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AS8221 Datasheet(PDF) 10 Page - ams AG

Part # AS8221
Description  FlexRay Standard Transceiver
PDF  41 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS8221 Datasheet(HTML) 10 Page - ams AG

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AS8221
Datasheet - Electrical Character i s t ics
www.austriamicrosystems.com/flexray/AS8221
Revision 1.4
10 - 41
tRxD_RISE
Rise time RxD voltage
20% - 80% of VRxD;
CRxD=15 pF
(see footnote 3)
25
ns
tBUSIdleDetection
Idle detection time
VBUS: 400mV → 0V
50
173
200
ns
tBUSActivityDetection
Activity detection time
VBUS: 0V → 400mV
100
173
250
ns
tBUSIdleReaction
Idle reaction time
VBUS: 400mV → 0V
50
192
300
ns
tBUSActivityReaction
Activity reaction time
VBUS: 0V → 400mV
100
200
350
ns
Wake-Up Detector
tBWU_D0
Data0 detection time in remote
wake-up pattern
-10V < (VBP, VBM) < 15V
12
4
µs
tBWU_Idle
Idle or Data1 detection time in
remote wake-up pattern
-10V < (VBP, VBM) < 15V
12
4
µs
tBWU_Detect
Total remote wake-up detection
time
-10V < (VBP, VBM) < 15V
48
73
140
µs
VBWUTH
Bus wake-up detection threshold
-10V < (VBP, VBM) < 15V
-300
-250
-150
mV
VLWUTH
Local wake-up detection
threshold
22.8
4
V
ILWUL
Low level input current on local
WAKE pin
VBAT = 12V; VLWAKE = 2V for
t < tLWUFilter
-20
-10
-5
µA
ILWUH
High level input current on local
WAKE pin
VBAT = 12V; VLWAKE = 4V for
t < tLWUFilter
511
20
µA
tLWUFilter
Local wake filter time
1
20
40
µs
Supply Voltage Monitor
VBATTHH
VBAT undervoltage recovery
threshold
3.5
4
4.5
V
VBATTHL
VBAT undervoltage detection
threshold
2.5
3
3.5
V
VCCTHH
VCC under-voltage recovery
threshold
3.5
4
4.5
V
VCCTHL
VCC undervoltage detection
threshold
2.5
3
3.5
V
VIOTHH
VIO undervoltage recovery
threshold
1.25
1.6
2.0
V
VIOTHL
VIO undervoltage detection
threshold
0.75
1.1
1.5
V
tUV_DETECT
Detection time for undervoltage
at VBAT, VCC, VIO
100
300
700
ms
tUV_REC
Detection time for undervoltage
recovery at VBAT, VCC, VIO
0.7
2
5
ms
Bus Error Detection
ITHL
Absolute bus current for low
current detection
NORMAL mode, Transmitter
enabled
5mA
ITHH
Absolute bus current for high
current detection
NORMAL mode, Transmitter
enabled
40
mA
Table 3. Electrical Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Units



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