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參數資料
| 型號： | IDT74FCT139TQB |
| 廠商： | Integrated Device Technology, Inc. |
| 元件分類： | 通用總線功能 |
| 英文描述： | FAST CMOS DUAL 1-OF-4 DECODER WITH ENABLE |
| 中文描述： | 有“使能”的快速CMOS雙1到4譯碼器 |
| 文件頁數： | 1/5頁 |
| 文件大小： | 103K |
| 代理商： | IDT74FCT139TQB |
Integrated Device Technology, Inc.
DESCRIPTION:
The IDT54/74FCT139T/AT/CT are dual 1-of-4 decoders
built using an advanced dual metal CMOS technology. These
devices have two independent decoders, each of which
accept two binary weighted inputs (A
0
-A
1
) and provide four
mutually exclusive active LOW outputs (
O
0
-
O
3
). Each de-
coder has an active LOW enable (
E
). When
E
is HIGH, all
outputs are forced HIGH.
IDT54/74FCT139T/AT/CT
FAST CMOS DUAL
1-OF-4 DECODER
WITH ENABLE
FUNCTIONAL BLOCK DIAGRAM
PIN CONFIGURATIONS
MILITARY AND COMMERCIAL TEMPERATURE RANGES
APRIL 1995
1995 Integrated Device Technology, Inc.
6.4
DSC-4218/3
1
E
a
A
0a
A
1a
O
0a
O
1a
O
2a
O
3a
E
b
A
0b
A
1b
O
0b
O
1b
O
2b
O
3b
2566 drw 01
2566 drw 02
2566 drw 03
O
3
INDEX
A
1a
O
0a
A
1b
NC
O
0b
E
a
N
V
C
LCC
TOP VIEW
3
2
20 19
1
4
5
6
7
8
18
17
16
15
14
9 10 11 12 13
L20-2
NC
O
1a
O
2a
A
0b
O
1b
A
0
O
3
O
2
G
N
E
b
FEATURES:
Std., A and C speed grades
Low input and output leakage
≤
1
μ
A (max.)
CMOS power levels
True TTL input and output compatibility
– V
OH
= 3.3V (typ.)
– V
OL
= 0.3V (typ.)
High drive outputs (-15mA I
OH
, 48mA I
OL
)
Meets or exceeds JEDEC standard 18 specifications
Product available in Radiation Tolerant and Radiation
Enhanced versions
Military product compliant to MIL-STD-883, Class B
and DESC listed (dual marked)
Available in DIP, SOIC, QSOP, CERPACK and
LCC packages
GND
E
a
A
0a
A
1a
O
0a
O
1a
O
2a
E
b
A
0b
A
1b
O
0b
O
1b
O
2b
O
3b
V
CC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
DIP/SOIC/QSOP/CERPACK
TOP VIEW
P16-1
D16-1
SO16-1
SO16-7
&
E16-1
O
3a
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
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