Satellites and subsystems > Electrical and electronic equipment (EEE) > ISOS141-SEP - Radiation tolerant quad-channel, 3/1 digital isolator in space enhanced plastic
Key highlights
The Texas Instruments ISOS141-SEP is a radiation-tolerant device designed for space and satellite applications.
It is a quad-channel digital isolator in a small form factor 16-pin QSOP package. Each isolation channel consists of a logic input and output buffer separated by a double capacitive silicon dioxide (SiO2) insulation barrier.
The ISOS141-SEP 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. It has three forward and one reverse-direction channels and if the input power or signal is lost, the default output is low.
It also provides high electromagnetic immunity and low emissions with low power consumption, while isolating CMOS or LVCMOS digital I/Os. The product 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.
Applications
- Low Earth Orbit (LEO) Space Applications
- Signal Isolation (RS-422, RS-485, CAN, SPI)
- Gate Driver Isolation or Isolated Feedback for GaN DC-DC converters
- Space-Grade Isolated DC/DC Module
- Spacecraft Battery Management System (BMS)
- Satellite Propulsion Power Processing Unit (PPU)
- Launcher & Lander Systems
- Communications Payload
- Radar Imaging Payload
Key features
- 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
- 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 - Default output low
- System-level ESD, EFT, Surge, and Magnetic Immunity
- Small QSOP (DBQ-16) package
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Last updated: 2024-07-01
ISOS141-SEP - Radiation tolerant quad-channel, 3/1 digital isolator in space enhanced plastic
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