6
TCAN4420
ZHCSH93 –DECEMBER 2017
www.ti.com.cn
Copyright © 2017, Texas Instruments Incorporated
6.6 Power Supply Characteristics
over operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
I
CC
Supply Current Normal
Mode
Dominant
See 图 6, TXD = 0 V, R
L
= 60 Ω, C
L
=
open,
55 70
mA
Dominant
See 图 6, TXD = 0 V, R
L
= 50 Ω, C
L
=
open,
60 80
Dominant with
bus Fault
See 图 6, TXD = 0 V, STBx = 0 V, CANH
= –25 V, R
L
= open, C
L
= open
100 180
Recessive
See 图 6, TXD = V
CC
, R
L
= 60 Ω, C
L
=
open, R
CM
= open, S or STB = 0 V
10 20
UV
VCC
Under voltage detection on V
CC
for protected mode 3.5 4.4 V
Hysteresis voltage 200 mV
UV
VIO
Under voltage detection on V
IO
for protected mode 1.3 2.7 V
P
D
Average Power
Dissapation
V
CC
= V
IO
= 5 V, T
J
= 25℃, R
L
= 60 Ω, Input to TXD at 250
kHz, 25% duty cycle square wave, C
L_RXD
= 15 pF. Typical
CAN operating conditions at 500 kbps with 25% transmission
(domiant) rate.
115
mW
V
CC
= V
IO
= 5.5 V, T
J
= 150℃, R
L
= 50 Ω. Input to TXD at
500 kHz, 50% duty cycle square wave, C
L_RXD
= 15 pF.
Typical high load CAN operating conditions at 1 Mbps with
50% transmission (domiant) rate and loaded network.
268
Thermal Shutdown Temperature 185
℃
Thermal Shutdown Hysterisis 15
6.7 AC and DC Electrical Characteristics
All typical values are at 25°C and supply voltages of V
CC
= 5 V. R
L
= 60 Ω over operating free-air temperature range (unless
otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Driver Electrical Characteristics
V
O(D)
Bus output voltage
(dominant)
CANH
See 图 8 and 图 9, TXD = 0 V, R
L
= 60 Ω,
C
L
= open, R
CM
= open
2.75 4.5 V
CANL 0.5 2.25 V
V
O(R)
Bus output voltage (recessive)
See 图 6 and 图 9, TXD = V
CC
, R
L
= open
(no load), R
CM
= open
2 0.5 x V
CC
3 V
V
OD(D)
Differential output voltage (dominant)
See 图 6 and 图 9, TXD = 0 V, 50 Ω ≤ R
L
≤ 65 Ω, C
L
= open, R
CM
= open
4.75 V ≤ V
CC
≤ 5.25 V
1.5 3 V
See 图 6 and 图 9, TXD = 0 V, 50 Ω ≤ R
L
≤ 65 Ω, C
L
= open, R
CM
= open
4.5 V ≤ V
CC
≤ 5.5 V
1.3 3.2 V
V
OD(R)
Differential output voltage (recessive)
See 图 6 and 图 9, TXD = V
CC
, R
L
= 60
Ω, C
L
= open, R
CM
= open
–120 12 mV
See图 6 and 图 9,TXD = V
CC
, R
L
= open,
C
L
= open, R
CM
= open
–50 50 mV
V
SYM
Output symmetry (dominant or recessive)
(V
CC
- V
O(CANH)
- V
O(CANL)
)
See 图 6 and 图 9, R
L
= 60 Ω, C
L
= open,
R
CM
= open
–400 400 mV
I
OS(DOM)
Short-circuit steady-state output current,
Dominant
See 图 6 and 图 12, V
(CAN_H)
≤ –5 V,
CANL = open, TXD = 0 V
–115 mA
See 图 6 and 图 12, V
(CAN_L)
= 40 V,
CANH = open, TXD = 0 V
115 mA
I
OS(REC)
Short-circuit steady-state output current,
Recessive
See 图 6 and 图 12, –27 V ≤ V
BUS
≤ 32 V,
V
BUS
= CANH = CANL
–5 5 mA
Receiver Electrical Characteristics
V
IT
Input threshold voltage
See 图 10
500 900 mV
V
HYS
Hysteresis voltage for input threshold 120 mV
V
CM
Common Mode Range –12 12 V
I
IOFF(LKG)
Power-off (unpowered) bus input leakage
current
CANH = CANL = 5 V, V
CC
to GND via 0
Ω
5 µA
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