Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

Rev. 1.7 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 11, 2021

Si8440/41/42/45

LOW-POWER QUAD-CHANNEL DIGITAL ISOLATOR

Features

Applications

Safety Regulatory Approvals

Description

Skyworks Solutions’ family of ultra-low-power digital isolators are

CMOS devices offering substantial data rate, propagation delay,

power, size, reliability, and external BOM advantages when compared

to legacy isolation technologies. The operating parameters of these

products remain stable across wide temperature ranges throughout

their service life. For ease of design, only VDD bypass capacitors are

required.

Data rates up to 150 Mbps are supported, and all devices achieve

worst-case propagation delays of less than 10 ns. All products are

safety certified by UL, CSA, and VDE and support withstand voltages

of up to 2.5 kVrms. These devices are available in 16-pin wide- and

narrow-body SOIC packages.



High-speed operation



DC to 150 Mbps



No start-up initialization required



Wide Operating Supply Voltage:

2.70–5.5 V



Wide Operating Supply Voltage:

2.70–5.5V



Ultra low power (typical)

5 V Operation:



< 1.6 mA per channel at 1 Mbps



< 6 mA per channel at 100 Mbps

2.70 V Operation:



< 1.4 mA per channel at 1 Mbps



< 4 mA per channel at 100 Mbps



High electromagnetic immunity



Up to 2500 VRMS isolation



60-year life at rated working

voltage



Precise timing (typical)



<10 ns worst case



1.5 ns pulse width distortion



0.5 ns channel-channel skew



2 ns propagation delay skew



6 ns minimum pulse width



Transient Immunity 25 kV/µs



AEC-Q100 qualified



Wide temperature range



–40 to 125 °C at 150 Mbps



RoHS-compliant packages



SOIC-16 wide body



SOIC-16 narrow body



Industrial automation systems



Hybrid electric vehicles



Isolated switch mode supplies



Isolated ADC, DAC



Motor control



Power inverters



Communications systems



UL 1577 recognized



Up to 2500 VRMS for 1 minute



CSA component notice 5A

approval



IEC 60950-1, 61010-1

(reinforced

insulation)



VDE certification conformity



IEC 60747-5-2

(VDE0884 Part 2)

Ordering Information:

See page 26.