Datasheet > ISO721_10

ISO721_10

更新时间： 2024-01-17 23:06:52

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德州仪器 - TI		/
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描述
3.3-V / 5-V HIGH-SPEED DIGITAL ISOLATORS

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数据手册

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ISO721_10 数据手册

ISO721, ISO721M

ISO722, ISO722M

www.ti.com

SLLS629I –JANUARY 2006–REVISED FEBRUARY 2010

3.3-V / 5-V HIGH-SPEED DIGITAL ISOLATORS

Check for Samples: ISO721, ISO721M, ISO722, ISO722M

FEATURES

DESCRIPTION

•

4000-V_(peak)Isolation, 560-V_peakV_IORM

–

UL 1577, IEC 60747-5-2 (VDE 0884, Rev. 2)

IEC 61010-1, IEC 60950-1 and CSA

Approved

The ISO721, ISO721M, ISO722, and ISO722M are

digital isolators with a logic input and output buffer

separated by a silicon dioxide (SiO₂) insulation

barrier. This barrier provides galvanic isolation of up

to 4000 V. Used in conjunction with isolated power

supplies, these devices prevent noise currents on a

data bus or other circuits from entering the local

ground, and interfering with or damaging sensitive

circuitry.

–

50 kV/µs Transient Immunity Typical

•

Signaling Rate 0 Mbps to 150 Mbps

–

Low Propagation Delay

Low Pulse Skew (Pulse-Width Distortion)

•

Low-Power Sleep Mode

High Electromagnetic Immunity

Low Input-Current Requirement

Failsafe Output

A binary input signal is conditioned, translated to a

balanced signal, then differentiated by the capacitive

isolation barrier. Across the isolation barrier,

differential comparator receives the logic transition

information, then sets or resets a flip-flop and the

output circuit accordingly. 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

for more than 4 ms, the input is assumed to be

unpowered or not being actively driven, and the

failsafe circuit drives the output to a logic high state.

Drop-In Replacement for Most Opto and

Magnetic Isolators

APPLICATIONS

•

Industrial Fieldbus

–

Modbus

Profibus

DeviceNet™ Data Buses

Smart Distributed Systems ( SDS™)

•

Computer Peripheral Interface

Servo Control Interface

Data Acquisition

FUNCTION DIAGRAM

Isolation Barrier

DC Channel

Filter

Pulse Width

Demodulation

OSC

PWM

ref

Carrier Detect

POR

BIAS

ISO722

Only

Data MUX

AC Detect

3-State

Input

Filter

ref

OUT

Output Buffer

AC Channel

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.

SDS is a trademark of Honeywell.

DeviceNet is a trademark of Open Devicenet Vendors Association, Inc.

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.

12 3 4 5 6 7...26

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与ISO721_10相关器件

型号	品牌	获取价格	描述	数据表
ISO721_1007	TI	获取价格	3.3-V / 5-V HIGH-SPEED DIGITAL ISOLATORS
ISO721_15	TI	获取价格	Single Channel High-Speed Digital Isolators
ISO721D	TI	获取价格	3.3-V / 5-V HIGH-SPEED DIGITAL ISOLATORS
ISO721DG4	TI	获取价格	3.3-V / 5-V HIGH-SPEED DIGITAL ISOLATORS
ISO721DR	TI	获取价格	3.3-V / 5-V HIGH-SPEED DIGITAL ISOLATORS
ISO721DRG4	TI	获取价格	3.3-V / 5-V HIGH-SPEED DIGITAL ISOLATORS
ISO721DUB	TI	获取价格	3.3-V / 5-V HIGH-SPEED DIGITAL ISOLATORS
ISO721DUBR	TI	获取价格	3.3-V / 5-V HIGH-SPEED DIGITAL ISOLATORS
ISO721M	TI	获取价格	3.3-V / 5-V HIGH-SPEED DIGITAL ISOLATORS
ISO721MD	TI	获取价格	3.3-V / 5-V HIGH-SPEED DIGITAL ISOLATORS

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