SI8401AB-B-ISR datasheet, PDF - EEWORLD Datasheet

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SI8401AB-B-ISR: DescriptionDigital Isolators 2.5 kV Bidirect I2C Isolator 1.7MHz; Categorysemiconductor Analog mixed-signal IC; File Size415KB，34 Pages; ManufacturerSilicon Laboratories; Environmental Compliance

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SI8401AB-B-ISR Overview

Digital Isolators 2.5 kV Bidirect I2C Isolator 1.7MHz

SI8401AB-B-ISR Parametric

Parameter Name	Attribute value
Product Attribute	Attribute Value
Manufacturer	Silicon Laboratories
Product Category	Digital Isolators
RoHS	Details
Polarity	Bidirectional
Isolation Type	Capacitive Coupling
Supply Voltage - Max	5.5 V
Supply Voltage - Min	3 V
Packaging	Reel
Product	Digital Isolators
Type	Bidirectional I2C Isolator
Moisture Sensitive	Yes
Operating Supply Voltage	3 V to 5.5 V
Pd - Power Dissipation	220 mW
Protocol Supported	I2C
Factory Pack Quantity	2500

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Si840x

IDIRECTIONAL

C I

SOLA TORS

IGITA L

HANNELS

Features



WITH

NIDIRECTIONAL

Applications



Isolated I

C, PMBus, SMBus



Power over Ethernet



Motor Control Systems

Description

The Si840x series of isolators are single-package galvanic isolation

solutions for I

C and SMBus serial port applications. These products are

based on Silicon Labs proprietary RF isolation technology and offer shorter

propagation delays, lower power consumption, smaller installed size, and

more stable operation with temperature and age versus opto couplers or

other digital isolators.

All devices in this family include hot-swap, bidirectional SDA and SCL

isolation channels with open-drain, 35 mA sink capability and operate to a

maximum frequency of 1.7 MHz. The 8-pin version (Si8400/01) supports

bidirectional SDA and SCL isolation; the Si8402 supports bidirectional SDA

and unidirectional SCL isolation, and the 16-pin version (Si8405) features

two unidirectional isolation channels to support additional system signals,

such as an interrupt or reset. All versions contain protection circuits to

guard against data errors if an unpowered device is inserted into a powered

system.

Small size, low installed cost, low power consumption, and short

propagation delays make the Si840x family the optimum solution for

isolating I

C and SMBus serial ports.

Safety Regulatory Approval



UL 1577 recognized



Up to 2500 V

RMS

for 1 minute

CSA component notice 5A approval



IEC 60950-1, 61010-1

(reinforced

insulation)

Rev. 1.6 10/13

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Hot-swap applications



Intelligent Power systems



Isolated SMPS systems with

PMBus interfaces



to 5.5 V



Supports

clocks up to 1.7 MHz



Wide temperature range



–40 to +125 °C max



Unidirectional isolation channels

support additional system signals



Transient immunity 25 kV/µs

(Si8405)



RoHS-compliant packages



Up to 2500 V

RMS

isolation



SOIC-8 narrow body



SOIC-16 narrow body



UL, CSA, VDE recognition

Independent, bidirectional SDA and

SCL isolation channels



Open drain outputs with 35 mA

sink current



60-year life at rated working voltage



High electromagnetic immunity



Wide operating supply voltage



3.0

Ordering Information:

See page 25.

VDE certification conformity



IEC 60747-5-2

(VDE0884 Part 2)

Si840x

Si840x

ABLE

Section

ONTENTS

Page

1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

1.1. Test Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

2. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.1. Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3. Device Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.1. Device Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

3.2. Under Voltage Lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.3. Layout Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.4. Input and Output Characteristics for Non-I2C Digital Channels . . . . . . . . . . . . . . . . 15

3.5. Typical Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4. Typical Application Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.1. I2C Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

4.2. I2C Isolator Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.3. I2C Isolator Design Constraints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.4. I2C Isolator Design Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5. Errata and Design Migration Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.1. Power Supply Bypass Capacitors (Revision A and Revision B) . . . . . . . . . . . . . . . . 22

6. Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

7. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

8. Package Outline: 8-Pin Narrow Body SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

9. Land Pattern: 8-Pin Narrow Body SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

10. Package Outline: 16-Pin Narrow Body SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

11. Land Pattern: 16-Pin Narrow Body SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

12. Top Marking: 8-Pin Narrow Body SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

12.1. 8-Pin Narrow Body SOIC Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

12.2. Top Marking Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

13. Top Marking: 16-Pin Narrow Body SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

13.1. 16-Pin Narrow Body SOIC Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

13.2. Top Marking Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

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Rev. 1.6

SI8401AB-B-ISR Related Products

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Product Attribute	Attribute Value	Attribute Value	Attribute Value	Attribute Value	Attribute Value	Attribute Value	Attribute Value	Attribute Value	Attribute Value	Attribute Value
Manufacturer	Silicon Laboratories	Silicon Laboratories	Silicon Laboratories	Silicon Laboratories	Silicon Laboratories	Silicon Laboratories	Silicon Laboratories	Silicon Laboratories	Silicon Laboratories	Silicon Laboratories
Product Category	Digital Isolators	Digital Isolators	Digital Isolators	Digital Isolators	Digital Isolators	Digital Isolators	Digital Isolators	Digital Isolators	Digital Isolators	Digital Isolators
Isolation Type	Capacitive Coupling	Capacitive Coupling	Capacitive Coupling	Capacitive Coupling	Capacitive Coupling	Capacitive Coupling	Capacitive Coupling	Capacitive Coupling	Capacitive Coupling	Capacitive Coupling
Supply Voltage - Max	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V
Supply Voltage - Min	3 V	3 V	3 V	3 V	3 V	3 V	3 V	3 V	3 V	3 V
RoHS	Details	Details	Details	Details	Details	Details	Details	Details	Details	-
Polarity	Bidirectional	-	Bidirectional	Bidirectional, Unidirectional	-	Bidirectional	Bidirectional, Unidirectional	Bidirectional	Bidirectional, Unidirectional	-
Packaging	Reel	-	Reel	Reel	Box	Reel	Reel	Reel	Tube	-
Product	Digital Isolators	-	Digital Isolators	Digital Isolators	-	Digital Isolators	Digital Isolators	Digital Isolators	Digital Isolators	-
Type	Bidirectional I2C Isolator	-	Bidirectional I2C Isolator	Bidirectional I2C Isolator	-	Bidirectional I2C Isolator	Bidirectional I2C Isolator	Bidirectional I2C Isolator	Bidirectional I2C Isolator	-
Moisture Sensitive	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	-
Operating Supply Voltage	3 V to 5.5 V	3 V to 5.5 V	3 V to 5.5 V	3 V to 5.5 V	3 V to 5.5 V	3 V to 5.5 V	3 V to 5.5 V	3 V to 5.5 V	-	3 V to 5.5 V
Pd - Power Dissipation	220 mW	-	-	275 W	275 W	220 mW	275 W	-	220 W	-
Protocol Supported	I2C	-	I2C	I2C	-	I2C	I2C	I2C	I2C	-
Factory Pack Quantity	2500	2500	2500	2500	2500	2500	2500	2500	96	-
Unit Weight	-	0.003365 oz	0.003365 oz	0.006637 oz	0.006637 oz	-	0.006637 oz	0.003365 oz	0.003365 oz	0.003365 oz

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