Triple 3-Input NOR Gates
Standard Products
UT54ACS27/UT54ACTS27
Triple 3-Input NOR Gates
Datasheet November 2010 www.aeroflex.com/logic
FEATURES...
Description
Standard Products
UT54ACS27/UT54ACTS27
Triple 3-Input NOR Gates
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
- 14-pin DIP - 14-lead flatpack UT54ACS27 - SMD 5962-96528 UT54ACTS27 - SMD 5962-96529
DESCRIPTION
The UT54ACS27 and the UT54ACTS27 are triple, three-input NOR gates. The circuits perform the Boolean functions Y = A+B+C or Y = A⋅B⋅C in positive logic.
The devices are characterized over full military temperature range of -55°C to +125°C.
FUNCTION TABLE
INPUTS
OUTPUT
ABCY
HXX L
XHX L
XXHL
L L LH
LOGIC SYMBOL
(1) A1
(2) B1
(13) C1
(3) A2
(4) B2
(5) C2
(9) A3
(10) B3
(11) C3
≥1
(12) Y1 (6) Y2 (8) Y3
Note: 1. Logic symbol in accordance with ANSI/IEEE standard 91-1984 and IEC
Publication 617-12.
PINOUTS
A1 B1 A2 B2 C2 Y2 VSS
14-Pin DIP Top View
A1 1 14 VDD
B1 2 13 C1
A2 3 12 Y1
B2 4 11 C3
C2 5 10 B3
Y2 6
9 A3
VSS 7
8 Y3
14-Lead Flatpack Top View
1 14 2 13 3 12 4 11 5 10 69 78
VDD C1 Y1 C3 B3 A3 Y3
LOGIC DIAGRAM
A1 B1 Y1 C1
A2 B2 Y2 C2
A3 B3 Y3 C3
1
OPERATIONAL ENVIRONMENT1 PARAMETER Total Dose SEU Threshold 2 SEL Threshold
Neutron Fluence
LIMIT 1.0E6
80 120 1.0E14
UNITS rads(Si) MeV-cm2/mg MeV-cm2/mg n/cm2
Notes: 1. Logic will not latchup during radiation exposure within the limits defined in the table. 2. Device storage elements are immune to SEU affects.
ABSOLUTE MAXIMUM RATINGS
SYMBOL...
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