1. Products
  2. Interface and Isolation
  3. RS-232 / RS-422 / RS-485 / RS-562
  4. RS-232 and RS-562
  5. AD7306


Features and Benefits

  • RS-232 and RS-422 on One Chip
  • Single +5 V Supply
  • 0.1 mF Capacitors
  • Short Circuit Protection
  • Excellent Noise Immunity
  • Low Power BiCMOS Technology
  • High Speed, Low Skew RS-422 Operation
  • -40 to 85°C

Product Details

The AD7306 line driver/receiver is a 5 V monolithic product which provides an interface between TTL signal levels and dual standard EIA RS-232/RS-422 signal levels. The part contains two RS-232 drivers, one RS-422 driver, one RS-232 receiver, and one receiver path which can be configured either as RS-232 or as RS-422.

An internal charge pump voltage converter facilitates operation from a single +5 V power supply. The internal charge pump generates ±10 V levels allowing RS-232 output levels to be developed without the need for external bipolar power supplies.

A highly efficient charge pump design allows operation using non polarized, miniature 0.1 mF capacitors. This gives a considerable saving in printed circuit board space over conventional products which can use up to 10 mF capacitors. The charge pump output voltages may also be used to power external circuitry which requires dual supplies.

The RS-232 channels are suitable for communications rates up to 100 kHz and the RS-422 channels are suitable for high speed communications up to 5 MHz. The RS-422 transmitter complementary outputs are closely matched and feature low timing skew between the complementary outputs. This is often an essential requirement to meet tight system timing specifications.

All inputs feature ESD protection, all driver outputs feature high source and sink current capability and are internally protected against short circuits on the outputs. An epitaxial layer is used to guard against latch-up.

The part is available in a 24-lead SOIC and 24-pin plastic DIP package.


  • DTE-DCE Interface
  • Packet Switching
  • Local Area Networks
  • Data Concentration
  • Data Multiplexers
  • Integrated Services Digital Network (ISDN)

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
AD7306ANZ Material Declaration Reliability Data 24-Lead PDIP
AD7306AR Material Declaration Reliability Data 24-Lead SOIC (Wide)
AD7306ARZ Material Declaration Reliability Data 24-Lead SOIC (Wide)
AD7306JNZ Material Declaration Reliability Data 24-Lead PDIP
AD7306JRZ Material Declaration Reliability Data 24-Lead SOIC (Wide)
AD7306JRZ-REEL Material Declaration Reliability Data 24-Lead SOIC (Wide)
Wafer Fabrication Data

PCN-PDN Information

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Sample & Buy

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Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



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