IN

OUT

Input

Generator

50

V

I

W

NOTE A

NOTE

B

1.4V

1.4V

10%

90%

Vcc/2

0 V

Vcc/2

V

I

V

O

V

O

OUT

IN

0V

or

NOTE

B

C

L

V

I

V

OH

Vcc1

0 V

V

O

V

I

2.7 V

VOL

50%

FAILSAFEHIGH

V CM

V OL

OUT

C = 0.1 F

µ +1 %

GND 2

NOTEB

V OH or

V CC1

V CC2

C = 0.1 F +1 %

µ

IN

GND1

S 1

Pass-failcriteria –

outputmustremain

stable .

ISO7520

ISO7521

SLLSE39 – JUNE 2010

www.ti.com

PARAMETER MEASUREMENT INFORMATION

A.

The input pulse is supplied by a generator having the following characteristics: PRR

B.

Figure 1. Switching Characteristic Test Circuit and Voltage Waveforms

A.

Figure 2. Failsafe Delay Time Test Circuit and Voltage Waveforms

A.

Figure 3. Common-Mode Transient Immunity Test Circuit

8

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Product Folder Link(s): ISO7520 ISO7521