My Inquiry
My Account
Skyworks Solutions Inc. SI86SL42EC-AS1R
- Part No.:
- SI86SL42EC-AS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86SL42EC-AS1R.pdf
- Description:
- 3.75 KVRMS LOW POWER ISOLATOR, 4
- Quantity:
- Payment:
- Shipping:
Inventory:1,953
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI86SL42EC-AS1R from Skyworks Solutions is a 4-channel, low-power digital isolator with reinforced isolation (6000 VRMS), AEC-Q100 qualification, and fail-safe default-low output configuration. It operates across 2.25–5.5 V supply rails, delivers 10 ns typical propagation delay, and supports up to 150 Mbps data rate in industrial and automotive systems including battery management and motor control.
For engineers reviewing the SI86SL42EC-AS1R datasheet, SI86SL42EC-AS1R pinout, SI86SL42EC-AS1R application, or SI86SL42EC-AS1R equivalent, this page provides verified technical context, real-world timing behavior, isolation barrier performance, fail-safe logic state definition, and validated alternative options for automotive-grade isolated signal transfer.
Technical Context
The SI86SL42EC-AS1R implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling immediate operation after power-up. It features independent undervoltage lockout (UVLO) on both sides (VDD1/VDD2), with UVLO+ = 2.18 V and UVLO– = 2.05 V, and integrated 100 kΩ weak pulldown on outputs during unpowered states.
It integrates Schmitt-trigger + CMOS threshold inputs for noise immunity, tri-state outputs controlled by EN1/EN2 pins, and selectable fail-safe mode (default-low per ordering code "EC"). Sleep mode is not supported-this is a low-power variant (SL), not a sleep-capable (SM) device.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 4-channel bidirectional isolator (2 forward, 2 reverse) |
| Isolation Rating | 6000 VRMS reinforced insulation per UL 1577; certified to IEC 60747-17 |
| Data Rate | DC to 150 Mbps - supports high-speed serial interfaces including SPI and isolated ADC links |
| Propagation Delay | 10 ns typical - enables tight timing budgets in real-time motor control and power converter feedback loops |
| Supply Voltage | 2.25 V to 5.5 V - interoperable with 3.3 V and 5 V logic domains without level shifters |
| Fail-Safe Output | Default-low (EC suffix) - outputs drive low when VDD1 is unpowered but VDD2 remains active |
| Operating Temp | –40 °C to +125 °C - qualified for under-hood automotive and industrial ambient environments |
Pinout & Package
SI86SL42EC-AS1R is housed in a narrow-body SOIC-16 package (NB SOIC-16) with 8.0 mm creepage/clearance, supporting 6000 VRMS isolation. Pinout matches Si86S642/L42 configuration per Figure 2 of datasheet 206553B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power domain | Supplies and grounds the input-side logic; requires 0.1 µF + 10 µF bypass capacitors |
| A1–A4 | Side A digital I/O | Four isolated input/output channels on primary side; Schmitt-trigger + CMOS thresholds |
| EN1 | Side A output enable | Active-high control: drives all A-side outputs into high-impedance when low |
| VDD2, GND2 | Side B power domain | Supplies and grounds the output-side logic; independent of Side A supply |
| B1–B4 | Side B digital I/O | Four isolated output/input channels on secondary side; matched timing to A-side |
| EN2 | Side B output enable | Active-high control: drives all B-side outputs into high-impedance when low |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Isolation | 6000 VRMS withstand (1 min), certified to UL 1577, VDE 60747-17, CSA 62368-1, CQC GB4943.1 |
| No Startup Initialization | Immediate functional operation after VDD exceeds UVLO+; no firmware or handshake required |
| High Noise Immunity | 100 kV/µs transient immunity + Schmitt-trigger inputs reject fast EFT/burst noise |
| Low-Power Architecture | 0.25 mA/channel lower quiescent current vs. Si86S6x family; optimized for always-on automotive modules |
| Fail-Safe Default State | EC ordering option ensures B-side outputs drive low during A-side power loss - critical for safe shutdown in BMS |
Applications
| Motor Control Systems | Battery Management Systems (BMS) |
|---|---|
Use Scenario: Isolating gate driver signals and current-sense feedback in 3-phase inverter stages. IC Role / Device Role / Timing Role: Bidirectional signal isolator transferring PWM commands and fault status across high-voltage barriers. Use Value: 10 ns propagation delay enables precise dead-time control; 6000 VRMS rating supports 800 V DC bus compliance. | Use Scenario: Isolating cell voltage monitoring and balancing control between high-voltage battery stack and MCU domain. IC Role / Device Role / Timing Role: Low-power, fail-safe isolator ensuring safe default-low signaling during MCU brownout or communication loss. Use Value: EC-specified default-low output prevents unintended cell discharge or relay activation during power interruption. |
| Onboard Chargers (OBC) | Traction Inverters |
Use Scenario: Isolating AC-DC controller signals and DC-link voltage sensing in bidirectional OBC topologies. IC Role / Device Role / Timing Role: 4-channel isolator handling isolated gate drive, analog feedback, and safety interlock signals. Use Value: AEC-Q100 qualification and –40 °C to +125 °C operation ensure reliability in under-hood thermal cycling. | Use Scenario: Transmitting torque command, phase current feedback, and fault reporting between vehicle controller and inverter module. IC Role / Device Role / Timing Role: High-speed, reinforced isolator enabling deterministic CAN-to-PWM translation and real-time protection response. Use Value: 150 Mbps capability supports time-critical safety protocols like ASIL-B compliant diagnostics over isolated links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8642ED-AS1R | Same pinout, 4-channel, 6000 VRMS, but default-high (ED) fail-safe mode | Suitable where system safety requires default-high assertion (e.g., enable lines) | Select when fail-safe logic polarity must be inverted; identical timing, power, and isolation specs |
| ADUM140D0BRIZ | 4-channel, 5000 VRMS, 150 Mbps, but non-AEC-Q100; different pinout and higher IDD | Limited to industrial use; lacks automotive qualification and reinforced insulation certification | Use only in non-automotive designs where 5000 VRMS suffices and layout allows rework for ADI pin mapping |
Compared with SI86SL42EC-AS1R, SI8642ED-AS1R offers identical performance with inverted fail-safe polarity, while ADUM140D0BRIZ trades automotive qualification and reinforced isolation for broader industrial availability but requires PCB redesign.
Availability
SI86SL42EC-AS1R is available at Aetrix Electronics and suitable for battery management systems, traction inverters, onboard chargers, and industrial motor drives requiring stable component supply across extended temperature and high-reliability automotive programs.
Supply support for SI86SL42EC-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 Si86S6xx/Lxx family-including SI86SL42EC-AS1R-is engineered for high-reliability isolation in automotive electrification and industrial power systems, emphasizing AEC-Q100 compliance, reinforced safety certification, and low-power robustness.
FAQ
What is the isolation voltage rating of SI86SL42EC-AS1R and which safety standards does it meet?
SI86SL42EC-AS1R provides 6000 VRMS reinforced isolation per UL 1577 for 1 minute and is certified to IEC 60747-17, CSA 62368-1, VDE 60747-17, and CQC GB4943.1. These approvals validate its use in safety-critical automotive and industrial systems where reinforced insulation is mandated for functional safety compliance.
Does SI86SL42EC-AS1R support sleep mode or low-power shutdown via external pin control?
No, SI86SL42EC-AS1R does not support sleep mode. It belongs to the SL (low-power) subfamily-not the SM (sleep-mode) series. Its low quiescent current is achieved through architectural optimization, not pin-controlled sleep entry. The SMb pin is absent; only EN1 and EN2 are present for tri-state output control.
What does the "EC" suffix in SI86SL42EC-AS1R indicate, and how does it affect system behavior?
The "EC" suffix denotes the fail-safe default-low output configuration. When VDD1 is unpowered but VDD2 remains active, all B-side outputs of SI86SL42EC-AS1R drive low. This behavior is hard-coded per ordering option and ensures safe deactivation of downstream drivers or relays during primary-side power loss.
Can SI86SL42EC-AS1R replace optocouplers in existing designs without layout changes?
Yes-SI86SL42EC-AS1R uses NB SOIC-16 packaging with industry-standard footprint and creepage, enabling direct optocoupler replacement in most cases. However, verify bypass capacitor placement (0.1 µF + 10 µF per side) and confirm that EN1/EN2 logic levels match existing control signals before drop-in substitution.
What is the maximum data rate supported by SI86SL42EC-AS1R, and what timing parameters enable high-speed operation?
SI86SL42EC-AS1R supports up to 150 Mbps with 10 ns typical propagation delay and 3.5 ns pulse width distortion. Its RF-based modulation architecture eliminates startup latency and delivers consistent timing across temperature and voltage, making it suitable for SPI, isolated ADC interfaces, and real-time control loops.
SI86SL42EC-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:
- 2/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 150kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 18ns, 18ns
- Pulse Width Distortion (Max):
- 7ns
- 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
SI86SL42EC-AS1R FAQ
1.How can I place an order for SI86SL42EC-AS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SL42EC-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 SI86SL42EC-AS1R reliable?
The price and inventory of SI86SL42EC-AS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SL42EC-AS1R is usually 5 days.
3.What payment methods are accepted for SI86SL42EC-AS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SL42EC-AS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SL42EC-AS1R?
SI86SL42EC-AS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SL42EC-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 SI86SL42EC-AS1R?
For technical support, including SI86SL42EC-AS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SL42EC-AS1R requirements.
6.How does Aetrix verify that SI86SL42EC-AS1R is sourced from the original manufacturer or authorized distributors?
All SI86SL42EC-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 SI86SL42EC-AS1R meets industry standards.
7.What is the process for return or replacement of SI86SL42EC-AS1R?
All SI86SL42EC-AS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI86SL42EC-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 SI86SL42EC-AS1R part is unused and in its original packaging.
Return procedure for SI86SL42EC-AS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SL42EC-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…
