l9615 can bus transceiver l9615 meets iso/dis 11898 up to 500kbaud transmitter - generation of differential output signals - short circuit protected from -5v to 36v, detection & shutdown - slope control to reduce rfi and emi - two states adjustable slope control ( 500kbaud/ 125kbaud) receiver - differenzial input with high interference suppression - common mode input voltage range (v com ) from -2v to v s +3v package: so 8 description the l9615 is a bidirectional transceiver for signal conditioning and processing in connection with a can controller. data rates of up to 500kbaud are supported using either shielded or non- shielded pair of lines. september 2013 ? 3 1 & rx0 tx0 rx1 v s c_h c_l d96at245 1 v s + - td 1 & 1 1 + - m m m gnd 3 7 6 2 asc v ref v clmax 1 8 4 5 receiver protection transmitter block diagram so8 ordering number: l9615d 1/8
absolute maximum ratings symbol parameter value unit v s supply voltage -0.3 to 7 v v c_h , v c_l bus voltage at c_h, c_l (vs 0 to 5.5v) -5 to 36 v i c_h , i c_l off state leakage current at c_h, c_l ( vs =0 to 5.5v, v c_h = -5 to 36v, v c_l = -5 to 36 ) -3 to 5 ma v dc dc voltage at txo, asc (vs 0 to 5.5v) gnd -0.3 to v s +0.3 v i rxo output current at rxo (v s 0 to 5.5v) -0.3 to 1 ma t stg , t j storage and junction temperature range -40 to 150 c t op operating temperature range -40 to 110 c all voltages, except bus voltage, are defined with respect to pin 2 positive currents flow into the ic. thermal data symbol parameter value unit pin functions n. name function 1 txo transmitter input 2 gnd ground 3v s supply voltage 4 rxo receive output 5 rx1 reference voltage 6 c_l low side bus output 7 c_h high side bus output 8 asc adjustable slope control tx0 gnd v s rx0 rx1 c_l c_h asc 1 3 2 4 6 5 7 8 d96at246 pin connection l9615 2/8
electrical characteristics (t op = -40 to 110c; v s = 4.5 to 5.5v; dominat: vtxo = gnd; re- cessive: vtxo = v s ; all voltages, except bus voltage, are defined with respect to pin 2. positive currents flow into the ic unless otherwise specified.) symbol parameter test condition min. typ. max. unit v s supply voltage 4.5 5 5.5 v i s supply current dominant 80 ma recessive 20 ma transmitter section (r a = 60 w between c_h and c_l) c txo txo input capacitance 0v < v txo < v s 25 pf v txo txo high level input voltage 0.7 v s v s txo low level input voltage 0 0.3 v s i txo txo high level input current v txo = v s -2 0 2 m a txo low level input current v txo = gnd -275 0 -25 m a c asc asc input capacitance 0v < v asc < v s 25 pf v asc asc input voltage for high speed 0 0.1 v s asc input voltage for low speed 0.9 v s vs i asc asc input current v asc = v s 25 275 m a v asc = 0v -2 0 2 m a v c_h , v c_l bus voltage recessive recessive 0.4 v s 0.5 vs 0.6 vs i c_h , i c_l leakage current recessive vc_l = v c_h = -2 to 7v -0.7 0.7 ma v c_l = v c_h = 1 to 4v -0.3 0.3 ma r in(c_h , c_l) input resistence recessive 5 50 k w r diff(c_h , c_l) differential input resistence recessive 10 100 k w v diff = v c_h - v c_l) differential output voltage dominant, r a 1.5 3 v v diff = v c_h - v c_l) differential output voltage recessive -500 0 50 mv t d short circuit detection time c_h to c_l ; c_h to b r cs < 1w 1510 m s i a supply current in case of short circuit, c_h to c_l, c_h to b (time = t d ) 150 ma v c_lmax overvoltage protection threshold on c_l 7810v receive section v rxo rxo high level output voltage v diff < 0.5v; i rxo = 0.3ma; v c_h = -2 to 7v; v c_l = -2 to 7v; 0.9 v s vs v rxo low level output voltage v diff > 0.9v; i rxo = 1ma; v c_h = -2 to 7v; v c_l = -2 to 7v; 0.5 v v s = v c_h -v c_l input signal threshold v c_h = -2 to 7v; v c_l = -2 to 7v; 500 700 900 mv v com = (v c_h +v c_l )/2 input common mode voltage range -2 7 v v hys differential input hysteresis 150 mv reference output v rx1 reference voltage i rx1 = 0 0.45 v s 0.5 v s 0.55 v s v r rx1 output resistance 2 9 k w l9615 3/8
functional description the l9615 is used as an interface between a can controller and the physical bus. the device provides transmitting capability to the can con- troller. the transmitter outputs c_h and c_l are pro- tected against short circuits and electrical tran- sients which may occur in an automotive environ- ment. in case of short circuit (c_h to c_l, c_h to b) the protection circuit recognizes this fault con- ditionand the transmitter output stages are dis- abled with a delay of max. 10 m s to prevent de- struction of the ic and high consumption of supply current i s . if v c_l >v c_lmax the transmitter output stages would be disabled immediately. pin asc makes it possible to select two different modes of operation: high speed ( 500kbaud) and low speed ( 125kbaud). the asc pin is tied to gnd for normal operation at 500kbaud. for slower speed operation at 125kbaud the rise and fall slope of the bus out- put can be decreased to reduce emi by connect- ingg the asc pin to v s . functional table txo c_h c_l bus state rxo l h l dominant l h or floating floating v s /2 floating v s /2 recessive h dinamic characteristics (c a = 47pf between c_h and c_l; v s = 5v; t r < 5ns; c rxo = 20pf between rxo and b; r a = 60 w between c_h and c_l) symbol parameter test condition min. typ. max. unit t ot signal delay txo to c_h, c_l 50 ns s r differential output slew rate (transmitter) v asc = 0v 20 50 v/ m s v asc = v s 52 0v / m s t or signal delay c_h, c_l to r xo v asc = 0v 150 ns t otr signal delay t xo to r xo v asc = 0v 300 ns controller l9615 l9615 controller can bus system n v com r a v sn v gndn v gndd v gndm r a v diff c_h c_l system m v gndm v sm d96at247a typical application l9615 4/8
t otr t otr t or t or 0.5v 0.9v t ot t ot t r t r v tx0 v diff v rx0 d96at248 timing diagram monitoring (bit comparison) can controller 1 can controller 2 can transcelver 1 can transcelver 2 250kbit/sec 250kbit/sec hp8640 30 w 30 w equivalent terminating resistor 2 x 120 w parallel at line ends 6.8 f 6.8 f 100 w 450 w ust (noise signal) 50 w 40db 90%am, 1khz 10mhz 1mhz 100mhz 500mhz 1ghz noise resistant not noise resistant l9615 min. request boundary (automotive industry) u st (v) 30v ss 20v ss 10v ss d96at249b emc performance (receiver) l9615 5/8
50 w 80db m f 30 w 30 w 50 w 4.7nf m v tek495 analyzer equivalent terminating resistor 2 x 120 w parallel at line ends 4.7nf +5v tx0 gnd v s c_h c_l d96at250 emc performance (transmitter) 0 40 80 120 160 f(khz) d96at251 0 10 20 30 40 50 60 70 80 1 3.162 10 31.62 100 316.2 1000 3162 10000 attenuation of transmitter transceiver without emc reducing measures 0 40 80 120 160 f(khz) d96at252 0 10 20 30 40 50 60 70 80 1 3.162 10 31.62 100 316.2 1000 3162 10000 attenuation of transmitter transceiver with emc reducing measures 50 w 250khz 30 w 30 w 50 w 4.7nf m v tek495 analyzer equivalent terminating resistor 2 x 120 w parallel at line ends +5v tx0 gnd v s c_h c_l d96at253 5v emc performance (transceiver sending) 0 40 80 120 160 f(khz) d96at254 0 10 20 30 40 50 60 70 80 1 3.162 10 31.62 100 316.2 1000 3162 10000 transceiver without emc reducing measures 0 40 80 120 160 f(khz) d96at255 0 10 20 30 40 50 60 70 80 1 3.162 10 31.62 100 316.2 1000 3162 10000 transceiver with emc reducing measures l9615 6/8
dim. mm inch min. typ. max. min. typ. max. a 1.75 0.069 a1 0.1 0.25 0.004 0.010 a2 1.65 0.065 a3 0.65 0.85 0.026 0.033 b 0.35 0.48 0.014 0.019 b1 0.19 0.25 0.007 0.010 c 0.25 0.5 0.010 0.020 c1 45 (typ.) d (1) 4.8 5.0 0.189 0.197 e 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 3.81 0.150 f (1) 3.8 4.0 0.15 0.157 l 0.4 1.27 0.016 0.050 m 0.6 0.024 s8 (max.) (1) d and f do not include mold flash or protrusions. mold flash or potrusions shall not exceed 0.15mm (.006inch). so8 outline and mechanical data l9615 7/8
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