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TPS3813L30DBV Fiches technique(PDF) 8 Page - Texas Instruments

No de pièce TPS3813L30DBV
Description  PROCESSOR SUPERVISORY CIRCUITS WITH WINDOW-WATCHDOG
Download  16 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPS3813L30DBV Fiches technique(HTML) 8 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
TIMING REQUIREMENTS
SWITCHING CHARACTERISTICS
TPS3813J25, TPS3813L30
TPS3813K33, TPS3813I50
SLVS331B – DECEMBER 2000 – REVISED JUNE 2005
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VDD = 2 V to 6 V, IOL = 500 µA
0.2
VOL
Low-level output voltage
VDD = 3.3 V IOL = 2 mA
0.4
V
VDD = 6 V, IOL = 4 mA
0.4
Power up reset voltage (1)
VDD ≥ 1.1 V, IOL= 50 µA
0.2
V
TPS3813J25
2.2
2.25
2.3
TPS3813L30
2.58
2.64
2.7
Negative-going input threshold
VIT
TA = –40°C–85°C
V
voltage (2)
TPS3813K33
2.87
2.93
3
TPS3813I50
4.45
4.55
4.65
TPS3813J25
30
TPS3813L30
35
Vhys
Hysteresis
mV
TPS3813K33
40
TPS3813I50
60
WDI, WDR
WDI = VDD = 6 V, WDR = VDD = 6 V
–25
25
IIH
High-level input current
WDT
WDT = VDD = 6 V, VDD > VIT, RESET = High
–100
100
nA
WDI, WDR
WDI = 0 V, WDR = 0 V, VDD = 6 V
–25
25
IIL
Low-level input current
WDT
WDT = 0 V, VDD > VIT, RESET = High
–100
100
IOH
High-level output current
VDD = VIT + 0.2 V, VOH = VDD
25
nA
VDD = 2 V output unconnected
9
13
IDD
Supply current
µA
VDD = 5 V output unconnected
20
25
Ci
Input capacitance
VI = 0 V to VDD
5
pF
(1)
The lowest supply voltage at which RESET becomes active. tr, VDD ≥ 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.
at R
L = 1 MΩ, CL = 50 pF, TA = –40°C to 85°C
PARAMETER
TEST CONDITIONS
MIN
TYP MAX
UNIT
tw
Pulse width at VDD
VDD = VIT–+ 0.2 V, VDD = VIT–– 0.2 V
3
µs
at R
L = 1 MΩ, CL = 50 pF, TA = -40°C to 85°C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
td
Delay time
VDD ≥ VIT + 0.2 V, See timing diagram
20
25
30
ms
WDT = 0 V
0.2
0.25
0.3
s
tt(out)
Watchdog time-out
Upper limit
WDT = VDD
2
2.5
3
WDT = programmable (1)
See (2)
ms
WDR = 0 V, WDT = 0 V
1:31.8
WDR = 0 V, WDT = VDD
1:32
WDR = 0 V, WDT = programmable
1:25.8
Watchdog window ratio
WDR = VDD, WDT = 0 V
1:124.9
WDR = VDD, WDT = VDD
1:127.7
WDR = VDD, WDT = programmable
1:64.5
Propagation (delay) time,
tPHL
VDD to RESET delay
VIL = VIT - 0.2 V, VIH = VIT + 0.2 V
30
50
µs
high-to-low-level output
(1)
155 pF < C(ext) < 63 nF
(2)
(C(ext) ÷ 15.55 pF + 1) x 6.25 ms
8


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