MAX3228E

±15kV ESD-Protected +2.5V to +5.5V RS-232 Transceivers in UCSP and WLP


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Description

The MAX3228E/AE and MAX3229E/AE are +2.5V to +5.5V powered EIA/TIA-232 and V.28/V.24 communications interfaces with low power requirements, high datarate capabilities, and enhanced electrostatic discharge (ESD) protection, in a chip-scale package (UCSP™) and WLP Package. All transmitter outputs and receiver inputs are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge, ±8kV using IEC 1000-4-2 Contact Discharge, and ±15kV using the Human Body Model.

The MAX3228E/AE and MAX3229E/AE achieve a 1µA supply current with Maxim’s AutoShutdown™ feature. They save power without changes to existing BIOS or operating systems by entering low-power shutdown mode when the RS-232 cable is disconnected, or when the transmitters of the connected peripherals are off.

The transceivers have a proprietary low-dropout transmitter output stage, delivering RS-232 compliant performance from a +3.1V to +5.5V supply, and RS-232 compatible performance with a supply voltage as low as +2.5V. The dual charge pump requires only four small 0.1µF capacitors for operation from a +3.0V supply. Each device is guaranteed to run at data rates of 250kbps while maintaining RS-232 output levels.

The MAX3228E/AE and MAX3229E/AE offer a separate power-supply input for the logic interface, allowing configurable logic levels on the receiver outputs and transmitter inputs. Operating over a +1.65V to VCC range, VL provides the MAX3228E/AE and MAX3229E/AE compatibility with multiple logic families.

The MAX3229E/AE contains one receiver and one transmitter. The MAX3228E/AE contains two receivers and two transmitters. The MAX3228E/AE and MAX3229E/AE are available in tiny chip-scale and WLP packaging and are specified across the extended industrial temperature range of -40°C to +85°C.
MAX3228E, MAX3229E: Typical Operating Circuit MAX3228E, MAX3229E: Typical Operating Circuit Enlarge+

Key Features

  • 6 × 5 Chip-Scale Package (UCSP) and WLP Package
  • ESD Protection for RS-232 I/O Pins:
    • ±15kV—IEC 1000-4-2 Air-Gap Discharge
    • ±8kV—IEC 1000-4-2 Contact Discharge
    • ±15kV—Human Body Model
  • 1µA Low-Power AutoShutdown
  • 250kbps Guaranteed Data Rate
  • Meets EIA/TIA-232 Specifications Down to +3.1V
  • RS-232 Compatible to +2.5V Allows Operation from Single Li+ Cell
  • Small 0.1µF Capacitors
  • Configurable Logic Levels

Applications/Uses

  • Cell Phone Data Lump Cables
  • Cell Phones
  • Handheld Devices
  • Personal Digital Assistants (PDAs)
  • Set-Top Boxes

Technical Documents

Tutorial 2141 Determining Clock Accuracy Requirements for UART Communications
Tutorial 1834 Lower the Supply Current in Your RS-232 System

Quality and Environmental Data

Product Reliability Reports: MAX3228E.pdf 
Lead-Free Package Tin (Sn) Whisker Reports
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >

 
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Belle Isle 2020
05/29/2020 - 05/31/2020, Detroit, MI
2020 Detroit Grand Prix - Chevrolet Detroit Grand Prix presented by Lear Fast Facts The Chevrolet Detroit Grand Prix presented by Lear was hosted on Belle Isle, May 29 - 30 2020. The event featured the cars of the NTT IndyCar Series, the IMSA WeatherTech SportsCar Championship and the Trans Am Series presented by Pirelli. The weekend is collectively referred to as the Chevrolet Detroit Grand Prix presented by Lear and it once again featured the Chevrolet Dual in Detroit IndyCar doubleheader.

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