MCP2551

DS21667C-page 10

Preliminary

 2002 Microchip Technology Inc.

FIGURE 2-3:

TEST CIRCUIT FOR AUTOMOTIVE TRANSIENTS

FIGURE 2-4:

HYSTERESIS OF THE RECEIVER

Rext

GND

RXD

TXD

60

Ω

500 pF

500 pF

Note:

GND via a load resistor depending

on desired operating mode as

described in Section 1.7.8

CANH

CANL

CAN

Transceiver

Schaffner

Generator

The wave forms of the applied transients shall be in accordance with “ISO-7637, Part 1”, test pulses 1, 2, 3a and 3b.

0.5

0.9

hysteresis

D19

RXD (receive data

output voltage)