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ISOS141-SEP

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Radiation tolerant, quad channel, 3/1 digital isolator

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Data sheet

ISOS141-SEP

ACTIVE
Data sheet Order now

Product details

Rating Space Integrated isolated power No Number of channels 4 Forward/reverse channels 3 forward / 1 reverse Data rate (max) (Mbps) 100 Protocols GPIO, PWM, SPI, UART SPI frequency (max) (MHz) 15.5 Propagation delay time (typ) (ns) 10.7 Propagation delay time (max) (ns) 16 Channel-to-channel output skew (max) (ns) 4 Certifications DIN Isolation rating Basic Withstand isolation voltage (VISO) (Vrms) 3000 Surge isolation voltage (VIOSM) (kVPK) 5.2 CMTI (min) (kV/µs) 85 Default output High, Low Creepage (min) (mm) 3.7 Current consumption per channel (DC) (typ) (mA) 0.88 Current consumption per channel (1 Mbps) (typ) (mA) 1.48 Operating temperature range (°C) -55 to 125 Transient isolation voltage (VIOTM) (VPK) 4242 Clearance (min) (mm) 3.7
Rating Space Integrated isolated power No Number of channels 4 Forward/reverse channels 3 forward / 1 reverse Data rate (max) (Mbps) 100 Protocols GPIO, PWM, SPI, UART SPI frequency (max) (MHz) 15.5 Propagation delay time (typ) (ns) 10.7 Propagation delay time (max) (ns) 16 Channel-to-channel output skew (max) (ns) 4 Certifications DIN Isolation rating Basic Withstand isolation voltage (VISO) (Vrms) 3000 Surge isolation voltage (VIOSM) (kVPK) 5.2 CMTI (min) (kV/µs) 85 Default output High, Low Creepage (min) (mm) 3.7 Current consumption per channel (DC) (typ) (mA) 0.88 Current consumption per channel (1 Mbps) (typ) (mA) 1.48 Operating temperature range (°C) -55 to 125 Transient isolation voltage (VIOTM) (VPK) 4242 Clearance (min) (mm) 3.7
SSOP (DBQ) 16 29.4 mm² (4.9 mm × 6 mm)
  • Radiation Tolerant
    • Total Ionizing Dose (TID) Characterized (ELDRS-Free) = 30 krad(Si)
    • TID RLAT/RHA = 30 krad(Si)
    • Single-Event Latch-up (SEL) Immune to LET = 43 MeV⋅cm2/mg at 125°C
    • Single-Event Dielectric Rupture (SEDR) Immune (43 MeV⋅cm2/mg) at 500 VDC
  • Space Enhanced Plastic (Space EP)
    • Meets NASA’s ASTM E595 Outgassing Spec
    • Vendor Item Drawing (VID) V62/21610
    • Military Temp Range (-55°C to 125°C)
    • One Wafer Fabrication Site
    • One Assembly and Test Site
    • Gold Bond Wire, NiPdAu Lead Finish
    • Wafer Lot Traceability
    • Extended Product Life Cycle
    • Extended Product Change Notification
  • 600 VRMS continous working voltage
  • Section 6.7:
    • DIN VDE V 0884-11:2017-01
    • UL 1577 component recognition program
  • 100 Mbps data rate
  • Wide supply range: 2.25 V to 5.5 V
  • 2.25-V to 5.5-V level translation
  • Default output low
  • Low power consumption, 1.5 mA per channel typical at 1 Mbps
  • Low propagation delay: 10.7 ns typical (5-V Supplies)
  • Low channel-to-channel skew: 4 ns max (5-V Supplies)
  • ±100 kV/µs typical CMTI
  • System-level ESD, EFT, Surge, and Magnetic Immunity

  • Small QSOP (DBQ-16) package
  • Radiation Tolerant
    • Total Ionizing Dose (TID) Characterized (ELDRS-Free) = 30 krad(Si)
    • TID RLAT/RHA = 30 krad(Si)
    • Single-Event Latch-up (SEL) Immune to LET = 43 MeV⋅cm2/mg at 125°C
    • Single-Event Dielectric Rupture (SEDR) Immune (43 MeV⋅cm2/mg) at 500 VDC
  • Space Enhanced Plastic (Space EP)
    • Meets NASA’s ASTM E595 Outgassing Spec
    • Vendor Item Drawing (VID) V62/21610
    • Military Temp Range (-55°C to 125°C)
    • One Wafer Fabrication Site
    • One Assembly and Test Site
    • Gold Bond Wire, NiPdAu Lead Finish
    • Wafer Lot Traceability
    • Extended Product Life Cycle
    • Extended Product Change Notification
  • 600 VRMS continous working voltage
  • Section 6.7:
    • DIN VDE V 0884-11:2017-01
    • UL 1577 component recognition program
  • 100 Mbps data rate
  • Wide supply range: 2.25 V to 5.5 V
  • 2.25-V to 5.5-V level translation
  • Default output low
  • Low power consumption, 1.5 mA per channel typical at 1 Mbps
  • Low propagation delay: 10.7 ns typical (5-V Supplies)
  • Low channel-to-channel skew: 4 ns max (5-V Supplies)
  • ±100 kV/µs typical CMTI
  • System-level ESD, EFT, Surge, and Magnetic Immunity

  • Small QSOP (DBQ-16) package

The ISOS141-SEP radiation-tolerant device is a high-performance, quad-channel digital isolator in a small form factor 16-pin QSOP package. Each isolation channel has a logic input and output buffer separated by a double capacitive silicon dioxide (SiO2) insulation barrier. This device supports low Earth orbit (LEO) space applications with its high data rate of 100 Mbps, low propagation delay of 10.7 ns, and tight channel-to-channel skew of 4 ns. The ISOS141-SEP device has three forward and one reverse-direction channels and if the input power or signal is lost, the default output is low. The enable pins can be used to put the respective outputs in high impedance for multi-master driving applications and to reduce power consumption.

The ISOS141-SEP provides high electromagnetic immunity and low emissions with low power consumption, while isolating CMOS or LVCMOS digital I/Os. The device has a high common-mode transient immunity of 100 kV/µs and can ease system-level ESD, EFT, surge, and simplify emissions compliance through its innovative chip design.

The ISOS141-SEP radiation-tolerant device is a high-performance, quad-channel digital isolator in a small form factor 16-pin QSOP package. Each isolation channel has a logic input and output buffer separated by a double capacitive silicon dioxide (SiO2) insulation barrier. This device supports low Earth orbit (LEO) space applications with its high data rate of 100 Mbps, low propagation delay of 10.7 ns, and tight channel-to-channel skew of 4 ns. The ISOS141-SEP device has three forward and one reverse-direction channels and if the input power or signal is lost, the default output is low. The enable pins can be used to put the respective outputs in high impedance for multi-master driving applications and to reduce power consumption.

The ISOS141-SEP provides high electromagnetic immunity and low emissions with low power consumption, while isolating CMOS or LVCMOS digital I/Os. The device has a high common-mode transient immunity of 100 kV/µs and can ease system-level ESD, EFT, surge, and simplify emissions compliance through its innovative chip design.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet ISOS141-SEP Radiation Tolerant High-Speed Quad-Channel Digital Isolator datasheet PDF | HTML Mar 5, 2021
* Radiation & reliability report ISOS141-SEP Production Flow and Reliability Report (Rev. A) PDF | HTML Jun 5, 2025
* Radiation & reliability report ISOS141-SEP Neutron Displacement Damage Characterization Mar 18, 2021
* Radiation & reliability report ISOS141-SEP Quad-Channel Digital Isolator TID Report Mar 17, 2021
* Radiation & reliability report ISOS141-SEP Single-Event Latch-Up (SEL) Radiation Report Mar 17, 2021
Certificate VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. AA) Jun 11, 2026
Certificate UL Certificate of Compliance File E181974 Vol 4 Sec 6 (Rev. S) May 7, 2026
Selection guide TI Space Products (Rev. L) Mar 27, 2026
Application brief Precision High-Voltage Current Sensing Using Zener-Shifted Floating Ground and Isolated Digital Interface PDF | HTML Dec 10, 2025
White paper Designing Space Systems With Integrated FDIR: A Guide to TI's Space-Grade Components PDF | HTML Jul 12, 2025
Technical article How Space Enhanced Products Address Challenges in low Earth orbit Applications (Rev. A) PDF | HTML Dec 18, 2023
Application brief How to Isolate Signals with Digital Isolators in Emerging LEO Satellite Apps (Rev. A) PDF | HTML Jul 6, 2022
Technical article How space-grade digital isolation meets high radiation and immunity requirements i PDF | HTML Oct 14, 2021
Application brief Space-Grade, 30-krad, Isolated CAN Serial Transceiver Circuit PDF | HTML Jun 1, 2021
Application brief Space-Grade, 30-krad, Isolated RS-422 Serial Transceiver Circuit PDF | HTML Jun 1, 2021
Application brief Space-Grade, 30 krad, Isolated I2C Circuit PDF | HTML Jun 1, 2021
Technical article How to select the right digital isolator for your design PDF | HTML Oct 21, 2020
Technical article Top 9 design questions about digital isolators PDF | HTML Feb 4, 2019

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Evaluation board

DIGI-ISO-EVM — Universal digital isolator evaluation module

DIGI-ISO-EVM is an evaluation module (EVM) used to evaluate any of the TI single-channel, dual-channel, triple-channel, quad-channel or six-channel digital isolator devices in five different packages - 8-pin narrow-body SOIC (D), 8-pin wide-body SOIC (DWV), 16-pin wide-body SOIC (DW), 16-pin ultra- (...)

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ISOS141-SEP IBIS Model

SLLM498.ZIP (63 KB) - IBIS model
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SSOP (DBQ) 16 Ultra Librarian
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