參數(shù)資料
型號: 935008210602
廠商: NXP SEMICONDUCTORS
元件分類: 總線收發(fā)器
英文描述: F/FAST SERIES, OCTAL 1-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDIP24
封裝: 0.300 INCH, PLASTIC, MS-001, SOT-222-1, DIP-24
文件頁數(shù): 11/14頁
文件大小: 159K
代理商: 935008210602
Philips Semiconductors
Product data
74F646A/74F648A
Transceivers/registers
2003 Feb 04
6
The following examples demonstrate the four fundamental
bus-management functions that can be performed with the 74F646A
and 74F648A. 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 CPAB CPBA SAB SBA
LL
X
L
BUS A
BUS B
OE DIR CPAB CPBA SAB SBA
LH
X
L
X
OE DIR CPAB CPBA SAB SBA
XX
XX
X
XX
X
XX
HX
↑↑
XX
OE DIR CPAB CPBA SAB SBA
L
X
H or L
X
H
L
H
H or L
X
H
X
SF00392
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