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TPS3820-50DBVR датащи(PDF) 6 Page - Texas Instruments

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номер детали TPS3820-50DBVR
подробное описание детали  Processor Supervisory Circuits
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
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TPS3820-50DBVR датащи(HTML) 6 Page - Texas Instruments

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TPS382x-xx
TPS382xA-xx
SLVS165J – APRIL 1998 – REVISED APRIL 2013
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
TPS382x-25
TPS382x-30
–400
Output short-circuit
IOS
RESET
VDD = VIT, max + 0.2 V, VO = 0 V
µA
TPS382x-33
current(3)
TPS382xA-33
TPS382x-50
–800
IDD
Supply current
WDI, MR, and Outputs unconnected
15
25
µA
Internal pullup resistor at MR
52
k
Ω
Ci
Input capacitance at MR, WDI
VI = 0 V to 5.5 V
5
pF
(3)
The RESET short-circuit current is the maximum pullup current when RESET is driven low by a
μP bidirectional reset pin.
TIMING REQUIREMENTS AT
At RL = 1 MΩ, CL = 50 pF, TA = 25°C
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
at VDD
VDD = VIT− + 0.2 V, VDD = VIT– – 0.2 V
6
μs
tw
Pulse width
at MR
VDD ≥ VIT− + 0.2 V, VIL = 0.3 x VDD, VIH = 0.7 x VDD
1
μs
at WDI
VDD ≥ VIT− + 0.2 V, VIL = 0.3 x VDD, VIH = 0.7 x VDD
100
ns
SWITCHING CHARACTERISTICS
At RL = 1 MΩ, CL = 50 pF, TA = 25°C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
TPS3820
112
200
300
ms
VDD ≥ VIT− + 0.2 V,
ttout
Watchdog time out
See timing diagram
TPS3823/4/8, TPS3823A
0.9
1.6
2.5
s
TPS3820
15
25
37
VDD ≥ VIT− +0.2 V,
td
Delay time
ms
See timing diagram
TPS3823/4/5/8, TPS3823A
120
200
300
VDD ≥ VIT− +0.2 V,
MR to RESET delay
VIL = 0.3 x VDD,
0.1
(TPS3820/3/5/8, TPS3823A)
Propagation (delay) time,
VIH = 0.7 x VDD
tPHL
µs
high-to-low-level output
VIL = VIT– –0.2 V,
VDD to RESET delay
25
VIH = VIT– + 0.2 V
VDD ≥ VIT− +0.2 V,
MR to RESET delay (TPS3824/5)
VIL = 0.3 x VDD,
0.1
Propagation (delay) time,
VIH = 0.7 x VDD
tPLH
µs
low-to-high-level output
VIL = VIT– –0.2 V,
VDD to RESET delay
25
(TPS3824/5)
VIH = VIT– + 0.2 V
6
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Product Folder Links: TPS382x-xx TPS382xA-xx


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