1 mA. The component provides ±15-kV ESD protection on all pins and functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Integrates dual charge-pump circuitry for efficient internal voltage generation without external inductors
• Provides robust ±15-kV electrostatic discharge protection on all signal pins using Human-Body Model standards
• Supports full-duplex serial communication with independent drivers and receivers for reliable data transmission
• Features shutdown mode functionality to minimize power consumption during idle periods

Applications

• Industrial equipment requiring reliable serial communication interfaces
• Portable battery-powered instruments and devices
• Modems and fax machines utilizing RS-232 protocols
• Point-of-sale (POS) terminals and payment systems

Procurement Notes

Verify the specific suffix IPWR indicates the SOIC-20 surface-mount package variant when sourcing. Confirm that the component meets RoHS compliance requirements for your manufacturing process. Ensure the ordering quantity aligns with the tube packaging format typically associated with this part number. Cross-reference the manufacturer's latest datasheet revision to confirm pinout compatibility and electrical characteristics before finalizing procurement decisions.

Selection Notes

Select the MAX3222IPWR for applications requiring dual-channel RS-232 connectivity in space-constrained designs. This part is suitable for systems operating between 3 V and 5.5 V where low standby current is critical. Consider this component if ±15-kV ESD protection is required directly on the interface lines. Evaluate the SOIC-20 package dimensions against your PCB layout constraints to ensure proper thermal and mechanical fit.

Part Context

The MAX3222 series represents Texas Instruments' multichannel RS-232 transceivers designed for low-power applications. The IPWR suffix specifically denotes the plastic small-outline integral leadframe (SOIC) package with 20 pins. This family integrates charge pumps to eliminate the need for external inductors, simplifying board design compared to older generations. It serves as a direct replacement for legacy single-supply RS-232 solutions in modern embedded systems.

Replacement Considerations

The MAX3222EIDBR is a compatible alternative offering identical electrical performance in an SSOP-20 package. Verify pin-to-pin compatibility and package footprint differences when substituting. Ensure that any replacement maintains the required 500 kb/s data rate and ESD protection levels.