Datasheet

 2003 Microchip Technology Inc. DS21667D-page 11
MCP2551
FIGURE 2-2: TEST CIRCUIT FOR AUTOMOTIVE TRANSIENTS
FIGURE 2-3: HYSTERESIS OF THE RECEIVER
R
S
Rext
GND
RXD
V
REF
TXD
60Ω
500 pF
500 pF
Note: R
S
may be connected to V
DD
or
GND via a load resistor depending
on desired operating mode as
described in Section 1.7.8, “Slope
Resistor Input (Rs)”
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.
VOH
VOL
0.5 0.9
hysteresis
D19
Vdiff (V)
RXD (receive data
output voltage)
VDIFF (r)(i)
V
DIFF
(d)(i)