Evaluates: MAX MAX14914 Evaluation Kit. General Description. Features. MAX14914 EV Kit Board Photo

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1 General Description The MAX494 evaluation kit (EV kit) provides a proven design to evaluate the MAX494, a configurable industrial digital output driver/digital input. The EV kit allows controlling of the MAX494 as either a digital output (in either High-Side or Push-Pull mode) or digital input with simple jumper settings. The EV kit must be powered from an external +4V power supply and can consume up to.a (minimum) when fully loaded. The MAX494EVKIT comes with a MAX494ATE+ installed in a 6-pin, 4x4mm TQFN-EP package. Features Robust Operation with Wide Range of Input Voltages and Load Conditions -40 C to +5 C Temperature Range On-Board LED Indication of Status and Fault Conditions Reverse Supply Voltage Protection Proven PCB Layout Fully Assembled and Tested Ordering Information appears at end of data sheet. MAX494 EV Kit Board Photo 9-877; Rev 0; /7

2 MAX494 EV Kit Block Diagram +4V PGND V5 V5 OV_VDD REGIN VDD GND FAULT DOI_L CLIM MAX494 DI_EN DOI PGND IN PP Quick Start Required Equipment MAX494 EV kit +4V power supply Voltmeter Function generator (optional) Oscilloscope (optional) Procedure The EV kit is fully assembled and tested. Follow the steps below to verify board operation: ) Verify that all jumpers are in their default positions for the digital output (DO), high-side operation (Table ). ) Power up the EV kit with +4V from an external power supply. Apply +4V to the TP6 banana jack and 0V to the TP5 banana jack. ) Use TP (DOI) and TP (PGND) to check that the DOI level is high-z by voltmeter or oscilloscope. 4) Move the J4 shunt to - position (IN = high). Observe that the DOI level becomes high and DS LED lights up. 5) Move the J4 shunt back to the - position (IN = low). 6) Move the J5 shunt to - position (PP = high, enable Push-Pull mode). 7) Repeat steps 4 and 5 to verify that the DOI output and check that the DS LED follows the IN settings. 8) Move J shunt to - position (DI_EN = high, enable DI mode). Note that the shunts position of J4 is ignored. 9) Apply static 4V between TP (DOI) and TP (PGND). 0) Observe that the DS LED follows the level of the DOI input. Maxim Integrated

3 Table. MAX494 Board Shunt Positions and Settings HEADER J J J J4 J5 JMP *Default configuration SHUNT POSITION DESCIPTION -* Connected V L to V 5 and set input logic level to 5V Open Connect an external supply between TP5 (V L ) and TP4 (GND) to provide the user-defined input logic level from.5v to 5.5V -* Input to the internal 5V regulator (REGIN) is from V DD source - Bypass the external voltage regulator and apply an external 5V supply to TP to power up the device. Open Provide an external 6~40V supply to J. -* Set DI_EN low to enable digital output (DO) operation - Set DI_EN high to enable digital input (DI) operation Open DO operation is enabled by internal weak pulldown resistor -* Set IN low and DOI three-state/low - Set IN high and DOI high Open Provide square wave from function generator to TP0 -* Set PP low and DO High-Side mode or DI Type, mode in conjunction with J setting - Set PP high and DO Push-Pull mode or DI Type mode in conjunction with J setting Open Set PP low and DO High-Side mode or DI Type, Mode by internal pulldown resistor in conjunction with J setting -* Select C LIM = 5k and set current limit to ~900mA - Select C LIM = 7k and set current limit to ~.6A -4 Select C LIM = 0k and set current limit to ~00mA Open Current limit internally set to ~.A Detailed Description of Hardware The MAX494 EV kit allows the user to evaluate all the features and operational modes of the MAX494 digital High-Side/Push-Pull driver. It also can be configured as a digital input level translator. External Power Supply/Supplies The EV kit is powered from a single power supply and accepts a wide range of input voltages, from 0V to 40V. The power is applied through two banana jacks, TP6 (+) and TP5 (-). The MAX494 can drive up to.5a of current to the external load. The load is connected to the EV kit through the J7 terminal block. The 4V field supply is reverse-voltage protected and tolerant up to 60V supply spikes. Reverse-voltage protection is achieved in the Q transistor. Refer to the MAX494 EV kit schematic. The MAX494 is immune to ±.0kV./50µs surge pulses applied between the DOI and PGND load lines. A power to the 5V internal regulator can be provided directly from either the V DD pin or from an external supply; selectable at the J header. Refer to Table for details. If a logic interface of less than 5V is used from a microcontroller (.V, for example), a secondary power supply is needed to power up the V L pin through the TP5 test point with the correct voltage. In this case, the J header should be left open. Maxim Integrated

4 Digital Output Operation The user can manually control the IN input either by shunt position on the J4 header (refer to Table ) or by applying square wave to the TP0 from an external function generator or microcontroller. The J5 shunt sets either the High-Side or Push-Pull mode of operation. The High-Side mode is mostly used with the high current-resistive and inductive loads, while Push-Pull is often used for highspeed resistive and capacitive loads. The MAX494 supports up to a 00kHz switching frequency. When using high-frequency push-pull mode switching, be aware that the 0nF (C8) capacitor charging/discharging current generates very high power dissipation in the MAX494. Digital Input Operation When the DI_EN is high (J shunt in position -) the MAX494 works as digital input. In this mode, the input signal applied between the DOI pin (J7. or TP) and PGND (J7. or TP) is level-shifted and inverted to the output on TP8 (DOI_L). Note that the DOI_L is an open-drain output and needs a pullup to the V L voltage level. DOI_L is logically inverted to the DOI input. So, the LED DS reflects the real logic state of the DOI input. In digital input mode, the MAX494 supports both IEC Type / as well as Type inputs. Set J5/PP logic input high for Type input characteristics. Fault Indication The fault LED (DS) turns on when the driver exceeds 70 C or a loss of ground is detected. The DOI output is three-stated and the device will not operate until the fault condition disappears. Ordering Information PART MAX494EVKIT# #Denotes RoHS compliant. TYPE EV Kit Maxim Integrated 4

5 MAX494 EV Kit Bill of Materials ITEM REF_DES /DNP QTY MFG PART # MANUFACTURER VALUE DESCRIPTION COMMENTS C - GRMER7J06KA MURATA 0UF C, C - C5, C7 - C060C05K4RAC; GRM88R7C05KA; C608X7RC05K; EMK07B705KA GCJ88R7H04KA; GCM88R7H04K; CGAEX7RH04K080AE KEMET/MURATA/TDK/ TAIYO YUDEN MURATA; TDK 4 C8 - GRM95CH0JA0 MURATA 0.0UF 5 D - MMZVTG ON SEMICONDUCTOR V 6 D - SMBJ40A BOURNS 40V 7 DS - LTST-C9KRKT LITE-ON ELECTRONICS INC. LTST-C9KRKT 8 DS - LGL9K-GJ-4-Z OSRAM LGL9K-GJ-4-Z 9 J - PCC0SAAN SULLINS PCC0SAAN 0 J-J5-4 PCC0SAAN SULLINS PCC0SAAN J7 - ED555/DS ON-SHORE TECHNOLOGY INC ED555/DS JMP - PEC04SAAN SULLINS ELECTRONICS CORP. PEC04SAAN Q - DMP60LE DIODES INCORPORATED DMP60LE 4 R - CRCW0407K0FK VISHAY DALE 7K 5 R - ERJ-RKF50 PANASONIC 5K 6 R - 7 R4 - MCR0EZPFX00; ERJ-EKF00 CRCW0400KFK; 9C040A0FLHF ROHM; PANASONIC VISHAY DALE; YAGEO PHYCOMP 8 R5 - RC005F80 SAMSUNG ELECTRONICS 8K 9 R6, R7 - CRCW060K0FK VISHAY DALE.K 0 R8-R0 - CRCW040K00FK; RC040FR-07KL VISHAY DALE; YAGEO PHICOMP SU-SU5-5 STC0SYAN SULLINS ELECTRONICS CORP. STC0SYAN UF 0.UF 0K 0K K CAPACITOR; SMT (0); CERAMIC CHIP; 0UF; 6V; TOL = 0%; TG = -55 C TO +5 C; TC = X7R CAPACITOR; SMT (060); CERAMIC CHIP;UF; 6V; TOL = 0%; MODEL = ; TG = -55 C TO +5 C; TC = X7R CAPACITOR; SMT (060); CERAMIC CHIP; 0.UF; 50V; TOL = 0%; TG = -55 C TO +5 C; TC = X7R; AUTO CAPACITOR; SMT; 0805; CERAMIC; 0.0uF; 50V; 5%; COG; -55 C to + 5 C; 0?0ppm/?C from -55 C to +5 C DIODE; ZNR; SMT (SOD-); PIV = V; IZ = 0.005A DIODE; TVS; SMB (DO-4AA); VRM = 40V; IPP = 9.A DIODE; LED; SMD LED; RED; SMT (060); VF = V; IF = 0.0A DIODE; LED; SMARTLED; GREEN; SMT; PIV=.7V; IF=0.0A CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT THROUGH; PINS; -65 C TO +5 C CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT THROUGH; PINS; -65 C TO +5 C CONNECTOR; FEMALE; THROUGH HOLE; TERMINAL BLOCK; RIGHT ANGLE; PINS CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT; 4PINS TRAN; 60V P-CHANNEL ENHANCEMENT MODE MOSFET; PCH; SOT-4; PD-(W); I-(-7A); V-(-60V) RESISTOR, 040, 7KΩ, %, 00PPM, 0.065W, THICK FILM RESISTOR; 040; 5KΩ; %; 00PPM; 0.W; THICK FILM RESISTOR; 060; 0KΩ; %; 00PPM; 0.0W; THICK FILM RESISTOR; 040; 0KΩ; %; 00PPM; 0.06W; THICK FILM RESISTOR; 040; 8KΩ; %; 00PPM; 0.06W; THICK FILM RESISTOR, 060,.KΩ, %, 00PPM, 0.0W, THICK FILM RESISTOR; 040; K; %; 00PPM; 0.065W; THICK FILM TEST POINT; JUMPER; STR; TOTAL LENGTH = 0.56IN; BLACK; INSULATION = PBT CONTACT = PHOSPHOR BRONZE; COPPER PLATED TIN OVERALL TP, TP9-500 KEYSTONE N/A TESTPOINT WITH.80MM HOLE DIA, RED, MULTIPURPOSE; TP, TP4, TP - 50 KEYSTONE N/A 4 TP, TP5-TP8, TP0, TP, TP KEYSTONE N/A 5 TP - 50 KEYSTONE N/A 6 TP5, TP KEYSTONE U - MAX494ATE+ MAXIM MAX494ATE+ 8 J6, J8-J0 4 EVKIT_STANDOFF_4-40_/8? EVKIT_STANDOFF_ 4-40_/8 9 C4 DNP 0 GRMER7J06KA MURATA 0UF 0 C6 DNP 0 C0X7SA05K5; GRJBC7A05KE TDK/MURATA D DNP 0 SMBJ40CA BOURNS 40V R DNP 0 CRCW080550KFK VISHAY DALE 50K UF TEST POINT; PIN DIA = 0.5IN; TOTAL LENGTH = 0.445IN; BOARD HOLE=0.06IN; BLACK; PHOSPHOR BRONZE WIRE SILVER PLATE FINISH; TEST POINT; PIN DIA = 0.IN; TOTAL LENGTH = 0.IN; BOARD HOLE =0.04IN; ORANGE; PHOSPHOR BRONZE WIRE SILVER PLATE FINISH; TEST POINT; PIN DIA = 0.5IN; TOTAL LENGTH = 0.445IN; BOARD HOLE = 0.06IN; ORANGE; PHOSPHOR BRONZE WIRE SILVER PLATE FINISH; CONNECTOR; FEMALE; PANELMOUNT; NON-INSULATED RECESSED HEAD BANANA JACK; STRAIGHT THROUGH; PIN EVKIT PART - IC; SWITCH; HIGH-SIDE SWITCH WITH SETTABLE CURRENT LIMIT AND PUSH-PULL DRIVER OPTION; NO. OF LEADS-(6); TQFN6-EP KIT; ASSY-STANDOFF /8IN; PC. STANDOFF/FEM/HEX/4-40IN/(/8IN)/NYLON; PC. SCREW/SLOT/PAN/4-40IN/(/8IN)/NYLON CAPACITOR; SMT (0); CERAMIC CHIP; 0UF; 6V; TOL = 0%; TG = -55 C TO +5 C; TC = X7R CAPACITOR; SMT (0805); CERAMIC CHIP; UF; 00V; TOL = 0%; TG=-55 C TO +5 C; TC = X7S DIODE; TVS; SMB (DO-4AA); VRM=40V; IPP = 9.A RESISTOR; 0805; 50K; %; 00PPM; 0.5W; THICK FILM PCB - MAX494 MAXIM PCB PCB Board:MAX494 EVALUATION KIT TOTAL 55 Maxim Integrated 5

6 Maxim Integrated 6 MAX494 Evaluation Kit MAX494 EV Kit Schematics PGND +4V GND VDD PGND DOI 7K 0K K DMP60LE K 0.0UF 8K 0K 0UF 0.UF 50K.K.K 40V V 0UF UF 0.UF UF K 5K MAX494ATE+ UF 40V R R0 TP5 R9 C7 TP9 JMP Q U J TP4 TP8 J7 TP R TP7 DS TP TP0 R5 D C4 C C6 TP C8 R DS J5 J4 R6 TP R7 R4 TP6 TP6 TP TP5 D C5 TP4 R8 TP R C D C J J V5 V5 7 C 0 9 K A A 4 A K FAULT VDD VDD DOI DOI EP OV_VDD CLIM DI_EN PP IN DOI_L REGIN V5 PGND GND D S G IN IN

7 MAX494 EV Kit PCB Layouts MAX494 EV Kit Top Silkscreen MAX494 EV Kit Top Maxim Integrated 7

8 MAX494 EV Kit PCB Layouts (continued) MAX494 EV Kit Level GND MAX494 EV Kit Level Power Maxim Integrated 8

9 MAX494 EV Kit PCB Layouts (continued) MAX494 EV Kit Bottom MAX494 EV Kit Bottom Silkscreen Maxim Integrated 9

10 Revision History REVISION NUMBER REVISION DATE DESCRIPTION PAGES CHANGED 0 /7 Initial release For pricing, delivery, and ordering information, please contact Maxim Direct at , or visit Maxim Integrated s website at. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. 07 Maxim Integrated Products, Inc. 0