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IDT74FCT139TQ

Description
FAST CMOS DUAL 1-OF-4 DECODER WITH ENABLE
File Size68KB,5 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
Download Datasheet View All

IDT74FCT139TQ Overview

FAST CMOS DUAL 1-OF-4 DECODER WITH ENABLE

Integrated Device Technology, Inc.
FAST CMOS DUAL
1-OF-4 DECODER
WITH ENABLE
DESCRIPTION:
IDT54/74FCT139T/AT/CT
FEATURES:
Std., A and C speed grades
Low input and output leakage
≤1µA
(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
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.
FUNCTIONAL BLOCK DIAGRAM
E
a
A
0a
A
1a
E
b
A
0b
A
1b
PIN CONFIGURATIONS
E
a
A
0a
A
1a
O
0a
O
1a
O
2a
O
3a
GND
1
2
3
4
5
6
7
8
P16-1
D16-1
SO16-1
SO16-7
&
E16-1
16
15
14
13
12
11
10
9
V
CC
E
b
A
0b
A
1b
O
0b
O
1b
O
2b
O
3b
2566 drw 02
DIP/SOIC/QSOP/CERPACK
TOP VIEW
E
a
V
CC
A
0a
NC
1
INDEX
O
0a
O
1a
O
2a
O
3a
O
0b
O
1b
O
2b
O
3b
2566 drw 01
3 2
A
1a
O
0a
NC
O
1a
O
2a
4
5
6
7
8
20 19
18
17
16
15
14
E
b
A
0b
A
1b
NC
O
0b
O
1b
L20-2
9 10 11 12 13
GND
NC
O
3b
O
3a
O
2b
2566 drw 03
LCC
TOP VIEW
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1995
Integrated Device Technology, Inc.
APRIL 1995
DSC-4218/3
6.4
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