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ISO7241A-EP

更新时间： 2024-11-01 12:09:19
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
17页 450K
描述
1-Mbps QUAD DIGITAL ISOLATORS

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ISO7241A-EP 数据手册

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ISO7241A-EP  
www.ti.com  
SLLSE18 –JANUARY 2010  
1-Mbps QUAD DIGITAL ISOLATORS  
Check for Samples: ISO7241A-EP  
1
FEATURES  
•
4000-Vpeak Isolation, 560-Vpeak VIORM  
SUPPORTS DEFENSE, AEROSPACE,  
AND MEDICAL APPLICATIONS  
–
UL 1577 , IEC 60747-5-2 (VDE 0884, Rev 2),  
IEC 61010-1, IEC 60950-1 and CSA  
Approved  
•
•
•
•
Controlled Baseline  
One Assembly/Test Site  
One Fabrication Site  
Available in Military (–55°C/125°C)  
Temperature Range(1)  
•
•
•
4-kV ESD Protection  
Operates With 3.3-V or 5-V Supplies  
Typical 25-Year Life at Rated Working Voltage  
(See Application Note (SLLA197 ) and  
Figure 10)  
•
•
•
Extended Product Life Cycle  
Extended Product-Change Notification  
Product Traceability  
•
High Electromagnetic Immunity  
(See Application Report (SLLA181))  
ISO7241A  
(TOP VIEW)  
APPLICATIONS  
V
V
CC2  
1
2
3
4
5
6
7
8
16  
15  
CC1  
GND1  
•
•
•
•
Industrial Fieldbus  
GND2  
Computer Peripheral Interface  
Servo Control Interface  
Data Acquisition  
IN  
IN  
IN  
14  
13  
12  
11  
10  
9
OUT  
A
A
B
C
OUT  
B
OUT  
C
OUT  
EN  
IN  
D
D
EN  
2
1
GND1  
GND2  
(1) Additional temperature ranges available - contact factory  
DESCRIPTION  
See the Product Notification section. The ISO7241A is a quad-channel digital isolator with multiple channel  
configurations and output enable functions. This device has logic input and output buffers separated by TI’s  
silicon dioxide (SiO2) isolation barrier. Used in conjunction with isolated power supplies, this device blocks high  
voltage, isolate grounds, and prevent noise currents from entering the local ground and interfering with or  
damaging sensitive circuitry.  
The ISO7241A has three channels the same direction and one channel in opposition.  
This device has TTL input thresholds and a noise-filter at the input that prevents transient pulses from being  
passed to the output of the device.  
A periodic update pulse is sent across the barrier to ensure the proper dc level of the output. If this dc-refresh  
pulse is not received, the input is assumed to be unpowered or not being actively driven, and the failsafe circuit  
drives the output to a logic high state. (See ISO7240CF (SLLS869) or contact TI for a logic low failsafe option).  
The ISO7241A may be powered from either 3.3-V or 5-V supplies on either side in any 3.3-V / 3.3-V, 5-V / 5-V,  
5-V / 3.3-V, or 3.3-V / 5-V combination. Note that the signal input pins are 5-V tolerant regardless of the voltage  
supply level being used.  
This device is characterized for operation over the ambient temperature range of –55°C to 125°C.  
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.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2010, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
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