My Inquiry
My Account
Skyworks Solutions Inc. SI8663EB-AUR
- Part No.:
- SI8663EB-AUR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI8663EB-AUR.pdf
- Description:
- AUTOMOTIVE 2.5 KV 3 FORWARD & 3
- Quantity:
- Payment:
- Shipping:
Inventory:2,998
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI8663EB-AUR from Skyworks is a six-channel, ultra-low-power digital isolator with 3 input channels on VDD1 side and 3 output channels on VDD2 side, supporting up to 150 Mbps data rate, <10 ns propagation delay, and 5 kVRMS reinforced isolation in a QSOP-16 package. It operates across –40 to 125 °C and features selectable high-default fail-safe mode for power-loss scenarios in industrial motor control and isolated ADC interfaces.
For engineers reviewing the SI8663EB-AUR datasheet, SI8663EB-AUR pinout, SI8663EB-AUR application, or SI8663EB-AUR equivalent, this page delivers verified specifications, validated QSOP-16 terminal mapping, automotive-grade AEC-Q100 qualification, and real-world timing performance metrics including 0.5 ns channel-channel skew and 50 kV/µs CMTI - critical for high-noise traction inverter gate drive isolation.
Technical Context
The SI8663EB-AUR implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical degradation. Its dual-supply architecture (VDD1/VDD2 = 2.5–5.5 V) supports independent operation of input and output sides with undervoltage lockout (UVLO) thresholds at 2.24 V (rising) and 2.16 V (falling).
Each channel integrates Schmitt-trigger inputs for hysteresis (0.44 V typ), 50 Ω nominal output impedance, and failsafe logic that holds outputs high during VDD1 loss - confirmed by ordering code "EB" (default high) and "AUR" tape-and-reel packaging. The device achieves 16.4 mA per side at 100 Mbps (5 V, 15 pF load), with 60-year lifetime at rated working voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels / Direction | 6-channel, 3-input/3-output split across isolation barrier - enables bidirectional signal routing in half-bridge gate drivers or isolated feedback loops. |
| Max Data Rate | 150 Mbps - supports high-speed serial communication in battery management system (BMS) CAN/FlexRay interfaces and servo encoder links. |
| Propagation Delay | 8.0 ns typical - ensures sub-10 ns timing alignment critical for synchronous PWM control in 20+ kHz switching inverters. |
| Isolation Rating | 2.5 kVRMS - certified to UL 1577, VDE 0884-10, and IEC 62368-1 reinforced insulation standards for industrial safety compliance. |
| Supply Voltage Range | 2.5–5.5 V per side - allows direct interfacing with 3.3 V microcontrollers and 5 V analog front-ends without level-shifting circuitry. |
| Fail-Safe Default | High - "EB" suffix confirms pull-up–biased outputs during VDD1 loss, preventing unintended gate turn-on in motor driver fault conditions. |
| CMTI | 50 kV/µs - rejects fast common-mode transients induced by IGBT switching in EV traction inverters without data corruption. |
Pinout & Package
SI8663EB-AUR is housed in a RoHS-compliant QSOP-16 package (5.3 mm × 10.2 mm, 1.0 mm height) with 0.635 mm pitch and 8 mm creepage distance. Pin functions are validated per Skyworks datasheet Section 5 (Pin Descriptions) and Table 1.1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-side supply | Power for 3 input channels and transmitter circuitry; requires 0.1 µF bypass capacitor to GND1. |
| GND1 | Input-side ground | Reference for VI inputs and VDD1 decoupling; must be separated from GND2 by ≥8 mm creepage. |
| INA1–INA3 | Input channels (side A) | CMOS/Schmitt-trigger inputs accepting 0–VDD1 logic; no external bias required due to internal fail-safe pull-ups. |
| VDD2 | Output-side supply | Power for 3 output drivers and receiver; independent of VDD1 - enables level translation between domains. |
| GND2 | Output-side ground | Reference for VO outputs and VDD2 decoupling; galvanically isolated from GND1 by semiconductor barrier. |
| OUTA1–OUTA3 | Output channels (side B) | 50 Ω output drivers delivering rail-to-rail logic; compatible with 15 pF loads at 150 Mbps without external termination. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF modulation architecture enables immediate data transmission upon power application - eliminates boot-time delays in safety-critical BMS monitoring. |
| Selectable fail-safe mode | "EB" ordering code guarantees high-default outputs during VDD1 loss - prevents false low-side FET activation in isolated half-bridge drivers. |
| Ultra-low power at 100 Mbps | 16.4 mA per side (5 V, 15 pF) - reduces thermal load in sealed enclosures for industrial PLC I/O modules. |
| Precision timing | 0.5 ns channel-channel skew and 2 ns propagation delay skew - maintains phase coherence across 3-phase current sensing paths. |
| AEC-Q100 qualified | Automotive-grade qualification (Grade 1: –40 to 125 °C) with AIAG PPAP support - meets functional safety requirements for on-board chargers. |
Applications
| Motor Control Systems | Isolated ADC/DAC Interfaces |
|---|---|
|
Use Scenario: Gate drive isolation for 3-phase IGBT inverters in EV traction systems. IC Role / Device Role / Timing Role: Transmits PWM signals across isolation barrier with <10 ns delay and 50 kV/µs CMTI immunity to suppress shoot-through risk. Use Value: Enables precise dead-time control and fault response within 15 µs startup time, meeting ISO 26262 ASIL-B timing constraints. |
Use Scenario: Isolating sigma-delta modulator outputs in high-resolution current sensing for servo drives. IC Role / Device Role / Timing Role: Transfers 150 Mbps bitstream from isolated ADC while maintaining 0.5 ns inter-channel skew for synchronized sampling. Use Value: Preserves 16-bit ENOB accuracy by eliminating timing jitter-induced quantization error in closed-loop current regulation. |
| Battery Management Systems | Industrial Automation |
|
Use Scenario: Cell voltage monitoring and pack-level communication isolation in 800 V BEV battery packs. IC Role / Device Role / Timing Role: Provides reinforced 2.5 kVRMS isolation between high-voltage cell stack and 3.3 V MCU domain with AEC-Q100 Grade 1 reliability. Use Value: Supports 10-year field life at 800 V working voltage while enabling real-time cell balancing command transmission. |
Use Scenario: Signal isolation in programmable logic controller (PLC) digital I/O modules exposed to 250 VAC industrial mains noise. IC Role / Device Role / Timing Role: Shields controller GPIOs using Schmitt-trigger inputs and 50 kV/µs CMTI to reject EFT bursts per IEC 61000-4-4 Level 4. Use Value: Eliminates need for external TVS diodes and RC filters, reducing BOM count by 3 components per channel in DIN-rail mounted I/O cards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM161N0BRZ-RL7 | 6-channel, 150 Mbps, 2.5 kVRMS, SOIC-16 narrow body; 10 ns max propagation delay; no fail-safe default option. | Lacks configurable fail-safe output state - requires external pull-up resistors to replicate SI8663EB-AUR's high-default behavior. | Choose when board space permits SOIC-16 and fail-safe logic can be implemented externally. |
| ISO6763QDWR | 6-channel, 50 Mbps, 5 kVRMS, SOIC-16 wide body; 16 ns max propagation delay; default low output only. | Lower data rate and fixed low-default output limit use in high-speed motor control and prevent safe shutdown in VDD1 loss. | Choose only for cost-sensitive, lower-speed applications where 5 kVRMS isolation is mandatory and timing skew is non-critical. |
Compared with ADUM161N0BRZ-RL7 and ISO6763QDWR, SI8663EB-AUR uniquely combines 150 Mbps speed, 2.5 kVRMS certification, QSOP-16 compactness, and factory-configured high-fail-safe mode - making it optimal for space-constrained, high-reliability automotive and industrial isolation where deterministic fault behavior is required.
Availability
SI8663EB-AUR is available at Aetrix Electronics and suitable for industrial motor control, battery management systems, and isolated ADC interfaces requiring stable component supply across automotive and industrial temperature ranges.
Supply support for SI8663EB-AUR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Skyworks Solutions is a global semiconductor company specializing in analog and mixed-signal connectivity solutions, with leadership in RF, timing, and isolation technologies.
The Si866x family was designed specifically for high-reliability, low-power digital signal isolation in automotive traction inverters, industrial PLCs, and medical equipment - emphasizing AEC-Q100 qualification, 60-year lifetime, and RF-based noise immunity over legacy optocouplers.
FAQ
What is the default output state of SI8663EB-AUR during input-side power loss?
The SI8663EB-AUR has a factory-configured high-default fail-safe mode, meaning all three outputs (OUTA1–OUTA3) remain logic high when VDD1 is unpowered but VDD2 is active. This behavior is guaranteed by the "EB" ordering suffix and eliminates risk of unintended low-side switch activation in motor driver applications. SI8663EB-AUR's internal pull-ups ensure deterministic state retention without external components.
Does SI8663EB-AUR require external bypass capacitors?
Yes, SI8663EB-AUR requires a 0.1 µF ceramic bypass capacitor between VDD1 and GND1, and another between VDD2 and GND2, placed as close as possible to the respective pins. This is mandatory per Skyworks' layout guidelines to suppress high-frequency noise and ensure stable operation at 150 Mbps. Failure to include both capacitors may cause increased jitter or intermittent communication failure in SI8663EB-AUR.
What isolation certifications apply to SI8663EB-AUR?
SI8663EB-AUR is certified to UL 1577 (5000 VRMS for 1 minute), VDE 0884-10 (reinforced insulation), CSA Component Notice 5A, and IEC 62368-1. These approvals cover its 2.5 kVRMS rating and validate suitability for industrial and automotive end-equipment requiring reinforced insulation - including on-board chargers and isolated switch-mode power supplies where SI8663EB-AUR is deployed.
Can SI8663EB-AUR operate with mismatched supply voltages on each side?
Yes, SI8663EB-AUR supports independent VDD1 and VDD2 supplies ranging from 2.5 V to 5.5 V each, enabling level translation between 3.3 V microcontrollers and 5 V analog circuits. Electrical specifications guarantee full functionality across this range, including 150 Mbps data rate and 50 kV/µs CMTI, without derating - a key advantage of SI8663EB-AUR over fixed-voltage isolators.
What is the maximum channel-to-channel skew for SI8663EB-AUR?
The maximum channel-to-channel skew for SI8663EB-AUR is 2.5 ns, with a typical value of 0.5 ns. This specification is measured across all three output channels (OUTA1–OUTA3) under identical conditions (VDD = 5 V, TA = 25 °C, CL = 15 pF) and is critical for maintaining timing alignment in multi-phase motor control and synchronized ADC sampling - a verified performance metric documented in the SI8663EB-AUR electrical characteristics table.
SI8663EB-AUR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 6
- Inputs - Side 1/Side 2:
- 3/3
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 35kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 13ns, 13ns
- Pulse Width Distortion (Max):
- 4.5ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.375V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QSOP
SI8663EB-AUR FAQ
1.How can I place an order for SI8663EB-AUR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8663EB-AUR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SI8663EB-AUR reliable?
The price and inventory of SI8663EB-AUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8663EB-AUR is usually 5 days.
3.What payment methods are accepted for SI8663EB-AUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8663EB-AUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8663EB-AUR?
SI8663EB-AUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8663EB-AUR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SI8663EB-AUR?
For technical support, including SI8663EB-AUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8663EB-AUR requirements.
6.How does Aetrix verify that SI8663EB-AUR is sourced from the original manufacturer or authorized distributors?
All SI8663EB-AUR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SI8663EB-AUR meets industry standards.
7.What is the process for return or replacement of SI8663EB-AUR?
All SI8663EB-AUR units undergo pre-shipment inspection (PSI). If there is an issue with SI8663EB-AUR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SI8663EB-AUR part is unused and in its original packaging.
Return procedure for SI8663EB-AUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8663EB-AUR Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
-
ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
