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参数资料
| 型号： | SN74ACT574SJ |
| 厂商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分类： | 总线收发器 |
| 英文描述： | ACT SERIES, 8-BIT DRIVER, TRUE OUTPUT, PDSO20 |
| 封装： | EIAJ TYPE2, PLASTIC, SSOP-20 |
| 文件页数： | 3/10页 |
| 文件大小： | 173K |
| 代理商： | SN74ACT574SJ |
Functional Description
The AC/ACT574 consists of eight edge-triggered flip-flops
with individual D-type inputs and 3-STATE true outputs. The
buffered clock and buffered Output Enable are common to all
flip-flops. The eight flip-flops will store the state of their indi-
vidual D-type inputs that meet the setup and hold time re-
quirements on the LOW-to-HIGH Clock (CP) transition. With
the Output Enable (OE) LOW, the contents of the eight
flip-flops are available at the outputs. When OE is HIGH, the
outputs go to the high impedance state. Operation of the OE
input does not affect the state of the flip-flops.
Function Table
Inputs
Internal
Outputs
Function
OE
CP
D
Q
O
N
H
L
NC
Z
Hold
H
NC
Z
Hold
H
N
L
Z
Load
H
N H
H
Z
Load
L
N
L
Data Available
L
N H
H
Data Available
L
H
L
NC
No Change in Data
L
H
NC
No Change in Data
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
N = LOW-to-HIGH Transition
NC = No Change
Logic Diagram
DS009910-5
Please note that this diagram is provided only for the understanding of
logic operations and should not be used to estimate propagation delays.
www.fairchildsemi.com
2
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