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DM74ALS27 Triple 3-Input NOR Gate
May 2007
DM74ALS27
Triple 3-Input NOR Gate
Features
■
Switching specifications at 50pF
■
Switching specifications guaranteed over full
tm
General Description
This device contains three independent gates, each of
which performs the logic NOR function.
temperature and V
CC
range
■
Advanced oxide-isolated, ion-implanted Schottky TTL
process
■
Functionally and pin for pin compatible with Schottky
and low power Schottky TTL counterpart
■
Improved AC performance over Schottky and low
power Schottky counterparts
Ordering Information
Order
Number
DM74ALS27M
Package
Number
M14A
Package Description
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering number.
Connection Diagram
Function Table
Y
=
A+B+C
Inputs
A
H
X
X
L
Output
C
X
X
H
L
B
X
H
X
L
Y
L
L
L
H
H
=
HIGH Logic Level
L
=
LOW Logic Level
X
=
Either LOW or HIGH Logic Level
©1986 Fairchild Semiconductor Corporation
DM74ALS27 Rev. 1.2
www.fairchildsemi.com
DM74ALS27 Triple 3-Input NOR Gate
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
V
CC
V
I
T
A
T
STG
θ
JA
Supply Voltage
Input Voltage
Parameter
Rating
7V
7V
0°C to +70°C
–65°C to +150°C
116.0°C/W
Operating Free Air Temperature Range
Storage Temperature Range
Typical Thermal Resistance
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to absolute maximum ratings.
Symbol
V
CC
V
IH
V
IL
I
OH
I
OL
T
A
Parameter
Supply Voltage
HIGH Level Input Voltage
LOW Level Input Voltage
HIGH Level Output Current
LOW Level Output Current
Free Air Operating Temperature
Min.
4.5
2
Nom.
5
Max.
5.5
0.8
–0.4
8
Units
V
V
V
mA
mA
°C
0
70
Electrical Characteristics
Over recommended operating free air temperature range. All typical values are measured at V
CC
=
5V, T
A
=
25°C.
Symbol
V
IK
V
OH
V
OL
I
I
I
IH
I
IL
I
O
I
CC
Parameter
Input Clamp Voltage
HIGH Level Output Voltage
LOW Level Output Voltage
Input Current @ Max Input Voltage
HIGH Level Input Current
LOW Level Input Current
Output Drive Current
Supply Current
Conditions
V
CC
=
4.5V, I
I
=
–18mA
I
OH
=
–0.4mA,
V
CC
=
4.5V to 5.5V
V
CC
=
4.5V, I
OL
=
8mA
V
CC
=
5.5V, V
IH
=
7V
V
CC
=
5.5V, V
IH
=
2.7V
V
CC
=
5.5V, V
IL
=
0.4V
V
CC
=
5.5V, V
O
=
2.25V
V
CC
=
5.5V
Outputs HIGH
Outputs LOW
Min
V
CC
– 2
Typ
Max
–1.5
Units
V
V
0.35
0.5
0.1
20
–0.1
V
mA
µA
mA
mA
mA
–30
0.97
2
–112
1.8
4
Switching Characteristics
Over recommended operating free air temperature range.
Symbol
t
PLH
t
PHL
Parameter
Propagation Delay Time, LOW-to-HIGH Level Output
Propagation Delay Time, HIGH-to-LOW Level Output
Conditions
V
CC
=
4.5V to 5.5V,
R
L
=
500
Ω
, C
L
=
50pF
Min.
4
3
Max.
15
9
Units
ns
ns
©1986 Fairchild Semiconductor Corporation
DM74ALS27 Rev. 1.2
www.fairchildsemi.com
2
DM74ALS27 Triple 3-Input NOR Gate
Physical Dimensions
Dimensions are in millimeters unless otherwise noted.
Figure 1. 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
Package Number M14A
©1986 Fairchild Semiconductor Corporation
DM74ALS27 Rev. 1.2
www.fairchildsemi.com
3
DM74ALS27 Triple 3-Input NOR Gate
TRADEMARKS
The following are registered and unregistered trademarks and service marks Fairchild Semiconductor owns or is authorized to use and
is not intended to be an exhaustive list of all such trademarks
ACEx
®
Build it Now™
CorePLUS™
CROSSVOLT™
CTL™
Current Transfer Logic™
EcoSPARK
®
FACT Quiet Series™
FACT
®
FAST
®
FastvCore™
FPS™
FRFET
®
Global Power Resource
SM
Green FPS™
Green FPS™ e-Series™
GTO™
i-Lo™
IntelliMAX™
ISOPLANAR™
MegaBuck™
MICROCOUPLER™
MicroPak™
Motion-SPM™
OPTOLOGIC
®
OPTOPLANAR
®
PDP-SPM™
Power220
®
Power247
®
POWEREDGE
®
Power-SPM™
PowerTrench
®
Programmable Active Droop™
QFET
®
QS™
QT Optoelectronics™
Quiet Series™
RapidConfigure™
SMART START™
SPM
®
STEALTH™
SuperFET™
SuperSOT™-3
SuperSOT™-6
SuperSOT™-8
SyncFET™
The Power Franchise
®
™
TinyBoost™
TinyBuck™
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®
TINYOPTO™
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®
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DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS
HEREIN TO IMPROVE RELIABILITY, FUNCTION, OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF
THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE
UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF
FAIRCHILD’S WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE
PRODUCTS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR
SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION.
As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body, or
(b) support or sustain life, and (c) whose failure to perform
when properly used in accordance with instructions for use
provided in the labeling, can be reasonably expected to result
in significant injury to the user.
PRODUCT STATUS DEFINITIONS
Definition of Terms
Datasheet Identification
Advance Information
Product Status
Formative or In Design
Definition
This datasheet contains the design specifications for product development.
Specifications may change in any manner without notice.
This datasheet contains preliminary data; supplementary data will be
published at a later date. Fairchild Semiconductor reserves the right to make
changes at any time without notice to improve design.
This datasheet contains final specifications. Fairchild Semiconductor reserves
the right to make changes at any time without notice to improve design.
This datasheet contains specifications on a product that has been
discontinued by Fairchild semiconductor. The datasheet is printed for
reference information only.
Rev. I28
2.
A critical component is any component of a life support
device or system whose failure to perform can be reasonably
expected to cause the failure of the life support device or
system, or to affect its safety or effectiveness.
Preliminary
First Production
No Identification Needed
Full Production
Obsolete
Not In Production
©1986 Fairchild Semiconductor Corporation
DM74ALS27 Rev. 1.2
www.fairchildsemi.com
4
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