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TECHNICAL DATA
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KK74ACT21
Dual 4-Input AND Gate
High-Speed Silicon-Gate CMOS
The KK74ACT21 is identical in pinout to the LS/ALS21, HC/HCT21. The KK74ACT21 may be used as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs. • TTL/NMOS Compatible Input Levels • Outputs Directly Interface to CMOS, NMOS, and TTL • Operating Voltage Range: 4.5 to 5.5 V • Low Input Current: 1.0 µA; 0.1 µA @ 25°C • Outputs Source/Sink 24 mA
ORDERING INFORMATION KK74ACT21N Plastic KK74ACT21D SOIC TA = -40° to 85° C for all packages
LOGIC DIAGRAM
PIN ASSIGNMENT
NC = NO CONNECTION
FUNCTION TABLE
PIN 14 =VCC PIN 7 = GND PINS 3,11 = NO CONNECTION Inputs A L X X X H B X L X X H C X X L X H D X X X L H Output Y L L L L H
X = don’t care
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KK74ACT21 Datasheet
