SN74F20DR ,Dual 4-input positive-NAND gateselectrical characteristics over recommended operating free-air temperature range (unlessotherwise n ..
SN74F20N ,Dual 4-input positive-NAND gateselectrical characteristics over recommended operating free-air temperature range (unlessotherwise n ..
SN74F20N ,Dual 4-input positive-NAND gateslogic diagram, each gate (positive logic)ABYCDCopyright 1993, Texas Instruments Incorporated.Prod ..
SN74F20NSR ,Dual 4-input positive-NAND gatesmaximum ratings” may cause permanent damage to the device. These are stress ratings only andfunctio ..
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SN74F21DR ,Dual 4-input positive-AND gatesmaximum ratings” may cause permanent damage to the device. These are stress ratings only andfunctio ..
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SN74F20-SN74F20D-SN74F20DR-SN74F20N-SN74F20NSR
Dual 4-input positive-NAND gates
descriptionThese devices contain two independent 4-input
NAND gates. They perform the Boolean functions
Y = A • B • C • D or Y = A + B + C + D in positive
logic.
The SN54F20 is characterized for operation over
the full military temperature range of –55°C to
125°C. The SN74F20 is characterized for
operation from 0°C to 70°C.
FUNCTION TABLE
(each gate)
logic symbol†1A 21B1C 51D2A2B 122C 132D†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)
SN54F20... FK PACKAGE
(TOP VIEW)1ANC2A2D
GND
NC – No internal connection
GND
