AMIS-3066x - Difference Between 5 V and 3.3 V Versions

AND8375/D
AMIS-3066x - Difference
Between 5 V and 3.3 V
Versions
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APPLICATION NOTE
Introduction
V CC
ON Semiconductor has two versions of the AMIS−3066x
CAN high speed transceiver:
• AMIS−30660 full 5 V version
• AMIS−30663 version with 3.3 V interfacing towards
CAN controller
The AMIS−30663 is a derivative of the AMIS−30660
silicon, with minor modifications at metal level. This
application note describes the differences between the two
products.
3
Thermal
shutdown
V33
7
TxD
V33
Timer
1
’S’
8
AMIS−30663
RxD
VREF
DIFFERENCES BETWEEN AMIS−30660 AND
AMIS−30663
4
6
Driver
control
CANH
CANL
Ri(cm)
COMP
Vcc / 2
+
VCC
Ri(cm)
5
2
PC20041012.1
Block Diagrams
GND
Figure 2. AMIS−30663 Block Diagram
Both products are based on the same product specification
and IP blocks. Detailed general block diagrams are shown
in and Figures 1 and 2.
Pinout Differences
V CC
S
3
8
VCC
TxD
1
7
Driver
control
Timer
6
CANH
CANL
TxD
1
GND
2
VCC
3
RxD
4
AMIS−
30663
Thermal
shutdown
COMP
Ri(cm)
5
Vcc /2
+
Ri(cm)
2
PC20040918.1
GND
January, 2009 − Rev. 2
CANH
6
CANL
5
VREF
1
GND
2
VCC
3
RxD
4
8
S
7
CANH
6
CANL
5
VREF
PC20040918.3
Figure 1. AMIS−30660 Block Diagram
© Semiconductor Components Industries, LLC, 2009
TxD
AMIS−
30660
VREF
4
V33
7
PC20040918.8
AMIS−30660
RxD
8
1
Publication Order Number:
AND8375/D
AND8375/D
Table 1. PIN DESCRIPTION
Pin
AMIS−30660 AMIS−30663
Description
1
TxD
TxD
Transmit Data Input; Low Input → Dominant Driver; Internal Pullup Current
2
GND
GND
Ground
3
VCC
VCC
Supply Voltage
4
RxD
RxD
Receive Data Output; Dominant Transmitter → Low Output
5
VREF
VREF
Reference Voltage Output
6
CANL
CANL
LOW−Level CAN Bus Line (Low in Dominant Mode)
7
CANH
CANH
HIGH−Level CAN Bus Line (High in Dominant Mode)
8
S
V33
Select Input for High Speed or Silent Mode; Internal Pulldown Current
3.3 V Supply for Digital I/O
3.3 V Interface
The pin number 8 is a digital CMOS input pin (standby)
on the AMIS−30660 device and is the I/O supply pin called
V33 for pin RxD on the AMIS−30663 product. Internally, on
AMIS−30663, the stand−by signal is forced to ground. This
means Pin 8 must be properly decoupled in application and
treated as a supply pin while performing ESD and latch−up
tests. The pullup on Pin TxD is connected via protection
diode to V33 and not to 5 V supply as in the AMIS−30660.
The AMIS−30663 may be used to interface with 3.3 V or
5 V controllers by using the V33 Pin. This pin may be
supplied with 3.3 V or 5 V to correspond with digital
interface voltage levels.
ELECTRICAL CHARACTERISTICS
Table 2. AMIS−30660 (5 V VERSION)
Symbol
Parameter
Conditions
Min
Typ
0.6 x VCC
0.75 x VCC
Max
Unit
RECEIVER DATA OUTPUT (Pin RxD)
VOH
HIGH−Level Output Voltage
IRXD = −10 mA
VOL
LOW−Level Output Voltage
IRXD = 6 mA
V
0.25
0.45
V
TRANSMITTER DATA INPUT (Pin TxD)
IIH
HIGH−Level Input Current
VTxD = VCC
−1
0
+1
mA
IIL
LOW−Level Input Current
VTxD = 0 V
−75
−200
−350
mA
Table 3. AMIS−30663 (3.3 V VERSION)
Symbol
Parameter
Conditions
Min
Typ
0.7 x V33
0.75 x V33
Max
Unit
RECEIVER DATA OUTPUT (Pin RxD)
VOH
HIGH−Level Output Voltage
IRXD = −10 mA
VOL
LOW−Level Output Voltage
IRXD = 5 mA
V
0.18
0.35
V
TRANSMITTER DATA INPUT (Pin TxD)
IIH
HIGH−Level Input Current
VTxD = V33
−1
0
+1
mA
IIL
LOW−Level Input Current
VTxD = 0 V
−50
−200
−300
mA
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2
AND8375/D
VBAT
IN
5V−reg
60 W
OUT
47 nF
VCC
VCC
S
RxD
CAN
controller
TxD
3
8
CANH
7
AMIS−
4
30660
6
1
VREF
5
GND
CAN
BUS
CANL
60 W
60 W
2
PC20040918.2
60 W
GND
47 nF
Figure 3. Typical Application Schematic for the AMIS−30660
VBAT
IN
5V−reg
60 W
OUT
60 W
47 nF
3.3V−
OUT
reg
IN
VCC
VCC
V33
8
RxD
3
4
CAN
7
AMIS−
controller
TxD
30663
5
6
1
CANH
VREF
CANL
2
PC20040919.1
GND
CAN
BUS
60 W
60 W
GND
47 nF
Figure 4. Typical Application Schematic for the AMIS−30663
TIMING CHARACTERISTICS
Table 4. AMIS−30660 TIMING CHARACTERISTICS
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
td(TxD−BUSon)
Delay TxD to Bus Active
Vs = 0 V
40
85
130
ns
td(TxD−BUSoff)
Delay TxD to Bus Inactive
Vs = 0 V
30
60
105
ns
td(BUSon−RxD)
Delay Bus Active to RxD
Vs = 0 V
25
55
105
ns
td(BUSoff−RxD)
Delay Bus Inactive to RxD
Vs = 0 V
65
100
135
ns
tpd(rec−dom)
Propagation Delay TxD to RxD from Recessive to Dominant
Vs = 0 V
70
230
ns
td(dom−rec)
Propagation Delay TxD to RxD from Dominant to Recessive
Vs = 0 V
100
245
ns
Table 5. AMIS−30663 TIMING CHARACTERISTICS
Min
Typ
Max
Unit
td(TxD−BUSon)
Symbol
Delay TxD to Bus Active
Parameter
40
85
110
ns
td(TxD−BUSoff)
Delay TxD to Bus Inactive
30
60
110
ns
td(BUSon−RxD)
Delay Bus Active to RxD
25
55
110
ns
td(BUSoff−RxD)
Delay Bus Inactive to RxD
65
100
135
ns
tpd(rec−dom)
Propagation Delay TxD to RxD from Recessive to Dominant
100
230
ns
td(dom−rec)
Propagation Delay TxD to RxD from Dominant to Recessive
100
245
ns
Table 6. SUPPLY VOLTAGE TO V33 PIN
Symbol
Parameter
Conditions
Min
Max
Unit
V33
I/O Interface Voltage
Absolute Maximum Range
−0.3
+7
V
V33
I/O Interface Voltage
Operating Range of V33 V Pin
2.9
3.6
V
All other characteristics can be found in the data sheet and are identical for both versions.
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3
AND8375/D
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