L9638D013TR STMicroelectronics

L9638 LIN BUS TRANSCEIVER 1 FEATURES Single-wire transceiver for LIN-protocol Transmission rate up to 20 kbaud SO-8 Operating power supply voltage range 6V Vs 26V (40V for transients) Table 1. Order Codes Low quiescent current in sleep mode (typ.10A) Part Number Package Wake-up through LIN-bus, Enable input (from C CMOS compatible) or Wake-up input (edge L9638D SO-8 driven) L9638D013TR Tape & Reel Wide input and output range -24V V Vs LIN Integrated pull/down/up resistors for LIN, TxD, 2 DESCRIPTION RxD, EN, INH The L9638 is a monolithic integrated circuit for Inhibit output with low resistance (<40 ) versus LIN-bus interface function between the protocol Vs and short circuit protection handler in the controller and the physical bus in CMOS compatible TxD, RxD Interface automotive applications. EMI robustness optimised As well as it can be used in standard ISO 9141 systems. Thermal shutdown and LIN short circuit protection Figure 1. Block Diagram VSVSVS VSVS DD InInInttteeernrnrnaaalll InInInt.t.t.555VVV VoVoVollltttaaagggeee ReReReggguuulllaaatototorrr RxRxRxDDD LILILINNN GGGlitlitlitccchhh FiFiFilllttteeerrr TxTxTxDDD VSVS DD ENENEN ConConttrrooll INININHHH LLogiogicc PPrrototeecctitionon WUWUWUPPP GGlitlitcchh GNGNGNDDD FFiltilteerr Rev. 4 October 2004 1/14 Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s) L9638 Table 2. Pin Description Pin No. Pin Name Function 1 RxD Receive data Output 2 EN Enable Input Digital control signal for low power modes 3 WUP Wake-Up Input Local wake-up from sleep mode sensitive to positive and negative edges 4 TxD Transmit data Input 5 GND Ground 6 LIN Bidirectional I/O 7 Vs Supply voltage 8 INH Inhibit Output, battery related high side switch for controlling external Voltage Regulator Figure 2. Pin Connection RxD 1 8 INH EN 2 7 Vs WUP 3 6 LIN TxD 4 5 GND D04AT514 Table 3. Absolute Maximum Ratings Symbol Parameter Value Unit V Supply Voltage -0.3 to 40 V S V Pin Voltage -24 to 40 V LIM V W Pin Voltage -0.3 to 40 V INH , UP V T , EN Pin Voltage -0.3 to 6 V RxD , xD V HBM: all pins withstand 2KV pin 6 (LIN) is able to withstand ESD 8kV versus GND and +8/-5kV versus V S Table 4. Thermal Data Symbol Parameter Value Unit T Operating junction temperature -40 to150 C J OP R Thermal steady state junction to ambient resistance 145 K/W th j-amb T Thermal shutdown temperature 170 20 C J SD T Storage temperature -55 to 150 C stg 2/14 Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s)