5962G9658001VCX View Datasheet(PDF) - Aeroflex UTMC
Part Name
Description
Manufacturer
5962G9658001VCX Datasheet PDF : 9 Pages
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Standard Products
UT54ACS279/UT54ACTS279
Quadruple S-R Latches
Datasheet
November 2010
www.aeroflex.com/logic
FEATURES
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
UT54ACS279- SMD 5962-96580
UT54ACTS279 - SMD 5962-96581
DESCRIPTION
The UT54ACS279 and the UT54ACTS279 contain four basic
S-R flip-flop latches. Under conventional operation, the S-R
inputs are normally held high. When the S input is pulsed low,
the Q output will be set high. When R is pulsed low, the Q output
will be reset low. If the S-R inputs are taken low simultaneously,
the Q output is unpredictable.
The devices are characterized over full military temperature
range of -55°C to +125°C.
FUNCTION TABLE
INPUTS
S
R
H
H
L
H
H
L
L
L
OUTPUT
Q
Q0
H
L
H1
Note:
1. This configuration is nonstable. It may not persist when the S and R inputs
return to their inactive (high) level.
LOGIC DIAGRAM
(LATCHES 1 & 3)
R
(LATCHES 2 & 4)
R
PINOUTS
1R
1S1
1S2
1Q
2R
2S
2Q
VSS
16-Pin DIP
Top View
1R
1 16
VDD
1S1 2 15 4S
1S2 3 14 4R
1Q 4 13 4Q
2R 5 12 3S2
2S 6 11 3S1
2Q 7 10 3R
VSS
8
9 3Q
16-Lead Flatpack
Top View
1 16
VDD
2 15
4S
3 14
4R
4 13
4Q
5 12
3S2
6 11
3S1
7 10
3R
8
9
3Q
LOGIC SYMBOL
(1)
1R
R
(2)
1S1
S1
(3)
1S2
S1
(5)
2R
R
(6)
2S
S2
(10)
3R
R
(11)
3S1
S3
(12)
3S2
S3
(14)
4R
R
(15)
4S
S4
(4)
1Q
(7) 2Q
(9)
3Q
(13)
4Q
Note:
1. Logic symbol in accordance with ANSI/IEEE standard 91-1984 and IEC
Publication 617-12.
S1
S2
Q
S
Q
1
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