1. Products
  2. Interface and Isolation
  3. RS-232 / RS-422 / RS-485 / RS-562
  4. RS-232 and RS-562
  5. ADM232A


Features and Benefits

  • 200 kB/s transmission rate
  • Small (0.1 μF) charge pump capacitors
  • Single 5 V power supply
  • Meets all EIA-232-E and V.28 specifications
  • Two drivers and two receivers
  • On-board DC-DC converters
  • 9 V output swing with 5 V supply
  • 30 V receiver input levels
  • Pin compatible with MAX222/MAX232A/MAX242

Product Details

The ADM222, ADM232A, ADM242 are a family of high-speed RS-232 line drivers/receivers offering transmission rates up to 200 kB/s. Operating from a single 5 V power supply, a highly efficient on-chip charge pump using small (0.1 µF) external capacitors allows RS-232 bipolar levels to be developed. Two RS-232 drivers and two RS-232 receivers are provided on each device.

The devices are fabricated on BiCMOS, an advanced mixed technology process that combines low power CMOS with highspeed bipolar circuitry. This allows for transmission rates up to 200 kB/s, yet minimizes the quiescent power supply current to under 5 mA.

The ADM232A is a pin-compatible, high-speed upgrade for the AD232 and for the ADM232L. It is available in 16-lead DIP and in both narrow and wide surface-mount (SOIC) packages.

The ADM222 contains an additional shutdown (SHDN) function that may be used to disable the device, thereby reducing the supply current to 0.1 µA. During shutdown, all transmit/receive functions are disabled. The ADM222 is available in 18-lead DIP and in a wide surface-mount (SOIC) package.

The ADM242 combines both shutdown (SHDN) and enable (EN) functions. The shutdown function reduces the supply current to 0.1 mA. During shutdown, the transmitters are disabled but the receivers continue to operate normally. The enable function allows the receiver outputs to be disabled thereby facilitating sharing a common bus. The ADM242 is available in 18-lead DIP and in a wide surface-mount (SOIC) package.


  • Computers
  • Peripherals
  • Modems
  • Printers
  • Instruments

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
ADM232AANZ Material Declaration Reliability Data 16-Lead PDIP
ADM232AARN-REEL Material Declaration Reliability Data 16-Lead SOIC
ADM232AARNZ Material Declaration Reliability Data 16-Lead SOIC
ADM232AARNZ-REEL Material Declaration Reliability Data 16-Lead SOIC
ADM232AARNZ-REEL7 Material Declaration Reliability Data 16-Lead SOIC
ADM232AARWZ Material Declaration Reliability Data 16-Lead SOIC Wide
ADM232AARWZ-REEL Material Declaration Reliability Data 16-Lead SOIC Wide
Wafer Fabrication Data

PCN-PDN Information

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Sample & Buy

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Buy Now Pricing

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List Pricing

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Lead Times

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