UT54ACS139 Datasheet, PDF (1/10 Pages) Aeroflex Circuit Technology – Dual 2-Line to 4-Line Decoders/Demultiplexers

Standard Products
UT54ACS139/UT54ACTS139
Dual 2-Line to 4-Line Decoders/Demultiplexers
Datasheet
November 2010
www.aeroflex.com/logic
FEATURES
‰ Incorporates two enable inputs to simplify cascading and/or
data reception
‰ 1.2μ CMOS
- Latchup immune
‰ High speed
‰ Low power consumption
‰ Single 5 volt supply
‰ Available QML Q or V processes
‰ Flexible package
- 16-pin DIP
- 16-lead flatpack
‰ UT54ACS139 - SMD 5962-96546
‰ UT54ACTS139 - SMD 5962-96547
DESCRIPTION
The UT54ACS139 and the UT54ACTS139 are designed to be
used in high-performance memory-decoding or data-routing ap-
plications requiring very short propagation delay times.
The devices consist of two individual two-line to four-line de-
coders in a single package. The active-low enable input can be
used as a data line in demultiplexing applications.
The devices are characterized over full military temperature
range of -55°C to +125°C.
FUNCTION TABLE
ENABLE
INPUTS
G
SELECT
INPUTS
B
A
OUTPUT
Y0
Y1
Y2
Y3
H
X
X
H
H
H
H
L
L
L
L
H
H
H
L
L
H
H
L
H
H
L
H
L
H
H
L
H
L
H
H
H
H
H
L
PINOUTS
1G
1A
1B
1Y0
1Y1
1Y2
1Y3
V_SS
16-Pin DIP
Top View
IG
1 16
V_DD
1A 2 15 _2G
1B 3 14 _2A
1Y0 4 13 _2B
1Y1 5 12 _2Y0
1Y2 6 11 2Y1
1Y3 7 10 2Y2
V_SS
8
9
2Y3
16-Lead Flatpack
Top View
1 16
V_DD
2 15
2G
3 14
2A
4 13
2B
5 12
2Y0
6 11
2Y1
7 10
2Y2
8
9
2Y3
LOGIC DIAGRAM
1G ⁽¹⁾
SELECT
1A ⁽²⁾
1B ⁽³⁾
2G ⁽¹⁵⁾
SELECT
2A ⁽¹⁴⁾
(13)
2B
(4)
1Y0
(5) _1Y1
(6) _1Y2
(7) _1Y3
(12) _2Y0
(11) _2Y1
(10) _2Y2
(9) _2Y3
1