LTC1326/LTC1326-2.5
ELECTRICAL CHARACTERISTICS
LTC1326 Only V
CC3
= 3.3V, V
CC5
= 5V, V
CCA
= V
CC3
, T
A
= 25°C unless otherwise noted.
SYMBOL
V
OVR
PARAMETER
V
CC5
Reset Override Voltage
CONDITIONS
Override V
CC5
Ability to Assert RST (Note 4)
MIN
TYP
V
CC3
±0.025
MAX
UNITS
V
The
q
denotes specifications which apply over the full operating
temperature range.
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2:
All voltage values are with respect to GND.
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.
TYPICAL PERFOR A CE CHARACTERISTICS
I
VCC3
vs Temperature
25
24
23
22
5.0
4.8
4.6
4.4
I
VCC25
(µA)
I
VCC5
(µA)
4.2
4.0
3.8
3.6
3.4
3.2
80
100
3.0
– 60 – 40 – 20 0 20 40 60
TEMPERATURE (°C)
80
100
I
VCC3
(µA)
21
20
19
18
17
16
15
– 60 – 40 – 20 0 20 40 60
TEMPERATURE (°C)
V
CCA
Input Current vs Input Voltage
3
2
INPUT CURRENT (nA)
T
A
= 25°C
TRANSIENT DURATION (µs)
TRANSIENT DURATION (µs)
1
0
–1
–2
–3
0.8 0.85 0.9 0.95 1.0 1.05 1.1 1.15 1.2
INPUT VOLTAGE (V)
1326/2.5 G04
4
U W
1326/2.5 G01
I
VCC5
vs Temperature
(LTC1326)
3.00
2.95
2.90
2.85
2.80
2.75
2.70
2.65
2.60
2.55
I
VCC25
vs Temperature
(LTC1326-2.5)
2.50
– 60 – 40 – 20 0 20 40 60
TEMPERATURE (°C)
80
100
1326/2.5 G02
1326/2.5 G03
V
CC5
Transient Immunity
(LTC1326)
50
45
40
35
30
25
20
15
10
5
0
0.01
0.1
1
0.001
V
CC5
RESET COMPARATOR OVERDRIVE (V)
1326/2.5 G05
V
CC25
Transient Immunity
(LTC1326-2.5)
45
40
35
30
25
20
15
10
5
0
0.01
0.1
1
0.001
V
CC25
RESET COMPARATOR OVERDRIVE (V)
1326/2.5 G06
RESET OCCURS
ABOVE CURVE
T
A
= 25°C
RESET OCCURS
ABOVE CURVE
T
A
= 25°C
LINER [ LINEAR TECHNOLOGY ]
