R

CANH

CANL

2

R

CANH

CANL

2.2V

2.2V

2.9V

1.5V

90%

10%

50%

(seeNote A)

1.5V

(seeNoteB)

10%

90%

50%

100

Ω

CANH

CANL

Pulse Generator

15

µs Duration

1% Duty Cycle

R

SN65HVD233

SN65HVD234

SN65HVD235

PARAMETER MEASUREMENT INFORMATION (continued)

Figure 5. Receiver Voltage and Current Definitions

A.

The input pulse is supplied by a generator having the following characteristics: Pulse repetition rate (PRR)

≤ 125 kHz,

B.

Figure 6. Receiver Test Circuit and Voltage Waveforms

Table 1. Differential Input Voltage Threshold Test

INPUT

OUTPUT

MEASURED

R

–6.1 V

–7 V

L

900 mV

12 V

11.1 V

L

900 mV

–1 V

–7 V

L

6 V

12 V

6 V

L

6 V

–6.5 V

–7 V

H

500 mV

12 V

11.5 V

H

500 mV

–7 V

–1 V

H

6 V

6 V

12 V

H

6 V

Open

Open

H

X

NOTE: This test is conducted to test survivability only. Data stability at the R output is not specified.

Figure 7. Test Circuit, Transient Over Voltage Test

Copyright © 2002–2008, Texas Instruments Incorporated

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