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ISOS141FDBQSEP

Radiation tolerant quad-channel, 3/1 digital isolator in space enhanced plastic

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

ISOS141FDBQSEP
Datasheet:

ISOS141FDBQSEP Datasheet (PDF)
Technology:

Capacitive Coupling
Type:

CAN, RS422, RS485, SPI
Isolated Power:

No
Number of Channels:

4
EDA/CAD Models:

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ISOS141FDBQSEP General Description

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.

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 V_DC
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 V_RMS 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

Specifications

Category	IsolatorsDigital Isolators	Series	-
Technology	Capacitive Coupling	Type	CAN, RS422, RS485, SPI
Isolated Power	No	Number of Channels	4
Inputs - Side 1/Side 2	3/1	Channel Type	Unidirectional
Voltage - Isolation	3000Vrms	Common Mode Transient Immunity (Min)	100kV/µs
Data Rate	100Mbps	Propagation Delay tpLH / tpHL (Max)	16ns, 16ns
Pulse Width Distortion (Max)	4.9ns	Rise / Fall Time (Typ)	2.4ns, 2.4ns
Voltage - Supply	2.25V ~ 5.5V	Operating Temperature	-55°C ~ 125°C
Mounting Type	Surface Mount	Base Product Number	ISOS141
Rating	Space	Integrated isolated power	No
Isolation rating	Basic	Number of channels	4
Forward/reverse channels	3 forward / 1 reverse	Default output	High, Low
Data rate (max) (MBps)	100	Surge isolation voltage (VIOSM) (VPK)	5200
Transient isolation voltage (VIOTM) (VPK)	4242	Withstand isolation voltage (VISO) (Vrms)	3000
CMTI (min) (V/µs)	85000	Operating temperature range (°C)	-55 to 125
Supply voltage (max) (V)	5.5	Supply voltage (min) (V)	2.25
Propagation delay time (typ) (µs)	0.0107	Current consumption per channel (DC) (typ) (mA)	0.88
Current consumption per channel (1 Mbps) (typ) (mA)	1.48	Creepage (min) (mm)	3.7
Clearance (min) (mm)	3.7	feature-number-of-channels-per-chip	4
feature-maximum-data-rate	100Mbps	feature-maximum-rise-time-ns
feature-maximum-fall-time-ns		feature-minimum-pulse-width-ns
feature-maximum-pulse-width-distortion-ns		feature-minimum-operating-supply-voltage-v	2.25
feature-maximum-propagation-delay-skew-ns		feature-output-type
feature-maximum-operating-supply-voltage-v	5.5	feature-maximum-propagation-delay-time-tphl-ns
feature-maximum-propagation-delay-time-tplh-ns		feature-maximum-quiescent-supply-current-ma
feature-maximum-power-dissipation-mw		feature-packaging
feature-rad-hard		feature-pin-count
feature-cecc-qualified		feature-esd-protection
feature-military		feature-aec-qualified
feature-aec-qualified-number		feature-eccn-code	EAR99
feature-svhc		feature-svhc-exceeds-threshold