ꢀ ꢁ ꢂ ꢃ ꢄꢅ ꢆ ꢇꢈ ꢈꢉ ꢀ ꢁ ꢂꢃ ꢄ ꢅ ꢃ ꢇꢈ ꢈ ꢉ ꢀꢁ ꢂ ꢃ ꢄ ꢅ ꢊ ꢇꢈ ꢈꢉ ꢀ ꢁꢂꢃ ꢄ ꢅ ꢋ ꢇꢈ ꢈ ꢉ ꢀ ꢁꢂꢃ ꢄ ꢅ ꢄ ꢇꢈ ꢈ
ꢁ ꢌꢍꢎ ꢏꢂꢂ ꢍꢌ ꢂ ꢐꢁ ꢏꢌꢑ ꢒ ꢂꢍ ꢌꢓ ꢎꢒ ꢌ ꢎꢐꢒ ꢀ ꢂ
ꢔ
SLVS165E – APRIL 1998 – REVISED DECEMBER 2002
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted) (continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
WDI = V
,
DD
time average (dc = 88%)
I
I
Average high-level input current
120
IH(AV)
WDI
WDI = 0.3 V, V
DD
time average (dc = 12%)
= 5.5 V
Average low-level input current
High-level input current
–15
140
–40
IL(AV)
WDI
MR
WDI = V
MR = V
190
DD
µA
I
× 0.7,
IH
IL
DD
–60
V
= 5.5 V
DD
WDI = 0.3 V, V
WDI
= 5.5 V
DD
= 5.5 V
140
190
I
Low-level input current
MR
MR = 0.3 V, V
DD
–110
–160
TPS382x-25
TPS382x-30
TPS382x-33
TPS382x-50
–400
Output short-circuit current
(see Note 4)
V
V
= V + 0.2 V,
IT, max
DD
= 0 V
I
I
RESET
µA
µA
OS
O
–800
WDI and MR unconnected,
Outputs unconnected
Supply current
15
25
DD
Internal pullup resistor at MR
Input capacitance at MR, WDI
52
5
kΩ
C
V = 0 V to 5.5 V
I
pF
i
NOTE 4: The RESET short-circuit current is the maximum pullup current when RESET is driven low by a µP bidirectional reset pin.
timing requirements at R = 1 MΩ, C = 50 pF, T = 25°C
L
L
A
PARAMETER
at V
TEST CONDITIONS
MIN
MAX
UNIT
µs
V
DD
V
DD
V
DD
= V
≥ V
≥ V
+ 0.2 V,
V
V
V
= V - 0.2 V
6
DD
IT–
IT–
IT–
DD IT-
t
w
Pulse width
at MR
+ 0.2 V,
+ 0.2 V,
= 0.3 x V
,
,
V
V
= 0.7 x V
= 0.7 x V
1
µs
IL
IL
DD
IH
DD
at WDI
= 0.3 x V
100
ns
DD
IH
DD
switching characteristics at R = 1 MΩ, C = 50 pF, T = 25°C
L
L
A
PARAMETER
TEST CONDITIONS
≥ V + 0.2 V,
MIN
TYP
200
1.6
MAX
310
2.5
UNIT
ms
s
TPS3820
112
0.9
15
V
DD
IT–
t
t
Watchdog time out
Delay time
tout
See Timing Diagram
TPS3823/4/8
TPS3820
25
37
V
≥V
+0.2 V,
DD IT–
See timing diagram
ms
d
TPS3823/4/5/8
120
200
300
V
V
V
≥V +0.2 V,
DD IT–
MR to RESET delay
(TPS3820/3/5/8)
=0.3 x V
,
0.1
25
IL
DD
=0.7 x V
Propagation (delay) time,
high-to-low-level output
t
IH
DD
µs
PHL
PLH
V
V
= V - 0.2 V,
IL
IH
IT-
= V + 0.2 V
V
DD
to RESET delay
IT-
V
V
V
≥V +0.2 V,
DD IT–
IL
IH
MR to RESET delay (TPS3824/5)
=0.3 x V
,
0.1
25
DD
=0.7 x V
Propagation (delay) time,
low-to-high-level output
DD
t
µs
V
V
= V - 0.2 V,
IL
IH
IT-
= V + 0.2 V
V
DD
to RESET delay (TPS3824/5)
IT-
6
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