參數(shù)資料
型號(hào)： HD74HC646
廠商： Hitachi,Ltd.
英文描述： Octal Bus Transceivers/Registers with Multiplexed 3-state outputs
中文描述： 八路總線收發(fā)器/ 3的復(fù)用寄存器態(tài)輸出
文件頁(yè)數(shù)： 2/10頁(yè)
文件大?。?/td> 61K
代理商： HD74HC646
HD74HC646/HD74HC648
2
Function Table
Inputs
Control
G
Clock
Select
Data I/O
Data I/O
Operation or Function
Direction BA AB AB
BA A1 thru A8 B1 thru B8 HD74HC646
HD74HC648
H
X
X
X
X
X
Z (Input)
Z (Input)
Isolation
Isolation
Store
A
&
B
data
B
real-time data to
A bus
B
stored data to A
bus
B
stored data to A
bus
A
real-time data to
B bus
A
stored data to B
bus
A
stored data to B
bus
H
X
H
H
Z (Input)
Z (Input)
Store A & B data
L
L
X
X
X
L
Output
Z (Input)
B real-time data to
A bus
L
L
H
H
X
H
Output
Z (Input)
B stored data to A
bus
L
L
L
L
X
H
Output
Z (Input)
B stored data to A
bus
L
H
X
X
L
X
Z (Input)
Output
A real-time data to
B bus
L
H
H
H
H
X
Z (Input)
Output
A stored data to B
bus
L
H
L
L
H
X
Z (Input)
Output
A stored data to B
bus
B
Real-time transfer
Bus B to Bus A
B
Real-time transfer
Bus A to Bus B
B
B
相關(guān)PDF資料
PDF描述
HD74HC648 Octal Bus Transceivers/Registers with Multiplexed 3-state outputs
HD74HC651 8-Bit Universal Shift/Storage Registers With 3-State Outputs 20-CDIP -55 to 125
HD74HC652 Octal Bus Transceivers/Registers(with inverted 3-state outputs)
HD74HC668 Synchronous UP/Down Decade,4-bit binary Counter
HD74HC669 Synchronous UP/Down Decade,4-bit binary Counter
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