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Quick Start

Required Equipment

Before beginning, the following equipment is needed:

• MAX13485E EV kit

• 5V DC power supply

• Two digital voltmeters

Procedure

The MAX13485E EV kit is fully assembled and tested.

Follow the steps below to verify board operation:

1) Verify that the jumpers are in their default position,

as shown in Table 1. JU1 connects the 120Ω load

resistor between A and B.

2) For testing purposes, remove the shunt from JU1.

3) Connect the positive terminal of the 5V supply to

VCC and the negative terminal of the supply to GND.

4) Apply 5V on the RE and DE pads. This is a logic to

RS-485 DC test.

5) Apply 5V on the DI pad and check that A-B is posi-

tive.

6) Apply 0V on the DI pad and check that B-A is posi-

tive.

7) Apply 0V on RE and DE. Apply 5V on A and 0V on B.

This is an RS-485 to logic DC test.

8) Check the state of RO using a voltmeter. RO should

be approximately 5V.

General Description

The MAX13485E evaluation kit (EV kit) provides a

proven design to evaluate the MAX13485E half-duplex

RS-485/RS-422 transceivers in an 8-pin µDFN package.

The MAX13485E EV kit PCB comes with a

MAX13485EELA+ installed. Contact the factory for free

samples of the pin-compatible MAX13486EELA+ to

evaluate this device.

Features

♦ Lead(Pb)-Free and RoHS Compliant

♦ Proven PCB Layout

♦ Fully Assembled and Tested

Evaluates: MAX13485E/MAX13486E

MAX13485E Evaluation Kit

________________________________________________________________

Maxim Integrated Products

19-4380; Rev 0; 12/08

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.

Ordering Information

PART TYPE

MAX13485EEVKIT+ EV Kit

Denotes lead(Pb)-free and RoHS compliant.

Component List

DESIGNATION QTY DESCRIPTION

C1 1

0.1µF ±10%, 16V X7R ceramic

capacitor (0603)

TDK C1608X7R1C104K

C2 1

1µF ±20%, 10V X5R ceramic

capacitor (0603)

TDK C1608X5R1A105M

J1 1 2-position terminal block

JU1, JU2, JU3 3 2-pin headers

R1 1 120Ω ±5% resistor (1206)

R2, R3, R4, R5 4 Not installed, resistors (0603)

TP1, TP2 2 Not installed, test points

U1 1

RS-485 half-duplex transceiver

(8 µDFN)

Maxim MAX13485EELA+

— 3 Shunts

— 1 PCB: MAX13485E Evaluation Kit+

SUPPLIER PHONE WEBSITE

TDK Corp. 847-803-6100 www.component.tdk.com

Component Supplier

Note: Indicate that you are using the MAX13485E when contacting

this component supplier.

Summary of content (5 pages)

PAGE 1
9-4380; Rev 0; 12/08 MAX13485E Evaluation Kit The MAX13485E evaluation kit (EV kit) provides a proven design to evaluate the MAX13485E half-duplex RS-485/RS-422 transceivers in an 8-pin µDFN package. The MAX13485E EV kit PCB comes with a MAX13485EELA+ installed. Contact the factory for free samples of the pin-compatible MAX13486EELA+ to evaluate this device.
PAGE 2
Evaluates: MAX13485E/MAX13486E MAX13485E Evaluation Kit Table 1. Jumper Table (JU1, JU2, JU3) JUMPER SHUNT POSITION JU1 JU2 JU3 Open Closed* DESCRIPTION Does not connect the 120Ω resistor differentially between A and B Connects the 120Ω resistor differentially between A and B Open* R2 and R5 not connected Closed Connects A and B through R2 and R5 if populated for testing custom termination and common-mode Open Closed* Keeps DE and RE electrically separate Shorts DE and RE *Default position.
PAGE 3
MAX13485E Evaluation Kit Evaluates: MAX13485E/MAX13486E Figure 1.
PAGE 4
Evaluates: MAX13485E/MAX13486E MAX13485E Evaluation Kit Figure 2. MAX13485E EV Kit Component Placement Guide— Component Side 4 Figure 3.
PAGE 5
MAX13485E Evaluation Kit 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, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 5 © 2008 Maxim Integrated Products SPRINGER is a registered trademark of Maxim Integrated Products, Inc.