My Inquiry
My Account
Skyworks Solutions Inc. SI8461BB-A-IS1R
- Part No.:
- SI8461BB-A-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8461BB-A-IS1R.pdf
- Description:
- DGTL ISO 2500VRMS 6CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,699
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI8461BB-A-IS1R from Skyworks Solutions is a six-channel, ultra-low-power digital isolator in a 16-pin narrow-body SOIC package, supporting up to 150 Mbps data rate with worst-case propagation delay under 9.5 ns, <1.5 ns pulse width distortion, and 0.5 ns channel-to-channel skew - deployed in isolated ADC interfaces and motor control gate drivers.
For engineers reviewing the SI8461BB-A-IS1R datasheet, SI8461BB-A-IS1R pinout, SI8461BB-A-IS1R application, or SI8461BB-A-IS1R equivalent, key selection criteria include its 2.7–5.5 V dual-supply operation, 25 kV/µs common-mode transient immunity, 2500 VRMS isolation rating, and guaranteed timing performance across –40°C to +125°C at full speed.
Technical Context
The SI8461BB-A-IS1R implements capacitive isolation with on-chip RF modulation/demodulation circuitry, enabling high-speed signal transfer without magnetic coupling or optoelectronic degradation. It features independent primary-side (VDD1) and secondary-side (VDD2) supplies, each configurable from 2.70 V to 5.5 V, and supports asymmetric supply configurations.
All six channels are unidirectional with fixed input-to-output directionality per channel (as defined by pin mapping), and no start-up initialization is required - valid output data appears within 40 µs of power application. The device achieves <6 ns minimum pulse width and maintains <3 ns propagation delay skew across temperature and voltage extremes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 150 Mbps - enables real-time feedback in servo motor control and high-resolution isolated ADC sampling. |
| Propagation Delay | 3.0–9.5 ns (typ/max) - ensures sub-10 ns timing fidelity for PWM synchronization in inverters. |
| Channel-Channel Skew | 0.5 ns (typ) - critical for multi-phase gate driver timing alignment in three-phase motor drives. |
| Common-Mode Transient Immunity | 25 kV/µs - sustains reliable operation in noisy industrial environments with fast-switching SiC/GaN power stages. |
| Isolation Voltage | 2500 VRMS (1 min) - certified for reinforced insulation per UL 1577, CSA Component Notice 5A, and VDE IEC 60747-5-2. |
| Supply Range | 2.70–5.5 V on both VDD1 and VDD2 - supports interoperability with 3.3 V logic and 5 V microcontrollers without level shifters. |
| Power Consumption | <9.0 mA per channel at 100 Mbps (5 V) - reduces thermal load in densely packed isolated power supply controllers. |
Pinout & Package
SI8461BB-A-IS1R is housed in a RoHS-compliant 16-pin narrow-body SOIC package (7.5 mm × 10.3 mm, 1.27 mm pitch) with creepage and clearance ≥3.9 mm, qualified for reinforced insulation per IEC 60747-5-2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 4, 6, 7, 9 | Primary-side inputs (IN1–IN6) | Digital input signals referenced to VDD1; accept 2.0 V min VIH and 0.8 V max VIL. |
| 2, 5, 8, 10, 11, 13 | Secondary-side outputs (OUT1–OUT6) | CMOS-compatible outputs referenced to VDD2; drive 4 mA loads with VOL ≤ 0.4 V. |
| 12, 15 | VDD1 and VDD2 | Independent power supplies for input and output sides; each supports 2.70–5.5 V with bypass capacitor required. |
| 14, 16 | GND1 and GND2 | Galvanically isolated ground references - must not be connected externally to preserve isolation barrier integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power at high speed | 9.0 mA per channel @ 100 Mbps (5 V), enabling thermally constrained designs like compact EV battery management systems. |
| Precision timing stability | 0.5 ns typical channel-channel skew and 1.5 ns pulse width distortion - preserves signal integrity in time-critical feedback loops. |
| No initialization requirement | Valid output within 40 µs of power-on - eliminates boot-time delays in safety-critical industrial PLCs and UPS systems. |
| High CMTI robustness | 25 kV/µs common-mode transient immunity - prevents false triggering during fast dV/dt events in SiC-based inverters. |
| Wide temperature operation | Full 150 Mbps performance from –40°C to +125°C - suitable for under-hood automotive and industrial motor drive applications. |
Applications
| Motor Control Gate Driver Isolation | Isolated ADC Interface |
|---|---|
|
Use Scenario: Isolating PWM signals between MCU and high-voltage IGBT/SiC gate drivers in 3-phase inverters. IC Role / Device Role / Timing Role: Six unidirectional channels deliver synchronized, low-skew gate drive enable/disable signals across isolation barrier. Use Value: 0.5 ns channel-channel skew and 9.5 ns max propagation delay ensure precise phase alignment and prevent shoot-through. |
Use Scenario: Transmitting serial data from isolated sigma-delta ADCs (e.g., AD7403) to host processor in energy metering. IC Role / Device Role / Timing Role: High-speed, low-jitter digital isolator preserving clock/data integrity over isolation boundary. Use Value: 150 Mbps capability supports oversampled 24-bit ADC data streams with minimal latency and jitter accumulation. |
| Industrial PLC Digital I/O Isolation | Isolated Switch-Mode Power Supply Feedback |
|
Use Scenario: Galvanic isolation of discrete sensor inputs and actuator outputs in programmable logic controllers. IC Role / Device Role / Timing Role: Six independent channels isolate field-side digital inputs (24 V) from controller-side 3.3 V logic. Use Value: 2.7–5.5 V dual-supply flexibility allows direct interface to both legacy 24 V sensors and modern low-voltage MCUs. |
Use Scenario: Isolating error amplifier output and PWM modulator feedback in isolated DC-DC converters. IC Role / Device Role / Timing Role: Unidirectional isolation of analog-derived digital signals (e.g., isolated error flag or soft-start command). Use Value: Sub-10 ns propagation delay enables fast-loop response in digitally controlled isolated PSUs without added phase lag. |
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, but uses iCoupler magnetic isolation; higher power (12.5 mA/ch @ 100 Mbps) and larger SOIC-16W package. | Less suited for space-constrained layouts; lower CMTI (100 kV/µs) but higher isolation lifetime reliability. | Prefer when long-term reliability under continuous high-voltage stress outweighs board area and power constraints. |
| ISO6760FRDWR | 6-channel, 50 Mbps max, 5000 VRMS, capacitive isolation; wider SOIC-16 package; 3.0–5.5 V supply only; 10 ns max propagation delay. | Not suitable for 100+ Mbps applications; better for high-isolation-voltage safety-critical systems (e.g., medical). | Choose when 5 kVRMS working voltage is mandatory and data rate requirements are ≤50 Mbps. |
Compared with ADUM161N0BRZ-RL7 and ISO6760FRDWR, SI8461BB-A-IS1R delivers the optimal balance of speed (150 Mbps), ultra-low power (<9 mA/ch), compact narrow-body SOIC footprint, and 2500 VRMS certification - making it ideal for high-density, thermally sensitive industrial and automotive power electronics where timing precision and layout efficiency are critical.
Availability
SI8461BB-A-IS1R is available at Aetrix Electronics and suitable for industrial motor control, isolated power supply feedback, and high-speed data acquisition requiring stable component supply and long-term lifecycle support.
Supply support for SI8461BB-A-IS1R 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 for high-performance wireless and industrial systems.
The Si846x family was designed specifically for high-speed, low-power galvanic isolation in demanding power electronics applications - emphasizing timing accuracy, EMI resilience, and extended temperature operation without optical or magnetic compromises.
FAQ
What is the maximum operating temperature for SI8461BB-A-IS1R at 150 Mbps?
The SI8461BB-A-IS1R is fully specified for 150 Mbps operation across –40°C to +125°C ambient temperature, with all timing parameters (propagation delay, skew, pulse width distortion) guaranteed over this range when loaded with 15 pF and powered at 5 V ±10%. This makes SI8461BB-A-IS1R suitable for under-hood automotive and industrial motor drive environments where thermal margins are tight.
Does SI8461BB-A-IS1R require external components for basic operation?
Yes - SI8461BB-A-IS1R requires only 0.1 µF ceramic bypass capacitors placed close to each VDD pin (pins 12 and 15) and grounded to their respective isolated grounds (pins 14 and 16). No pull-up/down resistors, level shifters, or initialization firmware are needed, as SI8461BB-A-IS1R powers up with valid output states within 40 µs.
How many isolation channels does SI8461BB-A-IS1R provide, and what is their directionality?
SI8461BB-A-IS1R provides six unidirectional isolation channels: pins 1/2, 3/5, 4/8, 6/10, 7/11, and 9/13 form IN1→OUT1 through IN6→OUT6 pairs. Directionality is fixed per channel and cannot be reversed - unlike some programmable isolators, SI8461BB-A-IS1R does not support bidirectional or configurable channel mapping.
Is SI8461BB-A-IS1R certified for reinforced insulation in safety-critical systems?
Yes - SI8461BB-A-IS1R is certified for reinforced insulation per UL 1577 (2500 VRMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE IEC 60747-5-2. Its 3.9 mm minimum creepage/clearance, 600 VRMS PTI, and 10¹² Ω input-output resistance meet requirements for functional safety architectures up to SIL-3 in industrial control and EV subsystems.
Can SI8461BB-A-IS1R operate with different supply voltages on VDD1 and VDD2?
Yes - SI8461BB-A-IS1R supports independent 2.70–5.5 V supplies on VDD1 (pin 12) and VDD2 (pin 15), enabling mixed-voltage system interfacing (e.g., 3.3 V MCU side to 5 V FPGA side). Electrical characteristics including VIH/VIL thresholds and VOL/VOH levels scale accordingly, and timing specs remain valid across all supported voltage combinations.
SI8461BB-A-IS1R 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:
- Not For New Designs
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 6
- Inputs - Side 1/Side 2:
- 5/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs (Typ)
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 9.5ns, 9.5ns
- Pulse Width Distortion (Max):
- 2.5ns
- Rise / Fall Time (Typ):
- 3.8ns, 2.8ns
- Voltage - Supply:
- 2.7V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI8461BB-A-IS1R FAQ
1.How can I place an order for SI8461BB-A-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8461BB-A-IS1R 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 SI8461BB-A-IS1R reliable?
The price and inventory of SI8461BB-A-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8461BB-A-IS1R is usually 5 days.
3.What payment methods are accepted for SI8461BB-A-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8461BB-A-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8461BB-A-IS1R?
SI8461BB-A-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8461BB-A-IS1R 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 SI8461BB-A-IS1R?
For technical support, including SI8461BB-A-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8461BB-A-IS1R requirements.
6.How does Aetrix verify that SI8461BB-A-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8461BB-A-IS1R 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 SI8461BB-A-IS1R meets industry standards.
7.What is the process for return or replacement of SI8461BB-A-IS1R?
All SI8461BB-A-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8461BB-A-IS1R, 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 SI8461BB-A-IS1R part is unused and in its original packaging.
Return procedure for SI8461BB-A-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8461BB-A-IS1R 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…
