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| TH8080 Single LIN Bus Transceiver Features and Benefits Single wire LIN transceiver Compatible to LIN Protocol Specification, Rev. 1.1 Compatible to ISO9141 functions Up to 20 kbps bus speed Low RFI due to slew rate control Fully integrated receiver filter Protection against load dump, jump start Bus terminals proof against short-circuits and transients in the automotive environment Very low (30 A) typical power consumption in recessive state and therefore no sleep mode necessary Thermal overload and short circuit protection High impendance Bus pin in case of loss of ground and undervoltage condition 8-pin SOIC 4kV ESD protection on Bus pin RxD N.C. VCC TxD 1 2 8 7 N.C. VS BUS GND Pin Diagram SOIC8NB TH8080 3 4 6 5 Ordering Information Part No. TH8080 JDC Temperature Range -40C...125C Package SOIC8, 150mil General Description The TH8080 is a physical layer device for a single wire data link capable of operating in applications where high data rate is not required and a lower data rate can achieve cost reductions in both the physical media components and in the microprocessor which use the network. The TH8080 is designed in accordance to the physical layer definition of the LIN Protocol Specification , Rev. 1.1 . The IC furthermore can be used in ISO9141 systems. Because of the very low current consumption of the TH8080 in the recessive state it's particularly suitable for ECU applications with hard standby current requirements , whereby no sleep/wake up control due to the microprocessor is necessary. Target Data Sheet Rev 1.0 November 2000 Page 1 www.melexis.com TH8080 Single LIN Transceiver Functional Diagram VS internal Supply & References Biasing & Bandgap Thermal Protection VCC POR SLEW RATE TxD BUS Driver BUS GND RxD Receive Comparator Input Filter Figure 1 - Block Diagram Target Data Sheet Rev 1.0 Nov. 2000 Page 2 www.melexis.com TH8080 Single LIN Transceiver Application Circuit Car Battery VBAT 1N4001 2.2uF LIN BUS Voltage regulator 100nF VBAT MASTER ECU +5V 100nF optional 10 100nF 100nF 100p VCC RxD BUS VS 33H ECU connector to Single Wire LIN Bus 2.2uF 100nF P TH8080 TxD GND GND 1N4001 VBAT Voltage regulator SLAVE ECU VBAT +5V optional 10 100nF 100nF 100p 100nF VCC RxD VS 33H BUS TxD 82pF GND GND Figure 2 - Application Circuit Target Data Sheet Rev 1.0 Nov. 2000 Page 3 ECU connector to Single Wire LIN Bus P TH8080 www.melexis.com TH8080 Single LIN Transceiver Electrical Specification All voltages are referenced to ground (GND). Positive currents flow into the IC. The absolute maximum ratings given in the table below are limiting values that do not lead to a permanent damage of the device but exceeding any of these limits may do so. Long term exposure to limiting values may affect the reliability of the device. Reliable operation of the TH8080 is only specified within the limits shown in "Operating conditions". Operating Conditions Parameter Battery voltage Supply voltage Operating ambient temperature Junction temperature [1] Symbol VS VCC TA TJc Min 6 4.5 -40 Max 20 5.5 +125 +150 Unit V V C C Absolute Maximum Ratings Parameter Batterry Supply Voltage Supply Voltage Short-term supply voltage Transient supply voltage Transient supply voltage Transient supply voltage BUS voltage Transient bus voltage Transient bus voltage Transient bus voltage DC voltage on pins TxD, RxD ESD capability of pin BUS ESD capability of any other pins Maximum latch - up free current at any Pin Maximum power dissipation Thermal impedance Storage temperature Junction temperature Symbol Conditions VS VCC VS.ld VS.tr1 VS.tr2 VS.tr3 VBUS VBUS.tr1 VBUS.tr2 VBUS.tr3 VDC ESDBUSHB ESDHB ILATCH Ptot JA Tstg Tvj At Tamb = +125 C in free air -55 -40 Human body model, equivalent to discharge 100pF with 1.5k Human body model, equivalent to discharge 100pF with 1.5k ISO 7637/1 pulse 1 [2] ISO 7637/1 pulses 2 [2] ISO 7637/1 pulses 3A, 3B [2] -150 -0.3 -4 -2 -500 Load dump; t<500ms ISO 7637/1 pulse 1[1] ISO 7637/1 pulses 2[1] ISO 7637/1 pulses 3A, 3B -150 -40 -150 +100 +150 +7 +4 +2 +500 197 152 +150 +150 -150 +100 +150 +40 Min. -0.3 -0.3 Max. +27 +7 +40 Unit V V V V V V V V V V V kV kV mA mW K/W C C ______________________________ [1] [2] ISO 7637 test pulses are applied to VS via a reverse polarity diode and >1uF blocking capacitor . ISO 7637 test pulses are applied to BUS via a coupling capacitance of 1 nF. Target Data Sheet Rev 1.0 Nov. 2000 Page 4 www.melexis.com TH8080 Single LIN Transceiver Static Characteristics (VS = 6 to 20V, VCC= 4.5 to 5.5V, TA = -40 to +125C, unless otherwise specified) All voltages are referenced to ground (GND), positive currents are flow into the IC. Parameter PIN VS,VCC Supply current, dominant Supply current, dominant Supply current, recessive Supply current, recessive PIN BUS / TRANSMITTER Bus output voltage, dominant Bus output voltage, recessive Bus short circuit current Bus input current, recessive Bus reverse polarity current, reBus pull up resistor PIN BUS / RECEIVER Bus input threshold, recessive to dominant Bus input threshold, dominant to recessive Bus input hysteresis PIN TXD High level input voltage Low level input voltage TxD pull up current, high level TxD pull up current, low level PIN RXD Low level output voltage High level output voltage Thermal protection Thermal shutdown Hysteresis Tsd [1] Thys [1] Symbol Conditions Min Typ Max Unit ISd ICCd ISr ICCr VS = 16V,VCC = 5.5V TxD=L VS = 16V,VCC = 5.5V TxD=L VS = 16V,VCC = 5.5V TxD open VS = 16V,VCC = 5.5V TxD open tbd tbd 8 20 50 1 20 30 A mA A A Vol_BUS Voh_BUS IBUS_SHORT IBUS_leakp IBUS_leakn RBUS_pu TxD=L , IBUS = 40mA VS = 8...18V, TxD open TxD=L , VBUS > 2.5V TxD open ,VBUS = 18V TxD open ,VBUS = -18V 0.8* VS 40 -20 -1 20 30 1.2 V V 130 20 1 47 mA A mA k VihBUS_rd VihBUS_rd VBUS_hys TxD open , -18V 0.45* VS 0.55* VS 0.6*VS V V mV 20 Vih Vil IIH_TXD IIH_TXD Rising edge Falling edge VTxD = 4V VTxD = 1V 0.3* VCC -125 -500 -50 -250 0.7* VCC V V -25 -100 A A Vol_rxd Voh_rxd IRxD = 1.25mA IRxD = -250A VCC -0.9 0.9 V V 150 5 180 25 C C ______________________________ [1] Thresholds not tested in production, guaranteed by design, only switch on/off tested . Target Data Sheet Rev 1.0 Nov. 2000 Page 5 www.melexis.com TH8080 Single LIN Transceiver Dynamic Characteristics All dynamic values of the table below refer to the test-schematic schown in Figure - Timing Diagram (6V VS 20V, -40C TA 125C, unless otherwise specified) Parameter Symbol Conditions 80% < VBUS < 20% , minimum & maximum bus load 20% < VBUS < 80% , minimum bus load [1] TxD high to low transition[2] TxD low to high transition[2] Min Typ Max Unit Slew rate falling edge tSRF -2.5 -1.7 -1 V/s Slew rate rising edge Propagation delay transmitter ( TxD->BUS) Propagation delay transmitter ( TxD->BUS) Propagation delay transmitter symmetry Propagation delay receiver ( BUS->RxD) Propagation delay receiver ( BUS->RxD) Propagation delay receiver symmetry Receiver debounce time tSRR 1 1.7 2.5 V/s ttrans_pdf 4 s ttrans_pdr 4 s ttrans_sym Calculate ttrans_pdf - ttrans_pdr BUS recessive to dominant [2] BUS dominant to recessive[2] -2 2 s trec_pdf 6 s trec_pdr 6 s trec_sym trec_deb Calculate ttrans_pdf - ttrans_pdr BUS rising & falling edge[3] -2 1.2 2 3.1 s s ______________________________ [1] [2] [3] Minimum slew rate of the rising edge is determined by the network time constant See timing diagram figure 3 See timing diagram figure 4 Target Data Sheet Rev 1.0 Nov. 2000 Page 6 www.melexis.com TH8080 Single LIN Transceiver Timing Diagrams VTxD 50% t tTrans_pdf tTrans_pdr VBUS 60% 40% t tRec_pdf tRec_pdr VRxD 50% t Figure 3 - Input/Output Timing t < trec_deb t < trec_deb VBUS 60% 40% t VRxD 50% t Figure 4 - Receiver Debouncing Filter Target Data Sheet Rev 1.0 Nov. 2000 Page 7 www.melexis.com TH8080 Single LIN Transceiver Test Circuit for Dynamic Characteristics 100n 900 VSUP VCC 100n BUS TxD Cload[1] GND RxD 20p TH8080 [1] Cmin = 500pF / Cmax =10nF Figure 5 - Test Circuit for Dynamic Characteristics 100n 900 VSUP VCC 100n BUS 1nF GND TxD RxD Oszi TH8080 Schaffnergenerator Pulse 3a,3b 12V Pulse 1,2,4 Figure 6 - Test Circuit for Automotive Transients Target Data Sheet Rev 1.0 Nov. 2000 Page 8 www.melexis.com TH8080 Single LIN Transceiver Pin Description RxD EN VCC TxD 1 2 8 7 INH VS BUS GND TH8082 3 4 6 5 Pin 1 2 3 4 5 6 7 8 RXD N.C. VCC TXD GND BUS VS N.C. Name I/O O Function Receive data from BUS to core, LOW in dominant state 5V supply input I Transmit data from core to BUS, LOW in dominant state Ground I/O Single wire bus pin, LOW in dominant state Battery input voltage Target Data Sheet Rev 1.0 Nov. 2000 Page 9 www.melexis.com TH8080 Single LIN Transceiver Mechanical Specifications SOIC8 Package Dimensions Small Outline Integrated Circiut (SOIC), All Dimension in mm, coplanarity < 0.1 mm SOIC 8, 150 mil D min max 4.8 5.0 E 3.80 4.00 H 10.00 10.65 A 5.80 6.20 A1 0.10 0.25 e 1.27 b 0.33 0.51 L 0.40 1.27 0 8 All Dimension in inch, coplanarity < 0.004" min max 0.189 0.197 0.150 0.157 0.228 0.244 0.053 0.069 0.004 0.010 0.050 0.013 0.020 0.016 0.050 0 8 Target Data Sheet Rev 1.0 Nov. 2000 Page 10 www.melexis.com TH8080 Single LIN Transceiver Target Data Sheet Rev 1.0 Nov. 2000 Page 11 www.melexis.com TH8080 Single LIN Transceiver For the latest version of this document, go to our website at: www.melexis.com Or for additional information contact Melexis direct: Europe Phone: E-mail: +32 13 67 04 95 sales_europe@melexis.com All other locations Phone: E-mail: +1 603 223 2362 sales_usa@melexis.com Important Notice Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. Melexis makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. Melexis reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with Melexis for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or lifesustaining equipment are specifically not recommended without additional processing by Melexis for each application. The information furnished by Melexis is believed to be correct and accurate. However, Melexis shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interrupt of business or indirect, special incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of Melexis' rendering of technical or other services. (c) 2000 Melexis GmbH. All rights reserved. Target Data Sheet Rev 1.0 Nov. 2000 Page 12 www.melexis.com |
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