ICM7555, ICM7556
Electrical Specifications Applies to ICM7555 and ICM7556, unless otherwise specified (Continued)
(NOTE 4)
T
= +25°C
-55°C TO +125°C
A
PARAMETER
Reset Voltage
SYMBOL
TEST CONDITIONS
= 2V to 15V
MIN
TYP MAX MIN
TYP MAX UNITS
V
V
V
V
V
V
V
V
V
V
0.4
1.0
10
0.2
1.2
50
V
nA
nA
V
RST
DD
DD
DD
DD
DD
DD
DD
DD
DD
Reset Current
I
= 15V
= 15V
= 15V, I
RST
Discharge Leakage
Output Voltage
I
10
50
DIS
V
= 20mA
0.4
0.2
1.0
0.4
1.25
0.5
OL
OH
DIS
SINK
= 5V, I
SINK
= 3.2mA
V
V
= 15V, I
= 0.8mA
14.3
4.0
14.6
4.3
14.2
3.8
V
SOURCE
= 5V, I
= 0.8mA
V
SOURCE
= 15mA
Discharge Output Voltage
V
= 5V, I
0.2
0.4
0.6
0.4
V
SINK
= 15V, I
= 15mA
V
SINK
Supply Voltage (Note 3)
Output Rise Time (Note 3)
Output Fall Time (Note 3)
V
Functional Operation
2.0
18.0
3.0
16.0
V
DD
t
R
R
= 10M, C = 10pF, V
= 5V
75
75
1
ns
ns
MHz
R
L
L
DD
t
= 10M, C = 10pF, V
= 5V
F
L
L
DD
Oscillator Frequency
(Note 3)
f
V
= 5V, R = 470Ω, R = 270Ω,
DD A B
MAX
C = 200pF
NOTES:
3. These parameters are based upon characterization data and are not tested.
4. Applies only to military temperature range product (M suffix).
Functional Diagram
V
DD
FLIP-FLOP
RESET
8
4
OUTPUT
DRIVERS
R
R
COMPARATOR
A
THRESHOLD
+
6
5
OUTPUT
3
-
CONTROL
VOLTAGE
7
DISCHARGE
1
n
+
TRIGGER
2
-
COMPARATOR
B
R
1
GND
NOTE: This functional diagram reduces the circuitry down to its simplest equivalent components. Tie down unused inputs.
TRUTH TABLE
THRESHOLD VOLTAGE
TRIGGER VOLTAGE
RESET
Low
OUTPUT
Low
DISCHARGE SWITCH
Don’t Care
2
Don’t Care
1
On
On
> / (V+)
3
> / (V+)
3
High
Low
2
1
< / (V+)
3
> / (V+)
3
High
Stable
High
Stable
Off
1
Don’t Care
< / (V+)
High
3
NOTE: RESET will dominate all other inputs: TRIGGER will dominate over THRESHOLD.
FN2867.9
August 24, 2006
4
INTERSIL [ Intersil ]
