Datasheet

ELECTRICAL CHARACTERISTICS
TPIC1021A-Q1
SLIS117A – AUGUST 2007 – REVISED JUNE 2009 .......................................................................................................................................................... www.ti.com
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
Device is operational beyond the LIN 2.0
Operational supply voltage
(2)
defined nominal supply line voltage range 7 14 27
of 7 V < V
SUP
< 18 V
V
Normal and standby modes 7 14 18
Nominal supply line voltage
Sleep mode 7 12 18
V
SUP
undervoltage threshold 4.5 6.2
Normal mode, EN = High, Bus dominant
(total bus load where R
LIN
≥ 500 Ω and
1.2 7.5 mA
C
LIN
≤ 10 nF (see Figure 7 )
(3)
, INH = V
SUP
,
NWake = V
SUP
Standby mode, EN = Low, Bus dominant
(total bus load, where R
LIN
≥ 500 Ω and
1 2.1 mA
C
LIN
≤ 10 nF (see Figure 7 )
(3)
, INH = V
SUP
,
NWake = V
SUP
Normal mode, EN = High, Bus recessive,
450 775
I
CC
Supply current
LIN = V
SUP
, INH = V
SUP
, NWake = V
SUP
µ A
Standby mode, EN = Low, Bus recessive,
450 775
LIN = V
SUP
, INH = V
SUP
, NWake = V
SUP
Sleep mode, EN = 0,
7 V < V
SUP
≤ 12 V, LIN = V
SUP
, 15 30 µ A
NWake = V
SUP
Sleep mode, EN = 0,
12 V < V
SUP
< 27 V, LIN = V
SUP
, 50 µ A
NWake = V
SUP
RXD OUTPUT PIN
V
O
Output voltage – 0.3 5.5 V
Low-level output current,
I
OL
LIN = 0 V, RXD = 0.4 V 3.5 mA
open drain
I
IKG
Leakage current, high-level LIN = V
SUP
, RXD = 5 V – 5 0 5 µ A
TXD INPUT PIN
V
IL
Low-level input voltage – 0.3 0.8
V
V
IH
High-level input voltage 2 5.5
Input threshold hysteresis
V
IT
30 500 mV
voltage
Pulldown resistor 125 350 800 k Ω
I
IL
Low-level input current TXD = Low – 5 0 5 µ A
(1) Typical values are given for V
SUP
= 14 V at 25 ° C, except for low power mode where typical values are given for V
SUP
= 12 V at 25 ° C.
(2) All voltages are defined with respect to ground; positive currents flow into the TPIC1021A 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
+ 0.7 V) / 20 k Ω
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