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TPS3705-50DGN Datasheet(PDF) 7 Page - Texas Instruments

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No. de pieza TPS3705-50DGN
Descripción Electrónicos  Processor Supervisory Circuits With Power-Fail
Download  28 Pages
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS3705-50DGN Datasheet(HTML) 7 Page - Texas Instruments

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TPS3705-30, TPS3705-33, TPS3705-50, TPS3707-30, TPS3707-50
www.ti.com
SLVS184D – NOVEMBER 1998 – REVISED MAY 2016
Product Folder Links: TPS3705-30 TPS3705-33 TPS3705-50 TPS3707-30 TPS3707-50
Submit Documentation Feedback
Copyright © 1998–2016, Texas Instruments Incorporated
Electrical Characteristics (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
IDD
Supply current
TPS3705-xx, VDD = 2 V to 6 V, MR = VDD,
MR, WDI and outputs unconnected
30
50
µA
TPS3707-xx, VDD = 2 V to 6 V, MR = VDD,
MR, WDI and outputs unconnected
20
50
Ci
Input capacitance
VI = 0 V to VDD
5
pF
7.6 Timing Requirements
at RL = 1 MΩ, CL = 50 pF, TA = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
NOM
MAX
UNIT
tw
Pulse width
At VDD, VDD = VIT+ + 0.2 V, VDD = VIT– – 0.2 V
6
µs
At MR and WDI, VDD ≥ VIT+ + 0.2 V, VIL = 0.3 × VDD, VIH = 0.7 × VDD
100
ns
7.7 Switching Characteristics
at RL = 1 MΩ, CL = 50 pF, TA = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
tt(out)
Watchdog time out
VDD ≥ VIT+ + 0.2 V, see Figure 1
1.1
1.6
2.3
s
td
Delay time
VDD ≥ VIT+ + 0.2 V, see Figure 1
140
200
280
ms
tPHL
Propagation (delay) time,
high-to-low-level output
MR to RESET delay, VDD ≥ VIT+ + 0.2 V,
VIL = 0.3 × VDD, VIH = 0.7 × VDD
50
250
ns
tPLH
Propagation (delay) time,
low-to-high-level output
MR to RESET delay (TPS3707-xx only)
VDD ≥ VIT+ + 0.2 V, VIL = 0.3 × VDD, VIH = 0.7 × VDD
50
250
ns
tPHL
Propagation (delay) time,
high-to-low-level output
VDD to RESET delay
3
5
µs
tPLH
Propagation (delay) time,
low-to-high-level output
VDD to RESET delay (TPS3707-xx only)
3
5
µs
tPHL
Propagation (delay) time,
high-to-low-level output
PFI to PFO delay, VDD = 2 V to 6 V
0.5
1
µs
tPLH
Propagation (delay) time,
low-to-high-level output
PFI to PFO delay, VDD = 2 V to 6 V
0.5
1
µs


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