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technical data may 20 1 1 , ver.0 1 1 can transceiver the i l a82c251 is the interface between the can protocol controller and the physical bus. the device provides differential transmit capability to the bus and differential receive capability to the can controller. the ic is intended for automotive electronic applications ms - 012aa (so - 8) plastic package fig 1 C external view of packaged ic features ? fully compatible with the iso 11898 - 24 v standard ? thermally protected ? short - circuit proof ? three mode operation ? an unpowered node does not disturb the bus lines ? at least 110 nodes can be connected ? high speed of data transfer (up to 1 mbit/s) ? high immunity against electromagnetic interference. permissible value of electrostatic potential is 2000v. the ic is realized in 8 - pin plastic so package ( ms - 012aa) fig . 2 C pin layout 05 01 08 02 07 03 06 04 txd gnd v cc rxd v ref canl canl r s ordering information device operating temperature range package shipping ILA82C251d t j = - 40 ? to 125 ? c sop - 8 tube ILA82C251dt t j = - 40 ? to 125 ? c sop - 8 t ape & reel ILA82C251
ILA82C251 2 may 20 1 1 , ver.0 1 table 1 C pin description pin nu m- ber pad number symbol description 01 01 txd t ransmit data input (transmitter) 02 02 gnd ground 03 03 v cc s upply voltage 04 05 rxd r eceiv e data output ( receiver ) 05 06 v ref r eference voltage output 06 07 canl low - level can voltage input/output 07 08 canh high - level can voltage input/output 08 09 r s mode set input - 04 - not bonded vd1, vd2 C diodes ; vt1, vt2 - transistors fig . 3 C block diagram driver protection block switch mode block receiver reference voltage 01 vd2 vd1 vt1 04 08 05 03 07 06 txd r s rxd v ref v cc can high canl 02 vt2 gnd input signal block
ILA82C251 3 may 20 1 1 , ver.0 1 table 2 C absolute maximum ratin g s symbol parameter target unit min max v cc supply voltage - 0 . 3 7 . 0 v v n 01, 04, 05, 08 pin voltage - 0 . 3 v cc + 0 . 3 v v tr 06 , 07 pin transient voltage - 200 200 v t stg storage temperature - 60 150 o c t j junction temperature - 150 o c * stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. exposure to absolute - maximum - rated conditions for extended periods may affect device reliability . table 3 C recommended operati ng condition symbol parameter target unit min max v cc supply voltage 4 . 5 5 . 5 v v can input/output high and low level voltage of can - signal - 36 36 v
ILA82C251 4 may 20 1 1 , ver.0 1 table 4 C electric parameters at - 40 ? t amb + 125 ? supply i 3 supply current dominant; v 1 = 1 . 0 v, v cc ? 5 . 1 v - 78 ma dominant; v 1 = 1 . 0 v, v cc ? 5 . 25 v - 80 dominant; v 1 = 1 . 0 v, v cc ? 5 . 5 v - 85 recessive; v 1 = 4 . 0 v, r 8 = 47 k ? - 10 standby mode 1) - 0 . 315 standby mode 2) - 0 . 275 transmitter v ih h igh - level input voltage output recessive 0 . 7 v cc v cc +0 . 3 v v il l ow - level input voltage output d ominant - 0 . 3 0 . 3 v cc v i ih h igh - level input current 4 . 5 v ? v cc ? 5 . 5 v v 1 = 4 . 0 v - 200 30 ? a i il l ow - level input current 4 . 5 v ? v cc ? 5 . 5 v v 1 = 1 . 0 v - 2 00 - 100 ? a v 6,7 r ecessive bus voltage 4 . 5 v ? v cc ? 5 . 5 v v 1 = 4 . 0 v, no load 2 . 0 3 . 0 v i lo off - state output lea k- age current 4 . 5 v ? v cc ? 5 . 5 v - 2 . 0 v ? ( v 6 , v 7 ) ? 7 . 0 v - 2 . 0 2 . 0 ma 4 . 5 v ? v cc ? 5 . 5 v - 5 . 0 v ? ( v 6 , v 7 ) ? 36 v - 1 0 1 0 v 7 canh output voltage 4 . 75 v ? v ? 5 . 5 v v 1 = 1 . 0 v 3 . 0 4 . 5 v v 1 = 1 . 0 v 4 . 5 v ? v ? 4 . 75 v 2 . 75 4 . 5 v 6 canl output voltage 4 . 5 v ? v cc ? 5 . 5 v v 1 = 1 . 0 v 0 . 5 2 . 0 v
ILA82C251 5 may 20 1 1 , ver.0 1 table 4 continued symbol parameter measurement mode target unit min max ? v 6,7 difference between output voltage at pins 6 and 7 4 . 5 v ? v cc ? 5 . 5 v v 1 = 1 . 0 v 1 . 5 3 . 0 v v 1 = 1 . 0 v , r l = 45 ? 1 . 5 - v 1 = 4 . 0 v , no load - 0 . 5 0 . 05 i sc7 canh short - circuit current 4 . 5 v ? v cc ? 5 . 5 v v 7 = - 5 . 0 v - - 200 ma i sc6 canl signal short - circuit current 4 . 5 v ? v cc ? 5 . 5 v v 6 = 36 v - 200 ma receiver ( pins 06, 07 are externally controlled , v 4 = 4 . 0 v , - 2 . 0 v ? ( v 6 , v 7 ) ? 7 . 0 v , unless otherwise specified ) v diff ( r ) differential input vol t- age (recessive mode) 3) - 1 . 0 0 . 5 v 4 . 5 v ? v cc ? 5 . 5 v - 7 . 0 v ? ( v 6 , v 7 ) ? 12 v 3) - 1 . 0 0 . 4 v diff(d) differential input vol t- age (dominant mode) - 0 . 9 5 . 0 v 4 . 5 v ? v cc ? 5 . 5 v - 7 . 0 v ? ( v 6 , v 7 ) ? 12 v 1 . 0 5 . 0 4) 0 . 97 5 . 0 4 . 5 v ? v cc ? 5 . 1 v 4) 0 . 91 5 . 0 v oh high - level output vol t- age (pin 4) 4 . 5 v ? v cc ? 5 . 5 v i 4 = - 100 ? a 0 . 8 v cc v cc v v ol low - level output vol t- age (pin 4) 4 . 5 v ? v cc ? 5 . 5 v i 4 = 1 . 0 ma 0 0 . 2 v cc v 4 . 5 v ? v cc ? 5 . 5 v i 4 = 10 ma 0 1 . 5 r i canl and canh i nput resistance l 4 . 5 v ? v cc ? 5 . 5 v 5 . 0 25 k ? r diff d ifferential input resistance 4 . 5 v ? v cc ? 5 . 5 v 20 100 k ? reference voltage v ref reference voltage 4 . 5 v ? v cc ? 5 . 5 v v 8 = 1 . 0 v , ? i 5 ? ? 50 ?? 0 . 45 v cc 0 . 5 5 v cc v 4 . 5 v ? v cc ? 5 . 5 v v 8 = 4 . 0 v , ? i 5 ? ? 5 . 0 ? a 0 . 4 v cc 0 . 6 v cc
ILA82C251 6 may 20 1 1 , ver.0 1 table 4 continued symbol parameter measurement mode target unit min max timing parameters (r l = 60 ? , c l = 100 pf, unless otherwise specified) t bit one bit transmitting minimum time 4 . 5 v ? v cc ? 5 . 5 v r 8 = 0 ? - 1 . 0 ? s t ontxd input data transfer to active bus delay 4 . 5 v ? v cc ? 5 . 5 v r 8 = 0 ? - 50 ns t offtxd input data transfer to inactive bus delay 4 . 5 v ? v cc ? 5 . 5 v r 8 = 0 ? - 80 ns t onrxd input data transfer to active receiver delay 4 . 5 v ? v cc ? 5 . 5 v r 8 = 0 ? - 120 ns 4 . 5 v ? v cc ? 5 . 5 v r 8 = 47 k ? - 550 t offrxd input data transfer to inactive receiver delay 4 . 5 v ? v cc ? 5 . 5 v r 8 = 0 ? - 190 ns 4 . 5 v ? v cc ? 5 . 5 v r 8 = 47 k ? - 400 t wake wake - up time from standby mode (via 08 pin) 4 . 5 v ? v cc ? 5 . 5 v - 20 ? s t drxdl bus input data transfer delay to low on output of received data 4 . 5 v ? v cc ? 5 . 5 v v 8 = 4 . 0 v - 3 . 0 ? s standby mode and low rfi mode v stb input voltage for standby mode 4 . 5 v ? v cc ? 5 . 5 v 0 . 75 v cc - v i slope input current for l ow rfi mode 4 . 5 v ? v cc ? 5 . 5 v - 200 - 10 ? a v slope input voltage for l ow rfi mode 4 . 5 v ? v cc ? 5 . 5 v 0 . 4 v cc 0 . 6 v cc v _______ 1) i 1 = i 4 = i 5 = 0 ma, v 8 = v cc 2) i 1 = i 4 = i 5 = 0 ma, v 8 = v cc , t amb ? 90 o c. 3) for the receiver in all modes. 4) standby mode
ILA82C251 7 may 20 1 1 , ver.0 1 table 5 typical values of electric parameters symbol parameter measurement mode typical va l- ue unit v diff ( hys ) d ifferential hysteresis voltage v cc from 4 . 5 to 5 . 5 v 150 mv | sr | canh , canl slew rate v cc from 4 . 5 to 5 . 5 v ; r 8 = 47 k ? 7 . 0 v / ? s i sc7 high level can short circuit current v cc from 4 . 5 to 5 . 5 v ; v 7 = - 36 v - 100 ma functional description the ina82c251 provides differential transmit capability to the bus and differential receive capability to the can controller . data transfer rate is up to 1 mbit/s. output stage has good load capacity. it guarantees 2v peak - to - peak output voltage for 60 ? load . ILA82C251d has thermal and short circuit protection , high immunity to emi and is fully compatible with the iso 11898 - 24 v standard. the ic provide s three operation modes: high - speed, reduced rfi mode, standby mode . the design of ILA82C251d permits possibility of adjustment of rise and fall slope of ou t- put stages (transistors) . pin r s is used to select one of three modes of operation : high - speed, reduced rfi or standby. high level applied to this pin switch es the ic to standby mode, low level C to high - speed mode. the high - speed mode is selected by connecting pin r s to ground. to reduce rfi, connect pin r s by resistor rext to ground. the rise and fall slope of output stages (transistors) can be regulated with rext resistance. to select high - speed dominant mode a low level v oltage (~ 1 v) is applied to txd pin and r s i s connected to ground, canh and canl pins are connected by 60 ? resistor. guaranteed peak - to - peak output voltage (high and low level) will be 1 . 5 v for all operating supply voltage range to select recessive mode a high level voltage (~ 4 v) is applied to tx d pin and r s is co n- nected to ground . in recessive mode bus output voltage v 6,7 is about (~ 2.5 v). high level (~ 4v) applied to pin r s switches ic to standby mode (with low power consumption); in this mode consumption current does n ` t exceed 27 0 ? a. in this mode transmitter is turn off and consumption current of receiver and all circuit is significantly d e- creased. reference voltage value v ref per 05 output is half of supply voltage.
ILA82C251 8 may 20 1 1 , ver.0 1 table 6 - truth table of the transceiver supply vol t- age range , v cc , v txd pin canh pin canl pin bus state rxd output 4 . 5 ? 5 . 5 l h l dominant l 4 . 5 ? 5 . 5 h floating floating recessive h * 4 . 5 ? 5 . 5 x floating, if v rs ? 0 . 75 v cc floating, if v rs ? 0 . 75 v cc floating h * 0 ? 5 . 5 floating floating floating floating x notes 1 h C high level voltage; l C low level voltage; x C dont care (h or l). 2 floating state C half of sum of output levels on pins 06 and 07 ( v o( canl ) + v o( canh ) / 2). __________ * if another bus node is transmitting a dominant bit , then rxd shall be low table 7 C transceiver mode table r s pin state mode r s pin resulting voltage or current v rs ? 0 . 75 v cc standby - i rs ? 10 ? a 10 ? a ? - i rs ? 200 ? a slope control (reduced rfi) 0 . 4 v cc ? v rs ? 0 . 6 v cc v rs ? 0 . 3 v cc high C speed - i rs ? 500 ? a
ILA82C251 9 may 20 1 1 , ver.0 1 table 8 - truth table of the receiver input differential voltage v diff *, rxd pin v diff ? 0 . 9 v l 0 . 5 v ? v diff ? 0 . 9 v ** v diff ? 0 . 5 v h absent h _________ * input difference voltage v diff , v is determined by formula v diff = v 7 C v 6 , ( 1 ) v 7 C canh output voltage , v ; v 6 - canl output voltage , v ** not determined ( hysteresis zone ) fig. 4 C t ontxd , t onrxd , t offtxd , t offrxd parameter s measurement timing diagram t ontxd u v pin 01 (txd) pins 06, 07 ( canl , can high ) pin 0 4 (rxd) 0 0 ,9 v 0 ,5 v 0 ,3u cc 0 ,7u cc u cc 0 v u o(d) u o( r) u cc 0 v t ? s t onrxd t offtxd t offrxd ? u 7,6
ILA82C251 10 may 20 1 1 , ver.0 1 fig. 5 C v diff(hys) parameter measurement timing diagram fig. 6 C t wake parameter measurement timing diagram u v t ? s pin 08 (r s ) 0 pin 0 4 (rxd) u cc 0 t wake u v pin 0 4 (rxd) hysteresis 0,5 0,9 high level low level u diff v
ILA82C251 11 may 20 1 1 , ver.0 1 t drxdl 15 ? s fig. 7 C t drxdl parameter measurement timing diagram u v t ? s pins 07 ,06 ( can high , canl ) 0 pin 0 4 (rxd) 1,5 v 0 t drxdl
ILA82C251 12 may 20 1 1 , ver.0 1 fig. 8 C application diagramm p8 ? c592 mcu v ref ctx0 ctx0 ctx1 px, y txd c1 100 nf r s rxd can high canl ILA82C251d can bus line r ext r1 120 ? r2 120 ? + 5 v v cc gnd
ILA82C251 13 may 20 1 1 , ver.0 1 package dimensions d e1 h b e ? ? ? fig . 9 C ms - 012 a a package dimensions m d e 1 c a 1 e b c 0 , 25 ( 0 , 010 ) h c l hx 45 01 04 05 08 mounting plane

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