ISO7420

更新时间： 2024-11-01 05:39:47

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Low-Power Dual Digital Isolators

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数据手册
替代型号

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ISO7420 数据手册

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

FEATURES

APPLICATIONS

•

Optocoupler Replacement in:

•

Highest Signaling Rate: up to 250 Mbps

–

Industrial Fieldbus

•

Low Power Consumption, Typical I_CCper

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 T_ARange 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)

V_CC1

V_CC2

V_CC1

V_CC2

INA

INB

OUTA

OUTB

GND2

OUTA

INB

INA

OUTB

GND1

GND2

P0066-08

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.

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.

12 3 4 5 6 7...19

中文翻译

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ISO7420 替代型号

型号	品牌	替代类型	描述	数据表
ISO7320C	TI	功能相似	低功耗、双通道、2/0、25Mbps 数字隔离器
ISO7420FCC	TI	功能相似	Low-Power Dual Channel Digital Isolators
ISO7420M	TI	功能相似	Low-Power Dual Digital Isolators

与ISO7420相关器件

型号	品牌	获取价格	描述	数据表
ISO7420_10	TI	获取价格	Low-Power Dual Digital Isolators
ISO7420D	TI	获取价格	Low-Power Dual Digital Isolators
ISO7420DR	TI	获取价格	Low-Power Dual Digital Isolators
ISO7420E	TI	获取价格	Low-Power Dual Channel Digital Isolators
ISO7420E_1112	TI	获取价格	Low-Power Dual Channel Digital Isolators
ISO7420ED	TI	获取价格	Low-Power Dual Channel Digital Isolators
ISO7420EDR	TI	获取价格	Low-Power Dual Channel Digital Isolators
ISO7420FCC	TI	获取价格	Low-Power Dual Channel Digital Isolators
ISO7420FCC_15	TI	获取价格	Low-Power Dual Channel Digital Isolator
ISO7420FCCD	TI	获取价格	Low-Power Dual Channel Digital Isolator

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