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ISO7221C Status: ACTIVE

Dual Channel, 1/1, 25Mbps Digital Isolator

      
         
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Datasheet

Download - PDF Icon
  • DUAL DIGITAL ISOLATORS (Rev. I) (iso7221c.pdf, 847 KB)
    12 Dec 2008 Download

 ISO7220A ISO7220C ISO7220M ISO7221A ISO7221CISO7221M 
Number of Channels2  2  2  2  2  2  
Channel Configuration2/0  2/0  2/0  1/1  1/1  1/1  
Insulation Rating(VRMS)2500  2500  2500  2500  2500  2500  
Supply Voltage(s)(V)3.3, 5  3.3, 5  3.3, 5  3.3, 5  3.3, 5  3.3, 5  
Datarate(Mbps)1  25  150  1  25  150  
Input Noise FilterYes  Yes  None  Yes  Yes  None  
Prop Delay(Max)(ns)475  42  16  475  42  16  
TTL/CMOS Input ThresholdTTL  TTL  CMOS  TTL  TTL  CMOS  
FootprintADuM1200  ADuM1200  ADuM1200  ADuM1201  ADuM1201  ADuM1201  
RatingCatalog  Catalog  Catalog  Catalog  Catalog  Catalog  
Operating Temp Range(Celsius)-40 to 125  -40 to 125  -40 to 125  -40 to 125  -40 to 125  -40 to 125  
Approx. Price (US$) 1.20 | 100u   2.50 | 100u   3.15 | 100u   1.20 | 100u   2.50 | 100u   3.15 | 100u  
Pin/Package8SOIC  8SOIC  8SOIC  8SOIC  8SOIC  8SOIC  
Thermal ShutdownNo  No  No  No  No  No  
 SamplesSamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • ISO7221M: Dual Channel, 1/1, 150Mbps Digital Isolator
  • ISO721: Single 100Mbps Digital Isolator
  • INA159: High-Speed, Precision Gain of 0.2 Level Translation Difference Amplifier
  • REF3330: 30ppm/C Drift, 3.9uA, SOT23-3, SC70-3 Voltage Refrence
  • OPA4350: High-Speed, Single-Supply, Rail-to-Rail Operational Amplifiers MicroAmplifier(TM) Series

Product Information

Features

  • 1, 5, 25, and 150-Mbps Signaling Rate Options
    • Low Channel-to-Channel Output Skew; 1 ns max
    • Low Pulse-Width Distortion (PWD); 1 ns max
    • Low Jitter Content; 1 ns Typ at 150 Mbps
  • Typical 25-Year Life at Rated Voltage
    (see app. note SLLA197 and Figure 20)
  • 4000-Vpeak Isolation, 560 Vpeak VIORM
    • UL 1577, IEC 60747-5-2 (VDE 0884, Rev 2),
      IEC 61010-1, IEC 60950-1 and CSA Approved
    • 50 kV/µs Typical Transient Immunity
  • Operates with 3.3-V or 5-V Supplies
  • 4 kV ESD Protection
  • High Electromagnetic Immunity
  • -40°C to 125°C Operating Range
  • APPLICATIONS
    • Industrial Fieldbus
      • Modbus
      • Profibus™
      • DeviceNet Data Buses
    • Computer Peripheral Interface
    • Servo Control Interface
    • Data Acquisition

Description

The ISO7220 and ISO7221 are dual-channel digital isolators. To facilitate PCB layout, the channels are oriented in the same direction inthe ISO7220 and in opposite directions in the ISO7221. These devices have a logic input and output buffer separated by TI's silicon-dioxide (SiO2) isolation barrier, providing galvanic isolation of up to 4000 V. Used in conjunction with isolated power supplies, these devices block high voltage, isolate grounds, and prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry.

A binary input signal is conditioned, translated to a balanced signal, then differentiated by the capacitive isolation barrier. Across the isolation barrier, a differential comparator receives the logic transition information, then sets or resets a flip-flop and the output circuit accordingly. A periodic update pulse is sent across the barrier to ensure the proper dc level of the output. If this dc-refresh pulse is not received every 4 µs, the input is assumed to be unpowered or not being actively driven, and the failsafe circuit drives the output to a logic high state.

The small capacitance and resulting time constant provide fast operation with signaling rates available from 0 Mbps (dc) to 150 Mbps. (1) The A-, B- and C-option devices have TTL input thresholds and a noise filter at the input that prevents transient pulses from being passed to the output of the device. The M-option devices have CMOS VCC/2 input thresholds and do not have the input noise-filter and the additional propagation delay.

These devices require two supply voltages of 3.3 V, 5 V, or any combination. All inputs are 5-V tolerant when supplied from a 3.3-V supply and all outputs are 4-mA CMOS.

These devices are characterized for operation over the ambient temperature range of -40°C to 125°C.

(1)The signaling rate of a line is the number of voltage transitions that are made per second expressed in the units bps (bits per second).

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
ISO7221CDACTIVE-40 to 1252.50 | 100uSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
ISO7221CDG4ACTIVE-40 to 1252.50 | 100uSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
ISO7221CDRACTIVE-40 to 1252.50 | 100uSOIC (D) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
ISO7221CDRG4ACTIVE-40 to 1252.50 | 100uSOIC (D) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this Footprint

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

  TI Inventory Status Reported Distributor Inventory
ISO7221CDAs of 10:03 AM GMT, 09 Jan 2009As of 10:03 AM GMT, 09 Jan 2009
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0*  8 Weeks AmericasMouser Electronics 10
  AsiaWPI 19
ISO7221CDG4As of 10:03 AM GMT, 09 Jan 2009As of 10:03 AM GMT, 09 Jan 2009
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* 8 WeeksNone Reported
View Distributors		   
ISO7221CDRAs of 10:03 AM GMT, 09 Jan 2009As of 10:03 AM GMT, 09 Jan 2009
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0*  8 Weeks AmericasNewark 918
  AsiaWPI >1k
ISO7221CDRG4As of 10:03 AM GMT, 09 Jan 2009As of 10:03 AM GMT, 09 Jan 2009
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* 8 WeeksNone Reported
View Distributors		   
View all Distributors  

* Our information is updated daily, so please check back with us soon if this does not meet your needs. You may also contact your TI Authorized Distributor , including those listed above, for real time stock information.

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

 Product ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
ISO7221CD RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
ISO7221CDG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
ISO7221CDR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
ISO7221CDRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Datasheets

  • DUAL DIGITAL ISOLATORS (Rev. I) (iso7221c.pdf, 847 KB)
    12 Dec 2008 Download

Application Notes

  • Shelf-Life Evaluation of Lead-Free Component Finishes (szza046.htm, 8 KB)
    24 May 2004 Abstract
  • Thermal and Electrical Properties of Selected Packaging Materials (sbfa010.htm, 8 KB)
    04 Oct 2000 Abstract

View Application Notes for Isolators

Simulation Models

  • IBIS Model
    • ISO7221_3 IBIS Model (Rev. A) (sllc316a.zip, 7 KB)
      15 Dec 2008 zip
    • ISO7221_35 IBIS Model (Rev. A) (sllc317a.zip, 13 KB)
      15 Dec 2008 zip
    • ISO7221_5 IBIS Model (Rev. A) (sllc318a.zip, 7 KB)
      15 Dec 2008 zip
    • ISO7221_53 IBIS Model (Rev. A) (sllc319a.zip, 13 KB)
      15 Dec 2008 zip
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