AS8221
Data Sheet - Detailed Description
8.19 Test Circuits
Figure 18. Test Circuit for Automotive Transients
ISO 7637
PULSE
GENERATOR
12V or 42V
10uF
+5V
100nF
Transients in accordance with ISO7637:
test pulses 1, 2, 3a, 3b, 4, 5
Test conditions: Normal mode bus idle,
Normal mode bus active (TXD=5 MHz, TXEN=1kHz)
14
19
4
VBAT
VCC
VIO
7
RXD
15pF
1nF
AS8221
18
17
BP
ISO 7637
PULSE
GENERATOR
RL
CL
BM
1nF
Figure 19. Test circuit for dynamic characteristics
+12V
10uF
+5V
100nF
14
19
VCC
4
VBAT
VIO
7
RXD
15pF
AS8221
18
17
BP
CL
RL
BM
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Revision 1.1
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AMSCO [ AMS(艾迈斯) ]
