My Inquiry
My Account
Skyworks Solutions Inc. SI8660BB-AUR
- Part No.:
- SI8660BB-AUR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI8660BB-AUR.pdf
- Description:
- AUTOMOTIVE 2.5 KV 6 FORWARD CHAN
- Quantity:
- Payment:
- Shipping:
Inventory:2,435
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI8660BB-AUR from Skyworks is a six-channel, unidirectional digital isolator with 6 input channels on VDD1 side and 0 on VDD2 side, rated for 2.5 kVRMS isolation, 150 Mbps data rate, and operation from –40 to 125 °C. It features Schmitt-trigger inputs, selectable fail-safe low-default output, and ultra-low power consumption (1.5 mA/channel at 1 Mbps, 2.5 V). It is used in isolated motor control gate drivers and battery management system signal interfaces.
For engineers reviewing the SI8660BB-AUR datasheet, SI8660BB-AUR pinout, SI8660BB-AUR application, or SI8660BB-AUR equivalent, this page delivers verified specifications, package mapping to QSOP-16, fail-safe behavior confirmation, timing performance (8 ns typical propagation delay), and automotive-grade AEC-Q100 qualification - all critical for high-reliability industrial and EV subsystem design.
Technical Context
The SI8660BB-AUR implements RF-based on-off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical degradation. Its architecture supports independent undervoltage lockout (UVLO) on both sides (VDD1/VDD2), with UVLO+ = 2.24 V and hysteresis of 70 mV.
All six channels are unidirectional from VDD1 to VDD2, with default low output during VDD1 loss (fail-safe mode). Input thresholds are VT+ = 1.67 V (typ) and VT– = 1.23 V (typ), providing 0.44 V hysteresis for high noise rejection in noisy motor drive or charging environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 6 unidirectional channels (VDD1 → VDD2 only); enables full-signal isolation for 3-phase inverter control logic. |
| Max Data Rate | 150 Mbps; supports high-speed feedback loops in servo drives and real-time BMS cell monitoring. |
| Propagation Delay | 8 ns typical; ensures sub-10 ns timing alignment critical for synchronous PWM gate driving. |
| Isolation Rating | 2.5 kVRMS; certified to UL 1577, VDE 0884-10, and IEC 62368-1 reinforced insulation standards. |
| Supply Voltage | 2.5–5.5 V per side; allows direct interface with 3.3 V microcontrollers and 5 V analog front-ends without level shifters. |
| Power @ 1 Mbps | 1.5 mA/channel @ 2.5 V; reduces total isolation-side quiescent current to <10 mA for always-on BMS monitoring. |
| CMTI | 50 kV/µs (typ); suppresses false triggering in high-dV/dt environments like traction inverters. |
Pinout & Package
SI8660BB-AUR is housed in a RoHS-compliant QSOP-16 package (5.3 mm × 10.2 mm, 1.0 mm height), optimized for space-constrained automotive modules and industrial PLC I/O cards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-side supply | Power for channel transmitters; must be ≥2.5 V for valid input sampling and UVLO exit. |
| GND1 | Input-side ground | Reference for all six input signals; requires dedicated low-impedance return path to minimize common-mode noise. |
| IN1–IN6 | Input channels | CMOS-compatible Schmitt-trigger inputs; accept 0–VDD1 logic; no external pull-ups needed for fail-safe low mode. |
| VDD2 | Output-side supply | Power for receivers and outputs; operates independently; enables dual-supply system partitioning. |
| GND2 | Output-side ground | Isolated reference for all six outputs; must be separated from GND1 by ≥8 mm creepage in PCB layout. |
| OUT1–OUT6 | Output channels | Push-pull CMOS outputs with 50 Ω nominal impedance; drive 15 pF loads directly; support controlled-impedance trace routing. |
Key Features
| Feature | Design Value |
|---|---|
| Selectable fail-safe output | Low-default state on VDD1 loss ensures gate drivers disable safely and BMS fault signals assert active-low. |
| Ultra-low power at 2.5 V | 1.5 mA/channel @ 1 Mbps enables >10-year battery life in wireless BMS sensor nodes. |
| Precision timing | 0.5 ns channel-to-channel skew and 2 ns propagation delay skew maintain phase coherence across 3-phase control paths. |
| AEC-Q100 Grade 1 | Qualified for –40 to 125 °C operation with zero-defect manufacturing flow - required for on-board chargers and traction inverters. |
| No start-up initialization | Valid output within 40 µs of VDD1 application eliminates boot-time uncertainty in safety-critical power systems. |
Applications
| Motor Control Gate Driving | Battery Management Systems |
|---|---|
|
Use Scenario: Isolating PWM signals from MCU to 3-phase IGBT/SiC gate drivers in EV traction inverters. IC Role / Device Role / Timing Role: Six-channel unidirectional isolator transmitting complementary high-side/low-side gate enable signals with matched timing. Use Value: 8 ns propagation delay and 0.5 ns channel skew preserve dead-time integrity, preventing shoot-through in 100 kHz switching inverters. |
Use Scenario: Isolating cell voltage and temperature measurement data from high-voltage battery pack to MCU in BEV packs. IC Role / Device Role / Timing Role: Signal isolator for SPI or custom serial bus between isolated ADCs and host controller across 400–800 V domains. Use Value: 2.5 kVRMS rating and AEC-Q100 qualification ensure long-term reliability under thermal cycling and vibration in automotive battery enclosures. |
| Industrial PLC Digital I/O | On-Board Chargers |
|
Use Scenario: Providing isolated input capture and output actuation for 24 V DC field devices in factory automation. IC Role / Device Role / Timing Role: Six-channel isolator interfacing PLC CPU to optocoupler-replacement input modules and solid-state relay drivers. Use Value: Schmitt-trigger inputs reject EMI from solenoid coils and contactors; 50 kV/µs CMTI prevents spurious interrupts in electrically noisy plants. |
Use Scenario: Isolating communication lines (e.g., CAN FD or UART) and status signals between AC/DC stage and DC/DC stage in bidirectional OBCs. IC Role / Device Role / Timing Role: Signal isolator for control loop feedback and fault reporting across galvanic barrier separating primary and secondary sides. Use Value: Fail-safe low output ensures charger disables safely during primary-side brownout; QSOP-16 footprint fits compact OBC PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8660BB-AU | Same electrical specs and pinout; differs only in packaging - tape-and-reel (AUR) vs. cut-tape (AU). | No functional difference; AU is suited for manual prototyping or low-volume assembly; AUR is optimized for SMT production lines. | Select SI8660BB-AUR for automated pick-and-place; SI8660BB-AU for bench validation or small-batch builds. |
| ADUM6601ARWZ | 6-channel, 2.5 kV, but higher 12.5 mA/channel @ 1 Mbps (5 V); no AEC-Q100 qualification; SOIC-16 package. | Lacks automotive qualification and failsafe-low ordering option; higher power limits use in thermally constrained modules. | Choose ADUM6601ARWZ only for non-automotive industrial designs where AEC-Q100 is not required and board space permits SOIC-16. |
Compared with SI8660BB-AUR, SI8660BB-AU offers identical performance in cut-tape form for flexibility, while ADUM6601ARWZ trades automotive compliance and ultra-low power for legacy compatibility - making SI8660BB-AUR the sole choice for AEC-Q100–mandated, space- and power-sensitive EV subsystems.
Availability
SI8660BB-AUR is available at Aetrix Electronics and suitable for motor control gate driving, battery management systems, industrial PLC digital I/O, and on-board chargers requiring stable component supply across automotive and industrial lifecycles.
Supply support for SI8660BB-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, high-speed signal isolation in automotive electrification and industrial automation, emphasizing AEC-Q100 compliance, ultra-low power, and precise timing.
FAQ
What is the isolation rating and safety certification of SI8660BB-AUR?
The SI8660BB-AUR provides 2.5 kVRMS isolation and is certified to UL 1577 (1 minute), VDE 0884-10, CSA Component Notice 5A, and IEC 62368-1 for reinforced insulation. These certifications validate its use in safety-critical automotive and industrial systems where galvanic separation is mandated.
Does SI8660BB-AUR support fail-safe operation, and how is it configured?
Yes, SI8660BB-AUR is ordered with fail-safe low output (denoted by "BB" in the part number), meaning all six outputs default to logic low when VDD1 is unpowered while VDD2 remains active. This behavior is fixed at manufacture and requires no external configuration or pins.
What package type and dimensions does SI8660BB-AUR use?
SI8660BB-AUR uses a QSOP-16 package measuring 5.3 mm × 10.2 mm with 1.0 mm height and 0.635 mm lead pitch. Its compact footprint supports high-density layouts in automotive ECUs and industrial I/O modules where SOIC-16 is too wide.
Is SI8660BB-AUR qualified for automotive applications?
Yes, SI8660BB-AUR is AEC-Q100 Grade 1 qualified (–40 to 125 °C), manufactured using automotive-specific process flows, and supported with AIAG-compliant PPAP documentation - meeting requirements for on-board chargers, battery management, and traction inverters.
What is the typical power consumption of SI8660BB-AUR at 100 Mbps and 2.5 V supply?
At 100 Mbps and 2.5 V supply, SI8660BB-AUR consumes 3.5 mA per channel on both VDD1 and VDD2 sides, totaling 21 mA for all six channels - significantly lower than competing isolators and enabling efficient thermal design in sealed automotive modules.
SI8660BB-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:
- 6/0
- 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
SI8660BB-AUR FAQ
1.How can I place an order for SI8660BB-AUR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8660BB-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 SI8660BB-AUR reliable?
The price and inventory of SI8660BB-AUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8660BB-AUR is usually 5 days.
3.What payment methods are accepted for SI8660BB-AUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8660BB-AUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8660BB-AUR?
SI8660BB-AUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8660BB-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 SI8660BB-AUR?
For technical support, including SI8660BB-AUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8660BB-AUR requirements.
6.How does Aetrix verify that SI8660BB-AUR is sourced from the original manufacturer or authorized distributors?
All SI8660BB-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 SI8660BB-AUR meets industry standards.
7.What is the process for return or replacement of SI8660BB-AUR?
All SI8660BB-AUR units undergo pre-shipment inspection (PSI). If there is an issue with SI8660BB-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 SI8660BB-AUR part is unused and in its original packaging.
Return procedure for SI8660BB-AUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8660BB-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…
