MAX3397EEVKIT+

19-0972; Rev 0; 8/07 MAX3397E Evaluation Kit The MAX3397E evaluation kit (EV kit) is a fully assembled and tested printed-circuit board (PCB) that demonstrates the capabilities of the MAX3397E ESDprotected, dual bidirectional low-level translator. The MAX3397E allows data translation in either direction (VL ↔ VCC) on any single data line. The MAX3397E EV kit accepts VL from +1.2V to +5.5V and VCC from +1.65V to +5.5V. The EV kit comes with the MAX3397EELA+ installed. Features ♦ Jumper-Selectable Enable/Shutdown Configuration ♦ +1.2V to +5.5V Supply Range for VL ♦ +1.65V to +5.5V Supply Range for VCC ♦ Proven PCB Layout ♦ Fully Assembled and Tested Component List DESIGNATION QTY DESCRIPTION C1, C2 2 0.1µF ±10%, 16V X7R ceramic capacitors (0603) Murata GRM188R71C104K C3 1 1µF ±10%, 16V X7R ceramic capacitor (0603) Murata GRM188R71C105K JU1 1 3-pin header R1 1 10kΩ ±5% resistor (0603) U1 1 MAX3397EELA+ (8-pin µDFN, 2mm x 2mm) — 1 PCB: MAX3397E Evaluation Kit+ Ordering Information PART TYPE MAX3397EEVKIT+ EV Kit +Denotes lead-free and RoHS-compliant. Component Supplier SUPPLIER PHONE Murata Mfg. Co., Ltd. 770-436-1300 WEBSITE www.murata.com Note: Indicate that you are using the MAX3397E when contacting this component supplier. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 Evaluates: MAX3397E General Description Evaluates: MAX3397E MAX3397E Evaluation Kit Quick Start Detailed Description of Hardware Recommended Equipment The MAX3397E is an ESD-protected, dual bidirectional low-level translator. The MAX3397E EV kit board provides a proven layout for evaluating the MAX3397E. The EV kit comes with a MAX3397EELA+ installed. Before beginning, the following equipment is needed: • One +5V DC power supply • One +3.3V DC power supply • One function generator • One oscilloscope Procedure The MAX3397E EV kit is fully assembled and tested. Follow the steps below to verify board operation. Caution: Do not turn on power supplies until all connections are completed. 1) Turn off the +5V DC and +3.3V DC power supplies. 2) Turn off the function generator. 3) Make sure the shunt is on pin 1-2 of JU1. 4) Connect the positive (+) terminal of the +5V DC power supply to the VCC pad and connect the negative (-) terminal to the adjacent GND pad. 5) Connect the positive (+) terminal of the +3.3V DC power supply to the VL pad and connect the negative (-) terminal to the adjacent GND pad. 6) Connect the positive (+) terminal of the function generator to I/OVCC1 pad of the MAX3397E EV kit. Connect the negative (-) terminal of the DC signal source to the GND pad. 7) Turn on the +5V DC and +3.3V DC power supplies. 8) Turn on the function generator. 9) Set the function generator to a 5VP-P, 1MHz, 2.5V DC offset square wave. Enable/Shutdown Control Place the shunt on pin 1-2 of JU1 (as shown in Table 1) to drive the EN pin of the MAX3397E high and to enable the device. Place the shunt on pin 2-3 of JU1 to drive the EN pin of the MAX3397E low and to put the device in shutdown state. Table 1. Jumper JU1 Configuration JUMPER JU1 SHUNT POSITION DESCRIPTION 1-2* Enable 2-3 Shutdown *Default position. Power Supply The MAX3397E accepts VL from +1.2V to +5.5V and VCC from +1.65V to +5.5V. The voltage on VL must be less than or equal to the voltage on VCC. When V L is connected and V CC is disconnected or connected to ground, the device enters shutdown mode. In this mode, I/O VL can still be driven without damage to the device; however, data does not translate from I/O VL to I/O VCC. If VCC falls more than +0.8V (typ) below VL, the device disconnects the pullup resistors at I/O VL and I/O VCC. To achieve the lowest possible supply current from VL when VCC is disconnected, it is recommended that the voltage at the VCC supply input be approximately equal to GND. 10) Use the oscilloscope to measure the I/O VL1 output at pin 5. Verify that the waveform is a 1MHz square wave and is approximately 3.3 VP-P with 1.625V DC offset. 2 _______________________________________________________________________________________ MAX3397E Evaluation Kit I/O VCC1 I/O VCC2 8 I/OVCC1 U1 2 GND GND MAX3397E GND Evaluates: MAX3397E 1 I/OVCC2 VCC 7 VCC C2 0.1μF C3 1μF R1 10kΩ 1 3 VL C1 0.1μF I/OVL2 VL EN 6 JU1 2 3 4 I/O VL2 GND I/O VL1 5 I/OVL1 GND Figure 1. MAX3397E EV Kit Schematic Figure 2. MAX3397E EV Kit Component Placement Guide— Component Side Figure 3. MAX3397E EV Kit PCB Layout—Component Side _______________________________________________________________________________________ 3 Evaluates: MAX3397E MAX3397E Evaluation Kit Figure 4. MAX3397E EV Kit PCB Layout—Solder Side 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. 4 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.