19-4957; Rev 0; 9/09
MAX3162 Evaluation Kit
General Description
The MAX3162 evaluation kit (EV kit) provides a proven
design to evaluate the MAX3162 programmable RS-232/
RS-485/422 multiprotocol transceiver. The MAX3162 EV
kit can be used as an RS-232 to RS-485/RS-422 con-
verter and/or an RS-485/RS-422 to RS-232 converter.
The MAX3162 EV kit PCB comes with a MAX3162CAI+
installed.
S
3.0V to 5.5V Single-Supply Operation
S
Converts RS-232 to RS-485/RS-422
S
Converts RS-485/RS-422 to RS-232
S
RS-485 Loopback
S
Proven PCB Layout
S
Fully Assembled and Tested
Features
Evaluates: MAX3162
Component List
DESIGNATION
C1, C4, C5, C6
QTY
4
DESCRIPTION
0.1FF
Q10%,
16V X7R ceramic
capacitors (0603)
TDK C1608X7R1C104K
10FF
Q20%,
6.3V X5R ceramic
capacitor (0603)
Murata GRM188R60J106M
4.7FF
Q10%,
6.3V X5R ceramic
capacitor (0603)
Murata GRM188R60J475K
Test points, black
DB9 female right-angle recep-
tacle, 0.318in D-sub
4-position terminal block
3-pin headers
2-pin headers
Not installed, resistors (0603)
120I
Q5%
resistors (0603)
Test points, white
Test point, red
Multiprotocol transceiver
(28 SSOP)
Maxim MAX3162CAI+
DB9 I/O extension cable
Shunts
PCB: MAX3162 EVALUATION
KIT+
SUPPLIER
Murata
Electronics
North
America, Inc.
TDK Corp.
PART
MAX3162EVKIT+
Ordering Information
TYPE
EV Kit
+Denotes
lead(Pb)-free and RoHS compliant.
C2
1
Component Suppliers
PHONE
WEBSITE
C3
GTP1–GTP5
J1
J2
JU1–JU6, JU9
JU7, JU8, JU10,
JU11
R1, R3, R4, R6
R2, R5
TP1+, TP1-,
TP2, TP3, TP4+,
TP4-, TP5, TP6
VCC
U1
—
—
—
1
5
1
1
7
4
0
2
8
1
1
1
11
1
770-436-1300
www.murata-northamerica.com
847-803-6100
www.component.tdk.com
Note:
Indicate that you are using the MAX3162 when contact-
ing these component suppliers.
_______________________________________________________________
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.
MAX3162 Evaluation Kit
Evaluates: MAX3162
Quick Start
• MAX3162 EV kit
5) Connect the DB9 I/O extension cable between the EV
kit and the computer’s serial port.
6) Start the RealTerm software by opening its icon in
the
Start | Programs
menu. The RealTerm software
main window appears, as shown in Figure 1.
Note:
If the serial cable is connected to a serial port other
than COM1, bring up the
Port
tab and open the cor-
responding serial port.
7) In the RealTerm window, click in the display area
and type on the keyboard. The digital loopback con-
nection immediately relays each character from the
receiver to the transmitter, so each character typed
on the keyboard appears in the display area.
8) Move the shunt of jumper JU3 to the 2-3 position to
disable the RS-232 transmitter.
9) In the RealTerm window, click in the display area and
type on the keyboard. With the RS-232 transmitter
disabled, characters typed on the keyboard do not
appear in the display area.
Recommended Equipment
• DB9 I/O extension cable (included)
• 5.0V/250mA DC power supply
• User-supplied Windows
M
2000, Windows XP
M
, or
Windows Vista
M
PC with a spare RS-232 serial port
Note:
In the following sections, software-related items
are identified by bolding. Text in
bold
refers to items
directly from the EV kit software. Text in
bold and under-
lined
refers to items from the Windows operating system.
The MAX3162 EV kit is fully assembled and tested. Follow
the steps below to verify board operation.
Caution: Do
not turn on power supply until all connections are
completed.
1) Visit
www.maxim-ic.com/evkitsoftware
to download
the latest version of the EV kit software, 3162Rxx.ZIP.
Save the EV kit software to a temporary folder and
uncompress the ZIP file. The EV kit software consists
of the free, open-source terminal emulator, RealTerm
(also available from http://realterm.sourceforge.net).
2) Verify that all jumpers (JU1–JU11) are in their default
positions, as shown in Table 1.
3) Move the shunts of jumpers JU7 and JU8 to the 1-2
position to enable RS-485 loopback.
4) Connect the positive terminal of the 5.0V supply to
VCC on the EV kit and connect the negative terminal
of the 5.0V supply to GND.
Procedure
Detailed Description of Hardware
The MAX3162 evaluation kit (EV kit) provides a proven
design to evaluate the MAX3162 programmable RS-232/
RS-485/RS-422 multiprotocol transceiver. The MAX3162
EV kit is configured to bidirectionally convert between the
RS-232 and RS-485/RS-422 signals. The DB9 connector
(J1) provides the RS-232 connection to the MAX3162
and the terminal block (J2) provides the RS-485 connec-
tions to the MAX3162.
Windows, Windows XP, and Windows Vista are registered trademarks of Microsoft Corp.
2
______________________________________________________________________________________
MAX3162 Evaluation Kit
Evaluates: MAX3162
Table 1. MAX3162 EV Kit Jumper Descriptions
JUMPER
JU1
SHUNT POSITION
1-2*
2-3
1-2*
JU2
2-3
1-2*
2-3
1-2*
2-3
1-2*
2-3
1-2*
2-3
1-2
JU7
Open*
1-2
JU8
Open*
1-2*
2-3
1-2
JU10
Open*
1-2
JU11
Open*
*Default
position.
SHDN
= VCC (enables the MAX3162)
SHDN
= GND (shuts down the MAX3162)
FAST = VCC (enables maximum data rate)
FAST = GND (the RS-232 transmitters and the RS-485/RS-422 driver are slew-rate limited to
reduce EMI)
TE232 = VCC (enables RS-232 transmitter output)
TE232 = GND (disables RS-232 transmitter output)
DE485 = VCC (enables the RS-485 driver)
DE485 = GND (disables the RS-485 driver)
RE485
= GND (enables the RS-485 receiver)
RE485
= VCC (disables the RS-485 receiver)
RE232
= GND (enables the RS-232 receiver)
RE232
= VCC (disables the RS-232 receiver)
RS-485 noninverting receiver input A is driven by the noninverting driver output
Y (RS-485 loopback)
RS-485 noninverting receiver input A is not connected to the noninverting driver output
Y (RS-485 loopback)
RS-485 inverting receiver input A is driven by the inverting driver output Y (RS-485 loopback)
RS-485 inverting receiver input B is not connected to the inverting driver output
Z (RS-485 loopback)
T2IN = GND
T2IN = VCC
Connects the 120I termination resistor between the RS-485 inverting and noninverting
receiver inputs
Disconnects the 120I termination resistor between the RS-485 inverting and noninverting
receiver inputs
Connects the 120I termination resistor between the RS-485 inverting and noninverting driver
outputs
Disconnects the 120I termination resistor between the RS-485 inverting and noninverting
driver outputs
DESCRIPTION
JU3
JU4
JU5
JU6
JU9
4
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