參數(shù)資料
型號: 74F648A
廠商: NXP Semiconductors N.V.
英文描述: Octal transceiver/register, non-inverting(3-State)(八通道收發(fā)器/寄存器,同向(三態(tài)))
中文描述: 八路收發(fā)器/寄存器,非反相(3態(tài))(八通道收發(fā)器/寄存器,同向(三態(tài)))
文件頁數(shù): 6/16頁
文件大小: 121K
代理商: 74F648A
Philips Semiconductors
Product specification
74F646/A/74F648/A
Transceivers/registers
1990 Sep 25
6
The following examples demonstrate the four fundamental
bus–management functions that can be performed with the
74F646/646A and 74F648/648A. The select pins determine whether
data is stored or transferred through the device in real time. The
output enable pins determine the direction of the data flow.
BUS MANAGEMENT FUNCTIONS
REAL TIME BUS TRANSFER
BUS B TO BUS A
REAL TIME BUS TRANSFER
BUS A TO BUS B
STORAGE FROM
A, B, OR A AND B
TRANSFER STORED DATA
TO A AND/OR B
OE DIR CPABCPBA SAB SBA
L
L
X
X
X
L
BUS A
BUS A
BUS A
BUS A
BUS B
BUS B
BUS B
BUS B
OE DIR CPABCPBA SAB SBA
L
H
X
X
L
X
OE DIR CPABCPBA SAB SBA
X
X
X
X
X
H
X
X
X
X
X
X
X
X
OE DIR CPABCPBA SAB SBA
L
L
X
H or L
L
H
H or L
X
H
H
X
X
SF00392
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