Datasheet

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ELECTRICAL CHARACTERISTICS
TPIC1021
LIN Physical Interface
SLIS113C – OCTOBER 2004 – REVISED JULY 2005
V
SUP
= 7 V to 27 V, T
A
= -40°C to 125°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP
(1)
MAX UNIT
SUPPLY
Operational supply voltage
(2)
7 14 27 V
Nominal supply line voltage
(2)
7 14 18 V
V
SUP
undervoltage threshold
(2)
4.5 V
I
CC
Supply Current Normal Mode, EN = 1, Bus domi- 1.2 2.5 mA
nant (total bus load > 500 Ω )
(3)
Standby Mode, EN = 0, Bus domi- 1 2.1 mA
nant (total bus load > 500 Ω )
(3)
Normal Mode, EN = 1, Bus recess- 300 500 µA
ive
Standby Mode, EN = 0, Bus recess- 300 500 µA
ive
Low Power Mode, EN = 0, V
SUP
< 20 50 µA
14 V, NWake = V
SUP
, LIN = V
SUP
Low Power Mode, EN = 0, 14 V < 50 100 µA
V
SUP
< 27 V, NWake = V
SUP
, LIN =
V
SUP
RXD OUTPUT PIN
V
O
Output voltage -0.3 5.5 V
I
OL
Low-level output current, open drain LIN = 0 V, RXD = 0.4 V 3.5 mA
I
IKG
Leakage current, high-level LIN = V
SUP
, RXD = 5 V -5 0 5 µA
TXD INPUT PIN
V
IL
Low-level input voltage
(2)
-0.3 0.8 V
V
IH
High-level input voltage
(2)
2 5.5 V
V
IT
Input threshold hysteresis voltage
(2)
30 500 mV
Pull-down resistor 125 350 800 k Ω
I
IL
Low-level input current TXD = 0 -5 0 5 µA
LIN PIN (Referenced to V
SUP
)
V
OH
High-level output voltage
(2)
LIN recessive, TXD = High, I
O
= 0 V
SUP
-1V V
mA
V
OL
Low-level output voltage
(2)
LIN dominant, TXD = Low, I
O
= 40 0 0.2 × V
SUP
V
mA
Pull-up resistor to V
SUP
20 30 60 k Ω
I
L
Limiting current TXD = Low 50 150 250 mA
I
IKG
Leakage current LIN = V
SUP
-5 0 5 µA
V
IL
Low-level input voltage
(2)
LIN dominant 0 × V
SUP
0.4 × V
SUP
V
V
IH
High-level input voltage
(2)
LIN recessive 0.6 × V
SUP
V
SUP
V
V
IT
Input threshold voltage
(2)
0.4 × V
SUP
0.5 × V
SUP
0.6 × V
SUP
V
V
hys
Hysteresis voltage
(2)
0.05 × V
SUP
0.175 × V
SUP
V
V
IL
Low-level input voltage for 0 0.4 × V
SUP
V
wake-up
(2)
EN PIN
V
IL
Low-level input voltage
(2)
-0.3 0.8 V
V
IH
High-level input voltage
(2)
2 5.5 V
V
hys
Hysteresis voltage
(2)
30 500 mV
(1) Typical values are give for V
SUP
= 14 V at 25°C.
(2) All voltages are defined with respect to ground; positive currents flow into the TPIC1021 device.
(3) In the dominant state the supply current increases as the supply voltage increases due to the integrated LIN slave termination
resistance. At higher voltages the majority of supply current is through the termination resistance. The minimum resistance of the LIN
slave termination is 20 k Ω so the maximum supply current attributed to the termination is: I
SUP (dom) max termination
≈ (V
SUP
–
(V
LIN_Dominant
+0.7V) / 20 k Ω .
8