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Skyworks Solutions Inc. SI8442BA-D-IS1R
- Part No.:
- SI8442BA-D-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8442BA-D-IS1R.pdf
- Description:
- DGTL ISO 1000VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,075
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Product details
Overview
SI8442BA-D-IS1R from Skyworks Solutions is a quad-channel, ultra-low-power digital isolator in a 16-pin wide-body SOIC package, supporting up to 150 Mbps data rate with worst-case propagation delay <9.5 ns, 0.5 ns channel-channel skew, and 25 kV/µs common-mode transient immunity. It operates across 2.70–5.5 V supply rails and delivers <11.8 mA per side at 100 Mbps (5 V), enabling high-speed isolated communication in motor control and power inverters.
For engineers reviewing the SI8442BA-D-IS1R datasheet, SI8442BA-D-IS1R pinout, SI8442BA-D-IS1R application, or SI8442BA-D-IS1R equivalent, key selection criteria include its 2.5 kVRMS reinforced isolation rating (UL/CSA/VDE certified), AEC-Q100 qualification, 6 ns minimum pulse width, and compatibility with industrial-temperature (–40 to +125 °C) operation at full data rate.
Technical Context
The SI8442BA-D-IS1R implements capacitive isolation using on-chip RF modulation/demodulation, eliminating magnetic or optical coupling limitations. Its four independent bidirectional channels support asymmetric supply configurations (VDD1 ≠ VDD2), with integrated enable inputs for output tri-state control and start-up time under 40 µs.
It features precise timing performance: typical pulse width distortion of 1.5 ns, propagation delay skew ≤3.0 ns, and output impedance of 85 Ω ±40% - enabling direct interface with controlled-impedance PCB traces without external termination in most 50–100 Ω systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 150 Mbps - supports high-speed serial interfaces including SPI, RS-485, and isolated ADC/DAC links without protocol overhead. |
| Propagation Delay | 3.0–9.5 ns - ensures tight timing margins in real-time control loops such as servo drives and digital power management. |
| Channel-Channel Skew | 0.5–1.8 ns - enables synchronous sampling across multiple isolated analog channels or parallel data buses. |
| Isolation Voltage | 2500 VRMS (1 min) - meets reinforced insulation requirements for industrial and automotive safety standards (UL 1577, CSA 5A, VDE 0884-2). |
| Supply Range | 2.70–5.5 V per side - allows interoperability between 3.3 V logic domains and 5 V microcontrollers or gate drivers. |
| CMTI | 25 kV/µs - maintains signal integrity in noisy environments like motor drives and switch-mode power supplies. |
| Power Consumption | 11.8 mA per side @ 100 Mbps / 5 V - reduces thermal load and enables battery-backed or energy-constrained isolated subsystems. |
Pinout & Package
SI8442BA-D-IS1R is housed in a 16-pin wide-body SOIC package (WB-SOIC-16) with creepage/clearance ≥8.0 mm, rated for 2500 VRMS isolation. Pin assignments follow standard Si844x quad-channel layout with dual VDD supplies, independent enable inputs, and symmetrical I/O channel pairing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Primary-side input/output channels A–D | Unidirectional or bidirectional data paths referenced to VDD1; compatible with CMOS logic thresholds (VIH ≥2.0 V, VIL ≤0.8 V). |
| 5, 12 | VDD1, VDD2 | Independent 2.70–5.5 V supplies for primary and secondary sides - enables level-shifting and fault-domain separation. |
| 6, 7, 8, 9 | Secondary-side input/output channels A–D | Galvanically isolated mirror of pins 1–4; outputs drive loads up to 4 mA with VOH ≥VDD2–0.4 V. |
| 10, 11 | EN1, EN2 | Active-high enable inputs controlling output state of respective channel pairs; tri-state outputs when low (ten2 ≤9.2 ns). |
| 13, 14, 15, 16 | GND1, GND2 | Separate ground references for each isolation domain - mandatory for maintaining isolation barrier integrity and noise rejection. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | Valid data appears within 40 µs of power application - eliminates boot-time delays in safety-critical or fast-restart systems. |
| Precise timing control | 0.5 ns typical channel-channel skew and 1.5 ns pulse width distortion - supports deterministic timing in closed-loop motor control and digital power converters. |
| Ultra-low power at speed | 11.8 mA per side @ 100 Mbps / 5 V - reduces heat generation and simplifies thermal design in dense PCB layouts. |
| AEC-Q100 qualified | Rated for automotive-grade reliability (Grade 1: –40 to +125 °C) - suitable for hybrid electric vehicle traction inverters and onboard chargers. |
| High EMI immunity | 25 kV/µs CMTI and 60-year life at rated working voltage - ensures robust operation in industrial automation and factory-floor environments. |
Applications
| Industrial Motor Control | Isolated Switch-Mode Power Supply |
|---|---|
Use Scenario: Isolating PWM signals and feedback from gate drivers to MCU in 3-phase inverter stages. IC Role / Device Role / Timing Role: Quad-channel isolator transmitting gate enable, fault status, current sense, and encoder signals across isolation barrier. Use Value: 0.5 ns channel skew enables synchronized switching of IGBTs/MOSFETs; 150 Mbps supports high-resolution encoder interpolation. |
Use Scenario: Providing isolated feedback for voltage regulation and overcurrent protection in DC-DC converters. IC Role / Device Role / Timing Role: Transmitting error amplifier output and primary-side current monitor signals to secondary-side controller. Use Value: 25 kV/µs CMTI prevents false triggering during fast-switching transients; 2.5 kVRMS rating satisfies IEC 62368-1 reinforced insulation requirements. |
| Hybrid Electric Vehicle Inverter | Isolated Data Acquisition |
Use Scenario: Isolating phase current/voltage measurements and control commands between traction inverter and vehicle ECU. IC Role / Device Role / Timing Role: Four independent channels carrying isolated analog front-end outputs and gate driver enable signals. Use Value: AEC-Q100 qualification ensures reliability under automotive thermal cycling; 125 °C ambient operation supports under-hood placement. |
Use Scenario: Interfacing isolated ADCs and DACs with host processors in test equipment and PLC modules. IC Role / Device Role / Timing Role: Transmitting serial data (SPI/I²C) and clock signals across isolation boundary while preserving timing integrity. Use Value: 9.5 ns max propagation delay enables sub-microsecond sampling synchronization; 2.0 pF input-output capacitance minimizes signal coupling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM140D0BRIZ | 4-channel, 150 Mbps, 2.5 kVRMS, 16-pin SOIC narrow body; higher 13.5 mA supply current @ 100 Mbps (5 V) | Lacks AEC-Q100 qualification; narrower creepage (4.01 mm) limits use in high-pollution industrial environments | Preferred where board space is constrained and automotive qualification is not required. |
| ISO6741QDWR | 4-channel, 50 Mbps, 5 kVRMS, 16-pin SOIC wide body; lower speed but higher isolation rating and integrated LDO | Not suitable for >50 Mbps protocols; supports single-supply operation via internal regulator | Selected when enhanced isolation margin (>3.75 kVRMS) and simplified power architecture outweigh speed needs. |
Compared with ADUM140D0BRIZ and ISO6741QDWR, the SI8442BA-D-IS1R uniquely balances 150 Mbps speed, AEC-Q100 compliance, and 2.5 kVRMS isolation in a wide-body SOIC - making it optimal for automotive and industrial real-time control where timing precision and reliability are co-constrained.
Availability
SI8442BA-D-IS1R is available at Aetrix Electronics and suitable for industrial motor control, hybrid electric vehicle inverters, and isolated switch-mode power supplies requiring stable component supply and long-term lifecycle support.
Supply support for SI8442BA-D-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.
The Si844x family was designed for high-reliability, high-speed digital isolation in demanding industrial, automotive, and computing applications - emphasizing low power, precise timing, and regulatory-compliant safety barriers.
FAQ
What is the maximum operating temperature for SI8442BA-D-IS1R at full 150 Mbps data rate?
The SI8442BA-D-IS1R is specified for continuous operation from –40 °C to +125 °C at 150 Mbps, with supply voltages of 2.70–5.5 V on both sides. This rating is validated per Table 1 in the datasheet and applies to both wide-body SOIC packages. Thermal derating is not required within this range, supporting deployment in under-hood automotive and high-ambient industrial settings.
Does SI8442BA-D-IS1R support bidirectional data transmission on each channel?
Yes, SI8442BA-D-IS1R supports bidirectional data transmission per channel, with independent input and output buffers on both sides. Each of the four channels can be configured for directionality via external logic or MCU control - no internal direction register is required. The device does not auto-detect direction; external circuitry must manage signal flow.
What safety certifications apply to SI8442BA-D-IS1R?
SI8442BA-D-IS1R holds UL 1577 (2500 VRMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE 0884-2 (IEC 60747-5-2) certifications. These cover reinforced insulation up to 560 VPEAK working voltage and 2500 VRMS withstand, with production-tested 3000 VRMS for 1 second. Certification documentation is accessible via Skyworks File E257455 (UL), 232873 (CSA), and 5006301-4880-0001 (VDE).
How does the enable function operate on SI8442BA-D-IS1R?
SI8442BA-D-IS1R has two enable inputs (EN1 and EN2) that control output states of channel pairs: EN1 governs channels A/B, EN2 governs C/D. When low, outputs enter high-impedance tri-state mode within ≤9.2 ns (ten2). When high, outputs actively drive based on input logic. Enable functionality is independent of supply sequencing and operates across the full temperature and voltage range.
Is SI8442BA-D-IS1R pin-compatible with other Si844x variants?
Yes, SI8442BA-D-IS1R shares identical pinout and package (16-pin wide-body SOIC) with all Si844x family members, including SI8440, SI8441, and SI8445 variants. Channel count, supply configuration, and enable logic are consistent across the family - only speed grade (A = 1 Mbps, B = 150 Mbps) and revision (D = Revision D) differ. No PCB redesign is needed when migrating within the Si844x-B series.
SI8442BA-D-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:
- 4
- Inputs - Side 1/Side 2:
- 2/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 1000Vrms
- 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
SI8442BA-D-IS1R FAQ
1.How can I place an order for SI8442BA-D-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8442BA-D-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 SI8442BA-D-IS1R reliable?
The price and inventory of SI8442BA-D-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8442BA-D-IS1R is usually 5 days.
3.What payment methods are accepted for SI8442BA-D-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8442BA-D-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8442BA-D-IS1R?
SI8442BA-D-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8442BA-D-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 SI8442BA-D-IS1R?
For technical support, including SI8442BA-D-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8442BA-D-IS1R requirements.
6.How does Aetrix verify that SI8442BA-D-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8442BA-D-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 SI8442BA-D-IS1R meets industry standards.
7.What is the process for return or replacement of SI8442BA-D-IS1R?
All SI8442BA-D-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8442BA-D-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 SI8442BA-D-IS1R part is unused and in its original packaging.
Return procedure for SI8442BA-D-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8442BA-D-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
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