PCA82C252T Просмотр технического описания (PDF) - Philips Electronics

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PCA82C252T

Fault-tolerant CAN transceiver

Philips Electronics 

Philips Semiconductors

Fault-tolerant CAN transceiver

Product specification

PCA82C252

TEST AND APPLICATION INFORMATION

dbook, full pagewidth

+5 V

+12 V

INH

BAT

VCC

1

WAKE

7

14

10

RTH

R1

8

TXD

2

STB

5

EN

6

PCA82C252

CANL

12

CANH

11

RXD

3

20 pF

13

GND

RTL

9

4

R1

NERR

C1

C2

C1

MBH550

For testing, the 100 Ω termination resistors are not connected to RTH or RTL because a minimum 500 Ω per transceiver is allowed.

The capacitive bus load of 10 nF is split up into 3 capacitors to simulate the cable.

Fig.3 Test circuit for dynamic characteristics.

andbook, full pagewidth

VTXD

VCANL

VCANH

Vdiff

VRXD

Vdiff = VCANH − VCANL

1997 Oct 28

tPD(L)

tPD(H)

Fig.4 Timing diagram for dynamic characteristics.

12

VCC

0V

5V

3.6 V

1.4 V

0V

2.2 V

0.7 V

−2.9 V

−5 V

0.7VCC

0.3VCC

MBH549

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