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(R)
L9616
HIGH SPEED CAN BUS TRANSCEIVER
L9616 MEETS ISO/DIS 11898 UP TO 1MEGABAUD 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 (1MEGABAUD/250KBAUD) RECEIVER - DIFFERENZIAL INPUT WITH HIGH INTERFERENCE SUPPRESSION - COMMON MODE INPUT VOLTAGE RANGE (VCOM) FROM -2V TO VS+3V ESD PROTECTION LEVEL UP TO 4kV PACKAGE: SO-8 DESCRIPTION The L9616 is a bidirectional transceiver for signal BLOCK DIAGRAM
SO-8 ORDERING NUMBER: L9616D
conditioning and processing in connection with a CAN controller. Data rates of up to 1MEGABAUD are supported using either shielded or nonshielded pair of lines.
3
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
November 2000
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L9616
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 125 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
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L9616
ELECTRICAL CHARACTERISTICS (TOP = -40 to 125C; 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 = 60 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 < 1 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 A A mA mA K K V mV s mA 25 VS 0.3 VS 2 -25 A A 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 K
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L9616
DINAMIC CHARACTERISTICS (CA = 47pF between C_H and C_L; VS = 5V; tR < 5ns; CRXO = 20pF between RXO and B; RA = 60 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/s V/s ns ns
FUNCTIONAL DESCRIPTION The L9616 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. 10s 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 (1MEGABaud) and low speed (250kBaud). The ASC pin is tied to GND for normal operation at 1MEGABaud. For slower speed operation at 250kBaud 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
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L9616
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 120 PARALLEL AT LINE ENDS 6.8F 30 CAN CONTROLLER 1 MONITORING (BIT COMPARISON) CAN TRANSCELVER 1 50
250Kbit/sec
450 30
Ust (Noise signal) 100
40dB HP8640
CAN CONTROLLER 2
250Kbit/sec
CAN TRANSCELVER 2
6.8F
90%AM, 1KHz
UST (V) 30VSS NOT NOISE RESISTANT
NOISE RESISTANT 20VSS min. request boundary (automotive industry)
10VSS
1MHz
10MHz
100MHz
500MHz
1GHz
D96AT249C
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L9616
EMC PERFORMANCE (TRANSMITTER)
4.7nF TX0 equivalent terminating resistor 2 x 120 parallel at line ends C_H 30 4.7nF 50
50 +5V
80dBF
VS GND
C_L
30
V
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 50 +5V 5V 250KHz GND equivalent terminating resistor 2 x 120 parallel at line ends C_H 30 4.7nF 50
VS
C_L
30
V
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)
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L9616
mm MIN. A a1 a2 a3 b b1 C c1 D (1) E e e3 F (1) 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 0.65 0.35 0.19 0.25 0.1 TYP. MAX. 1.75 0.25 1.65 0.85 0.48 0.25 0.5 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
DIM.
OUTLINE AND MECHANICAL DATA
45 (typ.) 5.0 6.2 0.189 0.228 0.050 0.150 0.157 0.050 0.024 0.197 0.244
SO8
(1) D and F do not include mold flash or protrusions. Mold flash or potrusions shall not exceed 0.15mm (.006inch).
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L9616
Information furnished is believed to be accurate and reliable. However, STMicroelectronics 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 STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics (c) 2000 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com
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