UT54ACS138E Datasheet, PDF (1/9 Pages) Aeroflex Circuit Technology – 3-Line to 8-Line Decoders/Demultiplexers

UT54ACS138E
3-Line to 8-Line Decoders/Demultiplexers
July, 2013
Datasheet
www.aeroflex.com/Logic
FEATURES
 0.6mCRH CMOS process
- Latchup immune
 High speed
 Low power consumption
 Wide power supply operating range of 3.0V to 5.5V
 Available QML Q or V processes
 16-pin flatpack
 UT54ACS138E - SMD - 5962-96544
DESCRIPTION
The UT54ACS138E is a 3-line to 8-line decoder/demultiplexer
designed to be used in high-performance memory-decoding or
data-routing applications requiring very short propagation delay
times.
The conditions at the binary select inputs and the three enable
inputs select one of eight output lines. Two active-low and one
active-high enable inputs reduce the need for external gates of
inverters when expanding. A 24-line decoder can be implement-
ed without external inverters and a 32-line decoder requires only
one inverter. An enable input can be used as a data input for
demultiplexing applications.
The device is characterized over full military temperature range
of -55C to +125C.
FUNCTION TABLE
ENABLE INPUTS
SELECT INPUTS
G1
G2A
G2B
C
B
A
Y0
X
X
H
X
X
X
H
L
X
X
X
X
X
H
X
H
X
X
X
X
H
H
L
L
L
L
L
L
H
L
L
L
L
H
H
H
L
L
L
H
L
H
H
L
L
L
H
H
H
H
L
L
H
L
L
H
H
L
L
H
L
H
H
H
L
L
H
H
L
H
H
L
L
H
H
H
H
PINOUT
A
B
C
G2A
G2B
G1
Y7
V_SS
Y1
Y2
H
H
H
H
H
H
H
H
L
H
H
L
H
H
H
H
H
H
H
H
H
H
16-Lead Flatpack
Top View
1 16
V_DD
2 15
Y0
3 14
Y1
4 13
Y2
5 12
Y3
6 11
Y4
7 10
Y5
8
9
Y6
OUTPUT
Y3
Y4
Y5
Y6
Y7
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
L
1