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AS8222 Datasheet(PDF) 12 Page - ams AG |
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AS8222 Datasheet(HTML) 12 Page - ams AG |
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12 / 43 page  AS8222 Datasheet - Electrical Character i s t ics www.ams.com/eng/FlexRay/AS8222 Revision 1.0 11 - 42 6.4 Receiver The following parameters are applicable to all the branch receivers. tTXEN_BUS_Active_Idle dBDTxai Delay time from TxEN to bus idle Propagation delay active → idle RL=45 Ω; CL= 100 pF 18 50 100 ns ns tTXEN_MISMATCH dBDTxDM Delay time from TxEN to BUS mismatch | dBDTxia - dBDTxai | | tTXEN_BUS_Idle_Active - tTXEN_BUS_Active_Idle |; RL=45 Ω; CL= 100 pF 050 50 ns ns tBGE_BUS_IdleActive dBDTxia Delay time from BGE to bus active Propagation delay idle → active 18 50 100 ns ns tBGE_BUS_Active_Idle dBDTxai Delay time from BGE to bus idle Propagation delay active → idle 18 50 100 ns ns tBUS_Idle_Active dBusTxia Differential bus voltage transition time: idle to active Transition time idle → active RL=45 Ω; CL= 100 pF 530 30 ns ns tBUS_Active_Idle dBusTxai Differential bus voltage transition time: active to idle Transition time active → idle RL=45 Ω; CL= 100 pF 230 30 ns ns tTxEN_timeout TxEN timeout 3 5 10 ms Table 6. Receiver Symbol Parameter Conditions Min Typ Max Units RBP, RBM RCM1, RCM2 BP, BM input resistance Receiver common mode input resistance Idle mode; RBUS= ∞ 10 10 25 40 40 k Ω k Ω RDIFF BP, BM differential input resistance Idle mode; RBUS= ∞ 20 50 80 k Ω VBP, VBM uCM Common mode voltage range Common mode voltage range (with respect to GND) that does not disturb the receive function -10 -10 +15 +15 V V VBPidle, VBMidle uBias Idle voltage in non-low-power modes on pin BP, BM Bus bias voltage during BD_Normal mode Non-low-power modes; VTXEN=VIO 40 Ω < RL < 55 Ω 0.4*VCC 1800 0.5*VCC 0.6*VCC 3200 V mV Table 5. Transmitter Symbol Parameter Conditions Min Typ Max Units |
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