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參數(shù)資料
| 型號： | 74F657SDC |
| 英文描述： | Single 8-bit Bus Transceiver |
| 中文描述： | 單8位總線收發(fā)器 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大小： | 82K |
| 代理商： | 74F657SDC |
www.fairchildsemi.com
2
7
Logic Symbols
74F651
IEEE/IEC
74F651
74F652
IEEE/IEC
74F652
Unit Loading/Fan Out
Function Table
H
=
HIGH Voltage Level
L
=
LOW Voltage Level
Note 1:
The data output functions may be enabled or disabled by various signals at OEAB or OEBA inputs. Data input functions are always enabled,
i.e., data at the bus pins will be stored on every LOW-to-HIGH transition on the clock inputs.
X
=
Immaterial
=
LOW-to-HIGH Clock Transition
Pin Names
Description
U.L.
Input I
IH
/I
IL
Output I
OH
/I
OL
20
μ
A/
0.6 mA
12 mA/64 mA (48 mA)
20
μ
A/
0.6 mA
20
μ
A/
0.6 mA
20
μ
A/
0.6 mA
HIGH/LOW
1.0/1.0
600/106.6 (80)
1.0/1.0
1.0/1.0
1.0/1.0
A
0
–
A
7
, B
0
–
B
7
A and B Inputs/
3-STATE Outputs
Clock Inputs
Select Inputs
Output Enable Inputs
CPAB, CPBA
SAB, SBA
OEAB, OEBA
Inputs
Inputs/Outputs (Note 1)
Operating Mode
OEAB OEBA CPAB CPBA SAB SBA
A
0
thru A
7
Input
B
0
thru B
7
Input
L
L
X
H
L
L
L
L
H
H
H
H
H
H
H
X
L
L
L
H
H
L
H or L H or L
X
X
X
X
X
X
X
X
L
H
H
X
X
X
X
X
X
L
H
X
X
H
Isolation
Store A and B Data
H or L
Input
Input
Not Specified Input
Output
Output
Not Specified Store A, Hold B
Output
Store A in Both Registers
Hold A, Store B
Input
Store B in Both Registers
Input
Real-Time B Data to A Bus
Store B Data to A Bus
Output
Real-Time A Data to B Bus
Stored A Data to B Bus
Output
Stored A Data to B Bus and
Stored B Data to A Bus
H or L
X
X
X
X
H or L
X
X
Input
H or L
H or L H or L
Output
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| 74F656A | Octal buffer/driver with parity,non-inverting (3-State)(奇偶八通道緩沖器/驅(qū)動器，同向（三態(tài)）) |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 74F657SPC | 功能描述:總線收發(fā)器 Octal Bidir Trans RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel |
| 74F657SPC NSC91 | 制造商:National Semiconductor 功能描述:74F657N |
| 74F657SPCNSC91 | 制造商:National Semiconductor 功能描述:74F657N |
| 74F670 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4 x 4 register file 3-State |
| 74F673A | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:16-Bit Serial-In, Serial/Parallel-Out Shift Register |
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