Industry-Standard High-Speed CAN Transceivers with ±80V Fault Protection

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1 ; Rev 0; 2/05 Industry-Standard High-Speed CAN General Description The are pin-for-pin compatible, industry-standard, high-speed, control area network (CAN) transceivers with extended ±80V fault protection. These products are ideal automotive and industrial network applications where overvoltage protection is required. These CAN transceivers provide a link between the CAN protocol controller and the physical wires of the bus lines in a CAN. These devices can be used for +12V/+42V battery, automotive, and DeviceNet applications, requiring data rates up to 1Mbps. The CAN transceivers have an input common-mode range greater than ±12V, exceeding the ISO11898 specification of -2V to +7V, and feature ±8kV ESD protection, making these devices ideal for harsh automotive and industrial environments. The CAN transceivers provide a dominant timeout function that prevents erroneous CAN controllers from clamping the bus to a dominant level if the input is held low for greater than 1ms. The MAX13050/ provide a SPLIT pin used to stabilize the recessive commonmode voltage. The also has a slope-control mode that can be used to program the slew rate of the transmitter for data rates of up to 500kbps. The MAX13053 features a silent mode that disables the transmitter. The MAX13053 also has a reference output that can be used to bias the input of older CAN controllers that have a differential comparator. The MAX13054 has a separate dedicated logic input, 2, allowing interfacing with a +3.3V microcontroller. The are available in an 8-pin SO package and are specified to operate in the -40 C to +85 C and the -40 C to +125 C temperature ranges. +12V and +42V Automotive DeviceNet Nodes Applications Medium- and Heavy-Duty Truck Systems Industrial Features Fully Compatible with the ISO11898 Standard ±8kV ESD IEC Contact Discharge per IBEE Test Facility ±80V Fault Protection +3.3V Logic Compatible (MAX13054) High-Speed Operation of Up to 1Mbps Slope-Control Mode () Greater than ±12V Common-Mode Range Low-Current Standby Mode Silent Mode (MAX13053) Thermal Shutdown Short-Circuit Protection Transmit () Data Dominant Timeout Current Limiting SPLIT Pin (MAX13050/) Ordering Information PART TEMP RANGE PIN-PACKAGE MAX13050ESA -40 C to +85 C 8 SO MAX13050ASA/AUT* -40 C to +125 C 8 SO ESA -40 C to +85 C 8 SO ASA/AUT* -40 C to +125 C 8 SO MAX13053ESA -40 C to +85 C 8 SO MAX13053ASA/AUT* -40 C to +125 C 8 SO MAX13054ESA -40 C to +85 C 8 SO MAX13054ASA/AUT* -40 C to +125 C 8 SO *AUT denotes introduction to AECQ100 specifications. Pin Configurations, Functional Diagrams, and Typical Operating Circuits appear at end of data sheet. DeviceNet is a registered trademark of the Open DeviceNet Vendor Association. Selector Guide PART SPLIT SLOPE CONTROL STANDBY MODE SILENT MODE 3.3V SUPPLY Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at , or visit Maxim s website at REF PIN-FOR-PIN REPLACEMENT MAX13050 Yes Yes TJA1040 Yes Yes Yes PCA82C250/5-1 MAX13053 Yes Yes MAX13054 Yes Yes TJA1050, AMIS TLE6250v33, CF163

2 ABSOLUTE MAXIMUM RATINGS, V to +6V RS V to ( + 0.3V), STBY, S, REF, V to +6V,, SPLIT...± 80V Continuous Power Dissipation (T A = +70 C) 8-Pin SO (derate 5.9mW/ C above +70 C)...470mW Operating Temperature Range C to +125 C Junction Temperature C Storage Temperature Range C +150 C Lead Temperature (soldering, 10s) C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC ELECTRICAL CHARACTERISTICS ( = +5V ±5%, 2 = +3V to +3.6V, T A = T MIN to T MAX, unless otherwise noted. Typical values are at = +5V, 2 = +3.3V, R L = 60Ω, and T A = +25 C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Current I CC Recessive Dominant, R L = 60Ω 72 MAX13050// MAX MAX Supply Current I CC2 MAX13054, = 2 or floating 15 µa 25 Standby Current I STANDBY MAX13050/MAX Silent Mode I SILENT MAX ma Thermal-Shutdown Threshold T SH +165 C Thermal-Shutdown Hysteresis 13 C INPUT LEVELS (, STBY, S) High-Level Input Voltage V IH, STBY (MAX13054) Low-Level Input Voltage V IL, STBY (MAX13054) x 2 V =, V = 2 (MAX13054) High-Level Input Current I IH V STBY =, V S = (MAX13053) V = Low-Level Input Current I IL V STBY =, V S = (MAX13053) x 2 Input Capacitance C IN 10 pf, TRANSMITTER Recessive Bus Voltage Recessive Output Current V, Normal mode, V =, no load 2 3 V V Standby mode, no load mv I, V, V = ±76V ±3 I -32V V, V +32V ma Output Voltage V V = 0, dominant V Output Voltage V V = 0, dominant V Matching Between and Output Voltage DOM V = 0, dominant, T A = +25 C, (V + V ) mv ma µa V V µa µa 2

3 DC ELECTRICAL CHARACTERISTICS (continued) ( = +5V ±5%, 2 = +3V to +3.6V, T A = T MIN to T MAX, unless otherwise noted. Typical values are at = +5V, 2 = +3.3V, R L = 60Ω, and T A = +25 C.) (Note 1) Differential Output (V - V ) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Dominant, V = 0, 45Ω R L 60Ω V V DIFF Recessive, V =, no load mv Short-Circuit Current I SC V = 0, V = ma V = 5V, V = V = 40V, V = 0 (Note 2) Short-Circuit Current I SC V = 76V, V = 0 63 OUTPUT LEVELS I = -100µA High-Output-Voltage Level V OH I = -100µA (MAX13054) 0.8 x 0.8 x 2 Low-Output-Voltage Level V OL I = 5mA 0.4 V COMMON-MODE STABILIZATION (SPLIT) and REF Output Voltage V SPLIT Normal mode, -500µA I SPLIT 500µA Leakage Current I LEAK Standby mode, -40V V SPLIT +40V 20 Standby mode, -76V V SPLIT +76V 50 REF Output Voltage V REF -50µA I REF +50µA (MAX13053) 0.45 x 0.55 x DC BUS RECEIVER (V =, and externally driven) -12V V CM +12V Differential Input Voltage V DIFF MAX13050//MAX V V CM +12V (standby mode) 0.3 x x Differential Input Hysteresis V D IF F( H Y S T) Normal mode, -12V V CM +12V 70 mv Common-Mode Input Resistance R ICM Normal or standby mode, V = V = ±12V Matching Between and Common-Mode Input Resistance ma V V µa kω R IC_MATCH V = V % Differential Input Resistance R DIFF Normal or standby mode, V - V = 1V Common-Mode Input Capacitance kω C IM V = 20 pf Differential Input Capacitance V = 10 pf Input Leakage Current I LI = 0, V = V = 5V µa SLOPE CONTROL RS ( ) Input Voltage for High Speed V IL_RS 0.3 x V V V 3

4 DC ELECTRICAL CHARACTERISTICS (continued) ( = +5V ±5%, 2 = +3V to +3.6V, T A = T MIN to T MAX, unless otherwise noted. Typical values are at = +5V, 2 = +3.3V, R L = 60Ω, and T A = +25 C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Voltage for Standby V IH _ RS 0.75 x Slope-Control Mode Voltage V SLOPE -200µA < I RS < 10µA High-Speed Mode Current I IL_RS V RS = µa ESD Protection TIMING CHARACTERISTICS IEC Contact Discharge Method per IBEE test facility (Note 3) 0.4 x 0.6 x V V ±8 kv ( = +5V ±5%, 2 = +3V to +3.6V, R L = 60Ω, C L = 100pF, T A = T MIN to T MAX, unless otherwise noted. Typical values are at = +5V, 2 = +3.3V, and T A = +25 C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Delay to Bus Active t ON Figure 1 (Note 4) ns Delay to Bus Inactive t OFF Figure 1 (Note 4) MAX13050// MAX MAX Delay Bus to Receiver Active t ON Figure 1 (Note 4) ns Delay Bus to Receiver Inactive t OFF Figure 1 (Note 4) ns Delay to Active (Dominant Loop Delay) Delay to Inactive (Recessive Loop Delay) Delay to Active (Dominant Loop Delay) Slew-Rate Controlled Delay to Inactive (Loop Delay) Slew-Rate Controlled t ONLOOP Figure 1 (Note 4) ns T OFFLOOP Figure 4 (Note 4) ns t ONLOOP-S t OFFLOOP-S R RS = 24kΩ (500kbps) R RS = 100kΩ (125kbps) R RS = 180kΩ (62.5kbps) R RS = 24kΩ (500kbps) R RS = 100kΩ (125kbps) R RS = 180kΩ (62.5kbps) ns ns µs ns µs R RS = 24kΩ (500kbps) 10 Differential Output Slew Rate SR R RS = 100kΩ (125kbps) 2.7 V/µs R RS = 180kΩ (62.5kbps) 1.6 4

5 TIMING CHARACTERISTICS (continued) ( = +5V ±5%, 2 = +3V to +3.6V, R L = 60Ω, C L = 100pF, T A = T MIN to T MAX, unless otherwise noted. Typical values are at = +5V, 2 = +3.3V, and T A = +25 C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Dominant Time for Wake-Up with Bus Delay STBY to Normal Mode (DOMINANT) t WAKE Standby mode, V DIFF = +3V, Figure µs t STBY - NORM = 0 (MAX13050, MAX13054) FROM STBY falling to - = 0.9V 5 10 µs Dominant Timeout t DOM V = ms Note 1: All currents into the device are positive, all currents out of the device are negative. All voltages are referenced to the device ground, unless otherwise noted. Note 2: Guaranteed by design, not production tested. Note 3: MAX13050 tested by IBEE test facility. Please contact factory for report. /MAX13053/MAX13054 are pending ESD evaluation. Note 4: For the, V RS = 0. V DIFF 0.9V DOMINANT 0.3 x OR 0.3 x 2 0.5V Timing Diagrams RECESSIVE 0.7 x OR 0.7 x 2 t ON t OFF t ON t OFF t ONLOOP t OFFLOOP Figure 1. Timing Diagram 5

6 V DIFF Figure 2. Timing Diagram for Standby and Wake-Up Signal 0.9V STANDBY MODE DOMINANT t WAKE Timing Diagrams Typical Operating Characteristics ( = +5V, R L = 60Ω, C L = 100pF, 2 = +3.3V, and T A = +25 C, unless otherwise noted.) SLEW RATE (V/µs) SLEW RATE vs. R RS AT 100kbps DOMINANT RECESSIVE R RS (kω) MAX13050 toc01 SUPPLY CURRENT (ma) T A = -40 C SUPPLY CURRENT vs. DATA RATE T A = +125 C T A = +25 C DATA RATE (kbps) MAX13050 toc02 STANDBY SUPPLY CURRENT (µa) STANDBY SUPPLY CURRENT vs. TEMPERATURE (RS = ) TEMPERATURE ( C) MAX13050 toc03 6

7 Typical Operating Characteristics ( = +5V, R L = 60Ω, C L = 100pF, 2 = +3.3V, and T A = +25 C, unless otherwise noted.) STANDBY SUPPLY CURRENT (µa) REF VOLTAGE (V) RECEIVER OUTPUT HIGH (VCC2 - ) (mv) STANDBY SUPPLY CURRENT vs. TEMPERATURE (STBY = ) MAX13050 MAX TEMPERATURE ( C) REF VOLTAGE vs. REG OUTPUT CURRENT T A = +125 C T A = +25 C T A = -40 C MAX13054 REG OUTPUT CURRENT (µa) RECEIVER OUTPUT HIGH vs. OUTPUT CURRENT T A = +25 C T A = +125 C T A = -40 C MAX13050 toc04 MAX13050 toc07 MAX13050 toc10 RECEIVER PROPAGATION DELAY (ns) LEAKAGE CURRENT (µa) RECEIVER PROPAGATION DELAY vs. TEMPERATURE 100 DATA RATE = 100kbps DOMINANT RECESSIVE TEMPERATURE ( C) SPLIT LEAKAGE CURRENT vs. TEMPERATURE RECEIVER OUTPUT HIGH (VCC - ) (V) TEMPERATURE ( C) RECEIVER OUTPUT HIGH vs. OUTPUT CURRENT MAX13050//MAX13053 T A = +125 C T A = +25 C T A = -40 C MAX13050 toc04 MAX13050 toc08 MAX13050 toc11 DRIVER PROPAGATION DELAY (ns) VOLTAGE (V) VOLTAGE (mv) DRIVER PROPAGATION DELAY vs. TEMPERATURE DOMINANT RECESSIVE TEMPERATURE ( C) RECEIVER OUTPUT LOW vs. OUTPUT CURRENT MAX13050//MAX13053 MAX = +3.3V T A = +125 C OUTPUT CURRENT (ma) T A = +25 C T A = -40 C RECEIVER OUTPUT LOW vs. OUTPUT CURRENT T A = +25 C T A = +125 C T A = -40 C MAX13050 toc06 MAX13050 toc09 20 MAX13050 toc OUTPUT CURRENT (µa) OUTPUT CURRENT (ma) OUTPUT CURRENT (ma) 7

8 Typical Operating Characteristics (continued) ( = +5V, R L = 60Ω, C L = 100pF, 2 = +3.3V, and T A = +25 C, unless otherwise noted.) DIFFERENTIAL VOLTAGE (V) T A = -40 C DIFFERENTIAL VOLTAGE vs. DIFFERENTIAL LOAD T A = +25 C T A = +125 C DIFFERENTIAL LOAD R L (Ω) DRIVER PROPAGATION DELAY, (R RS = 24kΩ, 75kΩ AND 100kΩ) 1.00µs MAX13051 toc16 MAX13050 toc13 (5V/div) V DIFF (2V/div) R RS = 24kΩ V DIFF (2V/div) R RS = 75kΩ V DIFF (2V/div) R RS = 100kΩ RECEIVER PROPAGATION DELAY 200ns DRIVER PROPAGATION DELAY 200ns/div MAX13051 toc14 MAX13051 toc17 V DIFF (1V/div) (2V/div) (2V/div) V DIFF (1V/div) LOOPBACK PROPAGATION DELAY (µs) MAX13054 WAVEFORM 200ns/div MAX13050 toc15 LOOPBACK PROPAGATION DELAY vs. R RS RECESSIVE DOMINANT R RS (kω) MAX13051 toc18 2V/div V DIFF 2V/div 2V/div 8

9 MAX13050 PIN MAX13053 MAX13054 NAME Ground Detailed Description The ±80V fault-protected CAN transceivers are ideal for automotive and industrial network applications where overvoltage protection is required. These devices provide a link between the CAN protocol controller and the physical wires of the bus lines in a control area network (CAN). These devices can be used for +12V and +42V battery automotive and DeviceNet applications, requiring data rates up to 1Mbps. The dominant timeout prevents the bus from being blocked FUNCTION Pin Description Transmit Data Input. is a CMOS/TTL-compatible input from a CAN controller with a 25kΩ pullup to. For the MAX13054, is pulled to Supply Voltage. Bypass to with a 0.1µF capacitor Receive Data Output. is a CMOS/TTL-compatible output from the physical bus lines and. For the MAX13054, output voltage is referenced to the 2 supply voltage. 5 5 SPLIT Common-Mode Stabilization Output. Output equaled to 0.5 x. SPLIT goes high impedance in standby mode CAN Bus-Line Low CAN Bus-Line High 8 8 STBY 8 RS Standby Input. Drive STBY low for high-speed operation. Drive STBY high to place the device in low-current standby mode. Mode-Select Input. Drive RS low or connect to for high-speed operation. Connect a resistor between RS and to control output slope. Drive RS high to put into standby mode. 5 REF Reference Output Voltage. Always on reference output voltage, set to 0.5 x. 8 S 5 2 Silent-Mode Input. Drive S low to enable and to operate in high-speed mode. Drive S high to disable the transmitter. Logic-Supply Input. 2 is the logic supply voltage for the input/output between the CAN transceiver and microprocessor. 2 allows fully compatible +3.3V logic on all digital lines. Bypass to with a 0.1µF capacitor. Connect 2 to for 5V logic compatibility. by a hungup microcontroller. If the input is held low for greater than 1ms, the transmitter becomes disabled, driving the bus line to a recessive state. The MAX V logic input allows the device to communicate with +3.3V logic, while operating from a +5V supply. The MAX13050 and provide a split DC-stabilized voltage. The MAX13053 has a reference output that can be used to bias the input of a CAN controller s differential comparator. All devices can operate up to 1Mbps (high-speed mode). The slope-control feature allows the user to program the slew rate of the transmitter for data 9

10 rates of up to 500kbps. This reduces the effects of EMI, thus allowing the use of unshielded-twisted or parallel cable. The MAX13050/ and MAX13054 standby mode shuts off the transmitter and switches the receiver to a low-current/low-speed state. The input common-mode range is greater than ±12V, exceeding the ISO11898 specification of -2V to +7V, and feature ±8kV Contact Discharge protection, making these devices ideal for harsh automotive and industrial environments. ±80V Fault Protected The feature ±80V fault protection. This extended voltage range of,, and SPLIT allows use in high-voltage systems and communication with high-voltage buses. Operating Modes High-Speed Mode The can achieve transmission rates of up to 1Mbps when operating in high-speed mode. Drive STBY low to operate the MAX13050 and MAX13054 in high-speed operation. Connect RS to ground to operate the in high-speed mode. Slope-Control Mode () Connect a resistor from RS to ground to select slopecontrol mode (Table 1). In slope-control mode, and slew rates are controlled by the resistor (16kΩ RRS 200kΩ) connected between RS and. Controlling the rise and fall slopes reduces highfrequency EMI and allows the use of an unshieldedtwisted pair or a parallel pair of wires as bus lines. The slew rate can be approximated using the formula below: SR( V / µ s) = 250 R RS where, SR is the desired slew rate and R RS is in kω. Standby Mode (MAX13050//MAX13054) In standby mode (RS or STBY = high), the transmitter is switched off and the receiver is switched to a low-current/low-speed state. The supply current is reduced during standby mode. The bus line is monitored by a low-differential comparator to detect and recognize a wake-up event on the bus line. Once the comparator detects a dominant bus level greater than t WAKE, pulls low. Table 1. Mode Selection Truth Table CONDITION FORCED AT RS MODE RESULTING CURRENT AT RS V RS or 0.3 x High-Speed I RS 500µA 0.4 x V RS 0.6 x Slope Control 10µA I RS 200µA V RS 0.75 x Standby I RS 10µA Drive STBY high for standby mode operation for the MAX13050 and MAX Apply a logic-high to RS to enter a low-current standby mode for the. Silent Mode S (MAX13053) Drive S high to place the MAX13053 in silent mode. When operating in silent mode, the transmitter is disabled regardless of the voltage level at. however, still monitors activity on the bus line. Common-Mode Stabilization (SPLIT) SPLIT provides a DC common-mode stabilization voltage of 0.5 x when operating in normal mode. SPLIT stabilizes the recessive voltage to 0.5 x for conditions when the recessive bus voltage is lowered, caused by an unsupplied transceiver in the network with a significant leakage current from the bus lines to ground. Use SPLIT to stabilize the recessive commonmode voltage by connecting SPLIT to the center tap of the split termination, see the Typical Operating Circuit. In standby mode or when = 0, SPLIT becomes high impedance. Reference Output (MAX13053) MAX13053 has a reference voltage output (REF) set to 0.5 x. REF can be utilized to bias the input of a CAN controller s differential comparator, and to provide power to external circuitry. Transmitter The transmitter converts a single-ended input () from the CAN controller to differential outputs for the bus lines (, ). The truth table for the transmitter and receiver is given in Table 2. Dominant Timeout The CAN transceivers provide a transmitter dominant timeout function that prevents erroneous CAN controllers from clamping the bus to a dominant level by a continuous low signal. When the remains low for the 1ms maximum timeout period, the transmitter becomes disabled, thus driving the bus line to a recessive state 10

11 Table 2. Transmitter and Receiver Truth Table () RS BUS STATE Low V RS 0.75 x High Low Dominant Low High or Float V RS 0.75 x / 2 / 2 Recessive High X V RS 0.75 x R ICM to R ICM to Recessive High Table 3. Transmitter and Receiver Truth Table (MAX13053) RS BUS STATE Low V S < 0.8V High Low Dominant Low High or Float V S < 0.8V / 2 / 2 Recessive High X V S > 2V / 2 / 2 Recessive High (MAX13050/MAX13054) STBY BUS STATE Low High or Float X *For the MAX13054 V - V V STBY 0.8V *V STBY 0.3 x 2 V STBY 0.8V *V STBY 0.3 x 2 V STBY 2V *V STBY 0.7 x 2 t DOM TRANSMITTER ENABLED TRANSMITTER DISABLED Figure 3. Transmitter Dominant Timeout Timing Diagram (Figure 3). The transmitter becomes enabled upon detecting a rising edge at. Receiver The receiver reads differential inputs from the bus lines (, ) and transfers this data as a singleended output () to the CAN controller. It consists of a comparator that senses the difference V DIFF = ( - ) with respect to an internal threshold of 0.7V. If this difference is positive (i.e., V DIFF > 0.7), a logic-low is present at. If negative (i.e., V DIFF < 0.7V), a logic-high is present. High Low Dominant Low / 2 / 2 Recessive High R ICM to R ICM to Recessive High The and common-mode range is greater than ±12V. is logic-high when and are shorted or terminated and undriven. +3.3V Logic Compatibility (MAX13054) A separate input, 2, allows the MAX13054 to communicate with +3.3V logic systems while operating from a +5V supply. This provides a reduced input voltage threshold to the and STBY inputs, and provides a logic-high output at compatible with the microcontroller s system voltage. The logic compatibility eliminates longer propagation delay due to level shifting. Connect 2 to to operate the MAX13054 with +5V logic systems. Driver Output Protection The current-limiting feature protects the transmitter output stage against a short circuit to a positive and negative battery voltage. Although the power dissipation increases during this fault condition, current-limit protection prevents destruction of the transmitter output stage. Upon removal of a short, the CAN transceiver resumes normal operation. Thermal Shutdown If the junction temperature exceeds +165 C, the driver is switched off. The hysteresis is approximately 13 C, 11

12 SPLIT R L = 60Ω R L = 60Ω Figure 4. Multiple Receivers Connected to CAN Bus disabling thermal shutdown once the temperature drops below +152 C. In thermal shutdown, and go recessive. After a thermal-shutdown event, the IC resumes normal operation when the junction temperature drops below the thermal-shutdown hysteresis, and upon the CAN transceiver detecting a rising edge at. Applications Information Reduced EMI and Reflections In slope-control mode, the s and outputs are slew-rate limited, minimizing EMI and reducing reflections caused by improperly terminated cables. In multidrop CAN applications, it is important to maintain a direct point-to-point wiring scheme. A single pair of wires should connect each element of the CAN bus, and the two ends of the bus should be terminated with 120Ω resistors, see Figure 4. A star configuration should never be used. Any deviation from the point-to-point wiring scheme creates a stub. The high-speed edge of the CAN data on a stub can create reflections back down the bus. These reflections can cause data errors by eroding the noise margin of the system. Although stubs are unavoidable in a multidrop system, care should be taken to keep these stubs as small as possible, especially in high-speed mode. In slope-control mode, the requirements are not as rigorous, but stub length should still be minimized. TWISTED PAIR STUB LENGTH KEEP AS SHORT AS POSSIBLE TRANSCEIVER 1 HIGH- VOLTAGE DC SOURCE TRANSCEIVER 2 R C 50MΩ to 100MΩ Layout Consideration and are differential signals and steps should be taken to insure equivalent parasitic capaci- CHARGE-CURRENT- LIMIT RESISTOR Cs 150pF R L = 120Ω R D 330kΩ DISCHARGE RESISTANCE STORAGE CAPACITOR TRANSCEIVER 3 DEVICE UNDER TEST Figure 5. IEC Contact Discharge ESD Test Model IPEAK tr = 0.7ns to 1ns I 100% 90% 10% 30ns 60ns Figure 6. IEC ESD Test Model Current Waveform t 12

13 tance. Place the resistor at RS as close as possible to the to minimize any possible noise coupling at the input. Power Supply and Bypassing The require no special layout considerations beyond common practices. Bypass and 2 to with a 0.1µF ceramic capacitor mounted close to the IC with short lead lengths and wide trace widths. ESD Protection ESD-protection structures are incorporated on and to protect against ESD encountered during handling and assembly. and inputs have extra protection to protect against static electricity found in normal operation. Maxim s engineers have developed state-of-the-art structures to protect these pins against ±8kV ESD Contact Discharge without damage. After an ESD event, the MAX13050//MAX13053/ MAX13054 continue working without latchup. ESD protection can be tested in several ways. The and inputs are characterized for protection to ±8kV using the IEC Contact Discharge Method per IBEE Test facility. ESD Test Conditions ESD performance depends on a number of conditions. Contact Maxim for a reliability report that documents test setup, methodology, and results. Human Body Model Figure 5 shows the IEC Contact Discharge Model, and Figure 6 shows the current waveform it generates when discharged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest, which is then discharged into the device through a 1.5kΩ resistor. 13

14 STBY MAX13050 DOMINANT TIMEOUT MUX WAKE-UP MODE CONTROL WAKE-UP FILTER THERMAL SHUTDOWN DRIVER Functional Diagrams R SPLIT R 14

15 RS TIMEOUT AND SLOPE- CONTROL MODE MUX WAKE-UP MODE CONTROL WAKE-UP FILTER THERMAL SHUTDOWN DRIVER Functional Diagrams (continued) R R SPLIT 15

16 REF S RS MAX13053 DOMINANT TIMEOUT MUX R R WAKE-UP MODE CONTROL WAKE-UP FILTER THERMAL SHUTDOWN DRIVER Functional Diagrams (continued) 16

17 STBY 2 MAX DRIVER DOMINANT TIMEOUT MUX WAKE-UP MODE CONTROL WAKE-UP FILTER THERMAL SHUTDOWN DRIVER Functional Diagrams (continued) 17

18 CAN CONTROLLER TXO RXO I/O CAN CONTROLLER TXO RXO I/O 0.1µF 0.1µF MAX13050 SPLIT STBY MAX13053 S REF 60Ω 60Ω 60Ω 60Ω TO BUS 4.7nF TO BUS 4.7nF CAN CONTROLLER TXO RXO CAN CONTROLLER TXO I/O RXO I/O Typical Operating Circuits 0.1µF 0.1µF +3.3V 0.1µF MAX13054 STBY SPLIT STBY LOGIC 60Ω 60Ω 60Ω 60Ω TO BUS TO BUS 4.7nF 4.7nF 18

19 TOP VIEW MAX13050 SO MAX13053 SO STBY SPLIT S REF Pin Configurations RS SPLIT SO STBY MAX SO. Chip Information TRANSISTOR COUNT: 1400 PROCESS: BiCMOS 19

20 Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to N 1 TOP VIEW D e B A1 FRONT VIEW E A H C L SIDE VIEW 0-8 INCHES MILLIMETERS DIM MIN MAX MIN MAX A A B C e BSC 1.27 BSC E H L VARIATIONS: DIM D D D INCHES MIN MAX MIN MAX N MS AA AB AC PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE,.150" SOIC APPROVAL MILLIMETERS DOCUMENT CONTROL NO. REV B 1 1 SOICN.EPS Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 20 Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc.

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