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Si86xx Digital Isolators

The Si86xx family is the industry’s highest performing, widest channel count series of unidirectional and bidirectional isolators supporting up to reinforced 5kVrms isolation ratings. Based on Silicon Labs’ patented CMOS isolation technology, Si86xx isolators enable robust operation in harsh industrial applications.

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Features

Up to 5000 VRMS isolation
UL, CSA, VDE certification
60-year life at rated working voltage
High electromagnetic immunity
Supply voltage 2.5 to 5.5 V
Independent, bidirectional SDA and SCL isolation channels

Open drain outputs with 35 mA sink current
Supports I²C clocks up to 1.7 MH
Unidirectional isolation channels support additional system signals (Si8605, Si8606)

–40 to +125 °C temperature range
Common mode transient immunity 50 kV/μs
AEC-Q100 qualification
RoHS-compliant packages

SOIC-8 narrow body
SOIC-16 wide body
SOIC-16 narrow body

Applications

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Data Sheet (6)

Document Name	Description	Version	Last Updated
Si860x.pdf	Si860x Data Sheet	1.1	3/21/2012
Si861x-2x.pdf	Si861x Data Sheet	1.2	3/20/2012
Si863x.pdf	Si863x Data Sheet	1.2	3/21/2012
Si864x.pdf	Si864x Data Sheet	1.3	3/21/2012
Si865x.pdf	Si865x Data Sheet	1.5	3/20/2012
Si866x.pdf	Si866x Data Sheet	1.3	3/21/2012

User Guides (3)

Document Name	Description	Version	Last Updated
Discrete ISOvolt_UG.pdf	Discrete ISOvolt Isolated DC-DC Converter Reference Design User's Guide	0.2	9/22/2011
Si86xx_IsoLin.pdf	Si86xx IsoLinear User's Guide	0.1	7/11/2011
Si86xxISO-EVB.pdf	Si86xxISO EVB User's Guide	0.2	7/11/2011

Application Notes (6)

Document Name	Description	Version	Last Updated
AN559.pdf	AN559: Isolating Analog Signals Using the Si86xx CMOS Isolator Family	0.3	1/17/2012
AN583.pdf	AN583: Safety Considerations and Layout Recommendations for Digital Isolators	0.1	2/10/2011
AN598.pdf	AN598: High-Speed Level Shifting Using Si8xxx Isolators	0.1	7/12/2011
AN611.pdf	AN611: Using the ISOvolt DC/DC Converter Reference Design	0.2	9/22/2011
AN614.pdf	AN614: A Simple Alternative to Analog Isolation Amplifiers	0.1	7/12/2011
AN634.pdf	AN634: Power Supply Considerations for Silicon Labs CMOS Isolation Products	0.1	9/22/2011

White Papers (8)

Document Name	Description	Version	Last Updated
Solar-Power-Inverter-Isolation_WP.pdf	Advanced Digital Isolation Technologies Boost Solar Power Inverter Reliability	1.0	7/14/2011
CMOS-Advanced-Galvanic-Isolators-for-Medical-Electronics.pdf	CMOS Advanced Galvanic Isolators for Medical Electronics
CMOS-Digital-Isolators-Provide-Data-Protection_WP.pdf	CMOS Digital Isolators Provide Data Protection for Smart Meters	0.1	4/27/2011
CMOS Digital Isolators_WP.pdf	CMOS Digital Isolators Supersede Optocouplers in Industrial Applications	0.2	11/9/2010
Isolators-in-Motor-Control_WP.pdf	CMOS Isolators for Home Appliance Motor Control	1.0	7/18/2011
Low-EMI-Isolation_WP.pdf	Low EMI Isolation for Medical Equipment Applications	0.1	3/30/2011
Solar-Power-Inverter-Isolation-WP-SC.pdf	先进的数字隔离技术提高太阳能逆变器可靠性	1.0	4/26/2012
Solar-Power-Inverter-Isolation-WP-TC.pdf	先進的數位隔離技術提高太陽能逆變器的可靠性	1.0	4/26/2012

Design Tools

Si86xx Digital Isolator Evaluation Kit

The Si86xx Digital Isolator Evaluation Kit provides a convenient engineering breakout board for simplifying evaluations of the Si86xx isolation product family. It includes four different isolators (2, 5 and 6-channel) as well as two bidirectional I2C compliant isolators.

Si86xx Linear Isolation Reference Design

The Si86xx Linear Isolation Reference Design provides a high performance alternative to expensive isolation amplifiers used to implement analog signal isolation. Includes three different analog isolation circuits supporting bandwidth from 100 to 500 kHz.

ISOvolt Isolated Reference Design

The ISOvolt Reference Design provides the necessary isolated power supply for the secondary side of the isolation interface with a plug and play solution for up-to 3W of isolated continuous output power with 78% efficiency, fold-back current limiting, thermal protection and flexibility to allow for 3V or 5V inputs and outputs.

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Models (1)

Document Name	Description	Version	Updated
Si86xx_IBIS_Models.zip	Si86xx IBIS Models	0.5	10/19/2011

Product Matrix

Part Number	Available Documents	Maximum Propagation Delay	Isolation Rating	Enable Control	Package	Temperature Range	VDD	Bidirectional Channels	Eval Kit	Unidirectional Channels	Channel Type	Forward Channels	Reverse Channels	Max Data Rate	Default Output State
Si8600AC-B-IS	Data Sheet	55	3.75	No	SOIC-8	-40 to 125 °C	2.5 - 5.5 V	2	Isolator EVB	1	Bidirectional	-	-	1.7	Low
Si8600AD-B-IS	Data Sheet	55	5	No	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	2	Isolator EVB Linear Refence Design	-	Bidirectional	-	-	1.7	Low
Si8602AC-B-IS	Data Sheet	55	3.75	No	SOIC-8	-40 to 125 °C	2.5 - 5.5 V	1	Isolator EVB	1	Unidirectional+Bidirectional	-	-	1.7	Low
Si8602AD-B-IS	Data Sheet	55	5	No	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	1	Isolator EVB	1	Unidirectional+Bidirectional	-	-	1.7	Low
Si8605AC-B-IS1	Data Sheet	55	3.75	No	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	2	Isolator EVB	2	Unidirectional+Bidirectional	-	-	1.7	Low
Si8605AD-B-IS	Data Sheet	55	5	No	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	2	Isolator EVB	2	Unidirectional+Bidirectional	-	-	1.7	Low
Si8606AC-B-IS1	Data Sheet	55	3.75	No	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	2	Isolator EVB	2	Unidirectional+Bidirectional	-	-	1.7	Low
Si8606AD-B-IS	Data Sheet	55	5	No	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	2	Isolator EVB	2	Unidirectional+Bidirectional	-	-	1.7	Low
Si8610BC-B-IS	Data Sheet	13	3.75	Yes	SOIC-8	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	1	Unidirectional	1	0	150	Low
Si8610BD-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	1	Unidirectional	1	0	150	Low
Si8610EC-B-IS	Data Sheet	13	3.75	Yes	SOIC-8	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	1	Unidirectional	1	0	150	High
Si8610ED-B-IS	Data Sheet	13	5	Yes	SOIC-8	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	1	Unidirectional	1	0	150	High
Si8620BC-B-IS	Data Sheet	13	3.75	Yes	SOIC-8	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	2	Unidirectional	2	0	150	Low
Si8620BD-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	2	Unidirectional	2	0	150	Low
Si8620EC-B-IS	Data Sheet	13	3.75	Yes	SOIC-8	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	2	Unidirectional	2	0	150	High
Si8620ED-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	2	Unidirectional	2	0	150	High
Si8621BC-B-IS	Data Sheet	13	3.75	Yes	SOIC-8	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	2	Unidirectional	1	1	150	Low
Si8621BD-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	2	Unidirectional	1	1	150	Low
Si8621EC-B-IS	Data Sheet	13	3.75	Yes	SOIC-8	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	2	Unidirectional	1	1	150	High
Si8621ED-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	2	Unidirectional	1	1	150	High
Si8622BC-B-IS	Data Sheet	13	3.75	Yes	SOIC-8	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	2	Unidirectional	1	1	150	Low
Si8622BD-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	Unidirectional	Isolator EVB Linear Ref Design	2	Unidirectional	1	1	150	Low
Si8622EC-B-IS	Data Sheet	13	3.75	Yes	SOIC-8	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	2	Unidirectional	1	1	150	High
Si8622ED-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	2	Unidirectional	1	1	150	High
Si8630BC-B-IS1	Data Sheet	13	3.75	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	3	Unidirectional	3	0	150	Low
Si8630BD-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	3	Unidirectional	3	0	150	Low
Si8630EC-B-IS1	Data Sheet	13	3.75	Yes	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	3	Unidirectional	3	0	150	High
Si8630ED-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	3	Unidirectional	3	0	150	High
Si8631BC-B-IS1	Data Sheet	13	3.75	Yes	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	3	Unidirectional	2	1	150	Low
Si8631BD-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	3	Unidirectional	2	1	150	Low
Si8631EC-B-IS1	Data Sheet	13	3.75	Yes	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	3	Unidirectional	2	1	150	High
Si8631ED-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	3	Unidirectional	2	1	150	High
Si8635BC-B-IS1	Data Sheet	13	3.75	No	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	3	Unidirectional	3	0	150	Low
Si8635BD-B-IS	Data Sheet	13	5	No	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	3	Unidirectional	3	0	150	Low
Si8640BC-B-IS1	Data Sheet	13	3.75	Yes	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	4	Unidirectional	4	0	150	Low
Si8640BD-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	4	Unidirectional	4	0	150	Low
Si8640EC-B-IS1	Data Sheet	13	3.75	Yes	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	4	Unidirectional	4	0	150	High
Si8640ED-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	4	Unidirectional	4	0	150	High
Si8641BA-B-IU	Data Sheet	13	1	Yes	QSOP-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	4	Unidirectional	3	1	150	Low
Si8641BC-B-IS1	Data Sheet	13	3.75	Yes	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	4	Unidirectional	3	1	150	Low
Si8641BD-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	4	Unidirectional	3	1	150	Low
Si8641EC-B-IS1	Data Sheet	13	3.75	Yes	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	4	Unidirectional	3	1	150	High
Si8641ED-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	4	Unidirectional	3	1	150	High
Si8642BA-B-IU	Data Sheet	13	1	Yes	QSOP-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	4	Unidirectional	2	2	150	Low
Si8642BC-B-IS1	Data Sheet	13	3.75	Yes	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	4	Unidirectional	2	2	150	Low
Si8642BD-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	4	Unidirectional	2	2	150	Low
Si8642EC-B-IS1	Data Sheet	13	3.75	Yes	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	4	Unidirectional	2	2	150	High
Si8642ED-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	4	Unidirectional	2	2	150	High
Si8645BA-B-IU	Data Sheet	13	1	No	QSOP-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	4	Unidirectional	4	0	150	Low
Si8645BC-B-IS1	Data Sheet	13	3.75	No	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	4	Unidirectional	4	0	150	Low
Si8645BD-B-IS	Data Sheet	13	5	No	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	4	Unidirectional	4	0	150	Low
Si8650BC-B-IS1	Data Sheet	13	3.75	Yes	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	5	Unidirectional	5	0	150	Low
Si8650BD-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	5	Unidirectional	5	0	150	Low
Si8650EC-B-IS1	Data Sheet	13	3.75	Yes	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	5	Unidirectional	5	0	150	High
Si8650ED-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	5	Unidirectional	5	0	150	High
Si8651BC-B-IS1	Data Sheet	13	3.75	Yes	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	5	Unidirectional	4	1	150	Low
Si8651BD-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	5	Unidirectional	4	1	150	Low
Si8651EC-B-IS1	Data Sheet	13	3.75	Yes	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	5	Unidirectional	4	1	150	High
Si8651ED-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	5	Unidirectional	4	1	150	High
Si8652BC-B-IS1	Data Sheet	13	3.75	Yes	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	5	Unidirectional	3	2	150	Low
Si8652BD-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	5	Unidirectional	3	2	150	Low
Si8652EC-B-IS1	Data Sheet	13	3.75	Yes	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	5	Unidirectional	3	2	150	High
Si8652ED-B-IS	Data Sheet	13	5	Yes	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	5	Unidirectional	3	2	150	High
Si8655BA-B-IS	Data Sheet	13	1	No	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	5	Unidirectional	5	0	150	Low
Si8655BA-B-IU	Data Sheet	13	1	No	QSOP-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	5	Unidirectional	5	0	150	Low
Si8655BD-B-IS	Data Sheet	13	5	No	Package	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	5	Unidirectional	5	0	150	Low
Si8660BA-B-IS1	Data Sheet	13	1	No	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	6	Unidirectional	6	0	150	Low
Si8660BA-B-IS1	Data Sheet	13	3.75	No	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	6	Unidirectional	6	0	150	Low
Si8660BC-B-IS1	Data Sheet	13	3.75	No	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	6	Unidirectional	6	0	150	Low
Si8660BD-B-IS	Data Sheet	13	5	No	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	6	Unidirectional	6	0	150	Low
Si8660EC-B-IS1	Data Sheet	13	3.75	No	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	6	Unidirectional	6	0	150	High
Si8660ED-B-IS	Data Sheet	13	5	No	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	6	Unidirectional	6	0	150	High
Si8661BC-B-IS1	Data Sheet	13	3.75	No	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	6	Unidirectional	5	1	150	Low
Si8661BD-B-IS	Data Sheet	13	5	No	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	6	Unidirectional	5	1	150	Low
Si8661EC-B-IS1	Data Sheet	13	3.75	No	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	6	Unidirectional	5	1	150	High
Si8661ED-B-IS	Data Sheet	13	5	No	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	6	Unidirectional	5	1	150	High
Si8662BC-B-IS1	Data Sheet	13	3.75	No	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	6	Unidirectional	4	2	150	Low
Si8662BD-B-IS	Data Sheet	13	5	No	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	6	Unidirectional	4	2	150	Low
Si8662EC-B-IS1	Data Sheet	13	3.75	No	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	6	Unidirectional	4	2	150	High
Si8662ED-B-IS	Data Sheet	13	5	No	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	6	Unidirectional	4	2	150	High
Si8663BC-B-IS1	Data Sheet	13	3.75	No	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	6	Unidirectional	3	3	150	Low
Si8663BD-B-IS	Data Sheet	13	5	No	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	6	Unidirectional	3	3	150	Low
Si8663EC-B-IS1	Data Sheet	13	3.75	No	NB SOIC-16	-40 to 125 °C	2.5 - 5.5 V		Isolator EVB Linear Ref Design	6	Unidirectional	3	3	150	High
Si8663ED-B-IS	Data Sheet	13	5	No	WB SOIC-16	-40 to 125 °C	2.5 - 5.5 V	-	Isolator EVB Linear Ref Design	6	Unidirectional	3	3	150	High

Find products fast using the parametric search.

Silicon Labs UL/CSA/VDE certified Si86xx digital isolators are available in isolation ratings of 2.5kVrms, 3.75kVrms and 5.0kVrms with 1 to 6 channels per package and data rates from DC to 150Mbps (depending on part number). This series is 100% package and pin-compatible with the popular Si84xx digital isolator family, and is targeted toward high electrical noise applications. Si86xx enhancements (Figure 1) include Schmitt-triggered inputs for higher input noise immunity, increased ESD protection, high noise rejection linear regulators to ensure quiet bias voltage, lower power oscillators for greater operating efficiency and faster output buffers with tightened 50?? source impedance for better matching. Compared to competing digital isolators, Si86xx products provide near zero EMI emissions and significant field immunity advantages which ease EMC compliance challenges. These isolators feature the industry’s highest data rate (150 Mbps) across the widest temperature range (-40 to 125 ºC) and low power operation of <1.6 mA per channel at 1 Mbps. Package options include wide body SOIC-16 rated at 5kVrms; and narrow body SOIC-8 and SOIC-16 rated at 3.75kVrms. Table 1 compares the Si86xx to the other Silicon Labs digital isolator families.

Low noise environment applications should use the lower-cost Si84xx pin-compatible digital isolator series. Table 1 summarizes the key differences between the Si84xx and Si86xx digital isolator families, while Table 2 shows the available Si84xx and Si86xx configurations.

	Si84xx	Si86xx
Max Isolation Voltage(kV)	2.5	5.0
Min CMTI (kV/US)	25	35
Input Device	Buffer	Schmitt Trigger
Input VDD Range (V)	2.7 to 5.5	2.5 to 5.5
Output VDD Range (V)	2.7 to 5.5	2.5 to 5.5
Current/Ch at VDD = 5V, 1Mbps (mA)	1.65	1.25
Max Prop Delay (nS)	9.5	9
Max Pulse Width Distortion (nS)	2.5	1.5
Minimum Pulse Width (nS)	6	5
10kV Surge Capability	No	No
Typ Rise/Fall Time at VDD = 5V (nS)	5.0/3.7	3.5/2.0
Output Latch	None	None
*Voltage shown is anode voltage with respect to cathode voltage

Table 1: Si84xx, Si86xx Top-Level Comparison

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Training & Resources

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Find out exactly how much power the isolation configuration in your system will consume with the first ever isolator power consumption calculator. Simply choose the settings that match your design, and the utility will provide detailed power and current data.

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Enter the part number from another company into the Cross-Reference Search Utility to find a list of Silicon Labs products that can replace those parts. Once you find the products you need, you can click on the part number to see more details about the Silicon Labs device, download the data sheet by clicking on the data sheet link, and export the results to Excel.

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Featured White Papers

Digital Isolators vs. Optocouplers

Over the last four decades, optocouplers have been the "default" signal isolation device, but recent breakthroughs in silicon isolation technology have spawned smaller, faster, and more reliable and cost-effective solutions that have already begun supplanting optocouplers in many end applications. This white paper discusses industrial isolation issues and ways RF isolation technology can be applied to increase system robustness and performance.

Enhancing Power Delivery System Designs with CMOS-Based Isolated Gate Drivers

As emerging green standards challenge designers to deliver more energy-efficient, cost-effective and reliable power delivery systems in smaller form factors, the need for greater power and isolation device integration becomes increasingly important. A critical building block within ac-dc and isolated dc-dc power supplies is the isolated gate driver. While optocoupler-based solutions and gate-drive transformers have been the mainstay for switch-mode power supply (SMPS) systems for many years, fully-integrated isolated gate driver products based on RF technology and implemented in mainstream CMOS provide a more reliable and power-efficient solution.

Isolation and Power

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Si86xx Digital Isolators

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