ISOW7821 Series

Dual-channel, 1/1, reinforced digital isolator with integrated power

Catalog

Dual-channel, 1/1, reinforced digital isolator with integrated power

Part	Inputs - Side 1/Side 2	Rise / Fall Time (Typ) [custom]	Rise / Fall Time (Typ) [custom]	Pulse Width Distortion (Max) [Max]	Voltage - Supply [Max]	Voltage - Supply [Min]	Supplier Device Package	Technology	Type	Channel Type	Operating Temperature [Min]	Operating Temperature [Max]	Data Rate	Package / Case [x]	Package / Case	Package / Case [y]	Number of Channels [custom]	Propagation Delay tpLH / tpHL (Max) [Max] [custom]	Propagation Delay tpLH / tpHL (Max) [Max] [custom]	Mounting Type	Common Mode Transient Immunity (Min) [Min]
Texas Instruments ISOW7821DWER	1/1	2 ns	2 ns	4.7 ns	5.5 V	3 V	16-SOIC	Capacitive Coupling	General Purpose	Unidirectional	-40 °C	125 °C	100 Mbps	0.295 in	16-SOIC	7.5 mm	2	17.6 ns	17.6 ns	Surface Mount	100 V/ns
Texas Instruments ISOW7821FDWER	1/1	2 ns	2 ns	4.7 ns	5.5 V	3 V	16-SOIC	Capacitive Coupling	General Purpose	Unidirectional	-40 °C	125 °C	100 Mbps	0.295 in	16-SOIC	7.5 mm	2	17.6 ns	17.6 ns	Surface Mount	100 V/ns
Texas Instruments ISOW7821FDWE	1/1	4 ns	4 ns	4.7 ns	5.5 V	3 V	16-SOIC	Capacitive Coupling	General Purpose	Unidirectional	-40 °C	125 °C	100 Mbps	0.295 in	16-SOIC	7.5 mm	2	17.6 ns	17.6 ns	Surface Mount	100 V/ns
Texas Instruments ISOW7821DWE	1/1	4 ns	4 ns	4.7 ns	5.5 V	3 V	16-SOIC	Capacitive Coupling	General Purpose	Unidirectional	-40 °C	125 °C	100 Mbps	0.295 in	16-SOIC	7.5 mm	2	17.6 ns	17.6 ns	Surface Mount	100 V/ns

Catalog

Dual-channel, 1/1, reinforced digital isolator with integrated power

Key Features

• Integrated High-Efficiency DC-DC Converter With On-Chip Transformer100 Mbps data rateRobust isolation barrier:>100-Year projected lifetime at 1 kVRMSworking voltageUp to 5000 VRMSisolation ratingUp to 10 kVPKsurge capability±100 kV/µs minimum CMTI3-V to 5.5-V Wide Input Supply RangeRegulated 5-V or 3.3-V OutputUp to 0.65-W Output Power5 V to 5 V; 5 V to 3.3 V: Available Load Current ≥ 130 mA3.3 V to 3.3 V: Available Load Current ≥ 75 mASoft-Start to Limit Inrush CurrentOverload and Short-Circuit ProtectionThermal ShutdownDefault Output: High and Low OptionsLow Propagation Delay: 13 ns Typ (5-V Supply)Robust Electromagnetic Compatibility (EMC)System-Level ESD, EFT, and Surge Immunity±8 kV IEC 61000-4-2 contact discharge protection across isolation barrierLow Emissions16-pin Wide SOIC PackageExtended Temperature Range: –40°C to +125°CSafety-Related Certifications:7071-VPKReinforced Isolation per DIN VDE V 0884-11:2017-015000-VRMSIsolation for 1 Minute per UL 1577CSA Certification per IEC 60950-1, IEC 62368-1, and IEC 60601-1 End Equipment StandardsCQC Approval per GB4943.1-2011TUV Certification According to EN 60950-1, EN62368-1 and EN 61010-1Integrated High-Efficiency DC-DC Converter With On-Chip Transformer100 Mbps data rateRobust isolation barrier:>100-Year projected lifetime at 1 kVRMSworking voltageUp to 5000 VRMSisolation ratingUp to 10 kVPKsurge capability±100 kV/µs minimum CMTI3-V to 5.5-V Wide Input Supply RangeRegulated 5-V or 3.3-V OutputUp to 0.65-W Output Power5 V to 5 V; 5 V to 3.3 V: Available Load Current ≥ 130 mA3.3 V to 3.3 V: Available Load Current ≥ 75 mASoft-Start to Limit Inrush CurrentOverload and Short-Circuit ProtectionThermal ShutdownDefault Output: High and Low OptionsLow Propagation Delay: 13 ns Typ (5-V Supply)Robust Electromagnetic Compatibility (EMC)System-Level ESD, EFT, and Surge Immunity±8 kV IEC 61000-4-2 contact discharge protection across isolation barrierLow Emissions16-pin Wide SOIC PackageExtended Temperature Range: –40°C to +125°CSafety-Related Certifications:7071-VPKReinforced Isolation per DIN VDE V 0884-11:2017-015000-VRMSIsolation for 1 Minute per UL 1577CSA Certification per IEC 60950-1, IEC 62368-1, and IEC 60601-1 End Equipment StandardsCQC Approval per GB4943.1-2011TUV Certification According to EN 60950-1, EN62368-1 and EN 61010-1

Description

The ISOW7821 device is a high-performance, dual-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 this device eliminates the need for a separate isolated power supply in space-constrained isolated designs. The ISOW7821 device provides 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 ISOW7821 device and low for the device with the F suffix (see theDevice Features). 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 ISOW7821 device 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 ISOW7821 device is available in a 16-pin SOIC wide-body (SOIC-WB) DWE package. The ISOW7821 device is a high-performance, dual-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 this device eliminates the need for a separate isolated power supply in space-constrained isolated designs. The ISOW7821 device provides 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 ISOW7821 device and low for the device with the F suffix (see theDevice Features). 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 ISOW7821 device 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 ISOW7821 device is available in a 16-pin SOIC wide-body (SOIC-WB) DWE package.