AMIS-30663
High Speed CAN
Transceiver
Introduction
The AMIS−30663 CAN transceiver is the interface between a
controller area network (CAN) protocol controller and the physical
bus and may be used in both 12 V and 24 V systems. The digital
interface level is powered from a 3.3 V supply providing true I/O
voltage levels for 3.3 V CAN controllers.
The transceiver provides differential transmit capability to the bus
and differential receive capability to the CAN controller. Due to the
wide common−mode voltage range of the receiver inputs, the
AMIS−30663 is able to reach outstanding levels of electromagnetic
susceptibility (EMS). Similarly, extremely low electromagnetic
emission (EME) is achieved by the excellent matching of the output
signals.
Key Features
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PIN ASSIGNMENT
TxD
GND
V
CC
RxD
(Top View)
1
AMIS
30663
V
33
CANH
CANL
V
REF
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Fully Compatible with the “ISO 11898−2” Standard
Certified “Authentication on CAN Transceiver Conformance (d1.1)”
High Speed (up to 1 Mbit/s)
Ideally Suited for 12 V and 24 V Industrial and Automotive
Applications
Low EME Common−mode−choke is No Longer Required
Differential Receiver with Wide Common−mode Range (±35 V) for
High EMS
No Disturbance of the Bus Lines with an Un−powered Node
Transmit Data (TxD) Dominant Time−out Function
Thermal Protection
Bus Pins Protected Against Transients in an Automotive
Environment
Short Circuit Proof to Supply Voltage and Ground
Logic Level Inputs Compatible with 3.3 V Devices
ESD Protection Level for CAN Bus up to
±8
kV
This is a Pb−Free Device
Table 1. Ordering Information
Container
Part Number
AMIS30663CANG2G
AMIS30663CANG2RG
Description
HS CAN Transc. (3.3 V)
HS CAN Transc. (3.3 V)
Package
SOIC−8
GREEN
SOIC−8
GREEN
Shipping
Configuration
†
Tube/Tray
Tape & Reel
Quantity
96
3000
Temp. Range
−40°C
to 125°C
−40°C
to 125°C
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
©
Semiconductor Components Industries, LLC, 2009
January, 2009
−
Rev. 6
1
Publication Order Number:
AMIS−30663/D
AMIS−30663
Table of Contents
Page
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Technical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Pin List and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Measurement Set−ups and Definitions . . . . . . . . . . . . . . . 8
Soldering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
V
CC
3
V
33
Thermal
shutdown
7
TxD
1
’S’
V
33
8
AMIS−30663
RxD
4
COMP
V
CC
5
2
GND
R
i(cm)
V
CC
/
2
+
R
i(cm)
Timer
Driver
control
6
CANH
CANL
V
REF
Figure 1. Block Diagram
Table 2. Technical Characteristics
Symbol
V
CANH
V
CANL
Vo(dif)(bus_dom)
tpd(rec−dom)
t
pd(dom−rec)
CM−range
Parameter
DC voltage at pin CANH
DC voltage at pin CANL
Differential bus output voltage
in dominant state
Propagation delay TxD to RxD
Propagation delay TxD to RxD
Input common−mode range for
comparator
Common−mode peak
Common−mode step
Conditions
0 < VCC < 5.25 V; no time limit
0 < VCC < 5.25 V; no time limit
42.5
W
< RLT < 60
W
Figure 7
Figure 7
Guaranteed differential receiver
threshold and leakage current
Figures 8 and 9 (Note 1)
Figures 8 and 9 (Note 1)
Min
−45
−45
1.5
100
100
−35
−500
−150
Max
+45
+45
3
230
245
+35
500
150
Unit
V
V
V
ns
ns
V
mV
mV
V
CM−peak
V
CM−step
1. The parameters VCM−peak and VCM−step guarantee low EME.
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2
AMIS−30663
Typical Application
VBAT
IN
5V−reg
OUT
60
W
60
W
47 nF
IN
3.3V−
reg
OUT
V
CC
RxD
CAN
controller
8
4
V
33
3
7
V
CC
CANH
CAN
BUS
AMIS−
VREF
30663 5
TxD
1
2
6
GND
CANL
60
W
60
W
47 nF
GND
Figure 2. Application Diagram
TxD
GND
V
CC
RxD
1
2
3
4
(top view)
8
7
6
5
V
33
CANH
CANL
V
REF
Figure 3. Pin Configuration
AMIS−
30663
Table 3. Pin Out
Pin
1
2
3
4
5
6
7
8
Name
TxD
GND
V
CC
RxD
V
REF
CANL
CANH
V
33
Description
Transmit data input; low input
→
dominant driver; internal pull−up current
Ground
Supply voltage
Receive data output; dominant transmitter
→
low output
Reference voltage output
LOW−level CAN bus line (low in dominant mode)
HIGH−level CAN bus line (high in dominant mode)
3.3 V supply for digital I/O
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3
AMIS−30663
Functional Description
General
Operating Modes
The AMIS−30663 is the interface between the CAN
protocol controller and the physical bus. It is intended for
use in automotive and industrial applications requiring baud
rates up to 1 Mbaud. It provides differential transmit
capability to the bus and differential receiver capability to
the CAN protocol controller. It is fully compatible to the
“ISO 11898−2” standard.
Table 4. Function Table (X = don’t care)
Pin
Mode
TxD
RxD
State
AMIS−30663 only operates in high−speed mode as
illustrated in Table 4.
The transceiver is able to communicate via the bus lines.
The signals are transmitted and received to the CAN
controller via the pins TxD and RxD. The slopes on the bus
lines outputs are optimised to give extremely low EME.
Bus
CANH
CANL
4.75 V < Vcc < 5.25 V
High
Speed
Vcc < PORL
−
X
1
Recessive
0 < V
CANH
< V
CC
0 < V
CANH
< V
CC
0 < V
CANL
< V
CC
0 < V
CANL
< V
CC
0
1
0
1
Dominant
Recessive
High
0.5 Vcc
Low
0.5 Vcc
PORL < Vcc < 4.75 V
−
> V
IH
1
Recessive
Over−temperature Detection
A thermal protection circuit protects the IC from damage
by switching off the transmitter if the junction temperature
exceeds a value of approximately 160°C. Because the
transmitter dissipates most of the power, the power
dissipation and temperature of the IC is reduced. All other
IC functions continue to operate. The transmitter off−state
resets when pin TxD goes HIGH. The thermal protection
circuit is particularly needed when a bus line short circuits.
TxD Dominant Time−out Function
Should TxD become disconnected, this pin is pulled high
internally.
When the Vcc supply is removed, pins TxD and RxD will
be floating. This prevents the AMIS−30663 from being
supplied by the CAN controller through the I/O pins.
3.3 V Interface
A TxD dominant time−out timer circuit prevents the bus
lines from being driven to a permanent dominant state
(blocking all network communication) if pin TxD is forced
permanently LOW by a hardware and/or software
application failure. The timer is triggered by a negative edge
on pin TxD. If the duration of the LOW−level on pin TxD
exceeds the internal timer value t
dom
, the transmitter is
disabled, driving the bus into a recessive state. The timer is
reset by a positive edge on pin TxD.
Fail−safe Features
AMIS−30663 may be used to interface with 3.3 V or 5 V
controllers by use of the V
33
pin. This pin may be supplied
with 3.3 V or 5 V to have the corresponding digital interface
voltage levels.
When the V
33
pin is supplied at 2.5 V, even interfacing
with 2.5 V CAN controllers is possible. See also Digital
Output Characteristics @ V
33
= 2.5 V, Table 8. In this case
a pull resistor from TxD to V
33
is necessary.
Electrical Characteristics
Definitions
A current−limiting circuit protects the transmitter output
stage from damage caused by accidental short−circuit to
either positive or negative supply voltage
−
although power
dissipation increases during this fault condition.
The pins CANH and CANL are protected from
automotive electrical transients (according to “ISO 7637”;
see Figure 4).
All voltages are referenced to GND (pin 2). Positive
currents flow into the IC. Sinking current means that the
current is flowing into the pin. Sourcing current means that
the current is flowing out of the pin.
Absolute Maximum Ratings
Stresses above those listed in Table 5 may cause
permanent device failure. Exposure to absolute maximum
ratings for extended periods may effect device reliability.
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AMIS−30663
Table 5. Absolute Maximum Ratings
Symbol
V
CC
V
33
V
CANH
V
CANL
V
TxD
V
RxD
VREF
V
tran(CANH)
V
tran(CANL)
V
tran(VREF)
V
esd(CANL/CANH)
V
esd
Latch−up
T
stg
T
amb
T
junc
Parameter
Supply voltage
I/O interface voltage
DC voltage at pin CANH
DC voltage at pin CANL
DC voltage at pin TxD
DC voltage at pin RxD
DC voltage at pin VREF
Transient voltage at pin CANH
Transient voltage at pin CANL
Transient voltage at pin VREF
Electrostatic discharge voltage at
CANH and CANL pin
Electrostatic discharge voltage at all
other pins
Static latch−up at all pins
Storage temperature
Ambient temperature
Maximum junction temperature
(Note 2)
(Note 2)
(Note 2)
(Note 3)
(Note 6)
(Note 4)
(Note 6)
(Note 5)
−55
−40
−40
0 < V
CC
< 5.25 V; no time limit
0 < V
CC
< 5.25 V; no time limit
Conditions
Min.
−0.3
−0.3
−45
−45
−0.3
−0.3
−0.3
−150
−150
−150
−8
−500
−4
−250
Max.
+7
+7
+45
+45
V
CC
+ 0.3
V
CC
+ 0.3
VCC + 0.3
+150
+150
+150
+8
+500
+4
+250
100
+155
+125
+150
Unit
V
V
V
V
V
V
V
V
V
V
kV
V
kV
V
mA
°C
°C
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
2. Applied transient waveforms in accordance with “ISO 7637 part 3”, test pulses 1, 2, 3a and 3b (see Figure 4).
3. Standardized human body model system ESD pulses in accordance to IEC 1000.4.2.
4. Standardized human body model ESD pulses in accordance to MIL883 method 3015. Supply pin 8 is
±4
kV.
5. Static latch−up immunity: static latch−up protection level when tested according to EIA/JESD78.
6. Standardized charged device model ESD pulses when tested according to EOS/ESD DS5.3−1993.
Table 6. Thermal Characteristics
Symbol
R
th(vj−a)
R
th(vj−s)
Parameter
Thermal resistance from junction to ambient in SO8 package
Thermal resistance from junction to substrate of bare die
Conditions
In free air
In free air
Value
145
45
Unit
K/W
K/W
Table 7. DC Characteristics
(V
CC
= 4.75 to 5.25 V; V
33
= 2.9 V to 3.6 V; T
junc
=
−40
to +150°C; R
LT
= 60
W
unless specified otherwise.)
Symbol
Supply (pin V
CC
and pin V
33
)
I
CC
I
33
I
33
Supply current
I/O interface current
I/O interface current (Note 7)
Recessive;
V
TXD
=
V
CC
V
33
= 3.3 V;
C
L
= 20 pF; recessive
V
33
= 3.3 V;
C
L
= 20 pF; 1 Mbps
Dominant;
V
TXD
= 0 V
45
4
65
8
1
170
mA
mA
mA
Parameter
Conditions
Min.
Typ.
Max.
Unit
Transmitter Data Input (pin TxD)
V
IH
V
IL
I
IH
I
IL
HIGH−level input voltage
LOW−level input voltage
HIGH−level input current
LOW−level input current
Output recessive
Output dominant
V
TxD
= V
33
V
TxD
= 0 V
2.0
−0.3
−1
−50
−
−
0
−200
V
CC
+0.8
+1
−300
V
V
mA
mA
7. Not tested on ATE.
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