L9615

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 (VCOM) FROM -2V TO VS+3V PACKAGE: SO 8 DESCRIPTION The L9615 is a bidirectional transceiver for signal BLOCK DIAGRAM 3 SO8 ORDERING NUMBER: L9615D conditioning and processing in connection with a CAN controller. Data rates of up to 500KBAUD are supported using either shielded or nonshielded pair of lines. VS 1 & td TX0 1 ≥1 & 1 ASC RX0 8 4 + VS + VCLmax M M 7 C_H C_L 1 6 1 RX1 5 M VREF 2 GND RECEIVER PROTECTION TRANSMITTER D96AT245 February 1998 1/8 L9615 ABSOLUTE MAXIMUM RATINGS Symbol VS VC_H, VC_L IC_H, IC_L VDC IRXO Tstg, TJ Top Supply Voltage Bus Voltage at C_H, C_L (VS 0 to 5.5V) Off State Leakage Current at C_H, C_L ( VS =0 to 5.5V, VC_H = -5 to 36V, VC_L = -5 to 36 ) DC Voltage at TXO, ASC (VS 0 to 5.5V) Output Current at RXO (VS 0 to 5.5V) Storage and Junction Temperature Range Operating Temperature Range Parameter Value -0.3 to 7 -5 to 36 -3 to 5 GND -0.3 to VS +0.3 -0.3 to 1 -40 to 150 -40 to 110 Unit V V mA V mA °C °C All voltages, except bus voltage, are defined with respect to pin 2 Positive currents flow into the IC. PIN CONNECTION TX0 GND VS RX0 1 2 3 4 D96AT246 8 7 6 5 ASC C_H C_L RX1 THERMAL DATA Symbol Parameter Value Unit PIN FUNCTIONS N. 1 2 3 4 5 6 7 8 Name TXO GND VS RXO RX1 C_L C_H ASC Transmitter Input Ground Supply Voltage Receive Output Reference Voltage Low Side Bus Output High Side Bus Output Adjustable Slope Control Function 2/8 L9615 ELECTRICAL CHARACTERISTICS (TOP = -40 to 110°C; VS = 4.5 to 5.5V; Dominat: VTXO = GND; Recessive: VTXO = VS; All voltages, except bus voltage, are defined with respect to pin 2. Positive currents flow into the IC unless otherwise specified.) Symbol VS IS Parameter Supply Voltage Supply Current Dominant Recessive Test Condition Min. 4.5 Typ. 5 Max. 5.5 80 20 Unit V mA mA TRANSMITTER SECTION (RA = 60Ω between C_H and C_L) CTXO VTXO ITXO CASC VASC TXO Input Capacitance TXO High Level Input Voltage TXO Low Level Input Voltage TXO High Level Input Current TXO Low Level Input Current ASC Input Capacitance ASC Input Voltage for High Speed ASC Input Voltage for Low Speed IASC VC_H, VC_L IC_H, IC_L RIN(C_H, C_L) RDiff(C_H, C_L) VDiff = VC_H - V C_L) VDiff = VC_H - V C_L) td IA ASC Input Current Bus Voltage Recessive Leakage Current Recessive Input Resistence Differential Input Resistence Differential Output Voltage Differential Output Voltage Short Circuit Detection Time C_H to C_L ; C_H to B Supply Current in Case of Short Circuit, C_H to C_L, C_H to B (time = td) Overvoltage Protection Threshold on C_L 7 VASC = VS VASC = 0V Recessive VC_L = VC_H = -2 to 7V VC_L = VC_H = 1 to 4V Recessive Recessive Dominant, RA Recessive RCS < 1Ω VTXO = VS VTXO = GND 0V < VASC < VS 0 0.9 VS 25 -2 0.4 VS -0.7 -0.3 5 10 1.5 -500 1 0 5 150 0 0.5 Vs 0V < VTXO < VS 0.7 VS 0 -2 -275 0 0 25 0.1 VS VS 275 2 0.6 Vs 0.7 0.3 50 100 3 50 10 µA µA mA mA KΩ KΩ V mV µs mA 25 VS 0.3 VS 2 -25 µA µA pF pF VC_Lmax 8 10 V RECEIVE SECTION VRXO RXO High Level Output Voltage RXO Low Level Output Voltage VS = VC_H -VC_L VCOM = (VC_H +VC_L)/2 VHYS Input Signal Threshold Input Common Mode Voltage Range Differential Input Hysteresis VDiff < 0.5V; IRXO = 0.3mA; VC_H = -2 to 7V; VC_L = -2 to 7V; VDiff > 0.9V; IRXO = 1mA; VC_H = -2 to 7V; VC_L = -2 to 7V; VC_H = -2 to 7V; VC_L = -2 to 7V; 500 -2 150 700 0.9 VS Vs 0.5 900 7 V V mV V mV REFERENCE OUTPUT VRX1 RRX1 Reference Voltage Output Resistance IRX1 = 0 0.45 VS 0.5 VS 0.55 VS 2 9 V KΩ 3/8 L9615 DINAMIC CHARACTERISTICS (CA = 47pF between C_H and C_L; VS = 5V; tR < 5ns; CRXO = 20pF between RXO and B; RA = 60Ω between C_H and C_L) Symbol tOT SR tOR tOTR Parameter Signal Delay TXO to C_H, C_L Differential Output Slew Rate (Transmitter) Signal Delay C_H, C_L to RXO Signal Delay TXO to RXO VASC = 0V VASC = VS VASC = 0V VASC = 0V 20 5 Test Condition Min. Typ. Max. 50 50 20 150 300 Unit ns V/µs V/µs ns ns 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 controller. The transmitter outputs C_H and C_L are protected against short circuits and electrical transients which may occur in an automotive environment. In case of short circuit (C_H to C_L, C_H to B) the protection circuit recognizes this fault conditionand the transmitter output stages are disabled with a delay of max. 10µs to prevent destruction of the IC and high consumption of supply current IS. If VC_L >VC_Lmax the transmitter output stages would be disabled immediately. Pin ASC makes it possible to select two different TYPICAL APPLICATION 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 output can be decreased to reduce EMI by connectingg the ASC pin to VS. FUNCTIONAL TABLE TXO L H or Floating C_H H Floating VS/2 C_L L Floating VS/2 Bus State Dominant Recessive RXO L H VCOM VSn SYSTEM n RA VSm SYSTEM m CAN BUS CONTROLLER L9615 L9615 CONTROLLER VGNDn VGNDD RA VGNDm C_L C_H VDiff D96AT247A VGNDm 4/8 L9615 TIMING DIAGRAM tR tR VTX0 tOT tOT 0.9V VDiff 0.5V VRX0 tOR D96AT248 tOR tOTR tOTR EMC PERFORMANCE (RECEIVER) EQUIVALENT TERMINATING RESISTOR 2 x 120Ω PARALLEL AT LINE ENDS 6.8∝F 30Ω CAN CONTROLLER 1 MONITORING (BIT COMPARISON) CAN TRANSCELVER 1 450Ω 30Ω Ust (Noise signal) 100Ω 50Ω 250Kbit/sec 40dB HP8640 CAN CONTROLLER 2 250Kbit/sec CAN TRANSCELVER 2 6.8∝F 90%AM, 1KHz UST (V) 30VSS NOT NOISE RESISTANT L9615 NOISE RESISTANT 20VSS min. request boundary (automotive industry) 10VSS 1MHz 10MHz 100MHz 500MHz 1GHz D96AT249B 5/8 L9615 EMC PERFORMANCE (TRANSMITTER) 4.7nF 50Ω +5V 80dBµF TX0 equivalent terminating resistor 2 x 120Ω parallel at line ends C_H 30Ω 30Ω 4.7nF 50Ω µV VS GND C_L TEK495 Analyzer D96AT250 Transceiver Without Emc Reducing Measures 80 70 60 50 40 30 20 10 0 0 40 80 120 160 ATTENUATION OF TRANSMITTER D96AT251 Transceiver With Emc Reducing Measures 80 70 60 50 40 30 20 10 0 0 40 80 120 160 ATTENUATION OF TRANSMITTER D96AT252 10000 3162 1000 316.2 100 31.62 10 3.162 10000 3162 1000 316.2 100 31.62 10 3.162 1 f(KHz) 1 f(KHz) EMC PERFORMANCE (Transceiver Sending) TX0 50Ω +5V 5V 250KHz GND equivalent terminating resistor 2 x 120Ω parallel at line ends C_H 30Ω 30Ω 4.7nF 50Ω µV VS C_L TEK495 Analyzer D96AT253 Transceiver Without Emc Reducing Measures 80 70 60 50 40 30 20 10 0 0 40 80 120 160 D96AT254 Transceiver With Emc Reducing Measures 80 70 60 50 40 30 20 10 0 0 40 80 120 160 D96AT255 10000 3162 1000 316.2 100 31.62 10 3.162 10000 3162 1000 316.2 100 31.62 10 3.162 1 f(KHz) 1 f(KHz) 6/8 L9615 SO8 PACKAGE MECHANICAL DATA DIM. MIN. A a1 a2 a3 b b1 C c1 D E e e3 F L M S 3.8 0.4 4.8 5.8 1.27 3.81 4.0 1.27 0.6 8° (max.) 0.15 0.016 5.0 6.2 0.65 0.35 0.19 0.25 0.1 mm TYP. MAX. 1.75 0.25 1.65 0.85 0.48 0.25 0.5 45° (typ.) 0.189 0.228 0.050 0.150 0.157 0.050 0.024 0.197 0.244 0.026 0.014 0.007 0.010 0.004 MIN. inch TYP. MAX. 0.069 0.010 0.065 0.033 0.019 0.010 0.020 7/8 L9615 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGSTHOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. © 1998 SGS-THOMSON Microelectronics – Printed in Italy – All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - taly - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. 8/8