参数资料
型号: N74F579N,602
厂商: NXP Semiconductors
文件页数: 8/14页
文件大小: 0K
描述: IC COUNTER 8BIT BINARY 20DIP
标准包装: 720
系列: 74F
逻辑类型: 二进制计数器
方向: 上,下
元件数: 1
每个元件的位元数: 8
复位: 异步
计时: 同步
计数速率: 115MHz
触发器类型: 正边沿
电源电压: 4.5 V ~ 5.5 V
工作温度: 0°C ~ 70°C
安装类型: 通孔
封装/外壳: 20-DIP(0.300",7.62mm)
供应商设备封装: 20-DIP
包装: 管件
其它名称: 933781130602
N74F579N
N74F579N-ND
Philips Semiconductors
Product specification
74F579
8-bit bidirectional binary counter (3-State)
2000 Dec 18
3
LOGIC SYMBOL
13
VCC = Pin 16
GND = Pin 6
34
5
7
8
9
10
1
18
SF01086
CEP
I/O0
I/O1
I/O4
I/O5
I/O6
I/O7
CP
CS
MR
SR
U/D
I/O2
I/O3
PE
12
20
19
14
2
17
11
OE
CET
15
TC
LOGIC SYMBOL (IEEE/IEC)
SF01087
1
3
4
5
2
8
9
10
7
1,2,3,4,
5,6,7,8
18
u1
EN3
2,5,7, +/C8
[1]
[2]
[4]
[8]
[16]
[32]
[64]
[128]
15
3,5,6,8 CT=256
3,4,6,8 CT=0
14
20
17
13
11
19
12
2,4,7–
R9
CTR DIV 256
&
M2[LOAD]
R1
1
&
EN6
1
G7
M4[DOWN]
M5[UP]
1
FUNCTION TABLE
INPUTS
OPERATING MODE
MR
SR
CS
PE
CEP
CET
U/D
OE
CP
X
H
X
I/O0 to I/O7 in high impedance (PE disabled)
X
L
H
X
H
X
I/O0 to I/O7 in high impedance
X
L
H
X
L
X
Flip-flop output appears on I/On lines
L
X
Asynchronous reset for all flip-flops
H
L
X
Synchronous reset for all flip-flops
H
L
X
Parallel load all flip-flops
H
(not LL)
H
X
Hold
H
(not LL)
X
H
X
Hold (TC held High)
H
(not LL)
L
H
X
Count up
H
(not LL)
L
X
Count down
H
=
High voltage level
L
=
Low voltage level
X
=
Don’t care
=
Low-to-High clock transition
(not LL)
=
CS and PE should never be Low voltage level at the same time.
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