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參數(shù)資料
| 型號： | MM54C157N |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Quad 2-Input Multiplexers |
| 中文描述： | CMOS SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDIP16 |
| 封裝： | PLASTIC, DIP-16 |
| 文件頁數(shù)： | 1/4頁 |
| 文件大?。?/td> | 100K |
| 代理商： | MM54C157N |
TL/F/5894
M
February 1988
MM54C157/MM74C157 Quad 2-Input Multiplexers
General Description
These multiplexers are monolithic complementary MOS
(CMOS) integrated circuits constructed with N- and P-chan-
nel enhancement transistors. They consist of four 2-input
multiplexers with common select and enable inputs. When
the enable input is at logical ‘‘0’’ the four outputs assume
the values as selected from the inputs. When the enable
input is at logical ‘‘1’’, the outputs assume logical ‘‘0’’. Se-
lect decoding is done internally resulting in a single select
input only.
Features
Y
Supply voltage range
3V to 15V
0.45 V
CC
(typ.)
50 nW (typ.)
Drive 2 LPTTL loads
Y
High noise immunity
Y
Low power
Y
Tenth power TTL compatible
Logic & Connection Diagrams
Dual-In-Line Package
TL/F/5894–2
Top View
Order Number MM54C157 or MM74C157
TL/F/5894–1
Truth Table
Enable
Select
A
B
Output Y
1
0
0
0
0
X
0
0
1
1
X
0
1
X
X
X
X
X
0
1
0
0
1
0
1
74L Compatibility
TL/F/5894–3
Guaranteed Noise Margin
as a Function of V
CC
TL/F/5894–4
C
1995 National Semiconductor Corporation
RRD-B30M105/Printed in U. S. A.
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