MAX13485E_08 Datasheet, PDF (1/5 Pages) Maxim Integrated Products – Evaluation Kit

19-4380; Rev 0; 12/08
MAX13485E Evaluation Kit
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
Component List
DESIGNATION QTY
DESCRIPTION
0.1µF ±10%, 16V X7R ceramic
C1
1 capacitor (0603)
TDK C1608X7R1C104K
1µF ±20%, 10V X5R ceramic
C2
1 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
RS-485 half-duplex transceiver
U1
1 (8 µDFN)
Maxim MAX13485EELA+
—
3 Shunts
—
1 PCB: MAX13485E Evaluation Kit+
Component Supplier
SUPPLIER
TDK Corp.
PHONE
WEBSITE
847-803-6100 www.component.tdk.com
Note: Indicate that you are using the MAX13485E when contacting
this component supplier.
Ordering Information
PART
TYPE
MAX13485EEVKIT+
EV Kit
+Denotes lead(Pb)-free and RoHS compliant.
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.
________________________________________________________________ Maxim Integrated Products 1
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.