SN74F21DR ,Dual 4-input positive-AND gatesmaximum ratings” may cause permanent damage to the device. These are stress ratings only andfunctio ..
SN74F21DR ,Dual 4-input positive-AND gatesmaximum ratings over operating free-air temperature range (unless otherwise noted)Supply voltage ra ..
SN74F21N ,Dual 4-input positive-AND gateselectrical characteristics over recommended operating free-air temperature range (unlessotherwise n ..
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SN75150P ,Dual Line Drivermaximum ratings” may cause permanent damage to the device. These are stress ratings only, andfuncti ..
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SN75153 , QUAD DIFFERENTIAL LINE DRIVERS WITH 3-STATE OUTPUTS
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SN74F21D-SN74F21DR-SN74F21N
Dual 4-input positive-AND gates
descriptionThese devices contain two independent 4-input
AND gates. They perform the Boolean functions
Y = A • B • C • D or Y = A + B + C + D in positive
logic.
The SN54F21 is characterized for operation over
the full military temperature range of −55°C to
125°C. The SN74F21 is characterized for
operation from 0°C to 70°C.
FUNCTION TABLE
(each gate)
logic symbol†1A1B 41C1D2A 102B 122C2D†This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the D, J, and N packages.
logic diagram, each gate (positive logic)
SN54F21... FK PACKAGE
(TOP VIEW)1ANC2A2D
GND
NC − No internal connection
GND
