MAX3222IDW

Overview

The MAX3222IDW is a multichannel 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 logic systems. The device features two drivers and two receivers, providing full-duplex communication with a data rate capability of 500 kb/s. It is housed in a 20-pin SOIC package and includes a shutdown feature for power management. The component draws a typical operating supply current of 1 mA and offers ESD protection rated at 15 kV. It functions reliably across an extended temperature range from -40°C to +85°C.

Feature Summary

• Integrated dual-channel transceiver for RS-232 communication
• Low-power operation with dedicated shutdown control
• Robust electrostatic discharge protection capabilities

Applications

• Industrial control systems requiring serial communication
• Portable instrumentation and battery-powered devices
• Modems and communications equipment

Procurement Notes

Verify the specific suffix 'IDW' to confirm the SOIC-20 package and industrial temperature grade. Confirm RoHS compliance status through official documentation. Check for end-of-life notifications as discontinuation affects long-term availability. Ensure sourcing channels provide genuine components to avoid counterfeit risks.

Selection Notes

Select this component when a dual-driver RS-232 interface is required for 3-V or 5-V systems. Compare against the MAX3222E variant if enhanced ESD protection is necessary. Consider the MAX3232 series if higher data rates are needed. Verify pin compatibility with existing PCB layouts before substitution.

Part Context

This part belongs to the MAX3222 family of multichannel RS-232 transceivers. It shares functional similarities with the MAX3222E but differs in ESD specifications. The IDW suffix denotes the plastic small-outline package variant. It serves as a standard interface solution for legacy serial ports in modern embedded designs.

Replacement Considerations

The MAX3222EIDW is a related variant with different ESD ratings. The MAX3222IDWR offers the same functionality in a tape-and-reel package. Verify pinout compatibility before replacing with these alternatives.