AMIS-42671 High-Speed CAN Transceiver
For Long Networks
Table 7: DC and Timing Characteristics (continued)
Symbol
Parameter
C
i(CANH)
Input capacitance at pin CANH
C
i(CANL)
Input capacitance at pin CANL
C
i(dif)
Differential input capacitance
I
LI(CANH)
Input leakage current at pin CANH
I
LI(CANL)
Input leakage current at pin CANL
V
CM-peak
Common-mode peak during transition from
dom
→
rec or rec
→
dom
V
CM-step
Difference in common-mode between
dominant and recessive state
Power-on-Reset (POR)
PORL
POR level
Thermal Shutdown
T
j(sd)
Shutdown junction temperature
Timing Characteristics (see Figure 7 and Figure
)
t
d(TxD-BUSon)
Delay TxD to bus active
t
d(TxD-BUSoff)
Delay TxD to bus inactive
t
d(BUSon-RxD)
Delay bus active to RxD
t
d(BUSoff-RxD)
Delay bus inactive to RxD
t
pd(rec-dom)
Propagation delay TxD to RxD from
recessive to dominant
t
d(dom-rec)
Propagation delay TxD to RxD from
dominant to recessive
Conditions
V
TxD
= V
CC
; not tested
V
TxD
= V
CC
; not tested
V
TxD
= V
CC
; not tested
V
CC
= 0V; V
CANH
= 5V
V
CC
= 0V; V
CANL
= 5V
See Figure 9 and Figure 10
Min.
Typ.
7.5
7.5
3.75
170
170
Max.
20
20
10
250
250
500
Data Sheet
10
10
-500
-150
2.2
150
Unit
pF
pF
pF
µA
µA
mV
See Figure 9 and Figure 10
CANH, CANL, V
ref
in tri-
state below POR level
150
3.5
160
85
60
55
100
4.7
180
130
105
105
135
245
245
V
°C
mV
V
s
= 0V
V
s
= 0V
V
s
= 0V
V
s
= 0V
V
s
= 0V
V
s
= 0V
40
30
25
65
70
100
ns
ns
ns
ns
ns
ns
8.5 Measurement Set-ups and Definitions
+5 V
100 nF
3
V
CC
7
1
TxD
CANH
1 nF
V
REF
1 nF
AMIS-
42671
RxD
4
8
2
5
Transient
Generator
6
CANL
PC20071002.1
20 pF
AUTB
GND
Figure 5: Test Circuit for Transients
V
RxD
High
Low
Hysteresis
PC20040829.7
0,5
0,9
V
i(dif)(hys)
Figure 6: Hysteresis of the Receiver
AMI Semiconductor
– Oct. 07, Rev. 1.0
7
www.amis.com
Specifications subject to change without notice
AMI [ AMI SEMICONDUCTOR ]
