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參數(shù)資料
| 型號： | 7409 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Quad 2-Input AND Gates with Open-Collector Outputs |
| 中文描述： | 四2輸入與門與集電極開路輸出 |
| 文件頁數(shù)： | 1/4頁 |
| 文件大?。?/td> | 93K |
| 代理商： | 7409 |
TL/F/6499
5
June 1989
5409/DM7409 Quad 2-Input AND Gates
with Open-Collector Outputs
General Description
This device contains four independent gates each of which
performs the logic AND function. The open-collector out-
puts require external pull-up resistors for proper logical op-
eration.
Pull-Up Resistor Equations
R
MAX
e
V
CC
(Min)
b
V
OH
N
1
(I
OH
)
a
N
2
(I
IH
)
R
MIN
e
V
CC
(Max)
b
V
OL
I
OL
b
N
3
(I
IL
)
Where: N
1
(I
OH
)
e
total maximum output high current for all
outputs tied to pull-up resistor
N
2
(I
IH
)
e
total maximum input high current for all
inputs tied to pull-up resistor
N
3
(I
IL
)
e
total maximum input low current for all
inputs tied to pull-up resistor
Connection Diagram
Dual-In-Line Package
TL/F/6499–1
Order Number 5409DMQB, 5409FMQB or DM7409N
See NS Package Number J14A, N14A or W14B
Function Table
Y
e
AB
Inputs
Output
A
B
Y
L
L
H
H
L
H
L
H
L
L
L
H
H
e
High Logic Level
L
e
Low Logic Level
C
1995 National Semiconductor Corporation
RRD-B30M105/Printed in U. S. A.
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