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參數(shù)資料
| 型號： | 74F579 |
| 廠商： | Fairchild Semiconductor Corporation |
| 元件分類： | 通用總線功能 |
| 英文描述： | 8-Bit Bidirectional Binary Counter with 3-STATE Outputs |
| 中文描述： | 8與3位雙向二進制計數(shù)器態(tài)輸出 |
| 文件頁數(shù)： | 3/14頁 |
| 文件大小： | 112K |
| 代理商： | 74F579 |
Philips Semiconductors
Product specification
74F579
8-bit bidirectional binary counter (3-State)
1992 May 04
3
LOGIC SYMBOL
13
V
= Pin 16
GND = Pin 6
3
4
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
6
1,2,3,4,
5,6,7,8
18
1
EN3
2,5,7, +/C8
2,4,7–
[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
R9
CTR DIV 256
R1
&
&
M2[LOAD]
1
1
1
1
1
&
EN6
1
G7
M4[DOWN]
M5[UP]
1
1
FUNCTION TABLE
INPUTS
OPERATING MODE
MR
SR
CS
PE
CEP
CET
U/D
OE
CP
X
X
H
X
X
X
X
X
X
I/O0 to I/O7 in high impedance (PE disabled)
X
X
L
H
X
X
X
H
X
I/O0 to I/O7 in high impedance
X
X
L
H
X
X
X
L
X
Flip-flop output appears on I/On lines
L
X
X
X
X
X
X
X
X
Asynchronous reset for all flip-flops
H
L
X
X
X
X
X
X
↑
Synchronous reset for all flip-flops
H
H
L
L
X
X
X
X
↑
Parallel load all flip-flops
H
H
(not LL)
H
X
X
X
↑
Hold
H
H
(not LL)
X
H
X
X
↑
Hold (TC held High)
H
H
(not LL)
L
L
H
X
↑
Count up
H
H
(not LL)
L
L
L
X
↑
Count down
H
L
X
↑
(not LL)
=
=
=
=
=
High voltage level
Low voltage level
Don’t care
Low-to-High clock transition
CS and PE should never be Low voltage level at the same time.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 74F579_00 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:8-Bit Bidirectional Binary Counter with 3-STATE Outputs |
| 74F579D | 制造商:undefined 功能描述: |
| 74F579PC | 功能描述:計數(shù)器移位寄存器 8-Bit Bidir Bin Ctr RoHS:否 制造商:Texas Instruments 計數(shù)器類型: 計數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| 74F579PC 92 | 制造商:n/a 功能描述:74F579 |
| 74F579PC_Q | 功能描述:計數(shù)器 IC 8-Bit Bidir Bin Ctr RoHS:否 制造商:NXP Semiconductors 計數(shù)器類型:Binary Counters 邏輯系列:74LV 位數(shù):10 計數(shù)法: 計數(shù)順序: 工作電源電壓:1 V to 5.5 V 工作溫度范圍:- 40 C to + 125 C 封裝 / 箱體:SOT-109 封裝:Reel |
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