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AS8221-ASST 数据表(PDF) 9 Page - ams AG |
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AS8221-ASST 数据表(HTML) 9 Page - ams AG |
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9 / 4 page ![]() www.austriamicrosystems.com/flexray/AS8221 Revision 1.1 9 - 43 AS8221 Data Sheet - E l e c t r i c a l C h a r a c t e r i s t i c s ΔVBUS_COM Matching between Data0 and Data1 common mode voltage VBUS_COM_D0 - VBUS_COM_D1 40 ≤ RL ≤ 55Ω -200 0 200 mV VBUS_DIFF_Idle Absolute differential bus voltage in bus idle mode Load on BM/BM: 40 Ω || 100pF 0 30 mV IBPBMShortMax IBMBPShortMax Absolute max current when BP is shorted to BM VBP=VBM 35 +100 mA IBPGNDShortMax Absolute max current when BP is shorted to GND VBP= 0V 48 +100 mA IBMGNDShortMax Absolute max current when BM is shorted to GND VBM= 0V 48 +100 mA IBP-5VShortMax Absolute max current when BP is shorted to -5 V VBP= -5V 48 +100 mA IBM-5VShortMax Absolute max current when BM is shorted to -5 V VBM= -5V 48 +100 mA IBP27VShortMax Absolute max current when BP is shorted to 27 V VBP= 27V 71 +100 mA IBM27VShortMax Absolute max current when BM is shorted to 27 V VBM= 27V 71 +100 mA IBP48VShortMax Absolute max current when BP is shorted to 48 V VBP= 48V 72 +100 mA IBM48VShortMax Absolute max current when BM is shorted to 48 V VBM= 48V 72 +100 mA tTxD_BUS01 Delay time from TxD to BUS positive edge tTxD_RISE = 5ns 22 50 ns tTxD_BUS10 Delay time from TxD to BUS negative edge tTxD_FALL = 5ns 22 50 ns tTxD_MISMATCH Delay time from TxD to BUS mismatch tTxD_BUS10 - tTxD_BUS01 -4 0 4 ns tBUS10 Fall time differential bus voltage 80% - 20% of VBUS 3.75 12 18.75 ns tBUS01 Rise time differential bus voltage 20% - 80% of VBUS 3.75 12 18.75 ns tTxEN_BUS_Idle_Active Delay time from TxEN to bus active 14 50 ns tTxEN_BUS_Active_Idle Delay time from TxEN to bus idle 10 50 ns tTxEN_MISMATCH Delay time from TxEN to bus mismatch |tTxEN_BUS_Idle_Active - tTxEN_BUS_Active_Idle| 450 ns tBGE_BUS_Idle_Active Delay time from BGE to bus active 15 50 ns tBGE_BUS_Active_Idle Delay time from BGE to bus idle 11 50 ns tBUS_Idle_Active Differential bus voltage transition time: idle to active 530 ns tBUS_Active_Idle Differential bus voltage transition time: active to idle 230 ns tTxEN_timeout TxEN timeout 1.5 4.9 15 ms Table 3. Electrical Characteristics Symbol Parameter Conditions Min Typ Max Units |
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