Datasheet

4
LTC1326/LTC1326-2.5
132625fc
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OH
RST Output Voltage High (Note 3) I
SOURCE
= 1µA ● V
CC3
– 1 V
SRST Output Voltage High (Note 3) I
SOURCE
= 1µA ● V
CC3
– 1 V
RST Output Voltage High I
SOURCE
= 600µA ● V
CC3
– 1 V
t
PHL
Prop Delay RST to RST C
RST
= 20pF 25 ns
High Input to Low Output
t
PLH
Prop Delay RST to RST C
RST
= 20pF 45 ns
Low Input to High Output
V
OVR
V
CC5
Reset Override Voltage Override V
CC5
Ability to Assert RST (Note 4) V
CC3
±0.025 V
Note 3: The output pins SRST and RST have weak internal pull-ups to
V
CC3
of 6µA typ. However, external pull-up resistors may be used when
faster rise times are required.
Note 4: The V
CC5
reset override voltage is valid for an operating range less
than approximately 4.15V. Above this point the override is turned off and
the V
CC5
pin functions normally.
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All voltage values are with respect to GND.
TYPICAL PERFOR A CE CHARACTERISTICS
UW
TEMPERATURE (°C)
15
I
VCC3
(µA)
16
18
19
20
25
22
1326/2.5 G01
17
23
24
21
–60
–20
20
40
–40 0
60
80
100
I
VCC3
vs Temperature
TEMPERATURE (°C)
2.50
I
VCC25
(µA)
2.55
2.65
2.70
2.75
3.00
2.85
1326/2.5 G03
2.60
2.90
2.95
2.80
–60
–20
20
40
–40 0
60
80
100
I
VCC25
vs Temperature
(LTC1326-2.5)
TEMPERATURE (°C)
I
VCC5
(µA)
5.0
4.8
4.6
4.4
4.2
4.0
3.8
3.6
3.4
3.2
3.0
1326/2.5 G02
–60
–20
20
40
–40 0
60
80
100
I
VCC5
vs Temperature
(LTC1326)
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. LTC1326 Only V
CC3
= 3.3V, V
CC5
= 5V, V
CCA
= V
CC3
, T
A
= 25°C unless
otherwise noted.