© Semiconductor Components Industries, LLC, 2009
January, 2009 Rev. 5
1 Publication Order Number:
AMIS42700/D
AMIS-42700
Dual High Speed CAN
Transceiver
General Description
Controller area network (CAN) is a serial communication protocol,
which supports distributed realtime control and multiplexing with
high safety level. Typical applications of CANbased networks can be
found in automotive and industrial environments.
The AMIS42700 DualCAN transceiver is the interface between
up to two physical bus lines and the protocol controller and will be
used for serial data interchange between different electronic units at
more than one bus line. It can be used for both 12 V and 24 V systems.
The circuit consists of following blocks:
Two differential line transmitters
Two differential line receivers
Interface to the CAN protocol handler
Interface to expand the number of CAN busses
Logic block including repeater function and the feedback suppression
Thermal shutdown circuit (TSD)
Short to battery treatment circuit
Due to the wide commonmode voltage range of the receiver inputs,
the AMIS42700 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
Fully compatible with the ISO 118982 standard
Certified “Authentication on CAN Transceiver Conformance (d1.1)”
High speed (up to 1 Mbit/s in function of the bus topology)
Ideally suited for 12 V and 24 V industrial and automotive
applications
Low EME commonmodechoke is no longer required
Differential receiver with wide commonmode range (±35 V) for
high EMS
No disturbance of the bus lines with an unpowered node
Dominant timeout function
Thermal protection
Bus pins protected against transients in an automotive environment
Short circuit proof to supply voltage and ground
SOIC 20
WC SUFFIX
CASE 751AQ
http://onsemi.com
See detailed ordering and shipping information in the package
dimensions section on page 12 of this data sheet.
ORDERING INFORMATION
Tx0
GND
GND
14
15
16
17
18
19
201
2
3
4
5
6
7
NC
Rx0
Vref1
Rint
EN1
NC
GND
CANL1
CANH1
VCC
8
9
10
13
12
11
AMIS42700
NC
GND
GND
CANL2
CANH2
Text
EN2
PIN CONFIGURATION
AMIS42700
http://onsemi.com
2
Table 1. Technical Characteristics
Symbol Parameter Conditions Min. Max. Unit
V
CANHx
DC voltage at pin CANH1/2 0 < V
CC
< 5.25 V; no time limit 45 +45 V
V
CANLx
DC voltage at pin CANL1/2 0 < V
CC
< 5.25 V; no time limit 45 +45 V
V
o(dif)(bus_dom)
Differential bus output voltage in dominant state
42.5 W < R
LT
< 60 W
1.5 3 V
CMrange Input commonmode range for comparator Guaranteed differential receiver
threshold and leakage current
35 +35 V
V
CMpeak
Commonmode peak See Figures 9 and 10 (Note 1) 1000 1000 mV
V
CMstep
Commonmode step See Figures 9 and 10 (Note 1) 250 250 mV
1. The parameters V
CMpeak
and V
CMstep
guarantee low EME.
CANH1
CANL1
AMIS42700
GND
Rx0
V
REF
19
18
Driver
control
clock
COMP
V
cc
/
2
+
R
i(cm)
R
i(cm)
Timer
Logic
Unit
8
Driver
control
Thermal
shutdown
COMP
V
cc
/
2
+
R
i(cm)
R
i(cm)
Timer
POR
10 3
4
7
9
25
6
15 16 17
13
14
12
Feedbeck Surpression
Feedbeck Surpression
Rint
Tx0
TextENB1
ENB2
VCC
CANH2
CANL2
V
CC
V
CC
V
CC
V
CC
Figure 1. Block Diagram
Typical Application
Application Description
AMIS42700 is especially designed to provide the link
between a CAN controller (protocol IC) and two physical
busses. It is able to operate in three different modes:
Dual CAN
A CANbus extender
A CANbus repeater
AMIS42700
http://onsemi.com
3
Application Schematics
AMIS42700
EN1
EN2
Text
Rx0
Tx0
7
9
2
3
10
Rint
4
CANH2
CANL1
GND
Vref
VCC
18
13
12
19
14
8
5
6 15 16 17
CANL2
CANH1
C
D
R
LT
60 W
CAN BUS 2
CAN BUS 1
R
LT
60 W
100 nF
VBAT
5Vreg
Figure 2. Application Diagram CANbus Repeater
AMIS42700
EN1
EN2
Text
Rx0
Tx0
7
9
2
3
10
Rint
4
VBAT
CANH2
CANL1
GND
VCC
Vref
VCC
18
13
12
19
14
8
GND
CAN
con
troller
5Vreg
5
6 15 16 17
CANL2
CANH1
C
D
C
D
R
LT
60 W
CAN BUS 2
CAN BUS 1
R
LT
60 W
100 nF100 nF
mC
Figure 3. Application Diagram DualCAN

AMIS42700WCGA4RH

Mfr. #:
Manufacturer:
ON Semiconductor
Description:
CAN Interface IC DUAL CAN HS TRANSC.
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet