參數(shù)資料
型號: 74LV4040N
廠商: NXP SEMICONDUCTORS
元件分類: 通用總線功能
英文描述: 12-stage binary ripple counter
中文描述: LV/LV-A/LVX/H SERIES, ASYN NEGATIVE EDGE TRIGGERED 12-BIT UP BINARY COUNTER, PDIP16
文件頁數(shù): 3/14頁
文件大?。?/td> 133K
代理商: 74LV4040N
Philips Semiconductors
Product specification
74LV4040
12-stage binary ripple counter
1998 Jun 23
3
PIN CONFIGURATION
Q
11
Q
5
Q
4
Q
6
Q
3
Q
2
Q
1
GND
V
CC
Q
10
Q
9
Q
8
Q
7
MR
CP
Q
0
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
SV00316
Figure 1. Pin configuration
PIN DESCRIPTION
PIN
NUMBER
SYMBOL
FUNCTION
9, 7, 6, 5, 3,
2, 4, 13, 12,
14, 15, 1
Q
0
to Q
11
Parallel outputs
8
GND
Ground (0V)
10
CP
Clock input (HIGH-to-LOW, edge-
triggered)
11
MR
Master reset input (active HIGH)
16
V
CC
Positive supply voltage
LOGIC SYMBOL (IEEE/IEC)
+
CT=0
14
15
12
1
13
5
2
5
4
3
10
7
11
9
CTR12
0
11
CT
SV00318
Figure 2. IEC Logic symbol
LOGIC SYMBOL
Q
9
Q
10
Q
11
Q
3
Q
2
Q
4
Q
1
Q
8
Q
7
Q
6
Q
5
MR
CP
Q
0
14
15
12
1
13
5
2
6
4
3
11
7
10
9
SV00317
Figure 3. Logic symbol
FUNCTIONAL DIAGRAM
Q
9
Q
10
Q
11
Q
3
Q
2
Q
4
Q
1
Q
8
Q
7
Q
6
Q
5
MR
CP
Q
0
14
15
12
1
13
5
2
5
4
3
11
7
10
9
T
C
D
12-STAGE COUNTER
SV00319
Figure 4. Functional diagram
LOGIC DIAGRAM
T
Q
Q0
Q
Q
Q1
Q11
CP
MR
Q
Q
Q
T
T
R
D
R
D
R
D
FF0
FF3
FF11
SV00320
Figure 5. Logic diagram
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