ICM7226 Intersil Corporation, ICM7226 Datasheet - Page 17

• Manufacturer Part Number: ICM7226
• Description: 8-Digit Multi-Function Frequency Counter/Timer
• Manufacturer: Intersil Corporation

OPEN FREQ
FUNCTION
INPUT
CLOSED
SWITCH
PERIOD
V
DD
CP
CE
ECL11C90
V
V
DD
DD
M1
D7 IN
2
D IN
MS
QTTL
CD4016
0.1 F
CONT 2
CONT 2
F
FIGURE 23. 100MHz FREQUENCY, PERIOD COUNTER
RESET
INPUT
OUT
OUT
N.O.
V
DD
ICM7226A, ICM7226B
10k
10k
D1
D3
D2
D4
D5
D6
D7
D8
39pF
8
10
11
12
13
14
15
16
17
18
19
20
D8
1
2
3
4
5
6
7
8
9
10k
9-31
ICM7226B
D7
V
3k
DD
D6
D5
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
DP
D4
g
e
a
d
b
c
f
100k
V
V
DD
DD
V
10k
DD
D3
HOLD
39pF
DISPLAY
OFF
D4
D1
V
D2
D3
DD
D2
D4
22M
V
DD
DISPLAY
1N914s
TEST
V
D2
D1
DD
10MHz
CRYSTAL
39pF
(TYP)
8
4
OVERFLOW
b
d
g
a
c
e
f
D1
2N2222
D8
10k
10k
3
V
DD