PRELIMINARY Click here to ask about the production status of specific part numbers. Evaluates: MAX33014E, MAX33015E Shield MAX33015E General Description Quick Start The MAX33015E Shield is a fully assembled and tested Required Equipment Printed Circuit Board (PCB) that demonstrates the func- MAX33015E Shield tionality of the MAX33015E, a high 65V fault-protection, 5V, 500mA DC power supply 25V common-mode input range, 45kV ESD Human Body Model (HBM) controller area network (CAN) trans- Signal/function generator that can generate a ceiver. The Mbed/Arduino shield can also be used as a 2.5MHz square wave signal standalone evaluation board. The shield features a digital Oscilloscope isolator, which is used as a level translator between the CAN transceiver and the controller interface. Procedure 1) Place the MAX33015E Shield on a nonconductive Features surface to ensure nothing on the PCB gets shorted Easy Evaluation of the MAX33015E to the workspace. I/O Interface Compatibility from 1.71V to 5.5V 2) Set all jumpers in their default position as shown in Table 1. Proven PCB Layout 3) With the +5V power supply disabled, connect the Mbed/Arduino Platform Compatible positive terminal to the VDD EXT, VL EXT, and Fully Assembled and Tested IOREF test points. Connect the negative terminal to the GND test point. 4) Connect the positive terminal of the function genera- tor to the D1 pin of JU8 and negative terminal to any GND test points on the shield. Ordering Information appears at end of data sheet. 5) Set the function generator to output a 2.5MHz square wave between 0V and 5V, and then enable the function generator output. 6) Turn on the +5V DC power Supply. 7) Connect an oscilloscope probe on the RXD test point and verify the RXD output signal matches the TXD input signal. 319-100687 Rev 1 4/21PRELIMINARY Evaluates: MAX33014E, MAX33015E Shield MAX33015E Table 1. Table Jumper Settings JUMPER SHUNT POSITION DESCRIPTION 1-2 Connects 120.8 between CANH and CANL JU CANH and JU 2-3* Connects 60.4 between CANH and CANL CANL Open No load is connected between CANH and CANL 1-2 VDD is shorted to 5V supply JU1 2-3* VDD is shorted to VDD EXT supply Open VDD is open JU8 - Refer to TXD and RXD configuration 1-2 Connects STBY to D7 of JU8 JU9 JU10 Open* Disconnects STBY from D7 of JU8 1-2* Connects TVS diode to CANL JU10 JU12 Open Disconnects TVS diode to CANL 1-2* Connects STBY to ground 1-3 Connects STBY to a 26.1K resistor to ground JU12 1-4 Connects STBY to the U2s OUTB2 pin used for Arduino/Mbed interface Open Internal pullup for standby mode 1-2* Connects 15pF capacitor between receiver output and ground JU5 Open Disconnects 15pF capacitor between receiver output and ground 1-2* Connects TVS diode to CANH JU20 Open Disconnects TVS diode from CANH 1-2 LPBK is shorted to VL JU15 2-3 LPBK is shorted to GND Open* LPBK is open 1-2 FAULT is shorted to D8 pin of JU8 JU7 Open* FAULT is open 1-2 LPBK is shorted to D6 pin of JU8 JU16 Open* LPBK is open 1-2 CANH and CANL are shorted JU13 Open* CANH and CANL are not shorted 1-2 FAULT connected to IOREF with 100K pullup JU6 2-3* FAULT connected to VL with 100K pullup Open FAULT is open 1-2 VL is shorted to 5V supply JU14 2-3* VL is shorted to VDD EXT supply Open VL is open 1-2* TXD U1 is connected to TXD through MAX14131 JU2 Open Can apply signal directly on TXD U1 1-2* LPBK U1 is connected to LPBK through MAX14131 JU3 Open Can apply signal directly on LPBK U1 1-2* RXD U1 is connected to RXD through MAX14131 JU4 Open Can observe signal directly on RXD U1 Note: * indicates default jumper state. Maxim Integrated 2 www.maximintegrated.com