ISO7821 datasheet(18/39 Pages) TI1

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ISO7821, ISO7821F

SLLSEM2F – NOVEMBER 2014 – REVISED MARCH 2016

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(1)

See the Regulatory Information section for detailed isolation ratings.

8.3 Feature Description

ISO7821 is available in two channel configurations and default output state options to enable a variety of

application uses.

PRODUCT

CHANNEL DIRECTION

RATED ISOLATION

MAX DATA RATE

DEFAULT OUTPUT

ISO7821

1 Forward, 1 Reverse

5700 VRMS / 8000 VPK

(1)

100 Mbps

High

ISO7821F

1 Forward, 1 Reverse

5700 VRMS / 8000 VPK

(1)

100 Mbps

Low

(1)

All pins on each side of the barrier tied together creating a two-terminal device.

(2)

Measured from input pin to ground.

8.3.1 High Voltage Feature Description

NOTE

This coupler is suitable for 'safe electrical insulation' only within the safety ratings.

Compliance with the safety ratings shall be ensured by means of suitable protective

circuits.

Table 1. Package Insulation and Safety-Related Specifications

(over recommended operating conditions (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP MAX

UNIT

CLR

External clearance

Shortest terminal-to-terminal distance

through air

DW-16

DWW-16

14.5

CPG

External creepage

Shortest terminal-to-terminal distance

across the package surface

DW-16

DWW-16

14.5

CTI

Comparative tracking index

DIN EN 60112 (VDE 0303-11); IEC 60112; UL 746A

600

RIO

Isolation resistance, input to output(1)

VIO = 500 V, TA = 25°C

1012

Ω

VIO = 500 V, 100°C ≤ TA ≤ max

1011

Ω

CIO

Barrier capacitance, input to output(1) VIO = 0.4 x sin (2πft), f = 1 MHz

Input capacitance(2)

VI = VCC/2 + 0.4 x sin (2πft), f = 1 MHz, VCC = 5 V

NOTE

Creepage and clearance requirements should be applied according to the specific

equipment isolation standards of an application. Care should be taken to maintain the

creepage and clearance distance of a board design to ensure that the mounting pads of

the isolator on the printed-circuit board do not reduce this distance.

Creepage and clearance on a printed-circuit board become equal in certain cases.

Techniques such as inserting grooves and/or ribs on a printed circuit board are used to

help increase these specifications.

ISO7821 Datasheet(PDF) 18 Page - Texas Instruments

ISO7821 Datasheet(HTML) 18 Page - Texas Instruments

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