LT1796 Overvoltage Fault Protected CAN Transceiver Fea T Descrip T n Protected from Overvoltage Line Faults to 60V The LT 1796 CAN transceiver provides built-in fault toler- n ESD Protection to IEC-1000-4-2 Level 4 ance to survive in industrial and automotive environments. 15kV Air Gap Test Discrete protection devices are not needed. Bus interface 8kV Contact Mode Test pins can withstand voltage faults up to 60V with respect n ISO 11898 Compatible to ground with no damage to the device. Faults may oc- n High Input Impedance Supports Up to 256 Nodes cur while the transceiver is active, shut down or powered n Controlled Slew Rates for EMI Emissions Control off. On-chip ESD protection withstands up to 15kV air n High Impedance Outputs When Off or discharges and 8kV contact mode discharges tested per Powered Down IEC-1000-4-2. Loss of power or ground connections does n Short-Circuit Protection On All Outputs not damage the IC. n Thermal Shutdown Protection The circuit operates with data rates up to 125kbaud. A n Pin Compatible with Philips PCA82C251 slew control pin allows control of transmitted data pulse edges to control EMI and reflection problems on imper- fectly terminated lines. High output current drive allows the use of inexpensive PVC cable with impedance as low a T as 72. The 100k input impedance allows up to 256 n Industrial Control Data Networks transceivers per data network. n Automotive Systems The LT1796 is available in 8-lead PDIP and SO packages. n HVAC Controls L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Typical a T Fault Protected CAN Bus Network R R T T 120 120 125kbps CANH and CANL Driver Output 5V 5V 0.1F 0.1F CANH-CANL 2V/DIV LT1796 LT1796 CANH 7 7 2V/DIV 1 1 CANH TXD D D TXD 2V/DIV 6 6 4 4 TXD IN RXD R R RXD 5V/DIV 5 5 V V REF REF 1796 TA02 5V/DIV GND R R GND S S 1796 TA01 2 8 8 2 1796fa 1 For more information www.linear.com/LT1796 ion pplica ions pplica ion uresLT1796 a Te Maxi Mu M r a T p in c F T (Note 1) Supply Voltage (V ) ............................................... 44V CC TOP VIEW R Slope Control Input Voltage ................. 0.3V to 44V S TXD 1 8 R S D V Reference Output Pin .......................... 0.3V to 7V REF GND 2 7 CANH Driver Input Voltage .................................. 0.3V to 44V V 3 6 CANL CC R CANH, CANL Data Line Pins....................... 80V to 80V RXD 4 5 V REF Receiver Output Voltages ............................. 0.3V to 7V N8 PACKAGE S8 PACKAGE Operating Temperature Range 8-LEAD PDIP 8-LEAD PLASTIC SO T = 150C, = 130C/W (N8) LT1796C................................................... 0C to 70C JMAX JA T = 150C, = 150C/W (S8) JMAX JA LT1796I ............................................... 40C to 85C Storage Temperature Range ..................65C to 150C Lead Temperature (Soldering, 10 sec) ...................300C o r Der i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT1796CN8 PBF LT1796CN8 TRPBF LT1796 CN8 8-Lead PDIP 0C to 70C LT1796CS8 PBF LT1796CS8 TRPBF 1796 8-Lead Plastic SO 0C to 70C LT1796IN8 PBF LT1796IN8 TRPBF LT1796I IN8 8-Lead PDIP 40C to 85C LT1796IS8 PBF LT1796IS8 TRPBF 1796I 8-Lead Plastic SO 40C to 85C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on nonstandard lead based finish parts. For more information on lead free part marking, go to: