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Part: IN74ALS27N
Category:
Logic
Description: IN74ALS27D Triple 3-Input Positive-nOR GATE 14
Company: IK Semiconductor
Datasheet: Download IN74ALS27N datasheet File size : 288 kB
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Datasheet text preview:
TECHNICAL DATA
IN74ALS27A
TRIPLE 3-INPUT NOR GATE
POSITIVE-
This device contains three independent 3-input positive-NOR gates. They perform the Boolean functions Y=A+B+C or Y=A+B+C in positive logic. The IN74ALS27A is characterized for operation from 0°C to 70°C
ORDERING INFORMATION IN74LS27N Plastic IN74ALS27D SOIC TA = 0° to 70° C for all packages
Logic Symbol
Logic Diagram (Positive Logic)
FUNCTION TABLE INPUTS A H X X L B X H X L C X X H L OUTPUT Y L L L H
PIN ASSIGNMENT
IN74ALS27A
ABSOLUTE MAXIMUM TEMPERATURE RANGE RATINGS OVER OPERATING 7V 7V 0°C to 70°C -65°C to 150°C FREE-AIR
Supply voltage, Vcc Input voltage, Vl Operating free-air temperature range, TA Storage temperature range RECOMMENDED OPERATING CONDITIONS VCC VIH VIL IOH IOL TA Supply voltage High-level input voltage Low-level input voltage High-level output current Low-level output current Operating free-air temperature
MIN 4.5 2
0
NOM MAX UNIT 5 5.5 V V 0.8 V -0.4 mA 8 mA o 70 C
ELECTRICAL CHARACTERISTICS OVER RECOMMENDED OPERATING FREEAIR TEMPERATURE RANGE Parameter VIK VCC=4.5V VOH VCC=4.5V to 5.5V VOL VCC=4.5V II IIH IIL IO * ICCH ICCL *The output VCC=5.5V VCC=5.5V VCC=5.5V VCC=5.5V VCC=5.5V VCC=5.5V Test Conditions II =-18mA IOH =-0.4mA IOL =4mA IOL =8mA VI=7V VI=2.7V VI=0.4V VO=2.25V VI=0 VI=4.5V MIN TYP** MAX UNI -1.5 V VCC-2 V 0.25 0.4 V 0.35 0.5 V 0.1 mA 20 µA -0.1 m -30 -112 m 0.97 1.8 m 2 4 m
conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS **All typical values are at VCC=5V, TA=25oC
SWITCHING CHARACTERISTICS VCC=4.5V to 5.5V, Parameter From (input) To (output) CL=50pF, RL=500 Ohm, TA=MIN to MAX* MIN 3 1 MAX 15 9 UNIT
tPHL tPLH
conditions
A, B or C
Y
ns ns
*For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating
2
Others parts begin by in
IN-1 IN-2 IN-3 IN-4 IN-5 IN-6 IN-7
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