AMIS-42673 High-Speed 3.3 V Digital Interface CAN Transceiver Description • • • • • • • PIN ASSIGNMENT TxD 1 8 V33 GND 2 7 CANH VCC 3 6 CANL RxD 4 5 VREF PC20071003.1 (Top View) Features • • • • • • http://onsemi.com AMIS− 42673 The AMIS−42673 CAN transceiver is the interface between a controller area network (CAN) protocol controller and the physical bus. It may be used in both 12V and 24 V systems. The digital interface level is powered from a 3.3 V supply providing true I/O voltage levels for 3.3 V CAN controllers. The transceiver provides differential transmit capability to the bus and differential receive capability to the CAN controller. Due to the wide common−mode voltage range of the receiver inputs, the AMIS−42673 is able to reach outstanding levels of electromagnetic susceptibility (EMS). Similarly, extremely low electromagnetic emission (EME) is achieved by the excellent matching of the output signals. The AMIS−42673 is primarily intended for applications where long network lengths are mandatory. Examples are elevators, in−building networks, process control and trains. To cope with the long bus delay the communication speed needs to be low. AMIS−42673 allows low transmit data rates down to 10 kbit/s or lower. True 3.3 V or 5.0 V Logic Level Interface Fully Compatible with the “ISO 11898−2” Standard Wide Range of Bus Communication Speed (0 up to 1 Mbit/s) Allows Low Transmit Data Rate in Networks Exceeding 1 km Ideally Suited for 12 V and 24 V Applications Low Electromagnetic Emission (EME); Common−Mode−Choke is No Longer Required Differential Receiver with Wide Common−Mode Range ($35 V) for High Electromagnetic Susceptibility (EMS) No Disturbance of the Bus Lines with an Unpowered Node Thermal Protection Bus Pins Protected Against Transients Short Circuit Proof to Supply Voltage and Ground ESD Protection for CAN Bus at $8 kV These are Pb−Free Devices* ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 10 of this data sheet. *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. © Semiconductor Components Industries, LLC, 2009 January, 2009 − Rev. 3 1 Publication Order Number: AMIS−42673/D AMIS−42673 Table 1. TECHNICAL CHARACTERISTICS Max Max Unit VCANH Symbol DC Voltage at Pin CANH Parameter 0 < VCC < 5.25 V; No Time Limit Condition −45 +45 V VCANL DC Voltage at Pin CANL 0 < VCC < 5.25 V; No Time Limit −45 +45 V Vo(dif)(bus_dom) Differential Bus Output Voltage in Dominant State 42.5 W < RLT < 60 W 1.5 3 V tpd(rec−dom) Propagation Delay TxD to RxD 100 230 ns tpd(dom−rec) Propagation Delay TxD to RxD 100 245 ns CM−range Input Common−Mode Range for Comparator −35 +35 V VCM−peak Common−Mode Peak Figures 7 and 8 (Note 1) −500 500 mV VCM−step Common−Mode Step Figures 7 and 8 (Note 1) −150 150 mV Guaranteed Differential Receiver Threshold and Leakage Current 1. The parameters VCM−peak and VCM−step guarantee low EME. VCC AMIS−42673 VCC TxD 3 Thermal shutdown 1 ’S’ V33 RxD 7 Driver control 6 8 4 COMP Ri(cm) + VREF 5 Vcc/2 Ri(cm) 2 GND PC20071003.2 Figure 1. Block Diagram Table 2. PIN DESCRIPTION Pin Name Description 1 TxD Transmit Data Input; Low Input → Dominant Driver; Internal Pullup Current 2 GND Ground 3 VCC Supply Voltage 4 RxD Receive Data Output; Dominant Transmitter → Low Output 5 VREF Reference Voltage Output 6 CANL LOW−Level CAN Bus Line (Low in Dominant Mode) 7 CANH HIGH−Level CAN Bus Line (High in Dominant Mode) 8 V33 3.3 V Supply for Digital I/O http://onsemi.com 2 CANH CANL AMIS−42673 Table 3. ABSOLUTE MAXIMUM RATINGS Min Max Unit VCC Symbol Supply Voltage −0.3 +7 V V33 I/O Interface Voltage −0.3 +7 V VCANH DC Voltage at Pin CANH 0 < VCC < 5.25 V; No Time Limit −45 +45 V VCANL DC Voltage at Pin CANL 0 < VCC < 5.25 V; No Time Limit −45 +45 V VTxD DC Voltage at Pin TxD −0.3 VCC + 0.3 V VRxD DC Voltage at Pin RxD −0.3 VCC + 0.3 V VREF DC Voltage at Pin VREF −0.3 VCC + 0.3 V Vtran(CANH) Transient Voltage at Pin CANH Note 2 −150 +150 V Vtran(CANL) Transient Voltage at Pin CANL Note 2 −150 +150 V Vtran(VREF) Transient Voltage at Pin VREF Note 2 −150 +150 V Vesd(CANL/ Electrostatic Discharge Voltage at CANH and CANL Pin Note 4 Note 6 −8 −500 +8 +500 kV V Vesd Electrostatic Discharge Voltage at All Other Pins Note 4 Note 6 −4 −250 +4 +250 kV V Latch−up Static Latch−up at All Pins Note 5 100 mA Tstg Storage Temperature −55 +155 °C TA Ambient Temperature −40 +125 °C TJ Maximum Junction Temperature −40 +150 °C CANH) Parameter Conditions Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 2. Applied transient waveforms in accordance with “ISO 7637 part 3”, test pulses 1, 2, 3a, and 3b (see Figure 4). 3. Standardized human body model system ESD pulses in accordance to IEC 1000.4.2. 4. Standardized human body model ESD pulses in accordance to MIL883 method 3015. Supply pin 8 is ±4kV. 5. Static latch−up immunity: static latch−up protection level when tested according to EIA/JESD78. 6. Standardized charged device model ESD pulses when tested according to EOS/ESD DS5.3−1993. Table 4. THERMAL CHARACTERISTICS Symbol Parameter Conditions Value Unit Rth(vj−a) Thermal Resistance from Junction−to−Ambient in SO−8 Package In Free Air 145 k/W Rth(vj−s) Thermal Resistance from Junction−to−Substrate of Bare Die In Free Air 45 k/W http://onsemi.com 3 AMIS−42673 APPLICATION INFORMATION VBAT IN 5V−reg 60 W OUT 60 W 47 nF IN 3.3V− reg OUT VCC V33 8 RxD VCC 3 4 CAN controller TxD 7 AMIS− 42673 5 6 1 GND Figure 2. Application Diagram http://onsemi.com 4 CANH VREF CANL 60 W 2 PC20071003.3 CAN BUS GND 60 W 47 nF AMIS−42673 FUNCTIONAL DESCRIPTION General Operating Modes The AMIS−42673 is the interface between the CAN protocol controller and the physical bus. It is intended for use in industrial and automotive applications requiring baud rates up to 1 Mbit/s. It provides differential transmit capability to the bus and differential receiver capability to the CAN protocol controller. It is fully compatible to the “ISO 11898−2” standard. AMIS−42673 only operates in high−speed mode as illustrated in Table 5. The transceiver is able to communicate via the bus lines. The signals are transmitted and received to the CAN controller via the pins TxD and RxD. The slopes on the bus lines outputs are optimized to give extremely low EME. Table 5. FUNCTIONAL TABLE OF AMIS−42673; x = don’t care VCC Pin TxD Pin CANH Pin CANL Bus State Pin RxD 4.75 to 5.25 V 0 High Low Dominant 0 4.75 to 5.25 V 1 (or floating) VCC/2 VCC/2 Recessive 1 x 0 V < CANH < VCC 0 V < CANL < VCC Recessive 1 >2V 0 V < CANH < VCC 0 V < CANL < VCC Recessive 1 VCC < PORL (Unpowered) PORL < VCC < 4.75 V Overtemperature Detection The pins CANH and CANL are protected from automotive electrical transients (according to “ISO 7637”; see Figure 3). Should TxD become disconnected, this pin is pulled high internally. When the VCC supply is removed, Pins TxD and RxD will be floating. This prevents the AMIS−42673 from being supplied by the CAN controller through the I/O Pins. A thermal protection circuit protects the IC from damage by switching off the transmitter if the junction temperature exceeds a value of approximately 160°C. Because the transmitter dissipates most of the power, the power dissipation and temperature of the IC is reduced. All other IC functions continue to operate. The transmitter off−state resets when Pin TxD goes HIGH. The thermal protection circuit is particularly needed when a bus line short circuits. 3.3 V Interface High Communication Speed Range AMIS−42673 may be used to interface with 3.3 V or 5 V controllers by use of the V33 pin. This pin may be supplied with 3.3 V or 5 V to have the corresponding digital interface voltage levels. When the V33 pin is supplied at 2.5 V, even interfacing with 2.5 V CAN controllers is possible. See also Digital Output Characteristics @ V33 = 2.5 V, Table . In this case a pull−up resistor from TxD to V33 is necessary. The transceiver is primarily intended for industrial applications. It allows very low baud rates needed for long bus length applications. But also high speed communication is possible up to 1 Mbit/s. Fail−Safe Features A current−limiting circuit protects the transmitter output stage from damage caused by accidental short−circuit to either positive or negative supply voltage − although power dissipation increases during this fault condition. http://onsemi.com 5 AMIS−42673 Definitions All voltages are referenced to GND (Pin 2). Positive currents flow into the IC. Sinking current means that the current is flowing into the pin. Sourcing current means that the current is flowing out of the pin. Table 6. DC CHARACTERISTICS VCC = 4.75 V to 5.25 V, V33 = 2.9 V to 3.6 V; TJ = −40°C to +150°C; RLT = 60 W unless specified otherwise. Parameter Symbol Conditions Min Typ Max Unit 45 4 65 8 mA SUPPLY (Pin VCC and pin V33) ICC Supply Current Dominant; VTXD = 0 V Recessive; VTXD = VCC I33 I/O Interface Current V33 = 3.3 V; CL = 20 pF; recessive 1 mA I33 I/O Interface Current (Note 7) V33 = 3.3 V; CL = 20pF; 1 Mbps 170 mA V TRANSMITTER DATA INPUT (Pin TxD) VIH HIGH−Level Input Voltage Output recessive 2.0 − VCC VIL LOW−Level Input Voltage Output dominant −0.3 − +0.8 V IIH HIGH−Level Input Current VTxD = V33 −1 0 +1 mA IIL LOW−Level Input Current VTxD = 0 V −50 −200 −300 mA Ci Input Capacitance (Note 7) − 5 10 pF 0.7 x V33 0.75 x V33 RECEIVER DATA OUTPUT (Pin RxD) VOH HIGH−Level Output Voltage IRXD = − 10 mA VOL LOW−Level Output Voltage IRXD = 5 mA Ioh HIGH−Level Output Current (Note 7) VRxD = 0.7 x V33 Iol LOW−Level Output Current (Note 7) VRxD = 0.45 V V 0.18 0.35 V −10 −15 −20 mA 5 10 15 mA REFERENCE VOLTAGE OUTPUT (Pin VREF) VREF Reference Output Voltage −50 mA < IVREF < +50 mA 0.45 x VCC 0.50 x VCC 0.55 x VCC V VREF_CM Reference Output Voltage for Full Common−Mode Range −35 V < VCANH < +35 V; −35 V < VCANL < +35 V 0.40 x VCC 0.50 x VCC 0.60 x VCC V BUS LINES (Pins CANH and CANL) Vo(reces)(CANH) Recessive Bus Voltage at Pin CANH VTxD = VCC; no load 2.0 2.5 3.0 V Vo(reces)(CANL) Recessive Bus Voltage at Pin CANL VTxD = VCC; no load 2.0 2.5 3.0 V Io(reces)(CANH) Recessive Output Current at Pin CANH −35 V < VCANH < +35 V; 0 V < VCC < 5.25 V −2.5 − +2.5 mA Io(reces)(CANL) Recessive Output Current at Pin CANL −35 V < VCANL < +35 V; 0 V < VCC < 5.25 V −2.5 − +2.5 mA Vo(dom)(CANH) Dominant Output Voltage at Pin CANH VTxD = 0 V 3.0 3.6 4.25 V Vo(dom)(CANL) Dominant Output Voltage at Pin CANL VTxD = 0 V 0. 5 1.4 1.75 V Vo(dif)(bus) Differential Bus Output Voltage (VCANH − VCANL) VTxD = 0 V; Dominant; 42.5 W < RLT < 60 W 1.5 2.25 3.0 V VTxD = VCC; Recessive; No Load −120 0 +50 mV Io(sc) (CANH) Short Circuit Output Current at Pin CANH VCANH = 0 V; VTxD = 0 V −45 −70 −95 mA Io(sc) (CANL) Short Circuit Output Current at Pin CANL VCANL = 36 V; VTxD = 0 V 45 70 120 mA Vi(dif)(th) Differential Receiver Threshold Voltage 0.5 0.7 0.9 V −5 V < VCANL < +12 V; −5 V < VCANH < +12 V; See Figure 4 7. Not tested at ATE http://onsemi.com 6 AMIS−42673 Table 6. DC CHARACTERISTICS VCC = 4.75 V to 5.25 V, V33 = 2.9 V to 3.6 V; TJ = −40°C to +150°C; RLT = 60 W unless specified otherwise. Symbol Parameter Conditions Min Typ Max Unit BUS LINES (Pins CANH and CANL) Vihcm(dif)(th) Differential Receiver Threshold Voltage for High Common−Mode −35 V < VCANL < +35 V; −35 V < VCANH < +35 V; See Figure 4 0.25 0.7 1.05 V Vi(dif)(hys) Differential Receiver Input Voltage Hysteresis −35 V < VCANL < +35 V; −35 V < VCANH < +35 V; See Figure 4 50 70 100 mV Ri(cm)(CANH) Common−Mode Input Resistance at Pin CANH 15 25 37 kW Ri(cm) (CANL) Common−Mode Input Resistance at Pin CANL 15 25 37 kW Ri(cm)(m) Matching Between Pin CANH and Pin CANL Common−Mode Input Resistance −3 0 +3 % Ri(dif) Differential Input Resistance 25 50 75 kW 7.5 20 pF VCANH = VCANL BUS LINES (Pins CANH and CANL) Ci(CANH) Input Capacitance at Pin CANH VTxD = VCC; Not Tested Ci(CANL) Input Capacitance at Pin CANL VTxD = VCC; Not Tested 7.5 20 pF Ci(dif) Differential Input Capacitance VTxD = VCC; Not Tested 3.75 10 pF ILI(CANH) Input Leakage Current at Pin CANH VCC = 0 V; VCANH = 5 V 10 170 250 mA ILI(CANL) Input Leakage Current at Pin CANL VCC = 0 V; VCANL = 5 V 10 170 250 mA VCM−peak Common−Mode Peak During Transition from Dom → Rec or Rec → Dom Figures 7 and 8 −500 500 mV VCM−step Difference in Common−Mode Between Dominant and Recessive State Figures 7 and 8 −150 150 mV POWER−ON−RESET PORL CANH, CANL, Vref in Tri−State Below POR Level POR Level 2.2 3.5 4.7 V 150 160 180 °C THERMAL SHUTDOWN TJ(sd) Shutdown Junction Temperature TIMING CHARACTERISTICS (See Figures 6 and 7) td(TxD−BUSon) Delay TxD to Bus Active 40 85 110 ns td(TxD−BUSoff) Delay TxD to Bus Inactive 30 60 110 ns td(BUSon−RxD) Delay Bus Active to RxD 25 55 110 ns td(BUSoff−RxD) Delay Bus Inactive to RxD 65 100 135 ns tpd(rec−dom) Propagation Delay TxD to RxD from Recessive to Dominant 100 230 ns td(dom−rec) Propagation Delay TxD to RxD from Dominant to Recessive 100 245 ns 7. Not tested at ATE Table 7. DIGITAL OUTPUT CHARACTERISTICS @ V33 = 2.5 V VCC = 4.75 to 5.25 V; V33 = 2.5 V $5%; TJ = −40 to +150°C; RLT = 60 W unless specified otherwise. Symbol Parameter Conditions Min Typ Max Unit RECEIVER DATA OUTPUT (Pin RxD) Ioh HIGH−Level Output Current VOH > 0.9 x V33 Iol LOW−Level Output Current VOL < 0.1 x V33 http://onsemi.com 7 −2.6 mA 4 mA AMIS−42673 MEASUREMENT SETUPS AND DEFINITIONS +3.3 V 100 nF +5 V VCC 100 nF V33 3 TxD 8 1 nF 1 AMIS− 42673 RxD CANH 7 4 5 Transient Generator 1 nF 6 CANL 2 20 pF VREF PC20071003.4 GND Figure 3. Test Circuit for Automotive Transients VRxD High Low Hysteresis 0.9 0.5 PC20040829.7 Vi(dif)(hys) Figure 4. Hysteresis of the Receiver +3.3 V 100 nF +5 V 100 nF VCC V33 3 TxD 8 1 AMIS− 42673 RxD CANH 7 4 5 RLT VREF 60 W 6 2 20 pF GND CLT 100 pF CANL PC20071003.5 Figure 5. Test Circuit for Timing Characteristics http://onsemi.com 8 AMIS−42673 HIGH LOW TxD CANH CANL dominant Vi(dif) = VCANH − VCANL 0.9V 0.5V recessive RxD 0.7 x V33 0.3 x V33 td(TxD−BUSon) td(TxD−BUSoff) td(BUSon−RxD) tpd(rec−dom) td(BUSoff−RxD) tpd(dom−rec) PC20040829.6 Figure 6. Timing Diagram for AC Characteristics +3.3 V 100 nF +5 V VCC V33 3 TxD 8 7 10 nF 1 AMIS− 6 42673 Generator RxD 6.2 kW CANH 4 5 2 20 pF Active Probe CANL 6.2 kW 30 W VREF Spectrum Anayzer 30 W 47 nF GND PC20071003.6 Figure 7. Basic Test Setup for Electromagnetic Measurement CANH CANL recessive VCM−step VCM = 0.5*(VCANH+VCANL) VCM−peak VCM−peak PC20040829.7 Figure 8. Common−Mode Voltage Peaks (See Measurement Setup Figure 7) http://onsemi.com 9 AMIS−42673 DEVICE ORDERING INFORMATION Temperature Range Package Type Shipping† AMIS42673ICAG1G −40°C − 125°C SOIC−8 (Pb−Free) 96 Tube / Tray AMIS42673ICAG1RG −40°C − 125°C SOIC−8 (Pb−Free) 3000 / Tape & Reel Part Number †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. http://onsemi.com 10 AMIS−42673 PACKAGE DIMENSIONS SOIC 8 CASE 751AZ−01 ISSUE O ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada Email: [email protected] N. American Technical Support: 800−282−9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81−3−5773−3850 http://onsemi.com 11 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative AMIS−42673/D