AS8221
Data Sheet - Electrical Characteristics
Table 3. Electrical Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
_
BUS COM_D0 - VBUS COM_D1
_
Matching between Data0 and
Data1 common mode voltage
ΔVBUS_COM
-200
0
200
mV
40 ≤ RL ≤ 55Ω
Absolute differential bus voltage
in bus idle mode
VBUS_DIFF_Idle
Load on BM/BM: 40Ω || 100pF
BP=VBM
0
30
mV
mA
mA
mA
mA
mA
mA
mA
mA
mA
ns
IBPBMShortMax
IBMBPShortMax
Absolute max current when BP is
shorted to BM
V
35
48
48
48
48
71
71
72
72
22
22
0
+100
+100
+100
+100
+100
+100
+100
+100
+100
50
Absolute max current when BP is
shorted to GND
IBPGNDShortMax
IBMGNDShortMax
IBP-5VShortMax
IBM-5VShortMax
IBP27VShortMax
IBM27VShortMax
IBP48VShortMax
IBM48VShortMax
tTxD_BUS01
VBP= 0V
VBM= 0V
Absolute max current when BM is
shorted to GND
Absolute max current when BP is
shorted to -5 V
VBP= -5V
Absolute max current when BM is
shorted to -5 V
VBM= -5V
VBP= 27V
Absolute max current when BP is
shorted to 27 V
Absolute max current when BM is
shorted to 27 V
VBM= 27V
Absolute max current when BP is
shorted to 48 V
VBP= 48V
VBM= 48V
Absolute max current when BM is
shorted to 48 V
Delay time from TxD to BUS
positive edge
tTxD_RISE = 5ns
Delay time from TxD to BUS
negative edge
tTxD_BUS10
tTxD_FALL = 5ns
50
ns
Delay time from TxD to BUS
mismatch
tTxD_MISMATCH
tTxD_BUS10 - tTxD_BUS01
-4
4
ns
tBUS10
tBUS01
80% - 20% of VBUS
20% - 80% of VBUS
Fall time differential bus voltage
Rise time differential bus voltage
3.75
3.75
12
12
18.75
18.75
ns
ns
Delay time from TxEN to bus
active
tTxEN_BUS_Idle_Active
tTxEN_BUS_Active_Idle
tTxEN_MISMATCH
14
10
4
50
50
50
ns
ns
ns
Delay time from TxEN to bus idle
|tTxEN_BUS_Idle_Active
tTxEN_BUS_Active_Idle
-
|
Delay time from TxEN to bus
mismatch
Delay time from BGE to bus
active
tBGE_BUS_Idle_Active
tBGE_BUS_Active_Idle
tBUS_Idle_Active
15
11
5
50
50
30
ns
ns
ns
Delay time from BGE to bus idle
Differential bus voltage transition
time: idle to active
Differential bus voltage transition
time: active to idle
tBUS_Active_Idle
tTxEN_timeout
2
30
15
ns
TxEN timeout
1.5
4.9
ms
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