Datasheet

LTC2908
3
2908fd
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
RT50
5V, 5% Reset Threshold V1 Input Threshold
l
4.600 4.675 4.750 V
V
RT33
3.3V, 5% Reset Threshold V2 Input Threshold
l
3.036 3.086 3.135 V
V
RT25
2.5V, 5% Reset Threshold V3 Input Threshold
l
2.300 2.338 2.375 V
V
RT18
1.8V, 5% Reset Threshold V4 Input Threshold
l
1.656 1.683 1.710 V
V
RTADJ
ADJ, 5% Reset Threshold V
ADJ1
, V
ADJ2
Input Threshold
l
0.492 0.500 0.508 V
(LTC2908-A1) The l denotes specifi cations which apply over the full
operating temperature range, otherwise specifi cations are T
A
= 25°C, V
CC
= 5V unless otherwise noted. (Note 2)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
RT33
3.3V, 5% Reset Threshold V1 Input Threshold
l
3.036 3.086 3.135 V
V
RT25
2.5V, 5% Reset Threshold V2 Input Threshold
l
2.300 2.338 2.375 V
V
RT18
1.8V, 5% Reset Threshold V3 Input Threshold
l
1.656 1.683 1.720 V
V
RT15
1.5V, 5% Reset Threshold V4 Input Threshold
l
1.380 1.403 1.425 V
V
RTADJ
ADJ, 5% Reset Threshold V
ADJ1
, V
ADJ2
Input Threshold
l
0.492 0.500 0.508 V
(LTC2908-B1) The l denotes specifi cations which apply over the full operating temperature range, otherwise specifi cations are
T
A
= 25°C, V
CC
= 3.3V unless otherwise noted. (Note 2)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
RT25
2.5V, 5% Reset Threshold V1 Input Threshold
l
2.300 2.338 2.375 V
V
RTADJ
ADJ, 5% Reset Threshold V
ADJ1
, V
ADJ2
, V
ADJ3
, V
ADJ4
, V
ADJ5
,
Input Threshold
l
0.492 0.500 0.508 V
(LTC2908-C1) The l denotes specifi cations which apply over the full operating temperature range, otherwise specifi cations are
T
A
= 25°C, V
CC
= 2.5V unless otherwise noted. (Note 2)
The l denotes specifi cations which apply over the full operating temperature range, otherwise specifi cations are T
A
= 25°C. V
CC
= 5V
for the LT2908-A1, V
CC
= 3.3V for the LTC2908-B1or V
CC
= 2.5V for the LTC2908-C1, unless otherwise noted. (Notes 2, 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Internal Supply Voltage RST in Correct Logic State
l
0.5 6 V
I
V1
V1 Input Current (Note 4) V1 = 5.0V (LTC2908-A1)
V1 = 3.3V (LTC2908-B1)
V1 = 2.5V (LTC2908-C1)
l
l
l
26
24
22
70
70
70
μA
μA
μA
I
V2
V2 Input Current (Note 4) V2 = 3.3V (LTC2908-A1)
V2 = 2.5V (LTC2908-B1)
l
l
10
8
30
30
μA
μA
I
V3
V3 Input Current V3 = 2.5V (LTC2908-A1)
V3 = 1.8V (LTC2908-B1)
l
l
2
2
5
5
μA
μA
I
V4
V4 Input Current V4 = 1.8V (LTC2908-A1)
V4 = 1.5V (LTC2908-B1)
l
l
2
2
5
5
μA
μA
I
VADJ
V
ADJ1
, V
ADJ2,
V
ADJ3,
V
ADJ4,
V
ADJ5
Input Current
V
ADJ1
= V
ADJ2
= V
ADJ3
= V
ADJ4
= V
ADJ5
=
0.55V
l
±15 nA