MAX3222EIDBR

Overview

The MAX3222EIDBR 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 for full-duplex communication with a data rate up to 500 kb/s. It includes a shutdown mode that reduces power consumption to approximately 1 mA. The component provides ±15 kV electrostatic discharge (ESD) protection on RS-232 lines and is housed in a 20-pin SSOP package suitable for surface mount applications.

Feature Summary

• Integrated ESD protection rated at ±15 kV for robust signal integrity
• Low-power shutdown mode for extended battery life in portable devices
• Single capacitor design simplifies external component requirements

Applications

• Portable computers and notebook systems
• Handheld terminals and mobile communication devices
• Industrial control panels requiring reliable serial communication

Procurement Notes

Verify the specific suffix 'IDBR' to confirm the industrial temperature grade (-40°C to +85°C) and SSOP-20 tape-and-reel packaging. Confirm RoHS compliance status through the manufacturer's latest documentation, as environmental declarations may vary by production batch. Ensure the source is an authorized distributor to guarantee authenticity.

Selection Notes

Select this component when a dual-channel RS-232 interface is required with low standby current capabilities. Compare against the MAX3222EIDW if a SOIC-20 package is preferred over the SSOP-20 form factor. Verify that the system's operating voltage falls within the 3 V to 5.5 V range and that the 500 kb/s data rate meets the application's throughput needs.

Part Context

This part belongs to the MAX3222 family of True RS-232 transceivers designed for low-voltage operation. It serves as a functional equivalent to older 5 V-only RS-232 chips but offers improved power efficiency. The 'E' designation indicates enhanced ESD protection, while 'I' denotes the industrial temperature range, distinguishing it from commercial grade variants.

Replacement Considerations

The MAX3222EIDW is a pin-compatible alternative in a different package. The TRS3222EIDBR is a Texas Instruments rebranded version with identical specifications. Verify pinout compatibility before substituting any third-party generic RS-232 transceivers.