RXD

CANH

CANL

GND 2

GND 1

V I

(SEENOTE A) 1 .5 V

I O

V O

CL = 15 pF

20 %

(SEENOTEB)

±

V

I

V

O

2 V

2 .4 V

3 .5 V

VOH

t f

t r

t pHL

1 .5 V

V

OL

90 %

10 %

0 .3 Vcc 1

0 .7 Vcc 1

t pLH

CANH

CANL

RXD

Thewaveformsoftheappliedtransientsareinaccordance

withISO 7637 part 1, testpulses 1, 2, 3a, and 3b.

TXD

1 nF

1 nF

15 pF

GND2

GND1

VI

+

_

ISO1050

SLLS983C – JUNE 2009 – REVISED JULY 2010

www.ti.com

PARAMETER MEASUREMENT INFORMATION (continued)

A.

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

≤ 125 kHz, 50% duty cycle,

B.

Figure 6. Receiver Test Circuit and Voltage Waveforms

Table 1. Differential Input Voltage Threshold Test

INPUT

OUTPUT

R

–11.1 V

–12 V

900 mV

L

12 V

11.1 V

900 mV

L

–6 V

–12 V

6 V

L

12 V

6 V

6 V

L

–11.5 V

–12 V

500 mV

H

12 V

11.5 V

500 mV

H

–12 V

–6 V

–6 V

H

6 V

12 V

–6 V

H

Open

Open

X

H

Figure 7. Transient Over-Voltage Test Circuit

6

Submit Documentation Feedback

Copyright © 2009–2010, Texas Instruments Incorporated

Product Folder Link(s): ISO1050