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TPS380XX25 Fiches technique(PDF) 4 Page - Texas Instruments

No de pièce TPS380XX25
Description  ULTRA-SMALL SUPPLY VOLTAGE SUPERVISORS
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Site Internet  http://www.ti.com
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TPS380XX25 Fiches technique(HTML) 4 Page - Texas Instruments

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FUNCTION/TRUTH TABLE, TPS380x
L
RESET
H
L
L
0
VDD>VIT
1
0
1
L
MR
H
H
L
VDD
30 k
R2
_
+
R1
VDD
GND
RESET
MR
TPS380x
Oscillator
Reference
Voltage
of 1.14 V
Reset
Logic
+
Timer
TPS3800-xx
TPS3801-xx
TPS3802-xx
SLVS219C – AUGUST 1999 – REVISED JULY 2003
TIMING REQUIREMENTS
at R
L = 1 MΩ, CL = 50 pF, TA = 25°C
parameter
TEST CONDITIONS
min
TYP
max
unit
at SENSE
VDD = 1.6 V,VIH = 1.1 × VIT-, VIL = 0.9 × VIT-
1
µs
tw
Pulse width
at VDD
VDD = VIT- + 0.2 V, VDD = VIT- -0.2 V
3
at MR
VDD ≥ VIT- + 0.2 V, VIL = 0.3 × VDD, VIH = 0.7 × VDD
100
ns
SWITCHING CHARACTERISTICS
at R
L = 1 MΩ, CL = 50 pF, TA = 25°C
parameter
TEST CONDITIONS
min
TYP
max
unit
TPS3801T50
15
25
35
VDD ≥ VIT- + 0.2 V,
TPS3800
60
95
140
td
RESET recovery delay time
MR
≥ 0.7 × V
DD
ms
TPS3801
120
200
280
See timing diagram
TPS3802
240
380
560
VDD ≥ VIT- + 0.2 V,
MR to RESET delay
VIL = 0.3 × VDD,
15
ns
Propagation (delay) time, high-to-low-level
VIH = 0.7 × VDD
tPHL
output
VDD to RESET delay
VIL = VIT- - 0.2 V,
1
µs
VIH = VIT- + 0.2 V
SENSE to RESET
FUNCTIONAL BLOCK DIAGRAM
Figure 1. functional block diagram
4


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