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ISO6721FBDR

更新时间： 2024-01-19 12:55:44
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德州仪器 - TI /
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43页 3763K
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ISO672x General Purpose Basic Dual-Channel Digital Isolators with Robust EMC

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ISO6720, ISO6721  
SLLSFJ0C – JANUARY 2020 – REVISED MAY 2021  
ISO672x General Purpose Basic Dual-Channel Digital Isolators with Robust EMC  
1 Features  
3 Description  
•
Functional Safety-Capable  
The ISO672xB devices are high-performance, dual-  
channel digital isolators ideal for cost sensitive  
applications requiring up to 3000 VRMS (D package)  
isolation ratings per UL 1577. These devices are also  
certified by VDE, TUV, CSA, and CQC.  
– Documentation available to aid functional safety  
system design: ISO6720, ISO6721  
50-Mbps data rate  
•
•
Robust isolation barrier:  
– High lifetime at 450 VRMS working voltage  
– Up to 3000 VRMS isolation rating  
– ±75 kV/μs typical CMTI  
Wide supply range: 1.71 V to 1.89 V and 2.25 V to  
5.5 V  
1.71-V to 5.5-V level translation  
Default output High (ISO672xB) and Low  
(ISO672xFB) Options  
Wide temperature range: –40°C to +125°C  
1.8 mA per channel typical at 1 Mbps  
Low propagation delay: 11 ns typical  
Robust electromagnetic compatibility (EMC)  
– System-Level ESD, EFT, and surge immunity  
– ±8 kV IEC 61000-4-2 contact discharge  
protection across isolation barrier  
– Low emissions  
The ISO672xB devices provide high electromagnetic  
immunity and low emissions at low power  
consumption, while isolating CMOS or LVCMOS  
digital I/Os. Each isolation channel has a logic  
input and output buffer separated by TI's double  
capacitive silicon dioxide (SiO2) insulation barrier.  
The ISO6720B device has 2 isolation channels with  
both channels in the same direction. The ISO6721B  
device has 2 isolation channels with 1 channel in  
each direction. In the event of input power or signal  
loss, the default output is high for devices without  
suffix F and low for devices with suffix F. See Device  
Functional Modes section for further details.  
•
•
•
•
•
•
•
Used in conjunction with isolated power supplies,  
these devices help prevent noise currents on data  
buses, such as UART, SPI, RS-485, RS-232, and  
CAN from damaging sensitive circuitry. Through  
innovative chip design and layout techniques,  
the electromagnetic compatibility of the ISO672xB  
devices has been significantly enhanced to ease  
system-level ESD, EFT, surge, and emissions  
compliance. The ISO672xB family of devices is  
available in a 8-pin SOIC narrow-body (D) package  
and is a pin-to-pin upgrade to the older generations.  
For reinforced isolation requirements, refer to the  
ISO672x-Q1.  
•
•
Narrow-SOIC (D-8) package  
Safety-Related Certifications:  
– DIN VDE V 0884-11:2017-01  
– UL 1577 component recognition program  
– IEC 62368-1, IEC 61010-1, IEC 60601-1  
– GB 4943.1-2011 (pending)  
2 Applications  
•
•
•
•
•
•
•
Power supplies  
Grid, Electricity meter  
Motor drives  
Factory automation  
Building automation  
Lighting  
Table 3-1. Device Information  
PART NUMBER(1)  
PACKAGE  
BODY SIZE (NOM)  
ISO6720B,  
ISO6720FB  
Appliances  
D (8)  
4.90 mm x 3.91 mm  
ISO6721B,  
ISO6721FB  
(1) For all available packages, see the orderable addendum at  
the end of the datasheet.  
VCCO  
VCCI  
Series Isolation  
Capacitors  
INx  
OUTx  
GNDI  
GNDO  
Copyright © 2016, Texas Instruments Incorporated  
VCCI=Input supply, VCCO=Output supply  
GNDI=Input ground, GNDO=Output ground  
Simplified Schematic  
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 
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