Skyworks Solutions Inc. SI8662EB-B-IUR

Overview

SI8662EB-B-IUR from Skyworks is a six-channel digital isolator with 4 input channels on VDD1 side and 2 input channels on VDD2 side, supporting up to 150 Mbps data rate, <10 ns propagation delay, and 2.5 kVRMS isolation rating in QSOP-16 package. It features Schmitt trigger inputs, selectable high-default fail-safe mode, and operates from 2.5–5.5 V supplies across –40 to 125 °C for industrial motor control and isolated power supply monitoring.

For engineers reviewing the SI8662EB-B-IUR datasheet, SI8662EB-B-IUR pinout, SI8662EB-B-IUR application, or SI8662EB-B-IUR equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in isolated ADC interfaces and battery management systems, and confirmed alternative parts with documented functional and packaging differences.

Technical Context

The SI8662EB-B-IUR implements RF-based on/off keying modulation across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical degradation. Its dual-supply architecture supports independent 2.5–5.5 V operation on both sides with separate undervoltage lockout (UVLO) monitors per side.

Each channel uses Schmitt-trigger inputs for >400 mV hysteresis and delivers 50 Ω nominal output impedance with <2.5 ns rise/fall times. The device achieves 50 kV/µs common-mode transient immunity and maintains timing stability over temperature due to its CMOS-based RF transceiver design.

Key Specifications

Pinout & Package

SI8662EB-B-IUR is housed in a RoHS-compliant QSOP-16 package (5.3 mm × 10.2 mm, 1.0 mm height) with 0.635 mm lead pitch and 8 mm creepage distance. Pin numbering follows standard QSOP convention with GND1/VDD1 on left side and GND2/VDD2 on right side.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SI8662EB-B-IUR, SI8662BB-B-IUR provides identical performance except for inverted fail-safe polarity, while ADUM6602ARWZ trades off higher integration (integrated iso-power) for larger size and reduced data-rate margin (100 Mbps vs. 150 Mbps).

Availability

SI8662EB-B-IUR is available at Aetrix Electronics and suitable for industrial motor control, battery management systems, and on-board charger designs requiring stable component supply, long-term lifecycle support, and AEC-Q100-qualified isolation performance.

Supply support for SI8662EB-B-IUR 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 leader in analog semiconductors, specializing in RF, wireless infrastructure, and high-reliability isolation technologies with over 30 years of RF design expertise.

The Si866x family was engineered specifically for high-noise industrial and automotive environments where legacy optocouplers fail-delivering ultra-low power, precise timing, and reinforced insulation in compact packages.

FAQ

What is the isolation voltage rating and safety certification status of SI8662EB-B-IUR?

SI8662EB-B-IUR is rated for 2.5 kVRMS isolation and certified to UL 1577 (1 minute), CSA Component Acceptance Notice 5A, VDE 0884-10, and CQC GB4943.1 standards. These approvals confirm reinforced insulation suitability for industrial and automotive end-equipment requiring functional or basic isolation per IEC 62368-1 and IEC 60601-1.

Does SI8662EB-B-IUR require external components for stable operation?

Yes, SI8662EB-B-IUR requires a 0.1 µF ceramic bypass capacitor between VDD1 and GND1, and another between VDD2 and GND2, placed as close as possible to the respective pins. No pull-up/pull-down resistors are needed-the high-default fail-safe mode is implemented internally via integrated input/output pull-ups.

How does the fail-safe mode function in SI8662EB-B-IUR during power loss?

In SI8662EB-B-IUR, the fail-safe mode is factory-configured to drive all outputs high when VDD1 is unpowered and VDD2 remains active. This behavior is hardwired-not software-controllable-and ensures safety-critical signals (e.g., gate enable) default to a known safe state during primary-side brownout or shutdown.

Can SI8662EB-B-IUR operate with mixed supply voltages, such as 3.3 V on VDD1 and 5 V on VDD2?

Yes, SI8662EB-B-IUR supports independent supply voltages from 2.5 V to 5.5 V on each side. Operating VDD1 at 3.3 V and VDD2 at 5 V is fully supported per datasheet Table 4.1, enabling seamless interfacing between low-voltage MCUs and 5 V analog or power-stage circuitry without level shifters.

What is the maximum achievable data rate for each channel of SI8662EB-B-IUR?

SI8662EB-B-IUR supports up to 150 Mbps per channel, verified across temperature (–40 to 125 °C) and supply voltage (2.5–5.5 V). This rate is guaranteed for all six channels simultaneously, as confirmed in Table 4.2 "Timing Characteristics" of the official Skyworks datasheet (Rev. 206330A).