Datasheet

TPS3813J25, TPS3813L30
TPS3813K33, TPS3813I50
www.ti.com SLVS331G –DECEMBER 2000–REVISED OCTOBER 2013
RECOMMENDED OPERATING CONDITIONS
At specified temperature range.
MIN MAX UNIT
V
DD
Supply voltage 2 6 V
V
I
Input voltage 0 V
DD
+ 0.3 V
V
IH
High-level input voltage 0.7 × V
DD
V
V
IL
Low-level input voltage 0.3 × V
DD
V
Δt/ΔV Input transition rise and fall rate 100 ns/V
t
w
Pulse width of WDI trigger pulse 50 ns
T
A
Operating free-air temperature range –40 +85 °C
ELECTRICAL CHARACTERISTICS
Over recommended operating free-air temperature range (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
DD
= 2 V to 6 V, I
OL
= 500 μA 0.2
V
OL
Low-level output voltage V
DD
= 3.3 V I
OL
= 2 mA 0.4 V
V
DD
= 6 V, I
OL
= 4 mA 0.4
Power up reset voltage
(1)
V
DD
≥ 1.1 V, I
OL
= 50 μA 0.2 V
TPS3813J25 2.2 2.25 2.3
TPS3813L30 2.58 2.64 2.7
Negative-going input threshold
V
IT
T
A
= –40°C to +85°C V
voltage
(2)
TPS3813K33 2.87 2.93 3
TPS3813I50 4.45 4.55 4.65
TPS3813J25 30
TPS3813L30 35
V
hys
Hysteresis mV
TPS3813K33 40
TPS3813I50 60
WDI, WDR WDI = V
DD
= 6 V, WDR = V
DD
= 6 V –25 25
I
IH
High-level input current
WDT WDT = V
DD
= 6 V, V
DD
> V
IT
, RESET = High –100 100
nA
WDI, WDR WDI = 0 V, WDR = 0 V, V
DD
= 6 V –25 25
I
IL
Low-level input current
WDT WDT = 0 V, V
DD
> V
IT
, RESET = High –100 100
I
OH
High-level output current V
DD
= V
IT
+ 0.2 V, V
OH
= V
DD
25 nA
V
DD
= 2 V output unconnected 9 13
I
DD
Supply current μA
V
DD
= 5 V output unconnected 20 25
C
i
Input capacitance V
I
= 0 V to V
DD
5 pF
(1) The lowest supply voltage at which RESET becomes active. t
r
, V
DD
≥ 15 μs/V.
(2) To ensure best stability of the threshold voltage, a bypass capacitor (ceramic, 0.1 μF) should be placed near to the supply terminals.
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