My Inquiry
My Account
Skyworks Solutions Inc. SI86SS41EC-AS1R
- Part No.:
- SI86SS41EC-AS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86SS41EC-AS1R.pdf
- Description:
- 3.75 KVRMS SPI COMPATIBLE ISOLAT
- Quantity:
- Payment:
- Shipping:
Inventory:4,982
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI86SS41EC-AS1R from Skyworks Solutions is a 4-channel SPI digital isolator with reinforced 6000 VRMS isolation, 150 Mbps data rate, and dual 2.25–5.5 V supply operation. It provides isolated SPI communication between microcontroller (Side A) and peripheral (Side B), supporting industrial motor control, battery management systems, and isolated ADC/DAC interfaces.
For engineers reviewing the SI86SS41EC-AS1R datasheet, SI86SS41EC-AS1R pinout, SI86SS41EC-AS1R application, or SI86SS41EC-AS1R equivalent, key selection criteria include its dedicated SPI channel mapping (MCSb/MCLK/MO/MI on Side A; SCSb/SCLK/SI/SO on Side B), fail-safe default-low output configuration, 10 ns typical propagation delay, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The SI86SS41EC-AS1R implements RF-based on/off keying across a semiconductor isolation barrier-eliminating start-up initialization and enabling robust noise immunity. Its architecture supports full-duplex SPI signal isolation with independent side-A and side-B undervoltage lockout (UVLO) thresholds (2.10–2.25 V) and reset detection at ~1.7 V.
It features Schmitt-trigger + CMOS input thresholds, 100 kV/µs CMTI, and precise timing: 10 ns propagation delay, 3.5 ns pulse width distortion, and 36 ns input deglitch filtering (confirmed for Si86S64x family including SI86SS41). No external components beyond 0.1 µF + 10 µF bypass capacitors are required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed SPI clocking up to 75 MHz with reliable edge integrity |
| Isolation rating | 6000 VRMS - enables reinforced insulation per IEC 60747-17 and UL 1577 for safety-critical industrial and automotive systems |
| Propagation delay | 10 ns typical - ensures tight timing alignment between isolated SPI master and slave signals |
| Supply voltage | 2.25–5.5 V per side - allows interoperability with 3.3 V and 5 V logic domains without level shifters |
| Operating temperature | –40 to 125 °C - qualified for under-hood automotive and industrial ambient environments |
| CMTI | ≥100 kV/µs - prevents false triggering in high-noise motor drive and inverter applications |
| Fail-safe mode | Default low output - maintains safe state during power loss on Side A while Side B remains powered |
Pinout & Package
SI86SS41EC-AS1R uses a WB SOIC-16 (wide-body small-outline integrated circuit) package with 16 pins and 8.3 mm creepage/clearance, supporting 6000 VRMS isolation. Pin numbering follows standard SOIC layout (pin 1 = top-left corner, counterclockwise).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Main side (Side A) power pair | Supplies controller-side logic; requires 0.1 µF + 10 µF local bypass |
| MCSb, MCLK, MO, MI | Side A SPI interface | MCSb = active-low chip select; MCLK = clock input; MO = MOSI input; MI = MISO output |
| NC | No-connect | Pin 7 is unconnected - must be left floating or grounded per layout best practice |
| VDD2, GND2 | Secondary side (Side B) power pair | Supplies peripheral-side logic; independent of Side A supply |
| SCSb, SCLK, SI, SO | Side B isolated SPI interface | SCSb = isolated chip select; SCLK = isolated clock output; SI = isolated MOSI output; SO = isolated MISO input |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation | Eliminates LED aging and temperature drift issues inherent in optocouplers; no start-up initialization required |
| SPI-dedicated channel mapping | Hardwired pin assignments (MCSb/MCLK/MO/MI ↔ SCSb/SCLK/SI/SO) reduce routing complexity vs. generic digital isolators |
| Input deglitch filter | 36 ns pulse rejection - suppresses EFT bursts and switching noise in industrial bus environments |
| AEC-Q100 qualification | Validated for automotive use including onboard chargers and battery management systems |
| Fail-safe default-low | Ensures peripheral remains disabled during controller power-up or brownout - critical for functional safety |
Applications
| Industrial Motor Control | Battery Management Systems |
|---|---|
Use Scenario: Isolating SPI communication between MCU and isolated gate drivers or current-sense ADCs in 3-phase inverter stacks. IC Role / Device Role / Timing Role: SPI isolator bridging control domain (3.3 V MCU) and power domain (5 V isolated ADC/gate driver), preserving timing integrity at 20+ MHz clock rates. Use Value: Enables safe, high-bandwidth feedback loop closure with 10 ns propagation delay and 100 kV/µs CMTI immunity to IGBT switching transients. | Use Scenario: Isolating SPI interface between battery monitor IC (e.g., BQ796xx) and system MCU in EV traction battery packs. IC Role / Device Role / Timing Role: Provides reinforced 6000 VRMS isolation for cell voltage/temperature readout, meeting IEC 62619 and ISO 26262 requirements. Use Value: AEC-Q100 qualification and default-low fail-safe ensure safe shutdown during MCU power loss - preventing erroneous cell balancing commands. |
| Isolated Data Acquisition | Onboard Charger Control |
Use Scenario: Isolating SPI links between precision SAR ADCs (e.g., AD7606) and host processor in medical imaging or test equipment. IC Role / Device Role / Timing Role: Transfers 16-bit conversion results at up to 1 MSPS with deterministic latency, maintaining SNR integrity across isolation barrier. Use Value: Low 3.5 ns pulse width distortion preserves sampling window accuracy; Schmitt-trigger inputs reject analog-domain noise coupling. | Use Scenario: Isolating digital control signals (SPI, enable, fault) between OBC controller and high-voltage DC-DC stage in Level 2 EV chargers. IC Role / Device Role / Timing Role: SPI isolator enabling real-time parameter tuning and status reporting across 600 V+ working voltage barriers. Use Value: WB SOIC-16 package meets 8.3 mm creepage requirements for 600 V AC mains; UL/VDE/CSA certifications simplify end-equipment approval. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM3401CRWZ | 4-channel, 50 Mbps, 2.5–3.6 V only, 2500 VRMS isolation | Limited to lower-speed, single-supply industrial systems; lacks AEC-Q100 and 6000 VRMS rating | Choose when cost sensitivity outweighs speed, voltage flexibility, and safety certification needs |
| ISO6741FDWR | 4-channel, 50 Mbps, 3.0–5.5 V, 5000 VRMS, no SPI-dedicated pinout | Requires external logic for SPI direction handling; not AEC-Q100 qualified | Prefer for general-purpose isolation where pin assignment flexibility is prioritized over SPI optimization |
Compared with ADUM3401CRWZ and ISO6741FDWR, SI86SS41EC-AS1R delivers 3× higher data rate, dual-supply flexibility, reinforced 6000 VRMS isolation, and native SPI pin mapping-making it optimal for automotive OBCs, high-fidelity data acquisition, and noise-intensive motor drives where timing determinism and safety compliance are non-negotiable.
Availability
SI86SS41EC-AS1R is available at Aetrix Electronics and suitable for industrial motor control, battery management systems, and isolated data acquisition requiring stable component supply across automotive and industrial design cycles.
Supply support for SI86SS41EC-AS1R 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 Si86Sxx family was designed specifically for high-reliability, high-speed digital isolation in safety-critical automotive and industrial systems-emphasizing reinforced insulation, AEC-Q100 compliance, and RF-based noise immunity.
FAQ
What is the isolation voltage rating of the SI86SS41EC-AS1R and which safety standards does it meet?
The SI86SS41EC-AS1R provides 6000 VRMS reinforced isolation per UL 1577 and is certified to IEC 60747-17, CSA 62368-1/60601-1, and CQC GB4943.1. This rating is validated for 1-minute withstand and supports working voltages up to 600 V AC in end equipment - making SI86SS41EC-AS1R suitable for high-voltage industrial inverters and automotive onboard chargers.
Does the SI86SS41EC-AS1R require external components for basic operation?
No, the SI86SS41EC-AS1R operates with only two bypass capacitors per side: 0.1 µF ceramic + 10 µF bulk capacitor between VDD1/GND1 and VDD2/GND2. Unlike optocouplers or older isolators, SI86SS41EC-AS1R needs no pull-up resistors, level shifters, or initialization firmware - reducing BOM count and startup complexity.
How does the fail-safe default-low mode function in the SI86SS41EC-AS1R during power loss?
When VDD1 (Side A) falls below UVLO– (~2.05 V) while VDD2 remains powered, SI86SS41EC-AS1R forces all Side B outputs (SCSb, SCLK, SI, SO) low. This prevents unintended peripheral activation during MCU brownout - a critical behavior for functional safety in battery management and motor control systems using SI86SS41EC-AS1R.
What is the maximum SPI clock frequency supported by the SI86SS41EC-AS1R?
The SI86SS41EC-AS1R supports data rates up to 150 Mbps, enabling reliable SPI operation at clock frequencies up to 75 MHz (with 2-bit-per-cycle transfer). Its 10 ns typical propagation delay and 3.5 ns pulse width distortion preserve setup/hold margins even at full speed - verified across –40 to 125 °C for SI86SS41EC-AS1R.
Is the SI86SS41EC-AS1R pin-compatible with other devices in the Si86Sxx family?
No - SI86SS41EC-AS1R has a unique SPI-optimized pinout (MCSb/MCLK/MO/MI on Side A; SCSb/SCLK/SI/SO on Side B) that differs from generic Si86S64x or Si86SM4x variants. Substituting with non-SS-series parts requires PCB redesign due to incompatible signal mapping and missing dedicated SPI control pins in SI86SS41EC-AS1R.
SI86SS41EC-AS1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 3/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 150kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 42ns, 42ns
- Pulse Width Distortion (Max):
- 2ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.25V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI86SS41EC-AS1R FAQ
1.How can I place an order for SI86SS41EC-AS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SS41EC-AS1R 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 SI86SS41EC-AS1R reliable?
The price and inventory of SI86SS41EC-AS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SS41EC-AS1R is usually 5 days.
3.What payment methods are accepted for SI86SS41EC-AS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SS41EC-AS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SS41EC-AS1R?
SI86SS41EC-AS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SS41EC-AS1R 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 SI86SS41EC-AS1R?
For technical support, including SI86SS41EC-AS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SS41EC-AS1R requirements.
6.How does Aetrix verify that SI86SS41EC-AS1R is sourced from the original manufacturer or authorized distributors?
All SI86SS41EC-AS1R 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 SI86SS41EC-AS1R meets industry standards.
7.What is the process for return or replacement of SI86SS41EC-AS1R?
All SI86SS41EC-AS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI86SS41EC-AS1R, 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 SI86SS41EC-AS1R part is unused and in its original packaging.
Return procedure for SI86SS41EC-AS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SS41EC-AS1R 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…
