Datasheet

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
I
OS
RESET V
DD
= V
IT, max
+ 0.2 V, V
O
= 0 V µA
TPS382x-33
current
(3)
TPS382xA-33
TPS382x-50 –800
I
DD
Supply current WDI, MR, and Outputs unconnected 15 25 µA
Internal pullup resistor at MR 52 kΩ
C
i
Input capacitance at MR, WDI V
I
= 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 R
L
= 1 MΩ, C
L
= 50 pF, T
A
= 25°C
PARAMETER TEST CONDITIONS MIN MAX UNIT
at VDD V
DD
= V
IT−
+ 0.2 V, V
DD
= V
IT–
– 0.2 V 6 μs
t
w
Pulse width at MR V
DD
≥ V
IT−
+ 0.2 V, V
IL
= 0.3 x V
DD
, V
IH
= 0.7 x V
DD
1 μs
at WDI V
DD
≥ V
IT−
+ 0.2 V, V
IL
= 0.3 x V
DD
, V
IH
= 0.7 x V
DD
100 ns
SWITCHING CHARACTERISTICS
At R
L
= 1 MΩ, C
L
= 50 pF, T
A
= 25°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
TPS3820 112 200 300 ms
V
DD
≥ V
IT−
+ 0.2 V,
t
tout
Watchdog time out
See timing diagram
TPS3823/4/8, TPS3823A 0.9 1.6 2.5 s
TPS3820 15 25 37
V
DD
≥ V
IT−
+0.2 V,
t
d
Delay time ms
See timing diagram
TPS3823/4/5/8, TPS3823A 120 200 300
V
DD
≥ V
IT−
+0.2 V,
MR to RESET delay
V
IL
= 0.3 x V
DD
, 0.1
(TPS3820/3/5/8, TPS3823A)
Propagation (delay) time,
V
IH
= 0.7 x V
DD
t
PHL
µs
high-to-low-level output
V
IL
= V
IT–
–0.2 V,
V
DD
to RESET delay 25
V
IH
= V
IT–
+ 0.2 V
V
DD
≥ V
IT−
+0.2 V,
MR to RESET delay (TPS3824/5) V
IL
= 0.3 x V
DD
, 0.1
Propagation (delay) time,
V
IH
= 0.7 x V
DD
t
PLH
µs
low-to-high-level output
V
IL
= V
IT–
–0.2 V,
V
DD
to RESET delay
25
(TPS3824/5)
V
IH
= V
IT–
+ 0.2 V
6 Submit Documentation Feedback Copyright © 1998–2013, Texas Instruments Incorporated
Product Folder Links: TPS382x-xx TPS382xA-xx