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MAX3221 - +3V to +5.5V RS-232 Transceivers

General Description

The MAX3221/MAX3223/MAX3243 achieve 1µA supply current with Maxim’s revolutionary AutoShutdown™ feature.

When the MAX3221/MAX3223/MAX3243 do not sense a valid signal level on their receiver inputs, the onboard power supply and drivers shut down.

Key Features

  • Integrated Charge Pump Circuitry Simplifies Power Requirements.
  • Eliminates the Need for a ±12 Supply.
  • Operation From a Single +3.3V or +5V Supply.
  • 1µA Supply Current in Shutdown Mode Saves Power.
  • AutoShutdown Feature is Enabled After No Activity on Receiver Inputs for 30µs.
  • Software Control Option for Shutdown Ordering Information PART TEMP RANGE PIN-.

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📁 Similar Datasheet

Part Number Description Manufacturer
MAX3221 3-V to 5.5-V RS-232 Line Driver/Receiver Texas Instruments
MAX3221-EP 3-V TO 5.5-V SINGLE-CHANNEL RS-232 LINE DRIVER/RECEIVER Texas Instruments
MAX3221E 3-V to 5.5-V Single-Channel RS-232 Line Driver/Receiver Texas Instruments
MAX3222 3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver Texas Instruments
MAX3222E 3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER Texas Instruments

Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
MAX3221E RS-232 Transceivers
MAX322 Precision / Dual-Supply / SPST Analog Switches
MAX3222 True RS-232 Transceivers
MAX3222E True RS-232 Transceivers
MAX3223 +3V to +5.5V RS-232 Transceivers

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Click here for production status of specific part numbers. MAX3221/MAX3223/ MAX3243 +3V to +5.5V RS-232 Transceivers with AutoShutdown General Description The MAX3221/MAX3223/MAX3243 achieve 1µA supply current with Maxim’s revolutionary AutoShutdown™ feature. When the MAX3221/MAX3223/MAX3243 do not sense a valid signal level on their receiver inputs, the onboard power supply and drivers shut down. This occurs if the RS-232 cable is disconnected or if the transmitters of the connected peripheral are turned off. The system turns on again when a valid level is applied to any RS-232 receiver input. The MAX3221/MAX3223/MAX3243 require only 0.1µF capacitors in 3.3V operation, and can operate from input voltages ranging from +3.0V to +5.5V.