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L9779WD 数据表(PDF) 98 Page - STMicroelectronics |
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L9779WD 数据表(HTML) 98 Page - STMicroelectronics |
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98 / 170 page  Functional description L9779WD 98/170 DocID027452 Rev 5 CAN_H CAN_L VTHrec Differential receiver threshold voltage dominant to recessive state Active mode 0.5 - - V SRH CANH slew rate between 10% and 90% -5 - 35 V/µs SRL CANL slew rate between 10% and 90% -5 - 35 V/µs DIFF_SR Slew rate difference between CANH and CANL -- - 60 % SRVDIFF Slew rate of Vdiff = VCANH-VCANL - 12 - 100 V/µs VTHhys VTHdom - VTHrec hysteresis -25 - 50 mV Table 42. CAN transceiver electrical characteristics (continued) Pin Symbol Description Test conditions Min Typ Max Unit Table 43. CAN transceiver timing characteristics Symbol Description Test conditions Min Typ Max Unit tTXpd,hl Propagation delay TX_CAN to RX_CAN (High to Low) Active mode; 50% VTX_CAN to 50% VRX_CAN; CL=100 pF; CRX_CAN = 15 pF; RL = 60 Ω; Guaranteed by design. 0- 255 ns CRX_CAN = 100 pF @Troom and Tcold -- 265 ns CRX_CAN = 100 pF @Thot -- 275 ns tTXpd,lh Propagation delay TX_CAN to RX_CAN (Low to High) Active mode; 50% VTX_CAN to 50% VRX_CAN; CL = 100 pF; CRX_CAN = 15 pF; RL = 60 Ω; Guaranteed by design. 0- 255 ns CRX_CAN = 100 pF @Troom and Tcold -- 265 ns CRX_CAN = 100 pF @Thot -- 275 ns tdom(TX_CAN) TX_CAN dominant time-out Tested by scan 525 700 875 µs tCAN CAN permanent dominant time-out Tested by scan - 700 - µs |
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