TH8055 Datasheet, PDF (10/15 Pages) Micro Electronics – Single Wire CAN Transceiver

TH8055
Single Wire CAN Transceiver
Bus loading requirements
Parameter
Symbol
Min
Typ
Max
Unit
Number of system nodes
2
32
Network distance between any two ECU nodes
Bus length
60
m
Node series Inductor Resistance
Rind
2.3
Ω
EMC Inductor voltage drop
Vind
0.3
V
Ground offset voltage
Vgoff
0.8
V
Device capacitance (unit load)
Cul
198
220
242
pF
Network total capacitance
Ctl
396
13700
pF
Device resistance (unit load)
Rul
9009
9100
9191
Ω
Device resistance (min load)
Rmin
2000
Ω
Network total resistance
Rtl
270
4596
Ω
Network time constant ^[1]
τ
1
4
µs
High speed mode network resistance to GND
Rload
100
185
Ω
Timing Diagrams
V_TxD
50%
t
t_T
V_CANH
70%
30%
V_RxD
50%
t_R
t_D
t
t_F
t_DR
t
Figure 2 - Input/Output Timing
[1] _{The network time constant incorporates the bus wiring capacitance. The minimum value is selected to limit radiated}
emission. The maximum value is selected to ensure proper communication modes. Not all combinations of R and C are
possible.
390108055
Rev. 1.1a
Page 10 of 15
Jan 2002