參數(shù)資料
型號(hào)： ICM7226A
廠商： Intersil Corporation
元件分類(lèi)： 通用總線功能
英文描述： 8-Digit, Multi-Function, Frequency Counter/Timer
中文描述： 8位數(shù)字，多功能，頻率計(jì)數(shù)器/計(jì)時(shí)器
文件頁(yè)數(shù)： 4/19頁(yè)
文件大?。?/td> 173K
代理商： ICM7226A
9-18
Absolute Maximum Ratings
Thermal Information
Maximum Supply Voltage (V
DD
- V
SS
). . . . . . . . . . . . . . . . . . . .6.5V
Maximum Digit Output Current. . . . . . . . . . . . . . . . . . . . . . . .400mA
Maximum Segment Output Current . . . . . . . . . . . . . . . . . . . . .60mA
Voltage On Any Input or
Output Terminal (Note 1) . . . . . . . . . . . . . . V
DD
+0.3V to V
SS
-0.3V
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . -25
o
C to 85
o
C
Thermal Resistance (Typical, Note 2)
CERDIP Package . . . . . . . . . . . . . . . .
PDIP Package . . . . . . . . . . . . . . . . . . .
Maximum Junction Temperature
CERDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
o
C
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
o
C
Maximum Storage Temperature Range . . . . . . . . . .-55
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s). . . . . . . . . . . . . 300
o
C
θ
JA
(
o
C/W)
45
50
θ
JC
(
o
C/W)
9
N/A
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. Destructive latchup may occur if input signals are applied before the power supply is established or if inputs or outputs are forced to
voltages exceeding V
DD
or V
SS
by 0.3V.
2.
θ
JA
is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
V
DD
= 5.0V, T
A
= 25
o
C, Unless Otherwise Specified
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Operating Supply Current, I
DD
Display Off, Unused Inputs to V
SS
-25
o
C to 85
o
C, INPUT A,
INPUT B Frequency at f
MAX
-25
o
C to 85
o
C
4.75V < V
DD
< 6.0V, Figure 9
Function = Frequency, Ratio,
Unit Counter
-
2
5
mA
Supply Voltage Range (V
DD
-V
SS
), V
SUPPLY
4.75
-
6.0
V
Maximum Frequency INPUT A, Pin 40, f
A(MAX)
10
14
-
MHz
Function = Period, Time Interval
-25
o
C to 85
o
C
4.75V < V
DD
< 6.0V, Figure 10
-25
o
C to 85
o
C
4.75V < V
DD
< 6.0V, Figure 1
-25
o
C to 85
o
C
4.75V < V
DD
< 6.0V
V
DD
-4.75V, T
A
= 85
o
C
2.5
-
-
MHz
Maximum Frequency INPUT B, Pin 2, f
B(MAX)
2.5
-
-
MHz
Minimum Separation INPUT A to INPUT B,
Time Interval Function
250
-
-
ns
Oscillator Frequency and External Oscillator Frequency,
f
OSC
0.1
-
10
MHz
Oscillator Transconductance, g
M
2000
-
-
μ
S
Multiplex Frequency, f
MUX
f
OSC
= 10MHz
-
500
-
Hz
Time Between Measurements
f
OSC
= 10MHz
-
200
-
ms
Input Rate of Charge, dV
IN
/dt
Inputs A, B
-
15
-
mV/
μ
s
Input Voltages: Pins 2, 19, 33, 39, 40, 35
Input Low Voltage, V
IL
-25
o
C to 85
o
C
-
-
1.0
V
Input High Voltage, V
lH
3.5
-
-
V
Pins 2, 39, 40, Input Leakage, A, B, I
ILK
-
-
20
μ
A
Input Resistance to V
DD
Pins 19, 33, R
IN
V
IN
= V
DD
-1.0V
100
400
-
k
Input Resistance to V
SS
Pin 31, R
IN
V
IN
= +1.0V
50
100
-
k
Output Current
Low Output Current, Pins 3, 5-7, 17, 18, 32, 38, I
OL
V
OL
= +0.4V
400
-
-
μ
A
High Output Current, Pins 5-7, 17, 18, 32, H
OL
V
OH
= +2.4V
100
-
-
μ
A
High Output Current, Pins 3, 38, H
OL
V
OH
= V
DD
-0.8V
265
-
-
μ
A
ICM7226A
Segment Driver: Pins 8-11, 13-16
Low Output Current, I
OL
V
O
= +1.5V
25
35
-
mA
High Output Current, I
OH
V
O
= V
DD
-1.0V
-
100
-
μ
A
ICM7226A, ICM7226B
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