Datasheet

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SLVS340D − DECEMBER 2000 − REVISED JULY 2008
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9
TIMING REQUIREMENTS AT R
L
= 1 MΩ, C
L
= 50 PF, T
A
= −40°C TO +85°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
w
Pulse width SENSE V
IH
= V
IT
+ 0.2 V, V
IL
= V
IT
− 0.2 V 6 µs
SWITCHING CHARACTERISTICS AT R
L
= 1 MΩ, C
L
= 50 PF, T
A
= −40°C TO +85°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
d
Delay time
V
SENSE
≥ V
IT
+ 0.2 V,
MR ≥ 0.7 x V
DD
,
See timing diagram
60 100 140 ms
t
PLH
Propagation (delay) time,
low-to-high-level output
50% RESET to 50% CEOUT V
OUT
= V
IT
15
µs
50% CEIN to 50% CEOUT,
V
DD
= 1.8 V 5 15
50% CEIN to 50% CEOUT,
C
L
= 50 pF only (see Note 5)
V
DD
= 3.3 V 1.6 5
ns
Propagation (delay) time,
C
L
= 50 pF only (see Note 5)
V
DD
= 5 V 1 3
ns
t
PHL
Propagation (delay) time,
high-to-low-level output
SENSE to RESET
V
IL
= V
IT
− 0.2 V,
V
IH
= V
IT
+ 0.2 V
2 5
µs
MR to RESET
V
SENSE
≥ V
IT
+ 0.2 V,
V
IL
= 0.3 x V
DD
,
V
IH
= 0.7 x V
DD
0.1 1
µs
Transition time V
DD
to V
BAT
V
IH
=V
BAT
+ 0.2 V,
V
IL
= V
BAT
− 0.2 V,
V
BAT
< V
IT
3
µs
(1)
Assured by design