參數(shù)資料
型號: 74LV161
廠商: NXP Semiconductors N.V.
元件分類: 通用總線功能
英文描述: Presettable synchronous 4-bit binary counter; asynchronous reset
中文描述: 可預(yù)置同步4位二進制計數(shù)器;異步復(fù)位
文件頁數(shù): 3/16頁
文件大?。?/td> 148K
代理商: 74LV161
Philips Semiconductors
Presettable synchronous 4-bit binary counter;
asynchronous reset
Product specification
74LV161
1997 May 15
3
PIN CONFIGURATION
SV00569
1
2
3
4
5
6
MR
CP
D
0
D
1
D
2
D
3
VCC
TC
Q
0
16
15
14
13
12
11
7
8
GND
CET
PE
10
9
CEP
Q
1
Q
2
Q
3
PIN DESCRIPTION
PIN
NUMBER
SYMBOL
FUNCTION
1
MR
Asynchronous master reset (active LOW)
2
CP
Clock input
(LOW-to-HIGH, edge-triggered)
3, 4, 5, 6
D
0
to D
3
CEP
Data inputs
7
Count enable inputs
8
GND
Ground (0 V)
9
PE
Parallel enable input (active LOW)
10
CET
Count enable carry input
14, 13, 12,
11
Q
0
to Q
3
Flip-flop outputs
15
TC
Terminal count output
16
V
CC
Positive supply voltage
LOGIC SYMBOL (IEEE/IEC)
SV00571
CTR4
4CT = 15
1, 2D
M1
R
G3
G4
1
10
7
9
2
3
4
5
6
15
11
12
13
14
C2/1,3,4+
LOGIC SYMBOL
SV00570
14
13
12
11
15
Q
0
Q
1
Q
2
Q
3
MR
CP
CET
CEP
PE
D
3
D
2
D
1
D
0
TC
9
2
10
7
1
6
5
4
3
FUNCTIONAL DIAGRAM
SV00572
PE
CP
TC
CET
CEP
MR
7
10
15
2
1
9
D
3
Q
3
D
2
Q
2
D
1
Q
1
D
0
Q
0
BINARY
COUNTER
PARALLEL LOAD
CIRCUITRY
6
11
5
12
4
13
3
14
相關(guān)PDF資料
PDF描述
74LV161D Presettable synchronous 4-bit binary counter; asynchronous reset
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