MAX3160E Evaluation Kit. Evaluates: MAX3160E. Features

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1 9-076; Rev 0; 4/07 MAX60E Evaluation Kit General Description The MAX60E evaluation kit (EV kit) circuit demonstrates the RS-/RS-485/RS-4 multiprotocol transceivers using the MAX60E IC. The circuit can be configured to operate as a dual transceiver in RS- mode or as a single transceiver in RS-485/RS-4 mode. The MAX60E RS- data rates can reach Mbps, while RS-485/RS-4 data rates can reach 0Mbps. The configurable slew-rate limiting feature reduces data rates for either protocol to achieve reduced EMI. In RS-485/RS-4 mode, the EV kit demonstrates fullduplex or half-duplex communication. The MAX60E drivers feature short-circuit and thermal protection as well as fail-safe circuitry for open, shorted, or unconnected RS-485/RS-4 receiver inputs. The MAX60E EV kit operates from a single V to 5.5VDC supply capable of providing 00mA. Component List DESIGNATION QTY PART DESCRIPTION C, C, C, C5 4 C4 ±0%, 0V X5R ceramic capacitors (060) Murata GRM88R6A474K 0.µF ±0%, 0V X5R ceramic capacitor (040) Murata GRM55R6A04K Features V to 5.5V Single-Supply Operation Configurable Multiprotocol Operation Tx/Rx RS- Transceivers Single RS-485/RS-4 Transceiver 0Mbps RS-485/RS-4 Data Rates and Mbps RS- Data Rates Configurable RS-/RS-485 Transmitter Slew Rates Configurable Full-Duplex/Half-Duplex RS-485/ RS-4 Operation Fully Assembled and Tested Ordering Information PART TEMP RANGE IC PACKAGE MAX60EEVKIT+ 0 C to +70 C* 0 SSOP +Denotes a lead-free and RoHS-compliant EV kit. *This limited temperature range applies to the EV kit PCB only. The MAX60E IC temperature range is -40 C to +85 C. C6 0µF ±0%, 0V X5R ceramic capacitor (0805) Murata GRMBR6A06K J DB9 male right-angle connector JU JU4, JU9, JU0 6 -pin headers JU5 JU8 4 -pin headers R R4 4 00kΩ ±5% resistors (060) R5, R6 0Ω ±% resistors (06) U MAX60EEAP+ (0-pin SSOP) 0 Shunts (JU JU0) PCB: MAX60E Evaluation Kit+ Component Supplier SUPPLIER PHONE WEBSITE Murata Mfg. Co., Ltd Note: Indicate that you are using the MAX60E when contacting this component supplier. Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at , or visit Maxim s website at

2 MAX60E Evaluation Kit Quick Start Recommended Equipment.V, 0.5A DC power supply Logic function generator Oscilloscope Procedure The MAX60E EV kit is fully assembled and tested. Follow the steps below to verify board operation. Caution: Do not turn on the power supply until all connections are completed. ) Verify that shunts are installed across pins - of jumpers JU5, JU6, JU7, and JU8 (data communications equipment (DCE) mode). ) Verify that a shunt is installed on jumpers JU (RS- mode) and JU4 (full-duplex mode). ) Verify that shunts are not installed on jumpers JU (MAX60E enabled), JU (fast mode), and JU9 and JU0 (RS-485/RS-4 differential I/O not terminated). 4) Set the DC power supply output to.v and disable the output. 5) Set the logic function generator to a.vp-p, 500kHz,.65V DC offset square wave and disable the output. Terminate the function generator as needed. 6) Connect the DC power-supply positive output to the pad on the EV kit. 7) Connect the supply ground to the pad next to on the EV kit. 8) Connect the logic function generator output to the DI/TIN PCB pad and connect ground to the PCB pad. 9) Enable the power-supply output and then the function generator output. 0) Use the oscilloscope to measure the transmitter output Z(B)/TOUT at pin of jumper JU5. Verify that the waveform is a 500kHz square wave and is approximately ±5V P-P. Detailed Description The MAX60E EV kit demonstrates the MAX60E RS-/RS-485/RS-4 multiprotocol transceiver IC. The EV kit operates from a V to 5.5VDC source capable of supplying 00mA. The EV kit features jumpers to configure the communication protocol to RS- operation or RS-485/RS-4 operation. In RS- mode operation, the MAX60E communicates at data rates up to Mbps. In RS-485/ RS-4 mode operation, the differential driver and receiver operate in full-duplex or half-duplex mode and communicate at data rates up to 0Mbps. The MAX60E receiver represents a /8 unit load on the RS-485/RS-4 bus. Resistors R5 and R6 provide a configurable termination for the RS-485/RS-4 bus. PCB pads and DB9 connector J are available for interfacing with an RS-/RS-485/RS-4 serial line. See Table 5 and Figures,, and for the respective signal pins or pads. Jumper Selection The MAX60E EV kit utilizes several jumpers to reconfigure circuit features and functionality: IC enable, slew-rate selection, communication-protocol selection, full-duplex/ half-duplex communication, DTE/DCE connections, and RS-485/RS-4 differential I/O termination. Enable The MAX60E EV kit features jumper JU to enable the MAX60E or place the IC in shutdown mode, thus reducing quiescent current. A SHDN PCB pad is also provided for the shutdown signal to interface with an external controller. See Table for configuring jumper JU. Table. MAX60E Enable (Jumper JU) SHUNT POSITION Installed Slew-Rate Selection Jumper JU on the EV kit configures the MAX60E communication slew-rate mode. Slew-rate limited-mode operation minimizes EMI radiation, while fast-mode operation optimizes maximum data rates for either protocol. See Table for configuring jumper JU and refer to the MAX60E IC data sheet for more information on slew-rate configuration. Table. Slew Rate (Jumper JU) SHUNT POSITION Installed SHDN PIN Connected to C onnected to V C C thr oug h r esi stor R FAST PIN Connected to Connected to through resistor R EV KIT FUNCTION MAX60E shutdown MAX60E enabled EV KIT FUNCTION Slew-rate limited mode. RS-/RS-485/RS-4 50kbps maximum data rate Fast mode. RS- Mbps maximum data rate; RS-485/RS-4 0Mbps maximum data rate

3 MAX60E Evaluation Kit RS-/RS-485/RS-4 Protocol Selection EV kit jumper JU sets the communication protocol to either RS- or RS-485/RS-4. See Table for configuring jumper JU. For additional protocol-configuration information, refer to the Functional Diagrams section of the MAX60E IC data sheet. RS-485/RS-4 Communication Mode EV kit jumper JU4 configures the MAX60E IC s RS-485/ RS-4 communication mode to full duplex or half duplex. To receive RS-485 data, disable the RS-485 outputs by driving the DE485/TIN PCB pad low. See Table 4 to configure jumper JU4 for the desired mode of communication. DTE/DCE Connections The EV kit features jumpers JU5, JU6, JU7, and JU8 to configure the RS- connector J as a data terminal equipment (DTE) or as a data communications equipment (DCE) connector. See Table 5 for configuring the respective jumpers for DTE or DCE connection mode. Table. RS-/RS-485/RS-4 Protocol (Jumper JU) SHUNT POSITION RS-485/RS- PIN EV KIT FUNCTION Installed Connected to RS- mode Connected to through resistor R RS-485/RS-4 mode RS-485/RS-4 Termination EV kit jumpers JU9 and JU0 configure the RS-485/RS- 4 termination. JU9 sets the input termination with resistor R6. JU0 sets the output termination with resistor R5. See Table 6 for the RS-485/RS-4 termination options. EV Kit I/O Connections The MAX60E EV kit features PCB pads for interfacing with logic signals. PCB pads and a DB9 connector (J) are available to interface with an RS-/RS-485/RS-4 serial line. See Figures or for RS- or RS-485/ RS-4 transceiver functional modes. The RS-/RS-485/RS-4 input range is ±5V and the output range is ±5V. Table 4. Communication Mode (Jumper JU4) SHUNT POSITION HDPLX PIN RS-485/RS-4 MODE Installed Connected to Full-duplex mode Connected to through resistor R4 Half-duplex mode Table 5. DTE/DCE Modes (Jumpers JU5, JU6, JU7, and JU8) SHUNT POSITION JU5 JU6 JU7 JU8 J PIN J PIN J PIN 7 J PIN 8 J CONNECTION MODE - B/RIN Z(B)/TOUT Y(A)/TOUT A/RIN DCE - Z(B)/TOUT B/RIN A/RIN Y(A)/TOUT DTE Table 6. RS-485/RS-4 Termination (Jumpers JU9 and JU0) SHUNT POSITION Installed JU9 RS-485 INPUT A/RIN connected to B/RIN through resistor R6 JU0 RS-485 OUTPUT Y(A)/TOUT connected to Z(B)/TOUT through resistor R5 TERMINATION VALUE 0Ω termination Not connected Not connected

4 MAX60E Evaluation Kit LOGIC LEVEL I/O DI/TIN TIN DE485/TIN TIN ROUT ROUT RO/ROUT ROUT Figure. MAX60E EV Kit I/O Function in RS- Mode LOGIC LEVEL I/O T T MAX60EEVKIT+ U Z(B)/TOUT J* Y(A)/TOUT B/RIN R A/RIN R *SEE TABLE 5 FOR J PINOUT MAX60EEVKIT+ RS- LEVEL I/O TOUT TOUT RIN RIN RS-485/RS-4 LEVEL I/O DE485 DE485/TIN U DI DI/TIN D Z(B)/TOUT Z Y Y(A)/TOUT RO RO/ROUT R B/RIN B A A/RIN Figure. MAX60E EV Kit I/O Function in RS-485/RS-4 Mode (Full Duplex) 4

5 MAX60E Evaluation Kit C6 0µF C DI/TIN DE485/TIN ROUT LOGIC LEVEL C4 0.µF V+ C+ C- V- V CC C+ C- DI/TIN DE485/TIN ROUT U MAX60E Z(B)/TOUT Y(A)/TOUT B/RIN C C C5 JU0 JU9 R5 0Ω % Y(A)/TOUT R6 0Ω % RS-485/RS- LEVEL Z(B)/TOUT Z(B)/TOUT Y(A)/TOUT B/RIN B/RIN R0/ROUT 8 RO/ROUT SHDN 9 FAST 0 RS-485/RS- A/RIN HDPLX A/RIN J RS-485/RS- A/RIN Z(B)/TOUT SHDN JU JU R 00kΩ JU R 00kΩ JU4 R 00kΩ Y(A)/TOUT R4 00kΩ A/RIN JU7 JU JU5 JU6 JU5 - JU8 DCE: - DTE: - B/RIN Figure. MAX60E EV Kit Schematic 5

6 MAX60E Evaluation Kit Figure 4. MAX60E EV Kit Component Placement Guide Component Side Figure 5. MAX60E EV Kit PCB Layout Component Side 6

7 MAX60E Evaluation Kit Figure 6. MAX60E 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. Maxim Integrated Products, 0 San Gabriel Drive, Sunnyvale, CA Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc. Janet /freed