NCV7349D10R2G

NCV7349 High Speed Low Power CAN Transceiver Description The NCV7349 CAN transceiver is the interface between a controller area network (CAN) protocol controller and the physical bus. The transceiver provides differential transmit capability to the bus and differential receive capability to the CAN controller. The NCV7349 is a new addition to the CAN high−speed transceiver family complementing NCV734x CAN family and previous generations of CAN transceivers such as AMIS42665, AMIS3066x, etc. Due to the wide common−mode voltage range of the receiver inputs and other design features, the NCV7349 is able to reach outstanding levels of electromagnetic susceptibility (EMS). Similarly, very low electromagnetic emission (EME) is achieved by the excellent matching of the output signals. www.onsemi.com MARKING DIAGRAM 8 8 SOIC−8 CASE 751AZ Features • • (Note: Microdot may be in either location) PIN ASSIGNMENT 8 1 TxD STB 2 GND 3 VCC NV7349−0 ALYWG G • • • • • • • • • 1 NV7349−x = Specific Device Code x = 0 or 3 A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Package • Compatible with the ISO 11898−5 Standard • High Speed (up to 1 Mbps) • VIO Pin on NCV7349−3 Version Allowing Direct Interfacing with 3 V to 5 V Microcontrollers Very Low Current Standby Mode with Wake−up via the Bus Low Electromagnetic Emission (EME) and Extremely High Electromagnetic Immunity Very Low EME without Common−mode (CM) Choke No Disturbance of the Bus Lines with an Un−powered Node Transmit Data (TxD) Dominant Time−out Function Under All Supply Conditions the Chip Behaves Predictably Very High ESD Robustness of Bus Pins, >10 kV System ESD Pulses Thermal Protection Bus Pins Short Circuit Proof to Supply Voltage and Ground Bus Pins Protected Against Transients in an Automotive These are Pb−Free Devices NV7349−x ALYW G G 1 7 CANH 6 CANL 5 4 NC RxD NCV7349D10R2G (Top View) Quality • NCV Prefix for Automotive and Other Applications Requiring 1 8 2 7 TxD STB GND Typical Applications 3 • Automotive • Industrial Networks VCC NV7349−3 ALYWG G Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable CANH 6 CANL 5 4 VIO RxD NCV7349D13R2G (Top View) ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 10 of this data sheet. © Semiconductor Components Industries, LLC, 2014 December, 2014 − Rev. 1 1 Publication Order Number: NCV7349/D NCV7349 Table 1. KEY TECHNICAL CHARACTERISTICS AND OPERATING RANGES Symbol Parameter Conditions VCC Power supply voltage (Note 1) VUV Undervoltage detection voltage on pin Vcc Min Max Unit 4.75 (4.5) 5.25 (5.5) V 2 4 V VCANH DC voltage at pin CANH 0 < VCC < 5.5 V; no time limit −50 +50 V VCANL DC voltage at pin CANL 0 < VCC < 5.5 V; no time limit −50 +50 V DC voltage at pin CANH and CANL during load dump condition 0 < VCC < 5.5 V, less than one second − +58 V Electrostatic discharge voltage IEC 61000−4−2 at pins CANH and CANL −15 15 kV Differential bus output voltage in dominant state 45 W < RLT < 65 W 1.5 3 V Input common−mode range for comparator Guaranteed differential receiver threshold and leakage current −35 +35 V − 15 pF − 245 ns − 250 ns −40 150 °C VCANH,Lmax VESD VO(dif)(bus_dom) CM−range Cload Load capacitance on IC outputs tpd0 Propagation delay (NCV7349−0 version) See Figure 7 tpd3 Propagation delay (NCV7349−3 version) See Figure 7 TJ Junction temperature Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability. 1. In the range of 4.5 V to 4.75 V and from 5.25 V to 5.5 V the chip is fully functional; some parameters may be outside of the specification. BLOCK DIAGRAM VCC VIO (*) 3 5 VIO NCV7349 7 Thermal shutdown TxD CANH 1 Timer VIO STB RxD GND 8 4 Mode & Wake−up control 6 Driver control Wake−up Filter COMP 2 COMP *On NCV7349−0 version pin 5 is not connected. VIO supply is provided by VCC. Figure 1. Block Diagram www.onsemi.com 2 CANL NCV7349 TYPICAL APPLICATION VBAT IN 5 V − reg OUT VCC VCC NC 5 STB TxD 1 RxD 7 NCV7349−0 Micro− controller 8 3 RLT = 60 W CANH CAN BUS 4 6 CANL RLT = 60 W 2 GND GND Figure 2. Application Diagram, NCV7349−0 VBAT IN IN 5 V − reg OUT OUT 3 V − reg VIO VCC 5 STB TxD RxD 1 4 7 NCV7349−3 Micro− controller 8 3 RLT = 60 W CANH CAN BUS 6 CANL 2 GND RLT = 60 W GND Figure 3. Application Diagram, NCV7349−3 Table 2. PIN FUNCTION DESCRIPTION Pin Name Description 1 TxD Transmit data input; low input Ù Driving dominant on bus; internal pull−up current 2 GND Ground 3 VCC Supply voltage 4 RxD Receive data output; bus in dominant Ù low output 5 5 NC VIO Not connected. On NCV7349−0 only. Input / Output pins supply voltage. On NCV7349−3 only 6 CANL Low−level CAN bus line (low in dominant mode) 7 CANH High−level CAN bus line (high in dominant mode) 8 STB Standby mode control input; internal pull−up current www.onsemi.com 3 NCV7349 FUNCTIONAL DESCRIPTION Standby Mode NCV7349 has two versions which differ from each other only by function of pin 5. NCV7349−0: Pin 5 is not connected. (see Figure 2) NCV7349−3: Pin 5 is VIO pin, which is supply pin for transceiver digital inputs/output (supplying pins TxD, RxD, STB) The VIO pin should be connected to microcontroller supply pin. By using VIO supply pin shared with microcontroller the I/O levels between microcontroller and transceiver are properly adjusted. This adjustment allows in applications with microcontroller supply down to 3 V to easy communicate with the transceiver. (See Figure 3) In standby mode both the transmitter and receiver are disabled and a very low−power differential receiver monitors the bus lines for CAN bus activity. The bus lines are terminated to ground and supply current is reduced to a minimum, typically 10 mA. When a wake−up request is detected by the low−power differential receiver, the signal is first filtered and then verified as a valid wake signal after a time period of twake, the RxD pin is driven low by the transceiver to inform the controller of the wake−up request. VIO Supply pin The VIO pin available only on NCV7349−3 version should be connected to microcontroller supply pin. By using VIO supply pin shared with microcontroller the I/O levels between microcontroller and transceiver are properly adjusted. See Figure 3. Pin VIO on NCV7349−3 does not provide the internal supply voltage for low−power differential receiver of the transceiver. Detection of wake−up request is not possible when there is no supply voltage on pin VCC. Operating Modes NCV7349 provides two modes of operation as illustrated in Table 3. These modes are selectable through pin STB. Table 3. OPERATING MODES Pin RxD Pin STB Mode Low Normal Bus dominant Bus recessive High Standby Wake−up request detected No wake−up request detected Low High Wake−up When a valid wake−up (dominant state longer than twake) is received during the standby mode the RxD pin is driven low. The wake−up detection is not latched: RxD returns to High state after tdwakedr when the bus signal is released back to recessive – see Figure 4. Normal Mode In the normal mode, 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 low EME. >tWake