User Guide 051 ISL7202xSEHEVAL1Z Evaluation Board User Guide Description Key Features The Intersil ISL7202xSEH family of devices are 3.3V radiation tolerant CAN transceivers that are compatible with the ISO11898-2 standard for use in CAN (Controller Area Network) serial communication systems. The transceiver performs transmit and receive functions between the CAN controller and the CAN differential bus. It can transmit and receive at bus speeds of up to 1Mbps. They were specifically designed to operate in harsh environments such as space. • D-SUB 9-pin male connector for connection to another CAN evaluation board The ISL7202xSEHEVAL1Z boards are designed to provide a quick and easy method for evaluating the ISL72026SEH, ISL72027SEH and ISL72028SEH 3.3V radiation tolerant CAN transceivers. These devices are unique ICs. To use this evaluation board properly requires a thorough knowledge of the operation of the ICs. Refer to the ISL72026SEH, ISL72027SEH and ISL72028SEH datasheets for an understanding of the functions and features of these devices. The ISL72026SEHEVAL1Z, ISL72027SEHEVAL1Z and ISL72028SEHEVAL1Z evaluation boards are built using the same base board, P/N: ISL7202xSEHEVAL1Z. Throughout this document when we use “ISL7202xSEHEVAL1Z” the information applies to all three evaluation boards. The three boards are exactly the same, except for the CAN transceiver part installed at reference designator U1. Ordering Information PART NUMBER ISL72026SEH Evaluation Board ISL72027SEHEVAL1Z ISL72027SEH Evaluation Board ISL72028SEHEVAL1Z ISL72028SEH Evaluation Board VCC D 2 3 • Jumpers to select between the three rise/fall settings or tie RS high to enter low power listen (ISL72026, ISL72027)/shutdown (ISL72028) modes • Banana jacks for power, ground and voltage common-mode (VCM) connections References ISL72026SEH Datasheet ISL72027SEH Datasheet ISL72028SEH Datasheet Specifications These evaluation boards have been configured and optimized for the following conditions: • VCC = 3V to 3.6V • CAN bus termination resistance of 60Ω across the CANH and CANL differential signal lines DESCRIPTION 1 • Convenient test points and connections for test equipment • Data rate: ≤1Mbps ISL72026SEHEVAL1Z Tx DATA IN • 60Ω resistor across the differential signal lines to evaluate propagation delay, rise/fall time and skew parameters • Board temperature: +25°C Tx DATA IN RS 8 GND CANH 7 CANH VCC CANL 6 CANL VCC 1 D RS 8 2 GND CANH 7 CANH 3 VCC CANL 6 CANL 4 R VREF 5 0.1µF 0.1µF 4 LBK R 5 µController ISL72027SEH, ISL72028SEH ISL72026SEH Rx DATA OUT Rx DATA OUT FIGURE 1. ISL7202xSEHEVAL1Z BLOCK DIAGRAM October 26, 2015 UG051.0 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2015. All Rights Reserved Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. User Guide 051 Introduction to easily interface with the IC to evaluate its functions, features and performance. The ISL72026SEHEVAL1Z, ISL72027SEHEVAL1Z and ISL72028SEHEVAL1Z evaluation boards are exactly the same, except for the CAN transceiver part installed at reference designator U1. This user guide will guide the user through the process of configuring and using the evaluation board to evaluate the ISL7202xSEH devices. Functional Description • The ISL72026SEHEVAL1Z has an ISL72026SEHF/PROTO IC installed at U1. It will have a paper label indicating it is an ISL72026SEHEVAL1Z board. The ISL7202xSEHEVAL1Z evaluation board provides a simple platform to demonstrate the features and evaluate the performance of the ISL7202xSEH family of ICs. It provides easy access to the pins of the ISL7202xSEH ICs and convenient connectors/test points for connecting test equipment. The schematic, bill of materials and top silkscreen for the board are available on pages 9 through 11. • The ISL72027SEHEVAL1Z has an ISL72027SEHF/PROTO IC installed at U1. It will have a paper label indicating it is an ISL72027SEHEVAL1Z board. • The ISL72028SEHEVAL1Z has an ISL72028SEHF/PROTO IC installed at U1. It will have a paper label indicating it is an ISL72028SEHEVAL1Z board. The ISL7202xSEHEVAL1Z boards are designed to provide a quick and easy method for evaluating the ISL72026SEH, ISL72027SEH and ISL72028SEH 3.3V radiation tolerant CAN transceivers. Table 1 shows the functional differences between the three part types. Figure 1 shows the block diagrams/pinouts for the parts. F TABLE 1. TABLE OF DIFFERENCES BETWEEN THE PART TYPES FEATURE ISL72026SEH ISL72027SEH ISL72028SEH Loopback Yes No No VREF Output No Yes Yes Listen Mode Yes Yes No Shutdown Mode No No Yes Supply Current in Listen Mode 2mA (maximum) 2mA (maximum) N/A Supply Current in Shutdown Mode N/A N/A 50µA (maximum) NOTE: N/A = Not Applicable A picture of the evaluation board for ISL72028SEHEVAL1Z is shown in Figure 6 on page 8. The ISL72028SEHF/PROTO 8 Ld flatpack IC is soldered onto the evaluation board. It is located in the upper center of the board and is designated as U1. The Intersil ISL7202xSEH family of devices are 3.3V radiation tolerant CAN transceivers that are compatible with the ISO11898-2 standard for use in CAN (Controller Area Network) serial communication systems. They were specifically designed to operate in harsh environments such as space. The transceiver performs transmit and receive functions between the CAN controller and the CAN differential bus. It can transmit and receive at bus speeds of up to 1Mbps. It is designed to operate over a common-mode range of -7V to +12V with a maximum of 120 nodes. The device is capable of withstanding ±20V on the CANH and CANL bus pins outside of ion beam and ±16V under ion beam. The part has various configurations of operation. The evaluation board contains standard jumpers, BNC connector, banana connectors, cable connector and load resistors to allow the user Submit Document Feedback 2 Figures 11 through 18 show performance data taken using the ISL7202xSEHEVAL1Z evaluation board and basic lab equipment. Table 1 shows the differences between the different parts in the family. The sections that follow will discuss using the evaluation board. Basic Layout of Evaluation Board The basic layout of the evaluation board is as follows: Refer to Figure 10 on page 11 or the actual ISL7202xSEHEVAL1Z evaluation board. Located in the upper center of the board is the IS7202xSEHF/PROTO transceiver IC (U1). The evaluation board has a pin 1 dot, to show how the IC should be oriented onto the evaluation board. The IC pin 1 indicator dot needs to be aligned with the evaluation board pin 1 dot indicator. The board comes with the IC soldered onto the board. Power for the IC is located at the left side of the board through banana jacks labeled VCC and GND. A DC voltage source of 3.3V must be connected between VCC and GND to power the part. Test points TP13 (VCC) and TP2 (GND) are available to measure the VCC voltage to the part. Access to the D input to the transceiver is at the BNC connector labeled D at the upper right corner of the evaluation board. You would connect the digital source of the CAN digital test pattern at this connector. Access to R output of the transceiver is at the test point labeled TP4 located at the top center of the evaluation board. There is a through-hole labeled R that could have a wire soldered to it, if you want to feed the digital output into a CAN controller board. Control of the RS pin is through jumpers J5, J6, J7 and J8 located at middle left side of the evaluation board. Only one of these jumper locations should have a jumper installed at any one time. Putting the jumper at J5 will put the transceiver in the listen mode for the ISL72026, ISL72027 parts and in the low power shutdown mode for the ISL72028 part. Putting the jumper at J6 will put the transceiver driver in the slow speed mode, at J7 in the medium speed mode, and at J6 in the fast speed mode. Note: J4 and R5 are not populated. They can be used to put a mechanical potentiometer at the RS pin. UG051.0 October 26, 2015 User Guide 051 Access to the differential pins (CANH and CANL) are through the test points TP7 and TP8 or through the BNC connectors labeled CANH and CANL (not populated) or through the D-SUB 9 pin male connector J1, located at the bottom of the board. The J1 connector can be used to connect two evaluation boards together, to evaluate the performance of two boards communicating with each other over various length cables. The CANH and CANL BNCs can be used to apply voltages to the differential pins to evaluate the receiver of the transceiver. The board comes populated with a 60Ω resistor (R10) installed across the CANH and CANL lines. Many performance tests for the transceiver such as propagation delay, rise time, fall time and skew are done with a 60Ω resistor. In a normal CAN system the bus is terminated at both ends with a 120Ω resistor, which gives a differential loading of 60Ω. See the board schematic (Figure 7 on page 9) for the reference designators of the jumpers, resistors and connectors associated with each I/O. Power Supply The ISL7202xSEH ICs require a DC power supply in the range of 3.0V to 3.6V for proper operation. The power supply is connected at banana jacks VCC and GND. The power supply should be capable of delivering 100mA of current. the transceiver remains active to allow for diagnostic testing of the node. Installing a jumper at position 1 to 2 on jumper J9 of the evaluation board will connect the LBK pin to VCC putting the part in loopback state. Removing the jumper will put the part back into normal operation. LBK pin of the transceiver has an internal pull-down. VREF PIN (ISL72027SEH AND ISL72028SEH) The VREF pin (pin 5) of the ISL72027SEH and ISL72028SEH parts outputs a voltage equal to VCC/2. This voltage is available for applications that want to implement a split termination configuration on the bus. See the application section titled “Split Mode Termination” in the datasheets of the ISL72027SEH or ISL72028SEH for more information. To implement a split termination on the bus pins of the evaluation boardA capacitor can be installed at C7, R11 and R12 can be populated with resistors, and a jumper installed at position 2 and 3 of jumper J9. Test Points The board has various test points for ease of connecting probes to make measurements. The test points available are described in Table 2. TABLE 2. DESIGNATOR DESCRIPTION TP1 Ground test point TP2 Ground test point TP3 D input test point TP4 R output test point The ISL72027SEH and ISL72028SEH ICs have two logic control input pins; the D (pin 1) and RS (pin 8). TP5 LBK or VREF test point TP6 RS pin test point D PIN TP7 CANH pin test point The D pin is the digital input to the driver of the transceiver. A digital bit pattern is applied at this pin. A logic 1 on the D pin puts the CANH and CANL differential pins in the recessive state. A logic 0 on the D pin puts the CANH and CANL differential pins in the dominant state. TP8 CANL pin test point TP9 Ground test point TP10 Not populated - VCM test point TP11 Ground test point TP12 Not populated - R output test point TP13 VCC test point Evaluation Board Logic Control The ISL72026SEH IC has three logic control input pins; the D (pin 1), RS (pin 8) and LBK (pin 5). The logic 1 VIH level is from 2.0V to 5.5V with a VCC supply voltage of 3.0V to 3.6V. The logic 0 VIL level is from 0.8V to 0V. RS PIN The output driver rise and fall time has three distinct selections that may be chosen by using a resistor from the RS pin to GND. Connecting the RS pin directly to GND results in output switching times that are the fastest, limited only by the drive capability of the output stage. RS = 10kΩ provides for a typical slew rate of 8V/µs and RS = 50kΩ provides for a typical slew rate of 4V/µs. Putting a high logic level to the RS pin places the transceiver in a low current listen mode for the ISL72026SEH and ISL72027SEH parts and a low current shutdown mode for the ISL72028SEH part. LBK PIN (ISL72026SEH) When a high level is applied to the LBK pin, the device enters the loopback state. The transceiver CANH and CANL pins are disconnected from the bus. The driver and receiver circuitry of Submit Document Feedback 3 UG051.0 October 26, 2015 User Guide 051 Board Component Definitions DESIGNATOR DESCRIPTION U1 ISL7202xSEHF/PROTO flatpack IC VCC VCC power supply connection (3.3VDC) GND Ground connection J1 9-pin male D-SUB connector (used to connect to another CAN evaluation board) J4 Not populated - jumper on RS pin to connect mechanical potentiometer J5 Jumper on RS pin to connect it to VCC (jumper installed at this location will put the transceiver in listen mode (ISL72026, ISL72027) or shutdown mode (ISL72028) J6 Jumper on RS pin to connect the RS pin to ground through a 50kΩ resistor (jumper installed at this location will put the transceiver in slow speed mode). J7 Jumper on RS pin to connect the RS pin to ground through a 10kΩ resistor (jumper installed at this location will put the transceiver in medium speed mode). J8 Jumper on RS pin to connect the RS pin to ground (jumper installed at this location will put the transceiver in high speed mode). J9 Three pin jumper on the LBK pin (ISL72026) or VREF pin (ISL72027SEH, ISL72028SEH). Install jumper in upper position (1 to 2) to put the ISL72026SEH device in loopback mode. Remove jumper for normal operation. Put jumper in lower position (2 to 3) to connect CANH to CANL differential output pins for evaluation of split mode termination for ISL72027SEH and ISL72028SEH. J10 Jumper, location is not populated. It needs to be populated if you are going to use BNC connector labeled CANH. J11 Jumper, location is not populated. It needs to be populated if you are going to use BNC connector labeled CANL. D BNC connector. Provides access to the D pin of the transceiver. CANH BNC connector, location is not populated. Provides access to the CANH pin for special receiver testing and fault testing. CANL BNC connector, location is not populated. Provides access to the CANL pin for special receiver testing and fault testing. FUNCTION GENERATOR 0V to 3V 125kHz SQUARE WAVE RS TP6 D TP1 R1 J6 R6 TP3 J7 R7 J8 R8 GND 50Ω OSCILLOSCOPE TP9 GND J5 TP4 TP7 ISL72027SEH Eval1Z R U1 R15 CANH CANL C2 LOOP/SPLIT CH1 CH2 CH3 CH4 TP3 D TP7 CANH TP8 CANL TP4 R R16 TP8 TP5 TP13 J1 R10 TP11 GND TP9 GND VCM VCC GND + Connect probes at the following test points on the evaluation board. - DC POWER SUPPLY +3.3V FIGURE 2. BASIC EVALUATION TEST SETUP BLOCK DIAGRAM (MEASURING PROPAGATION DELAY, SKEW AND RISE/FALL TIME) Submit Document Feedback 4 UG051.0 October 26, 2015 User Guide 051 Using the Board to Measure Propagation Delay, Skew and Rise/Fall Time Refer to Figure 2 on page 4. Lab Equipment The equipment, external supplies and signal sources needed to operate the board: 1. 3.3V DC power supply 2. Function/signal generator (HP 8112A pulse generator or equivalent) 3. Four channel oscilloscope (Tektronix TDS5140 digital oscilloscope or equivalent) Initial Board Setup Procedure 1. Attach the main evaluation board to the DC power supply to the banana jacks labeled VCC and GND as shown in Figure 2. Positive terminal at VCC and negative terminal at GND. The supply should be capable of delivering 3.0V to 3.6V and 100mA of current. Set the supply voltage to 3.3V. 5. Use the “Measure” menu of the oscilloscope to set up the following four measurements: a. LOW to HIGH propagation delay (tPLH) to measure the time from the 50% point of the falling edge of CH1 (D pin) to the 900mV point on the rising edge of the M1 trace (VDIFF). b. HIGH to LOW propagation delay (tPHL) to measure the time from the 50% point of the rising edge of CH1 (D pin) to the 500mV point on the falling edge of M1 trace (VDIFF). c. Output rise time (tr) to measure the 10% to 90% time of the rise edge of the M1 trace (VDIFF). d. Output fall time (tf) to measure the 90% to 10% time of the falling edge of the M1 trace (VDIFF). 6. Ensure that a jumper is installed at J8 (selects fast driver edges by connecting the RS pin to ground) and no jumpers are installed at J5, J6, J7 and J9. 7. Enable the function generator. The scope plots should look like the ones shown in Figure 3 on page 6. 8. In fast speed mode (RS = 0V): a. tPLH should be around 75ns and no greater than 150ns. 2. Configure the board for high speed mode by installing a jumper at J8. No jumpers should be installed at J5, J6, J7 and J9. b. tPHL should be around 80ns and no greater than 155ns. 3. Connect the oscilloscope to the evaluation board as indicated in Figure 2. d. tfall should be around 25ns and no less than 10ns or greater than 75ns. c. trise should be around 55ns and no less than 20ns or greater than 100ns. a. Connect the Channel 1 probe to the D pin by connecting the oscilloscope probe at TP3 on the evaluation board and the probe ground at TP1. 9. Move the jumper from J8 to J7 (selects medium driver edges by connecting the RS pin to ground through a 10kΩ resistor). Note: No jumpers should be installed at J5, J6, J8 and J9. b. Connect the Channel 2 probe to the CANH differential pin by connecting the oscilloscope probe at TP7 on the evaluation board and the probe ground at TP9. 10. The scope plot should look like the ones in Figure 4 on page 6. c. Connect the Channel 3 probe to the CANL differential pin by connecting the oscilloscope probe at TP8 on the evaluation board and the probe ground at TP11. d. Connect the Channel 4 probe to the R pin by connecting the oscilloscope probe at TP4 on the evaluation board and the probe ground at TP2. 4. Connect the function/signal generator at the BNC connector labeled D on the evaluation board as shown in Figure 2. Set the generator to output a 125kHz square wave, 0V to 3.3V amplitude, 50% duty cycle with a trise = tfall ≤6ns. Disable the generator output. 11. In medium speed mode (RS = 10kΩ): a. tPLH should be around 520ns and no greater than 850ns. b. tPHL should be around 460ns and no greater than 800ns. c. tr should be around 400ns and no less than 200ns or greater than 780ns. d. tf should be around 300ns and no less than 175ns or greater than 500ns. 12. Move the jumper from J7 to J6 (selects slow driver edges by connecting the RS pin to ground through a 50kΩ resistor). Note: No jumpers should be installed at J5, J7, J8 and J9. 5. Verify that a 60Ω resistor is installed at location R10 on the evaluation board. 13. The scope plot should look like the ones in Figure 5 on page 7. Calculating VDIFF and taking Measurements a. tPLH should be around 850ns and no greater than 1400ns. 1. Set the oscilloscope to 2.0µs/division. 2. Set channel CH1 of the oscilloscope to 5V/division. 3. Set CH2, CH3 and CH4 of the oscilloscope to 2V/division 4. Using the math function of the oscilloscope, set the math 1 selection to measure CH2 - CH3 and display the M1 trace on the oscilloscope screen. M1 = CH2 - CH3 = VDIFF = CANH - CANL. Submit Document Feedback 5 14. In slow speed mode (RS = 50kΩ): b. tPHL should be around 725ns and no greater than 1300ns. c. tr should be around 700ns and no less than 400ns or greater than 1400ns. d. tf should be around 650ns and no less than 300ns or greater than 1000ns. UG051.0 October 26, 2015 User Guide 051 ISL7202xSEHEVAL1Z Waveforms FIGURE 3. OSCILLOSCOPE PLOT (FAST SPEED) WAVEFORMS AND MEASUREMENTS FIGURE 4. OSCILLOSCOPE PLOT (MEDIUM SPEED) WAVEFORMS AND MEASUREMENTS Submit Document Feedback 6 UG051.0 October 26, 2015 User Guide 051 ISL7202xSEHEVAL1Z Waveforms (Continued) FIGURE 5. OSCILLOSCOPE PLOT (SLOW SPEED) WAVEFORMS AND MEASUREMENTS Submit Document Feedback 7 UG051.0 October 26, 2015 User Guide 051 ISL7202xSEHEVAL1Z Evaluation Board FIGURE 6. ISL72028SEHEVAL1Z EVALUATION BOARD Submit Document Feedback 8 UG051.0 October 26, 2015 TP6 R5 J4 3 1 2 J10 1 VCC J5 1 R6 J6 1 9 49.9K R7 R1 R8 0 R15 0 2 C2 LOOP TP1 330 R14 4 J1-6 6 CANL 5 J1-5 5 SPLIT 6 J1-4 7 J1-3 8 J1-2 9 J1-1 /SPLIT 0.1UF R ISL7202XSEH GND J1-7 CANH C6 CANL J1-8 3 7 330 VCC J1-9 2 RS R13 CANH TP10 1 8 60.4 GND 60.4 R12 RS R11 4 D C5 R2 3 D-SUB CAN BUS VCM 47PF 1 2 0.1UF C1 J8 1 DNP D VCC 10UF TP11 2 U1 R GND 1000PF DUT R16 TP2 0 TP12 C4 1000PF TP5 TP8 J11 R 1 1 2 1 2 0 2 4 5 3 C7 J9 0.047UF C8 15PF VCC TP9 CANL R17 3 TP4 DRAWN BY: FIGURE 7. SCHEMATIC DATE: ALAN ERZINGER ENGINEER: 04/28/2015 ALLAN ROBINSON DATE: User Guide 051 3.0V-3.6V C3 2 0 TP13 VCC 2 60.4 1 3 2 5 1 4 5 10K 4 D TP3 1 2 0 R10 D J7 CANH R9 2 TP7 3 100K 1 2 Submit Document Feedback ISL7202xSEHEVAL1Z Circuit Schematic UG051.0 October 26, 2015 User Guide 051 ISL7202XSEHEVAL1Z Bill of Materials QTY UNITS REFERENCE DESIGNATOR DESCRIPTION SEE LABEL - RENAME PWB-PCB, ISL7202XEVAL1Z, Rev A, ROHS BOARD MANUFACTURER PART NUMBER MFR 1 ea. 1 ea. C2 CAP, SMD, 0805, 0.1µF, 50V, 10%, X7R, ROHS KEMET C0805C104K5RACTU 1 ea. C1 CAP, SMD, 0805, 10µF, 25V, 10%, X5R, ROHS TDK C2012X5R1E106K 1 ea. D CONN - BNC, RECEPTACLE, TH, 4 POST, 50Ω, GOLDCONTACT, ROHS AMPHENOL 31-5329-52RFX 1 ea. TP13 CONN - MINI TEST PT, VERTICAL, RED, ROHS KEYSTONE 5000 4 ea. TP1, TP2, TP9, TP11 CONN - MINI TEST PT, VERTICAL, BLK, ROHS KEYSTONE 5001 2 ea. KEYSTONE 5002 4 ea. KEYSTONE 5004 1 ea. J1 3 ea. GND, VCC, VCM 1 ea. 1 TP7, TP8 CONN-MINI TEST PT, VERTICAL, WHITE, ROHS TP3, TP4, TP5, TP6 CONN-MINI TEST PT, VERTICAL, YEL, ROHS IMAGINEERING ISL7202XEVAL1ZREVAPCB INC 9 PIN MALE RIGHT ANGLE D-SUB CONNECTOR 5788792-1 TE CONNECTIVITY / AMP CONN - JACK, MINI BANANA, 0.175 PLUG, NICKEL/BRASS, ROHS KEYSTONE 575-4 U1 CAN BUS PART, 8P, FLAT-PACK, GOLD, ROHS INTERSIL ISL7202XSEHF/PROTO ea. J9 CONN - HEADER, 1X3, BREAKAWY 1X36, 2.54mm, ROHS BERG/FCI 68000-236HLF 4 ea. J5, J6, J7, J8 CONN - HEADER, 1X2, RETENTIVE, 2.54mm, 0.230X0.120, ROHS BERG/FCI 69190-202HLF 0 ea. R2, R9, R11, R12, R13, R14, R17 RESISTOR, SMD, 0805, DNP, TF, ROHS - - 4 ea. R1, R8, R15, R16 RES, SMD, 0805, 0Ω, 1/8W, TF, ROHS YAGEO RC0805JR-070RL 1 ea. R7 RES, SMD, 0805, 10kΩ, 1/8W, 1%, TF, ROHS VENKEL CR0805-8W-1002FT (PbFREE) 1 ea. R6 RES, SMD, 0805, 49.9kΩ, 1/8W, 1%, TF, ROHS PANASONIC ERJ-6ENF4992V 1 ea. R10 RES, SMD, 0805, 60.4Ω, 1/8W, 1%, TF, ROHS PANASONIC ERJ-6ENF60R4V 4 ea. Four Corners SCREW, 4-40X1/4in, PAN, SS, PHILLIPS - - 4 ea. Four Corners STANDOFF, 4-40X3/4in, F/F, HEX, ALUMINUM, ROHS KEYSTONE 2204 (.250 OD) 1 ea. Place assy in bag BAG, STATIC, 6X8, ZIP LOC, ROHS ULINE S-2262 0 ea. TP10, TP12 CONN-MINI TEST POINT, VERTICAL, ROHS KEYSTONE 5004 0 ea. 0 ea. J4, J10, J11 DO NOT POPULATE OR PURCHASE 0 ea. R5 DO NOT POPULATE OR PURCHASE 0 ea. CANH, CANL DO NOT POPULATE OR PURCHASE 1 ea. INTERSIL LABEL-DATE CODE C3, C4, C5, C6, C7, DO NOT POPULATE OR PURCHASE C8 AFFIX TO BACK OF LABEL-DATE CODE_LINE 1: YRWK/REV#, LINE 2: BOM NAME PCB Submit Document Feedback 10 UG051.0 October 26, 2015 User Guide 051 Board Layout FIGURE 8. TOP LAYER FIGURE 9. BOTTOM LAYER FIGURE 10. TOP LAYER SILK SCREEN Submit Document Feedback 11 UG051.0 October 26, 2015 User Guide 051 Typical Performance Curves Unless noted: VCC = 3.3V, D = 125kHz, Square Wave, 0 to VCC, 50% Duty Cycle, R 0 3 RS = GND, RD = 60Ω 2 1 CANH - CANL 0 4 R 0 3 RS = 10kΩ, RD = 60Ω 2 CANH - CANL 1 0 TIME (1µs/DIV) FIGURE 12. MEDIUM DRIVER AND RECEIVER WAVEFORMS 4 D 0 4 RS = GND, RD = 60Ω 3 H TO L, VCC = 3V 100 L TO H, VCC = 3V 80 TIME (ns) 0 R 120 DRIVER INPUT (V) RECEIVER OUTPUT (V) 0 TIME (1µs/DIV) FIGURE 11. FAST DRIVER AND RECEIVER WAVEFORMS DRIVER OUTPUT (V) 4 D DRIVER INPUT (V) 4 RECEIVER OUTPUT (V) 0 DRIVER INPUT (V) 4 D DRIVER OUTPUT (V) DRIVER OUTPUT (V) RECEIVER OUTPUT (V) tr = tf ≤6ns, TA = +25°C L TO H, VCC = 3.6V 60 H TO L, VCC = 3.6V 40 RS = 50kΩ, RD = 60Ω 2 CANH - CANL 20 1 SKEW, VCC = 3.6V 0 -55 0 TIME (1µs/DIV) FIGURE 13. SLOW DRIVER AND RECEIVER WAVEFORMS Submit Document Feedback 12 -35 -15 SKEW, VCC = 3V 5 25 45 65 85 105 125 TEMPERATURE (°C) FIGURE 14. TRANSMITTER PROPAGATION DELAY AND SKEW vs TEMPERATURE AT FAST SPEED UG051.0 October 26, 2015 User Guide 051 Typical Performance Curves Unless noted: VCC = 3.3V, D = 125kHz, Square Wave, 0 to VCC, 50% Duty Cycle, tr = tf ≤6ns, TA = +25°C (Continued) 800 1200 RS = 10kΩ, RD = 60Ω 700 L TO H, VCC = 3V RS = 10kΩ, RD = 60Ω L TO H, VCC = 3V 1000 600 TIME (ns) L TO H, VCC = 3.6V H TO L, VCC = 3.6V 400 H TO L, VCC = 3V TIME (ns) 800 500 300 L TO H, VCC = 3.6V H TO L, VCC = 3.6V 600 H TO L, VCC = 3V 400 200 SKEW, VCC = 3V SKEW, VCC = 3V 200 100 0 -55 SKEW, VCC = 3.6V 0 -55 -35 -15 5 SKEW, VCC = 3.6V -35 -15 5 25 45 65 TEMPERATURE (°C) 85 105 125 FIGURE 15. TRANSMITTER PROPAGATION DELAY AND SKEW vs TEMPERATURE AT MEDIUM SPEED 25 45 65 TEMPERATURE (°C) 85 105 125 FIGURE 16. TRANSMITTER PROPAGATION DELAY AND SKEW vs TEMPERATURE AT SLOW SPEED 60 600 RS = GND, RD = 60Ω RS = 10kΩ, RD = 60Ω 55 500 RISE, VCC = 3V 45 RISE, VCC = 3.6V 40 35 30 300 FALL, VCC = 3V FALL, VCC = 3.6V 200 FALL, VCC = 3V -35 -15 100 FALL, VCC = 3.6V 25 20 -55 RISE, VCC = 3.6V 400 RISE, VCC = 3V TIME (ns) TIME (ns) 50 5 25 45 65 85 105 125 TEMPERATURE (°C) FIGURE 17. TRANSMITTER RISE AND FALL TIMES vs TEMPERATURE AT FAST SPEED 0 -55 -35 -15 5 25 45 65 TEMPERATURE (°C) 85 105 125 FIGURE 18. TRANSMITTER RISE AND FALL TIMES vs TEMPERATURE AT MEDIUM SPEED Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that the document is current before proceeding. For information regarding Intersil Corporation and its products, see www.intersil.com Submit Document Feedback 13 UG051.0 October 26, 2015