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ISO7421

更新时间： 2024-09-16 05:39:47
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德州仪器 - TI /
页数 文件大小 规格书
19页 597K
描述
Low-Power Dual Digital Isolators

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ISO7421 数据手册

 浏览型号ISO7421的Datasheet PDF文件第2页浏览型号ISO7421的Datasheet PDF文件第3页浏览型号ISO7421的Datasheet PDF文件第4页浏览型号ISO7421的Datasheet PDF文件第5页浏览型号ISO7421的Datasheet PDF文件第6页浏览型号ISO7421的Datasheet PDF文件第7页 
ISO7420, ISO7420M  
ISO7421, ISO7421M  
www.ti.com  
SLLS984A –JUNE 2009–REVISED DECEMBER 2009  
Low-Power Dual Digital Isolators  
Check for Samples: ISO7420, ISO7420M, ISO7421, ISO7421M  
1
FEATURES  
APPLICATIONS  
•
Optocoupler Replacement in:  
2
•
Highest Signaling Rate: up to 250 Mbps  
–
Industrial Fieldbus  
•
Low Power Consumption, Typical ICC per  
Channel:  
–
–
–
Profibus  
Modbus  
DeviceNet™ Data Buses  
–
2.2 mA at 25 Mbps, 4.2 mA at 100 Mbps  
•
Very Low Propagation Delay – 9 ns Typ. and  
Very Low Skew – 300 ps Typ.  
–
–
–
–
Servo Control Interface  
Motor Control  
Power Supplies  
Battery Packs  
•
•
Widest TA Range Specified: –55°C to 125°C  
4-kVpeak Maximum Isolation, 2.5 kVrms per  
UL 1577, IEC/VDE and CSA Approved, IEC  
60950-1, IEC 61010-1 End Equipment  
Standards Approved. All Approvals Pending.  
•
•
50 kV/μs Transient Immunity, Typical  
Over 25-Year Isolation Integrity at Rated  
Voltage  
•
Operates From 3-V to 5.5-V Supply and Logic  
Levels  
DESCRIPTION  
The ISO7421 and ISO7421M provide galvanic isolation up to 2.5 kVrms for 1 minute per UL. These digital  
isolators have two isolated channels. Each isolation channel has a logic input and output buffer separated by a  
silicon dioxide (SiO2) insulation barrier. Used in conjunction with isolated power supplies, these devices prevent  
noise currents on a data bus or other circuit from entering the local ground and interfering with or damaging  
sensitive circuitry.  
The devices have TTL input thresholds and require two supply voltages from 3 V to 5.5 V, or any combination.  
All inputs are 5-V tolerant when supplied from a 3-V supply.  
ISO7420  
D Package  
(Top View)  
ISO7421  
D Package  
(Top View)  
VCC1  
VCC2  
VCC1  
VCC2  
8
8
1
2
3
4
1
2
3
4
7
6
5
7
6
5
INA  
INB  
OUTA  
OUTB  
GND2  
OUTA  
INB  
INA  
OUTB  
GND1  
GND1  
GND2  
P0066-08  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
DeviceNet is a trademark of Texas Instruments.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2009, Texas Instruments Incorporated  
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ISO7421 替代型号

型号 品牌 替代类型 描述 数据表
ISO7321C TI

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