ISOW784x Digital Isolators

Texas Instruments offers the ISOW784x high-efficiency, low-emissions, reinforced digital isolators with integrated power

Image of Texas Instruments' ISOW784x Digital IsolatorsTexas Instruments' ISOW784x is a family of high-performance, quad-channel reinforced digital isolators with an integrated high-efficiency power converter. The integrated DC-DC converter provides up to 650 mW of isolated power at high efficiency and can be configured for various input and output voltage configurations. Therefore, these devices eliminate the need for a separate isolated power supply in space-constrained isolated designs.

The ISOW784x family of devices provide high electromagnetic immunity and low emissions while isolating CMOS or LVCMOS digital I/Os. The signal-isolation channel has a logic input and output buffer separated by a silicon dioxide (SiO2) insulation barrier, whereas, power isolation uses on-chip transformers separated by thin film polymer as insulating material. Various configurations of forward and reverse channels are available. If the input signal is lost, the default output is high for the ISOW784x devices and low for the devices with the F suffix.

These devices help prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry. Through innovative chip design and layout techniques, electromagnetic compatibility of the ISOW784x family of devices has been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance. The high-efficiency of the power converter allows operation at a higher ambient temperature. The ISOW784x family of devices is available in a 16-pin SOIC wide-body (SOIC-WB) DWE package.

Features
  • Integrated high-efficiency DC-DC converter with on-chip transformer
  • 3 V to 5.5 V wide input supply range
  • Regulated 5 V or 3.3 V output
  • Up to 0.65 W output power
  • 5 V to 5 V; 5 V to 3.3 V: available load current ≥ 130 mA
  • 3.3 V to 3.3 V: available load current ≥ 75 mA
  • Soft-start to limit inrush current
  • Overload and short-circuit protection
  • Thermal shutdown
  • Default output: high and low options
  • Signaling rate up to 100 Mbps
  • Low propagation delay: 13 ns Typ (5-V Supply)
  • High CMTI: ±100 kV/µs minimum
  • 16-pin wide SOIC package
  • Robust electromagnetic compatibility (EMC)
    • System-level ESD, EFT, and surge immunity
    • Low emissions
  • Extended temperature range: -40°C to +125°C
  • Safety-related certifications:
    • 7071 VPK reinforced isolation per DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12
    • 5000 VRMS isolation for 1 minute per UL 1577
    • CSA component acceptance Notice 5A, IEC 60950-1 and IEC 60601-1 end equipment standards
    • CQC approval per GB4943.1-2011
    • TUV certification according to EN 60950-1 and EN 61010-1
    • All agency certifications are planned
Applications
  • Industrial automation
  • Motor control
  • Grid infrastructure
  • Medical equipment
  • Test and measurement

ISOW784x Digital Isolators

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
ISOW7841FDWER datasheet linkDGTL ISO 5KV 4CH GEN PURP 16SOICISOW7841FDWERDGTL ISO 5KV 4CH GEN PURP 16SOIC2012 - Immediate
ISOW7841FDWER product page link
ISOW7841DWER datasheet linkDGTL ISO 5KV 4CH GEN PURP 16SOICISOW7841DWERDGTL ISO 5KV 4CH GEN PURP 16SOIC2891 - Immediate
ISOW7841DWER product page link
ISOW7844FDWE datasheet linkDGTL ISO 5KV 4CH GEN PURP 16SOICISOW7844FDWEDGTL ISO 5KV 4CH GEN PURP 16SOIC186 - Immediate
ISOW7844FDWE product page link
ISOW7842DWE datasheet linkHIGH-EFFICIENCY, LOW-EMISSIONS,ISOW7842DWEHIGH-EFFICIENCY, LOW-EMISSIONS,383 - Immediate
2160 - Factory Stock
ISOW7842DWE product page link
ISOW7844DWE datasheet linkDGTL ISO 5KV 4CH GEN PURP 16SOICISOW7844DWEDGTL ISO 5KV 4CH GEN PURP 16SOIC105 - Immediate
ISOW7844DWE product page link
ISOW7842FDWE datasheet linkHIGH-EFFICIENCY, LOW-EMISSIONS,ISOW7842FDWEHIGH-EFFICIENCY, LOW-EMISSIONS,63 - Immediate
ISOW7842FDWE product page link
ISOW7841DWE datasheet linkHIGH-EFFICIENCY, LOW-EMISSIONS,ISOW7841DWEHIGH-EFFICIENCY, LOW-EMISSIONS,64 - Immediate
ISOW7841DWE product page link
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Evaluation Board

ImageManufacturer Part NumberDescriptionMain PurposeUtilized IC / PartPrimary AttributesAvailable QuantityView Details
ISOW7841EVM datasheet linkEVAL BOARD FOR ISOW7841ISOW7841EVMEVAL BOARD FOR ISOW7841Interface, Digital IsolatorISOW78414-Channel (Quad)22 - Immediate
152 - Factory Stock
ISOW7841EVM product page link
Published: 2017-08-22