ICM7249_01 Datasheet, PDF (3/9 Pages) Intersil Corporation – 5 1/2 Digit LCD, Micro-Power Event/Hour Meter

ICM7249
Absolute Maximum Ratings
Supply Voltage (V_DD - V_SS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V
Input Voltage, Pins 43 - 48 (Note 1) . . (V_SS - 0.3V) to (V_DD + 0.3V)
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . -40^oC to 85^oC
Thermal Information
Thermal Resistance (Typical, Note 2)
θ_JA (^oC/W)
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50
Maximum Junction Temperature. . . . . . . . . . . . . . . . . . . . . . . 150^oC
Maximum Storage Temperature Range . . . . . . . . . . -65^oC to 150^oC
Maximum Lead Temperature (Soldering, 10s) . . . . . . . . . . . . 300^oC
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1. Due to the SCR structure inherent in junction-isolated CMOS devices. the circuit can be put in a latchup mode it large currents are injected
into device inputs or outputs. For this reason special care should be taken in a system with multiple power supplies to prevent voltages
being applied to inputs or outputs before power is applied. If only inputs are affected, latchup also can be prevented by limiting the current
into the input terminal to less than 1mA.
2. θ_JA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
Temperature = -40^oC to 85^oC, V_DD = 2.5V
Specifications Measured at Temperature =
2to5^o5C.5Van, dV^SV^SDD=
0V, Unless Otherwise Specified. Typical
= 2.8V, Unless Otherwise Specified
PARAMETER
Operating Voltage, V_DD
Operating Current, I_DD
INPUT CURRENT
C0 - C3, I_IN
S/S, I_SS
DT, I_DT
INPUT VOLTAGE
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Note 1
2.5
-
5.5
V
All Inputs = V_DD or GND, Note 2
V_DD = 2.8V
-
V_DD = 5.5V
-
1.0
10.0
µA
4.0
20.0
µA
All Inputs V_DD or GND
V_DD = 2.8V
Note 3
0.0
-
1
µA
0.5
1.5
3.0
µA
40.0
-
110
µA
C0 - C3, DT, S/S
V_IL
V_IH
Segment Output Voltage
V_OL
I_OL = 1µA
V_OH
I_OH = 1µA
Backplane Output Voltage
V_OL
I_OL = 10µA
V_OH
I_OH = 10µA
OSCILLATOR STABILITY
Temperature = 25^oC, V_DD = 2.5V to 5.5V
Temperature = -40^oC to 85^oC, V_DD = 2.5V to 5.5V
S/S PULSE WIDTH
-
-
0.7V_DD
-
-
-
V_DD - 0.8
-
-
-
V_DD - 0.8
-
-
0.1
-
5
0.3V_DD
V
-
V
0.8
V
-
V
0.8
V
-
V
-
ppm
-
ppm
High-Pass Filter (Modes 0 - 3), t_HP
5
-
10,000
µs
Debounce (Modes 4, 6, 8, 10), t_DE
10,000
-
-
µs
Without Debounce (Modes 5, 7, 9, 11), t_DE
5
-
-
µs
NOTES:
1. Internal reset to 00000 requires a maximum V_DD rise time of 1µs. Longer rise times at power-up may cause improper reset.
2. Operating current is measured with the LCD disconnected, and input current I_SS and I_DT supplied externally.
3. Inputs C0 - C3 are latched internally and draw no DC current after switching. During switching, a 90µA peak current may be drawn for 10ns.
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