參數(shù)資料
型號： 74LCX32646
廠商： Fairchild Semiconductor Corporation
英文描述： Low Voltage 32-Bit Transceiver/Register with 5V Tolerant Inputs and Outputs (Preliminary)
中文描述： 低電壓32位收發(fā)器/有5V容限輸入和輸出寄存器（初步）
文件頁數(shù)： 6/11頁
文件大小： 507K
代理商： 74LCX32646
Preliminary
www.fairchildsemi.com
6
7
Functional Description
In the transceiver mode, data present at the HIGH imped-
ance port may be stored in either the A or B register or
both. The select (SAB
n
, SBA
n
) controls can multiplex
stored and real-time. The examples shown below demon-
strate the four fundamental bus-management functions
that can be performed for data I/O 1A and 1B: 0 - 7.
The direction control (DIR
n
) determines which bus will
receive data when OE
n
is LOW. In the isolation mode (OE
n
HIGH), A data may be stored in one register and/or B data
may be stored in the other register. When an output func-
tion is disabled, the input function is still enabled and may
be used to store and transmit data. Only one of the two
busses, A or B, may be driven at a time.
Real-Time Transfer
Bus B to Bus A
Real-Time Transfer
Bus A to Bus B
Transfer Storage
Data to A or B
Storage
OE
1
L
DIR
1
L
CPAB
1
CPBA
1
X
SAB
1
X
SBA
1
L
X
OE
1
L
DIR
1
H
CPAB
1
CPBA
1
X
SAB
1
L
SBA
1
X
X
OE
1
L
L
DIR
1
L
H
CPAB
1
CPBA
1
X
H or L
SAB
1
X
H
SBA
1
H
X
H or L
X
OE
1
L
L
H
H
DIR
1
H
X
X
X
CPAB
1
CPBA
1
SAB
1
L
X
X
X
SBA
1
X
L
X
X
X
X
X
X
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74LCX32646GX 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Low Voltage 32-Bit Transceiver/Register with 5V Tolerant Inputs and Outputs (Preliminary)
74LCX32652 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Low Voltage Transceiver/Register with 5V Tolerant Inputs and Outputs (Preliminary)
74LCX32652GX 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Low Voltage Transceiver/Register with 5V Tolerant Inputs and Outputs (Preliminary)
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