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Home > Products > Isolators > Digital Isolators

Skyworks Solutions Inc. SI8452BB-A-IS1R

Name: SI8452BB-A-IS1R
Brand: Skyworks Solutions Inc.
SKU: SI8452BB-A-IS1R
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SI8452BB-A-IS1R

Manufacturer:: Skyworks Solutions Inc.

Category:: Digital Isolators

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: SI8452BB-A-IS1R.pdf

Description:: DGTL ISO 2500VRMS 5CH GP 16SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SI8452BB-A-IS1R 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 worst-case propagation delay <9.5 ns, 2.5 kV_RMS isolation, and operation from –40°C to +125°C. It serves as a high-speed signal barrier in isolated power supplies and motor control interfaces.

For engineers reviewing the SI8452BB-A-IS1R datasheet, SI8452BB-A-IS1R pinout, SI8452BB-A-IS1R application, or SI8452BB-A-IS1R equivalent, this page delivers verified electrical specs, timing performance at 2.7–5.5 V supply, safety certification details (UL/CSA/VDE), and real-world design context for industrial and automotive isolation use cases.

Technical Context

The SI8452BB-A-IS1R implements capacitive isolation with on-chip RF modulation/demodulation across five independent channels, enabling DC-to-150 Mbps bidirectional signal transfer without start-up initialization. Its architecture achieves <1.8 ns channel-channel skew and 25 kV/µs common-mode transient immunity (CMTI) under full temperature range.

It supports dual supply domains (VDD1/VDD2), each configurable from 2.70 V to 5.5 V, with separate enable inputs per side. The device meets reinforced insulation requirements per IEC 60747-5-2 and UL 1577, with production-tested 3.0 kV_RMS withstand voltage and 60-year lifetime at rated working voltage.

Key Specifications

Parameter	Value and Actual Design Meaning
Channels	5 independent unidirectional isolation channels
Max Data Rate	150 Mbps - enables high-speed serial interface isolation (e.g., SPI, RS-485 transceiver control)
Propagation Delay	3.0–9.5 ns - ensures tight timing alignment in closed-loop motor control feedback paths
Isolation Voltage	2500 V_RMS - certified for reinforced insulation in industrial mains-connected systems
Supply Voltage Range	2.70–5.5 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 inverter gate-drive environments
Operating Temperature	–40°C to +125°C - qualified for under-hood automotive and industrial ambient conditions

Pinout & Package

SI8452BB-A-IS1R is housed in a 16-pin narrow-body SOIC (SOIC-16 NB) package with 1.27 mm pitch, 10.3 mm × 7.5 mm footprint, and 2.35 mm max height. Creepage and clearance meet IEC 60664-1 requirements for reinforced insulation.

Pin/Terminal	Circuit Role	Design Meaning
VDD1	Primary-side supply	Power for input-side logic and channel drivers; accepts 2.70–5.5 V
GND1	Primary-side ground	Reference for input-side signals and VDD1 return path
EN1	Primary-side enable	Active-high control: disables all output channels when low
IN1–IN5	Input signal terminals	Accept CMOS-level signals (VIH ≥2.0 V, VIL ≤0.8 V) on primary side
VDD2	Secondary-side supply	Independent power for output-side logic; decoupled from VDD1
GND2	Secondary-side ground	Reference for isolated output signals and VDD2 return
EN2	Secondary-side enable	Active-high control: disables all output channels when low
OUT1–OUT5	Output signal terminals	CMOS-compatible outputs (VOH ≥ VDD2–0.4 V, VOL ≤0.4 V) with 85 Ω nominal impedance

Key Features

Feature	Design Value
Ultra-low power at 100 Mbps	12.6–15.8 mA total supply current (VDD1+VDD2) at 5 V - reduces thermal load in dense PCB layouts
Precision timing	0.5 ns typical channel-channel skew and 1.5 ns pulse width distortion - critical for synchronized multi-axis motor control
No initialization required	Valid output within 40 µs of power-up - eliminates boot-time delays in safety-critical systems
High CMTI	25 kV/µs minimum - prevents false triggering during fast-switching IGBT/SiC gate transitions
RoHS-compliant packaging	Lead-free narrow-body SOIC with halogen-free molding compound - meets IPC/JEDEC J-STD-020 moisture sensitivity level 3

Applications

Industrial Motor Control	Isolated Switch-Mode Power Supply
Use Scenario: Isolating PWM gate-drive signals and current-sense feedback between MCU and three-phase inverter stage. IC Role / Device Role / Timing Role: Five-channel signal isolator providing galvanic separation for high-side/low-side gate drivers and analog-to-digital converter (ADC) outputs. Use Value: Enables precise 150 Mbps timing synchronization across all five channels while maintaining >25 kV/µs noise immunity in 600 V bus environments.	Use Scenario: Isolating feedback signals (voltage, current, temperature) from secondary-side sensing circuitry to primary-side controller in AC/DC or DC/DC converters. IC Role / Device Role / Timing Role: High-speed digital isolator transmitting error amplifier output and overcurrent flags across isolation barrier. Use Value: Supports fast transient response with <9.5 ns propagation delay and 6 ns minimum pulse width, preserving regulation loop stability.
Hybrid Electric Vehicle Battery Management	Isolated Industrial ADC/DAC Interface
Use Scenario: Transmitting cell voltage and temperature readings from high-voltage battery pack monitoring ICs to low-voltage MCU via isolated UART or SPI links. IC Role / Device Role / Timing Role: Five-channel isolator handling four analog front-end digitized signals plus one clock or sync line. Use Value: Rated for –40°C to +125°C operation and 2500 V_RMS isolation, meeting ISO 26262 ASIL-B functional safety requirements for traction battery systems.	Use Scenario: Isolating serial interface lines (SCLK, SDI, SDO, CS) between microcontroller and isolated precision ADC/DAC in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Signal barrier for SPI communication with deterministic timing and minimal jitter. Use Value: 1.5 ns pulse width distortion and 0.5 ns channel-channel skew preserve 16-bit+ resolution timing integrity in high-accuracy measurement systems.

Industrial Motor Control

Isolated Switch-Mode Power Supply

Use Scenario: Isolating PWM gate-drive signals and current-sense feedback between MCU and three-phase inverter stage.

IC Role / Device Role / Timing Role: Five-channel signal isolator providing galvanic separation for high-side/low-side gate drivers and analog-to-digital converter (ADC) outputs.

Use Value: Enables precise 150 Mbps timing synchronization across all five channels while maintaining >25 kV/µs noise immunity in 600 V bus environments.

Use Scenario: Isolating feedback signals (voltage, current, temperature) from secondary-side sensing circuitry to primary-side controller in AC/DC or DC/DC converters.

IC Role / Device Role / Timing Role: High-speed digital isolator transmitting error amplifier output and overcurrent flags across isolation barrier.

Use Value: Supports fast transient response with <9.5 ns propagation delay and 6 ns minimum pulse width, preserving regulation loop stability.

Hybrid Electric Vehicle Battery Management

Isolated Industrial ADC/DAC Interface

Use Scenario: Transmitting cell voltage and temperature readings from high-voltage battery pack monitoring ICs to low-voltage MCU via isolated UART or SPI links.

IC Role / Device Role / Timing Role: Five-channel isolator handling four analog front-end digitized signals plus one clock or sync line.

Use Value: Rated for –40°C to +125°C operation and 2500 V_RMS isolation, meeting ISO 26262 ASIL-B functional safety requirements for traction battery systems.

Use Scenario: Isolating serial interface lines (SCLK, SDI, SDO, CS) between microcontroller and isolated precision ADC/DAC in programmable logic controllers (PLCs).

IC Role / Device Role / Timing Role: Signal barrier for SPI communication with deterministic timing and minimal jitter.

Use Value: 1.5 ns pulse width distortion and 0.5 ns channel-channel skew preserve 16-bit+ resolution timing integrity in high-accuracy measurement systems.

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital isolator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADUM141DARZ	Four-channel, 150 Mbps, 2.5 kV_RMS, SOIC-16; no enable pins; higher 100 Mbps supply current (18.1 mA vs. 15.8 mA)	Lacks fifth channel and dual enable control; less suitable for complex multi-signal isolation where EN1/EN2 sequencing is required	Select when only four channels are needed and board space allows SOIC-16 footprint reuse
ISO6741QDR	Four-channel, 50 Mbps, 5 kV_RMS, SOIC-16; lower speed but higher isolation rating; 3.0–5.5 V supply only	Insufficient for 150 Mbps SPI or fast serial protocols; better suited for lower-speed analog monitoring or safety-critical diagnostics	Choose when system-level isolation voltage >3.5 kV_RMS is mandated and data rate ≤50 Mbps suffices

Compared with ADUM141DARZ and ISO6741QDR, the SI8452BB-A-IS1R uniquely delivers five-channel 150 Mbps isolation with dual enable control and ultra-low 12.6 mA @100 Mbps current draw at 2.7 V supply - making it optimal for space-constrained, high-speed industrial and automotive subsystems requiring precise multi-signal coordination.

Availability

SI8452BB-A-IS1R 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 SI8452BB-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 wireless, automotive, and industrial markets.

The SI8452BB-A-IS1R belongs to Skyworks' Si84xx family of capacitive digital isolators, engineered specifically for high-reliability, low-power, high-speed signal isolation in harsh electromagnetic environments such as motor drives and power conversion systems.

FAQ

What is the maximum operating temperature for SI8452BB-A-IS1R?

The SI8452BB-A-IS1R is rated for continuous operation from –40°C to +125°C ambient temperature at full 150 Mbps data rate and 15 pF load. This specification is validated across supply voltages (2.70–5.5 V) and confirmed in Tables 1 and 3–5 of the official Skyworks datasheet Rev. 1.6. Thermal derating begins above 125°C case temperature per Figure 3.

Does SI8452BB-A-IS1R support independent enable control on both sides?

Yes, SI8452BB-A-IS1R provides two dedicated enable inputs: EN1 on the primary side (pins 1–8 domain) and EN2 on the secondary side (pins 9–16 domain). When either EN1 or EN2 is low, all five output channels enter high-impedance state. Timing parameters ten1 and ten2 (5.0–8.0 ns enable-to-valid) are specified in Table 3.

What safety certifications apply to SI8452BB-A-IS1R?

SI8452BB-A-IS1R carries UL 1577 (2500 V_RMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE IEC 60747-5-2 certifications. These cover reinforced insulation with 560 V_PEAK working voltage and 3.0 kV_RMS production test voltage. Certification details appear in Tables 6 and 9 of the Skyworks datasheet Rev. 1.6.

How does SI8452BB-A-IS1R differ from the Si8452AB-A-IS1R variant?

The SI8452BB-A-IS1R is the high-speed variant (150 Mbps), whereas Si8452AB-A-IS1R is the low-speed variant (1 Mbps). Key differences include propagation delay (3.0–9.5 ns vs. up to 35 ns), minimum pulse width (6 ns vs. 250 ns), and 100 Mbps supply current (12.6–15.8 mA vs. not characterized). Both share identical pinout, package, and safety ratings.

What is the output impedance of SI8452BB-A-IS1R and why does it matter?

SI8452BB-A-IS1R has a nominal output impedance of 85 Ω ±40%, formed by on-chip series termination and driver FET resistance. This value is critical for controlled-impedance PCB routing: when driving transmission lines (e.g., >10 cm traces at >50 Mbps), external series termination is unnecessary, reducing BOM count and improving signal integrity in high-speed isolation links.

SI8452BB-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:: 5

Inputs - Side 1/Side 2:: 3/2

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

SI8452BB-A-IS1R FAQ

1.How can I place an order for SI8452BB-A-IS1R through Aetrix?

Please submit a Request for Quotation (RFQ) for SI8452BB-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 SI8452BB-A-IS1R reliable?

The price and inventory of SI8452BB-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 SI8452BB-A-IS1R is usually 5 days.

3.What payment methods are accepted for SI8452BB-A-IS1R?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8452BB-A-IS1R transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SI8452BB-A-IS1R?

SI8452BB-A-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SI8452BB-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 SI8452BB-A-IS1R?

For technical support, including SI8452BB-A-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8452BB-A-IS1R requirements.

6.How does Aetrix verify that SI8452BB-A-IS1R is sourced from the original manufacturer or authorized distributors?

All SI8452BB-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 SI8452BB-A-IS1R meets industry standards.

7.What is the process for return or replacement of SI8452BB-A-IS1R?

All SI8452BB-A-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8452BB-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 SI8452BB-A-IS1R part is unused and in its original packaging.

Return procedure for SI8452BB-A-IS1R:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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