5
ICM7228
Absolute Maximum Ratings Thermal Information
Supply Voltage (V
DD
- V
SS
). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6V
Digit Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mA
Segment Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mA
Input Voltage (Note 1) (Any Terminal) . . (V
SS
-0.3V)<V
IN
<(V
DD
+0.3V)
Operating Conditions
Operating Temperature Range . . . . . . . . . . . . . . . . . -40
o
C to 85
o
C
Thermal Resistance (Typical, Note 2)
JA
(
o
C/W)
PDIP Package* . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . .150
o
C
Maximum Storage Temperature Range . . . . . . . . . . -65
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . .300
o
C
(SOIC - Lead Tips Only)
*Pb-free PDIPs can be used for through hole wave solder
processing only. They are not intended for use in Reflow solder
processing applications.
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 the CMOS process used to fabricate these devices, connecting any terminal to a voltage greater than V
DD
or less then V
SS
may cause destructive device latchup. For this reason, it is recommended that no inputs row sources operating on a different
power supply be applied to the device before its own supply is established, and when using multiple supply systems the supply to the ICM7228
should be turned on first.
2.
JA
is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief 379 for details.
Electrical Specifications V
DD
= +5.0V ±10%, V
SS
= 0V, Unless Otherwise Specified
PARAMETER TEST CONDITIONS
T
A
= 25
o
C-40
o
C TO 85
o
C
UNITSMIN TYP MAX MIN TYP MAX
Supply Voltage Range, V
SUPPLY
Operating 4 - 6 4 - 6 V
Power Down Mode 2 - - 2 - -
Quiescent Supply Current, I
Q
Shutdown, ICM7228A, IMC7228B - 1 100 - 1 100 A
Shutdown, 7228C - 2.5 100 - 2.5 100
Operating Supply Current, I
DD
Common Anode, ICM7228A/C
Segments = ON; Outputs = OPEN
- 200 450 - 200 450 A
Common Anode, ICM7228A/C
Segments = OFF; Outputs = OPEN
- 100 450 - 100 450
Common Cathode, ICM7228B
Segments = ON; Outputs = OPEN
- 250 450 - 250 450
Common Cathode, ICM7228B
Segments = OFF; Outputs = OPEN
- 175 450 - 175 450
Digit Drive Current, I
DIG
Common Anode, ICM7228A/C
V
OUT
= V
DD
- 2.0V
200 - - 175 - - mA
Common Cathode, ICM7228B
V
OUT
= V
SS
+ 1.0V
50--40--
Digit Leakage Current, I
DLK
Shutdown Mode, V
OUT
= 2.0V
Common Anode, ICM7228A/C
- 1 100 - 1 100 A
Shutdown Mode, V
OUT
= 5.0V
Common Cathode, 7228B
- 1 100 - 1 100
Peak Segment Drive Current, I
SEG
Common Anode, ICM7228A/C
V
OUT
= V
SS
+ 1.0V
20 25 - 20 - - mA
Common Cathode, 7228B
V
OUT
= V
DD
- 2.0V
10 12 - 10 - -
Segment Leakage Current, I
SLK
Shutdown Mode, V
OUT
= V
DD
Common Anode, ICM7228A/C
- 1 50 - 1 50 A
Shutdown Mode, V
OUT
= V
SS
Common Cathode, ICM7228B
- 1 50 - 1 50
