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TPS3305-18DRG4 Datasheet(PDF) 4 Page - Texas Instruments

No. de pieza TPS3305-18DRG4
Descripción Electrónicos  DUAL PROCESSOR SUPERVISORS
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TPS3305-18DRG4 Datasheet(HTML) 4 Page - Texas Instruments

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MR
t
t
t
t
V
(nom)
V
IT
-
SENSEn
WDI
RESET
0
1
0
1
0
1
t
t(out)
t
d
t
d
t
d
t
d
RESETbecauseofWDI
RESETbecauseof MR
RESETbecauseofSENSEbelowV
IT
-
RESETbecauseofSENSEbelowV
IT
-
RESETbecause
ofSENSEbelowV
IT
-
TIMING REQUIREMENTS
SWITCHING CHARACTERISTICS
TPS3305
SLVS198C – DECEMBER 1998 – REVISED MARCH 2008
TIMING DIAGRAM
At VDD = 2.7V to 6V, RL = 1MΩ, CL = 50pF, and TJ = +25°C.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SENSEn
VSENSEnL = VIT– –0.2V, VSENSEnH = VIT+ +0.2V
6
µs
tw
Pulse width
MR
100
ns
VIH = 0.7 × VDD, VIL = 0.3 × VDD
WDI
100
ns
At VDD = 2.7V to 6V, RL = 1MΩ, CL = 50pF, and TJ = +25°C.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VI(SENSEn) ≥ VIT+ +0.2V, MR ≥ 0.7 ×
tt(out)
Watchdog time-out
VDD
1.1
1.6
2.3
s
See Timing Diagram
VI(SENSEn) ≥ VIT+ +0.2V, MR ≥ 0.7 × VDD
td
Delay time
140
200
280
ms
See Timing Diagram
Propagation (delay) time,
MR to RESET,
VI(SENSEn) ≥ VIT+ +0.2V,
tPHL
200
500
ns
high-to-low level output
MR to RESET
VIH = 0.7 × VDD, VIL = 0.3 × VDD
Propagation (delay) time,
MR to RESET,
VI(SENSEn) ≥ VIT+ +0.2V,
tPLH
200
500
ns
low-to-high level output
MR to RESET
VIH = 0.7 × VDD, VIL = 0.3 × VDD
Propagation (delay) time,
SENSEn to RESET,
VIH = VIT+ +0.2V, VIL = VIT– –0.2V,
tPHL
1
5
µs
high-to-low level output
SENSEn to RESET
MR
≥ 0.7
× V
DD
Propagation (delay) time,
SENSEn to RESET,
VIH = VIT+ +0.2V, VIL = VIT– –0.2V,
tPLH
1
5
µs
low-to-high level output
SENSEn to RESET
MR
≥ 0.7
× V
DD
4
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Product Folder Link(s): TPS3305


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