Datasheet

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TPIC1021
LIN Physical Interface
SLIS113C – OCTOBER 2004 – REVISED JULY 2005
ELECTRICAL CHARACTERISTICS (continued)
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
Pull-down resistor 125 350 800 k Ω
I
IL
Low-level input current EN = 0 V -5 0 5 µA
INH PIN
V
o
DC output voltage Transient voltage -0.3 V
SUP
+0.3 V
I
O
Ouptut current -50 2 mA
R
on
On state resistance Between V
SUP
and INH, INH = 2 mA 25 40 100 Ω
drive, Normal or Standby Mode
I
IKG
Leakage current Low Power mode, 0 < INH < V
SUP
-5 0 5 µA
NWake PIN
V
IL
Low-level input voltage
(4)
-0.3 V
SUP
-3.3 V
V
IH
High-level input voltage
(4)
V
SUP
-1 V
SUP
+0.3 V
Pull-up current NWake = 0 V -40 -10 -4 µA
I
IKG
Leakage current V
SUP
= NWake -5 0 5 µA
THERMAL SHUTDOWN
Shutdown junction thermal tempera- 185 °C
ture
AC CHARACTERISTICS
D1 Duty cycle 1
(5) (6)
TH
REC(max)
= 0.744×V
SUP
, 0.396
TH
DOM(max)
= 0.581×V
SUP
, V
SUP
=
7.0 V to 18 V, t
BIT
= 50 µs (20 kbps),
See Figure 4
D2 Duty cycle 2
(5) (6)
TH
REC(max)
= 0.284×V
SUP
, 0.581
TH
DOM(max)
= 0.422×V
SUP
, V
SUP
=
7.6 V to 18 V, t
BIT
= 50 µs (20 kbps),
See Figure 4
D3 Duty cycle 3
(5) (6)
TH
REC(max)
= 0.778×V
SUP
, 0.417
TH
DOM(max)
= 0.616×V
SUP
, V
SUP
=
7.0 V to 18 V, t
BIT
= 96 µs (10.4
kbps), See Figure 4
D4 Duty cycle 4
(5) (6)
TH
REC(max)
= 0.251×V
SUP
, 0.590
TH
DOM(max)
= 0.389×V
SUP
, V
SUP
=
7.6 V to 18 V, t
BIT
= 96 µs (10.4
kbps), See Figure 4
t
rx_pdr
Receiver rising propagation delay R
L
= 2.4 k Ω , C
L
= 20 pF, See 6 µs
time Figure 4
t
rx_pdf
Receiver falling propagation delay R
L
= 2.4 k Ω , C
L
= 20 pF, See 6 µs
time Figure 4
t
rx_sym
Symmetry of receiver propagation wrt falling edge, See Figure 4 -2 2 µs
delay time (rising edge)
t
NWake
NWake filter time for local wake-up See Figure 4 25 50 100 µs
t
LINBUS
LIN wake-up filter time (dominant See Figure 4 25 50 100 µs
time for wake-up via LIN bus)
t
DST
Dominant state timeout
(7)
See Figure 4 6 9 14 ms
(4) All voltages are defined with respect to ground; positive currents flow into the TPIC1021 device.
(5) Duty cycle = t
BUS_rec(min)
/ (2×t
BIT
)
(6) Duty Cycles: LIN Driver bus load conditions (CLINBUS, RLINBUS): Load1 = 1 nF, 1 k Ω ; Load2 = 6.8 nF, 660 Ω ; Load3 = 10 nF, 500 Ω .
Duty Cycles 3 and 4 are defined for 10.4 kbps operation. The TPIC1021 also meets these lower speed requirements, while it is capable
of of the higher speed 20.0 kbps operation as specified by Duty Cycles 1 and 2. SAEJ2602 derives propagation delay equations from
the LIN 2.0 duty cycle definitions, for details please refer to the SAEJ2602 specification.
(7) Dominant state timeout will limit the minimum data rate to 2.4 kbps.
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