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MAX33053E Shield
Evaluates: MAX33053E
General Description
The MAX33053E Shield is a fully assembled and tested
PCB that demonstrates the functionality of the MAX33053E
fault-protected with extended common mode input range
and ±25kV ESD Human Body Model (HBM) controller
area network (CAN) transceiver. The shield features a
digital isolator, used as a level translator (between the
controller and the transceiver) and operates from a range
of 1.71V to 5.5V supply.
Quick Start
Required Equipment
●
MAX33053E Shield
●
3.3V, 500mA DC power supply
●
Signal/function generator
●
Oscilloscop
Procedure
1)
Features
●
Integrated Protection Increases Robustness
• ±65V Fault Tolerant CANH and CANL
• ±25kV ESD HBM (Human Body Model)
• ±25V Extended Common Mode Input Range (CMR)
• Transmitter Dominant Timeout Prevents CAN Bus
Lockup
• Short-Circuit Protection
• Thermal Shutdown
●
MAX33053E Provides Flexible Design Options
• Silent Mode S Enables/Disables Transmitter
• 1.62V to 3.6V Logic-Supply (V
L
) Range
●
High-Speed Operation of Up to 2Mbps
●
Operating Temperature Range of -40ºC to +125ºC in
8-pin SOIC Package
Place the MAX33053E Shield on a nonconductive
surface to ensure that nothing on the PCB gets
shorted to the workspace.
Set the jumpers of
JU1, JU2, JU_CANH,
and
JU_CANL
to 2-3 position.
Place two shunts on
JU8
a. Shunt pins 4-5 to connect TXD signal to D0 of
J6.
b. Shunt pins 2-3 to connect RXD signal to D1 of
J6.
2)
3)
4)
5)
6)
7)
Shunt S_U1 and GND on
JU12,
1-2 position.
Place shunts on
JU3, JU10, JU15,
and
JU20,
1-2 position.
Verify that all jumpers are in their default position as
shown in
Table 1.
With +3.3V power supply disabled, connect the posi-
tive terminal to VCC_EXT, VL_EXT, and IOREF test
points. Connect the negative terminal to the GND
test point.
Connect the positive terminal of the function genera-
tor to D1 of
J6
and negative terminal to any GND
test points on the shield.
Turn on the +3.3V DC Power Supply.
8)
9)
Ordering Information
appears at end of data sheet.
10) Set Function generator to output a 250kHz square
wave between 0V and 3.3V, and then enable function
generator output.
11) Connect oscilloscope probes on CANH and CANL to
GND test points of the Shield. Verify the difference
voltage between CANH and CANL matches TXD in-
put signal. The difference voltage should be between
1.5V-3V in dominant mode and -120mV to +12mV in
recessive mode.
12) Connect an oscilloscope probe on D0 of
J6
and verify
the RXD output signal matches the TXD input signal.
319-100225; Rev 0; 7/18
MAX33053E Shield
Evaluates: MAX33053E
Detailed Description of Hardware
The MAX33053E Shield is a fully assembled and tested
circuit board for evaluating the MAX33053E fault-
protected high speed CAN transceiver (U1) with ±65V
of fault protection. The Shield is designed to evaluate
MAX33053E alone or in a CAN system. The MAX33053E
Shield enables Mbed or Arduino platform to communicate
on a CAN bus. The MAX14932 digital isolator is used as
a level translator with a 1.71V to 5.5V supply range.
resistors on the MAX33053E Shield should be changed to
a 60Ω with optional footprint for a 100pF load, to simulate
a complete system load during evaluation. CANH and
CANL can also be left unloaded with JU2 open.
TXD and RXD Configuration
Powering the Board
The MAX33053E Shield requires one power supply for
3.3V operation. The power supply can come from an
external supply or the Arduino/Mbed microcontroller’s
3.3V supply. To select the external supply, shunt the
JU1 VDD pin to VDD_EXT pin option, 2-3 default posi-
tion. To connect the Arduino/Mbed 3.3V supply to VDD,
shunt JU1 VDD pin to 3.3V, 1-2 position. Similarly, the VL
supply is selected using JU2. Shunt JU2 to 2-3 position
to select the external supply. Shunt JU2 to 1-2 position
to select the Arduino/Mbed 3.3V supply. Refer to
Table 1
for jumper settings.
Digital channel assignments for TXD and RXD are selected
via JU8. It consists of three columns, and 16 rows. The
columns labeled TXD and RXD are connected to INA1 and
OUTA1 pins on of the MAX14932FASE (U2), respectively.
The middle column is the digital I/O pins, D0 to D15. This
provides flexibility for the user to select different resources
on the microcontroller for transmitting and receiving signals
to and from the CAN transceiver.
Table 2
shows the list of
JU8 jumper options.
Silent Mode
Drive S pin high to place the MAX33053E in silent mode.
This disables the transmitter regardless of the voltage
level at TXD. However, RXD is still active and monitors
activity on the bus line.
DB9 Connector
On-Board Termination
A properly terminated CAN bus is terminated at each
end with the characteristic impedance of the cable. The
MAX33053E Shield features a selectable 60Ω load and a
60Ω-60Ω split termination circuit between the CANH and
CANL driver outputs. The 60Ω–60Ω split termination has
a footprint for a capacitor to reduce high frequency noise
and common mode drift. If the board is evaluated in a
system and is connected at the end of the cable, then
select the 120Ω (60Ω–60Ω) termination. The termination
The MAX33053E Shield has a DB9 connector to CANH
and CANL (pins 7 and 2, respectively).
SD Card
The MAX33053E Shield has a SD Card socket. The
Micro SD card is connected to D10-D13 to interface with
Arduino/Mbed board via SPI. The user can store CAN
messages.
Table 1. Table Jumper Settings
JUMPER
JU_CANH &
JU_CANL
SHUNT POSITION
1-2
2-3*
Open
1-2
JU1
2-3*
Open
1-2
JU2
JU3
JU8
2-3*
Open
1-2*4
-4
DESCRIPTION
Connects 120.8Ω between CANH and CANL
Connects 60.4Ω between CANH and CANL
No load is connected between CANH and CANL
VDD is shorted to 3.3V supply
VDD is shorted to VDD_EXT supply
VDD is open
VL is shorted to 3.3V supply
VL is shorted to VL_EXT supply
VL is open
Connects VL to U1 Pin 5
Refer to TXD and RXD Configuration
www.maximintegrated.com
Maxim Integrated
│
2
MAX33053E Shield
Evaluates: MAX33053E
Table 1. Table Jumper Settings (continued)
JUMPER
JU9
JU10
SHUNT POSITION
1-2
Open*
1-2*
Open
1-2*
JU12
1-3
1-4
Open
JU15
JU20
1-2*
Open
1-2*
Open
Connects S pin to D7
Disconnects S pin from D7
Connects TVS diode to CANL
Disconnects TVS diode to CANL
Connects S pin to ground
Internal pull up for silent mode.
Connects S pin to the U2’s OUTB2 pin used for Arduino/mbed interface.
Internal pull up for silent mode.
Connects 15pF to receiver output to ground.
Disconnects 15pF on receiver output.
Connects TVS diode to CANH
Disconnects TVS diode to CANH
DESCRIPTION
Note:
‘*’ indicates default jumper state.
Table 2. Table TXD and RXD Jumper Setting
JUMPER
SHUNT
POSITION
1-2
4-5*
7-8
10-11
13-14
16-17
19-20
JU8
22-23
25-26
28-29
31-32
34-35
37-38
40-41
43-44
46-47
DESCRIPTION
Connects TXD to D0
Connects TXD to D1
Connects TXD to D2
Connects TXD to D3
Connects TXD to D4
Connects TXD to D5
Connects TXD to D6
Connects TXD to D7
Connects TXD to D8
Connects TXD to D9
Connects TXD to D10
Connects TXD to D11
Connects TXD to D12
Connects TXD to D13
Connects TXD to D14
Connects TXD to D15
JU8
JUMPER
SHUNT
POSITION
2-3*
5-6
8-9
11-12
14-15
17-18
20-21
23-24
26-27
29-30
32-33
35-36
38-39
41-42
44-45
47-48
DESCRIPTION
Connects RXD to D0
Connects RXD to D1
Connects RXD to D2
Connects RXD to D3
Connects RXD to D4
Connects RXD to D5
Connects RXD to D6
Connects RXD to D7
Connects RXD to D8
Connects RXD to D9
Connects RXD to D10
Connects RXD to D11
Connects RXD to D12
Connects RXD to D13
Connects RXD to D14
Connects RXD to D15
Ordering Information
PART
MAX33053ESHLD#
TYPE
SHIELD
Note:
‘*’ indicates default jumper state.
www.maximintegrated.com
Maxim Integrated
│
3
MAX33053E Shield
Evaluates: MAX33053E
MAX33053E Shield Bill of Materials
ITEM
REF_DES
DNI/DNP QTY
MFG PART #
MANUFACTURER
1
C1, C2
-
2
GRM21BR71A106KE51
MURATA
DESCRIPTION
CAPACITOR; SMT (0805);
CERAMIC CHIP; 10UF; 10V;
10UF
TOL=10%; MODEL=GRM SERIES;
TG=-55 DEGC TO +125 DEGC;
TC=X7R
CAPACITOR; SMT; 0402;
CERAMIC; 0.1uF; 16V; 5%;
0.1UF
X7R; -55degC to + 125degC;
0 +/-15% degC MAX.
CAPACITOR; SMT (0402);
CERAMIC CHIP; 15PF; 50V;
15PF
TOL=5%; TG=-55 DEGC TO
+125 DEGC; TC=C0G
TEST POINT; PIN DIA=0.1IN;
TOTAL LENGTH=0.3IN; BOARD
N/A
HOLE=0.04IN; WHITE; PHOSPHOR
BRONZE WIRE SILVER;
DIODE; TVS; SMC (DO-214AB);
25.6V
VRM=25.6V; IPP=36A
TEST POINT; PIN DIA=0.1IN;
TOTAL LENGTH=0.3IN;
N/A
BOARD HOLE=0.04IN; RED;
PHOSPHOR BRONZE
WIRE SILVER PLATE FINISH;
CONNECTOR; FEMALE;
THROUGH HOLE; .025INCH
SSQ-108-24-G-S
SQ POST SOCKET; STRAIGHT;
8PINS ;
CONNECTOR; FEMALE;
THROUGH HOLE;
SSQ-106-24-G-S
.025INCH SQ POST SOCKET;
STRAIGHT; 6PINS ;
CONNECTOR; FEMALE;
THROUGH HOLE; .025INCH
SSQ-110-24-G-S
SQ POST SOCKET; STRAIGHT;
10PINS ;
CONNECTOR; MALE; THROUGH
182-009-113R531 HOLE; D-SUBMINIATURE
CONNECTOR; RIGHT ANGLE; 9PINS
CONNECTOR; FEMALE; SMT;
502570-0893
MICROSD CARD CONNECTOR;
RIGHT ANGLE; 10PINS
CONNECTOR; MALE;
THROUGH HOLE; BREAKAWAY;
PCC03SAAN
STRAIGHT THROUGH; 3PINS;
-65 DEGC TO +125 DEGC
CONNECTOR; MALE;
THROUGH HOLE; BREAKAWAY;
PCC02SAAN
STRAIGHT THROUGH; 2PINS;
-65 DEGC TO +125 DEGC
CONNECTOR; MALE; THROUGH
TSW-116-07-T-T
HOLE; 0.025IN SQ POST HEADER;
STRAIGHT; 48PINS
EVKIT PART-CONNECTOR;
MALE; THROUGH HOLE;
TSW-104-07-L-S
TSW SERIES; SINGLE ROW;
STRAIGHT; 4PINS
VALUE
COMMENTS
2
C3-C6
-
4
C0402C104J4RAC
KEMET
3
C10
-
1
C0402C0G500-150JNP;
GRM1555C1H150JA01
VENKEL LTD.;
MURATA
4
CANH, CANL,
RXD_U1, TXD_U1
D1, D2
-
4
5002 KEYSTONE
5
-
2
SM15T30CA
ST MICROELECTRONICS
6
IOREF
-
1
5000 KEYSTONE
7
J3, J6
-
2
SSQ-108-24-G-S
SAMTEC
8
J4
-
1
SSQ-106-24-G-S
SAMTEC
9
J5
-
1
SSQ-110-24-G-S
SAMTEC
10
J7
-
1
182-009-113R531
NORCOMP
11
J14
-
1
502570-0893
MOLEX
12
JU1, JU2
-
2
PCC03SAAN
SULLINS
13
JU3, JU9, JU10,
JU15, JU20
-
5
PCC02SAAN
SULLINS
14
JU8
-
1
TSW-116-07-T-T
SAMTEC
15
JU12
-
1
TSW-104-07-L-S
SAMTEC
www.maximintegrated.com
Maxim Integrated
│
4
MAX33053E Shield
Evaluates: MAX33053E
MAX33053E Shield Bill of Materials (continued)
ITEM
REF_DES
DNI/DNP QTY
MFG PART #
MANUFACTURER
ON-SHORE
TECHNOLOGY INC.
16
JU13
-
1
OSTTA024163
DESCRIPTION
CONNECTOR; FEMALE;
THROUGH HOLE; 5.08MM
OSTTA024163
TERM BLOCK CONNECTOR;
STRAIGHT; 2PINS; -30 DEGC
TO +105 DEGC
CONNECTOR; MALE; THROUGH HOLE;
PBC03SAAN
BREAKAWAY; STRAIGHT;
3PINS; -65 DEGC TO +125 DEGC
RESISTOR; 0402; 0 OHM;
0
0%; JUMPER; 0.10W; THICK FILM
RESISTOR, 0402, 1.8K OHM,
1.8K
1%, 100PPM, 0.0625W,
THICK FILM
RESISTOR; 0603; 60.4 OHM;
60.4
1%; 100PPM; 0.10W; THICK FILM
RES; SMT (1210); 60.4R; 1%;
60.4
+/-100PPM/DEGK; 0.75W
RESISTOR, 0402, 3.3K OHM,
3.3K
1%, 100PPM, 0.0625W, THICK FILM
TEST POINT; PIN DIA=0.125IN;
TOTAL LENGTH=0.445IN;
N/A
BOARD HOLE=0.063IN;
BLACK; PHOSPHOR BRONZE
WIRE SILVER PLATE FINISH;
TEST POINT; PIN DIA=0.1IN;
TOTAL LENGTH=0.3IN;
N/A
BOARD HOLE=0.04IN; BLACK;
PHOSPHOR BRONZE
WIRE SILVER PLATE FINISH;
EVKIT PART - IC; TXRX; +3.3V CAN
TRANSCEIVER WITH +/-65V FP;
+/-25V CMR AND +/-25KV ESD;
MAX33053EASA+ PACKAGE OUTLINE DRAWING:
21-0041; LAND PATTERN NUMBER:
90-0096; PACKAGE CODE: S8+4;
NSOIC8
IC; DISO; 2/2 CHANNEL;
150MBPS; DEFAULT LOW;
MAX14932FASE+
2.75KVRMS DIGITAL
ISOLATOR; NSOIC16 150MIL
TESTPOINT WITH 1.80MM
N/A
HOLE DIA, RED, MULTIPURPOSE;
PCB
PCB:MAX33053ESHLD
CAPACITOR; SMT (0402);
CERAMIC CHIP; 0.047UF;
0.047UF
25V; TOL=10%; TG=-55
DEGC TO +125 DEGC
CAPACITOR; SMT (0402);
CERAMIC CHIP; 100PF;
50V; TOL=5%; TG=-55 DEGC
TO +125 DEGC; TC=C0G
0
OPEN
RESISTOR; 0402; 0 OHM; 5%;
JUMPER; 0.063W; THICK FILM
RESISTOR; 0402; OPEN;
FORMFACTOR
VALUE
COMMENTS
17
18
19
20
21
22
JU_CANH,
JU_CANL
R1, R3
R2, R8, R10, R12
R5, R6
R7
R9, R11, R13, R14
-
-
-
-
-
-
2
2
4
2
1
4
PBC03SAAN
ERJ-2GE0R00X
CRCW04021K80FK;
RC0402FR-071K8L
CRCW060360R4FK
CRCW121060R4FKEAHP
CRCW04023K30FK
SULLINS
PANASONIC
VISHAY DALE;
YAGEO PHICOMP
VISHAY DALE
VISHAY DRALORIC
VISHAY DALE
23
TP17, TP19
-
2
5011 KEYSTONE
24
TP18
-
1
5001 KEYSTONE
25
U1
-
1
MAX33053EASA+
MAXIM
26
U2
VDD_EXT,
VL_EXT
PCB
C7
-
1
MAX14932FASE+
MAXIM
27
28
29
-
-
DNP
2
1
0
-
C1005X7R1E473K;
GRM155R71E473K
5010 KEYSTONE
MAXIM
TDK;MURATA
-
30
C8
DNP
0
31
32
TOTAL
R4
R15
DNP
DNP
0
0
53
C0402C101J5GAC;
NMC0402NPO101J;
CC0402JRNPO9BN101;
GRM1555C1H101JA01;
C1005C0G1H101J050
RC0402JR-070RL;
CR0402-16W-000RJT
N/A
KEMET;
NIC COMPONENTS CORP.;
YAGEO PHICOMP;
MURATA;TDK
YAGEO PHYCOMP;
VENKEL LTD.
N/A
100PF
www.maximintegrated.com
Maxim Integrated
│
5
DSP 与 ARM 处理器
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