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參數(shù)資料
| 型號： | 74F579SC |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 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： | F/FAST SERIES, SYN POSITIVE EDGE TRIGGERED 8-BIT BIDIRECTIONAL BINARY COUNTER, PDSO20 |
| 封裝： | 0.300 INCH, MS-013, SOIC-20 |
| 文件頁數(shù)： | 3/14頁 |
| 文件大?。?/td> | 112K |
| 代理商： | 74F579SC |
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(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| 74F579SCX | 功能描述:計(jì)數(shù)器移位寄存器 8-Bit Bidir Bin Ctr RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類型: 計(jì)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(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| 74F579SCX | 制造商:Fairchild Semiconductor Corporation 功能描述:IC COUNTERS/MULTIPLIERS/DIVIDERS LOGIC |
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| 74F579SJX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Synchronous Up/Down Counter |
| 74F582 WAF | 制造商:Texas Instruments 功能描述: |
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