Datasheet > ISO7420_10

ISO7420_10

更新时间： 2024-09-15 11:13:19

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Low-Power Dual Digital Isolators

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数据手册

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ISO7420_10 数据手册

ISO7420, ISO7420M

ISO7421, ISO7421M

www.ti.com

SLLS984D –JUNE 2009–REVISED JULY 2010

Low-Power Dual Digital Isolators

Check for Samples: ISO7420, ISO7420M, ISO7421, ISO7421M

FEATURES

APPLICATIONS

•

Optocoupler Replacement in:

•

Highest Signaling Rate: 1 Mbps

–

Industrial Fieldbus

•

Low Power Consumption, Typical I_CCper

Channel (3.3V operation):

–

Profibus

Modbus

DeviceNet™ Data Buses

–

ISO7420: 1.1 mA, ISO7421: 1.5 mA

•

Low Propagation Delay – 9 ns Typ. and Low

Skew – 300 ps Typ.

–

Servo Control Interface

Motor Control

Power Supplies

Battery Packs

•

Wide T_ARange Specified: –40°C to 125°C

4-kVpeak Maximum Isolation, 2.5 kVrms per

UL 1577, IEC/VDE and CSA Approvals, IEC

60950-1, IEC 61010-1 End Equipment

Standards Approvals. All Approvals Pending.

•

50 kV/ms Transient Immunity, Typical

Over 25-Year Isolation Integrity at Rated

Voltage

•

Operates From 3.3V and 5V Supply and Logic

Levels

DESCRIPTION

The ISO7420, ISO7420M, 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 suffix M indicates wide temperature range (–40°C to 125°C).

The devices have TTL input thresholds and require two supply voltages, 3.3V or 5V, or any combination. All

inputs are 5-V tolerant when supplied from a 3.3V supply.

Note: The ISO7420 and ISO7421 are specified for signaling rates up to 1 Mbps. Due to their fast response time,

under most cases, these devices will also transmit data with much shorter pulse widths. Designers should add

external filtering to remove spurious signals with input pulse duration < 20ns if desired.

SPACER

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.

UNLESS OTHERWISE NOTED this document contains

PRODUCTION DATA information current as of publication date.

Products conform to specifications per the terms of Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...20

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与ISO7420_10相关器件

型号	品牌	获取价格	描述	数据表
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
ISO7420FCCDR	TI	获取价格	Low-Power Dual Channel Digital Isolator

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