THROUGH-HOLE Logic Gates 2,400+

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Part RoHS Manufacturer Logic IC Type Temperature Grade Terminal Form No. of Terminals Package Code Package Shape Total Dose (V) Package Body Material Schmitt Trigger Surface Mount No. of Functions Technology Screening Level No. of Inputs No. of Bits Translation Packing Method Nominal Supply Voltage / Vsup (V) Power Supplies (V) Load Capacitance (CL) Package Style (Meter) Package Equivalence Code Propagation Delay (tpd) Maximum I (ol) Sub-Category Terminal Pitch Maximum Operating Temperature Output Characteristics Minimum Operating Temperature Terminal Finish Terminal Position Control Type Minimum fmax JESD-30 Code Moisture Sensitivity Level (MSL) Maximum Supply Voltage (Vsup) Maximum Seated Height Width Qualification Output Polarity Minimum Supply Voltage (Vsup) Maximum Power Supply Current (ICC) Additional Features JESD-609 Code Maximum Time At Peak Reflow Temperature (s) Peak Reflow Temperature (C) Length Family

SN74F02N3

Texas Instruments

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

4

TTL

2

5

IN-LINE

6.5 ns

70 Cel

0 Cel

DUAL

R-PDIP-T14

5.5 V

4.5 V

NOT SPECIFIED

NOT SPECIFIED

F/FAST

5962-9861101QCA

Texas Instruments

NOR GATE

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

NO

4

TTL

MIL-PRF-38535 Class Q

2

TUBE

5

5

50 pF

IN-LINE

DIP14,.3

18 ns

-16 Amp

Gate

2.54 mm

125 Cel

-55 Cel

Tin/Lead (Sn/Pb)

DUAL

R-GDIP-T14

5.5 V

5.08 mm

7.62 mm

Qualified

4.5 V

57 mA

IOL = 48MA @ VOL = 0.4V; IOH = 29MA @ VOH = 2V

e0

NOT SPECIFIED

NOT SPECIFIED

19.56 mm

TTL/H/L

SN74LS30J4

Texas Instruments

NAND GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC

NO

NO

1

TTL

8

5

5

IN-LINE

DIP14,.3

20 ns

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-XDIP-T14

5.25 V

4.75 V

5962-9758401QCX

Texas Instruments

NAND GATE

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

NO

2

TTL

MIL-PRF-38535 Class Q

4

5

50 pF

IN-LINE

7 ns

20 Amp

2.54 mm

125 Cel

-55 Cel

DUAL

R-GDIP-T14

5.5 V

5.08 mm

7.62 mm

Qualified

4.5 V

5.1 mA

NOT SPECIFIED

NOT SPECIFIED

19.56 mm

F/FAST

SN7412NP3

Texas Instruments

NAND GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

3

TTL

3

5

5

IN-LINE

DIP14,.3

45 ns

Gates

2.54 mm

70 Cel

OPEN-COLLECTOR

0 Cel

DUAL

R-PDIP-T14

5.25 V

4.75 V

CD4077BF

Texas Instruments

XNOR GATE

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

NO

4

CMOS

2

TUBE

5

5/15

50 pF

IN-LINE

DIP14,.3

280 ns

6.8 Amp

Gates

2.54 mm

125 Cel

-55 Cel

Tin/Lead (Sn/Pb)

DUAL

R-GDIP-T14

18 V

5.08 mm

7.62 mm

Not Qualified

3 V

.03 mA

e0

NOT SPECIFIED

NOT SPECIFIED

19.305 mm

4000/14000/40000

SN74S132N1

Texas Instruments

NAND GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

YES

NO

4

TTL

2

5

5

IN-LINE

DIP14,.3

10.5 ns

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T14

5.5 V

Not Qualified

4.5 V

NOT SPECIFIED

NOT SPECIFIED

SN7486N1

Texas Instruments

XOR GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

TTL

5

5

IN-LINE

DIP14,.3

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T14

Not Qualified

SN7420J-00

Texas Instruments

NAND GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

2

TTL

4

5

15 pF

IN-LINE

15 ns

2.54 mm

70 Cel

0 Cel

DUAL

R-GDIP-T14

5.25 V

5.08 mm

7.62 mm

Not Qualified

4.75 V

11 mA

19.56 mm

TTL/H/L

SN74HC832N-10

Texas Instruments

OR GATE

INDUSTRIAL

THROUGH-HOLE

20

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

6

CMOS

2

5

50 pF

IN-LINE

25 ns

2.54 mm

85 Cel

-40 Cel

DUAL

R-PDIP-T20

6 V

5.08 mm

7.62 mm

Not Qualified

2 V

24.325 mm

HC/UH

SN74H54N3

Texas Instruments

AND-OR-INVERT GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

1

TTL

9

IN-LINE

DIP14,.3

11 ns

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T14

5.25 V

4.75 V

SN74F02N

Texas Instruments

NOR GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

4

TTL

2

TUBE

5

5

50 pF

IN-LINE

DIP14,.3

5.3 ns

20 Amp

Gates

2.54 mm

70 Cel

0 Cel

Nickel/Palladium/Gold (Ni/Pd/Au)

DUAL

R-PDIP-T14

5.5 V

5.08 mm

7.62 mm

Not Qualified

4.5 V

13 mA

e4

NOT SPECIFIED

NOT SPECIFIED

19.305 mm

F/FAST

SN74ALS1008NP1

Texas Instruments

AND GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

4

TTL

2

5

5

IN-LINE

DIP14,.3

9 ns

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T14

5.5 V

Not Qualified

4.5 V

SN74LS386NP1

Texas Instruments

XOR GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

4

TTL

2

5

5

IN-LINE

DIP14,.3

30 ns

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T14

5.25 V

Not Qualified

4.75 V

DM7426J

Texas Instruments

NAND GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

4

TTL

2

5

IN-LINE

24 ns

70 Cel

OPEN-COLLECTOR

0 Cel

TIN LEAD

DUAL

R-PDIP-T14

5.25 V

4.75 V

e0

TTL/H/L

SN74ALS1034J

Texas Instruments

BUFFER

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC

NO

NO

6

TTL

1

5

5

IN-LINE

DIP14,.3

8 ns

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-XDIP-T14

5.5 V

Not Qualified

4.5 V

SN74LS13NP1

Texas Instruments

NAND GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

YES

NO

2

TTL

4

5

5

IN-LINE

DIP14,.3

27 ns

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T14

5.25 V

Not Qualified

4.75 V

SN54ALS33AJ

Texas Instruments

NOR GATE

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

NO

4

TTL

2

TUBE

5

5

50 pF

IN-LINE

DIP14,.3

18 ns

.4 Amp

Gates

2.54 mm

125 Cel

OPEN-COLLECTOR

-55 Cel

Tin/Lead (Sn/Pb)

DUAL

R-GDIP-T14

5.5 V

5.08 mm

7.62 mm

Not Qualified

4.5 V

9 mA

IOH = 0.1MA @ VOH = 5.5V; IOL = 12MA @ VOL = 0.4V

e0

NOT SPECIFIED

NOT SPECIFIED

19.56 mm

ALS

SN74AS805AN

Texas Instruments

NOR GATE

COMMERCIAL

THROUGH-HOLE

20

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

6

TTL

2

5

5

IN-LINE

DIP20,.3

4.3 ns

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T20

5.5 V

Not Qualified

4.5 V

32 mA

SN74ALS1034NP1

Texas Instruments

BUFFER

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

6

TTL

1

5

5

IN-LINE

DIP14,.3

8 ns

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T14

5.5 V

Not Qualified

4.5 V

SN74LS40NP3

Texas Instruments

NAND GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

2

TTL

4

5

5

IN-LINE

DIP14,.3

24 ns

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T14

5.25 V

4.75 V

SN54HC01J

Texas Instruments

NAND GATE

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC

NO

NO

4

CMOS

2

5

50 pF

IN-LINE

DIP14,.3

155 ns

4 Amp

Gates

2.54 mm

125 Cel

-55 Cel

DUAL

R-XDIP-T14

6 V

Not Qualified

2 V

NOT SPECIFIED

NOT SPECIFIED

5962-3805504BEX

Texas Instruments

BUFFER

MILITARY

THROUGH-HOLE

16

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

6

CMOS

1

5

IN-LINE

345 ns

125 Cel

-55 Cel

DUAL

R-GDIP-T16

12.5 V

Not Qualified

4.5 V

4000/14000/40000

SN74LS40J

Texas Instruments

NAND GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

NO

2

TTL

4

5

5

45 pF

IN-LINE

DIP14,.3

24 ns

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-GDIP-T14

5.25 V

5.08 mm

7.62 mm

Not Qualified

4.75 V

6 mA

NOT SPECIFIED

NOT SPECIFIED

19.56 mm

LS

SN74AS804BN3

Texas Instruments

NAND GATE

COMMERCIAL

THROUGH-HOLE

20

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

6

TTL

2

5

5

IN-LINE

DIP20,.3

5 ns

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T20

5.5 V

4.5 V

27 mA

SN54H15J

Texas Instruments

AND GATE

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

NO

3

TTL

3

5

25 pF

IN-LINE

DIP14,.3

13 ns

Gates

2.54 mm

125 Cel

OPEN-COLLECTOR

-55 Cel

DUAL

R-GDIP-T14

5.5 V

5.08 mm

7.62 mm

Not Qualified

4.5 V

48 mA

NOT SPECIFIED

NOT SPECIFIED

19.56 mm

TTL/H/L

5962-8761002EA

Texas Instruments

NOR GATE

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, METAL-SEALED COFIRED

NO

NO

3

CMOS

38535Q/M;38534H;883B

3

4.5

3.3/5

50 pF

FLATPACK

DIP16,.3

145 ns

24 Amp

Gates

2.54 mm

125 Cel

-55 Cel

DUAL

R-XDIP-T16

6 V

Not Qualified

2 V

NOT SPECIFIED

NOT SPECIFIED

HC/UH

SN7432J

Texas Instruments

OR GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

NO

4

TTL

2

5

5

15 pF

IN-LINE

DIP14,.3

22 ns

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-GDIP-T14

5.25 V

5.08 mm

7.62 mm

Not Qualified

4.75 V

38 mA

NOT SPECIFIED

NOT SPECIFIED

19.56 mm

TTL/H/L

SNJ5408J-00

Texas Instruments

AND GATE

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

4

TTL

2

5

15 pF

IN-LINE

19 ns

2.54 mm

125 Cel

-55 Cel

DUAL

R-GDIP-T14

5.5 V

5.08 mm

7.62 mm

Not Qualified

4.5 V

33 mA

19.56 mm

TTL/H/L

SN74H00N1

Texas Instruments

NAND GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

4

TTL

2

IN-LINE

DIP14,.3

10 ns

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T14

5.25 V

Not Qualified

4.75 V

CD4073BF3A

Texas Instruments

AND GATE

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

NO

3

CMOS

38535Q/M;38534H;883B

3

TUBE

5

5/15

50 pF

IN-LINE

DIP14,.3

250 ns

6.8 Amp

Gates

2.54 mm

125 Cel

-55 Cel

Tin/Lead (Sn/Pb)

DUAL

R-GDIP-T14

18 V

5.08 mm

7.62 mm

Not Qualified

3 V

.03 mA

e0

NOT SPECIFIED

NOT SPECIFIED

19.56 mm

4000/14000/40000

SN74ALS37ANP3

Texas Instruments

NAND GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

4

TTL

2

5

5

IN-LINE

DIP14,.3

8 ns

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T14

5.5 V

4.5 V

NOT SPECIFIED

NOT SPECIFIED

SNJ54AS1036AJ

Texas Instruments

NOR GATE

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

NO

4

TTL

38535Q/M;38534H;883B

2

5

5

50 pF

IN-LINE

DIP14,.3

4.8 ns

Gates

2.54 mm

125 Cel

-55 Cel

DUAL

R-GDIP-T14

5.5 V

5.08 mm

7.62 mm

Not Qualified

4.5 V

23 mA

IOH = 40MA @ VOH = 2V; IOL = 40MA @ VOL = 0.5V

NOT SPECIFIED

NOT SPECIFIED

19.56 mm

AS

SNJ5407J

Texas Instruments

BUFFER

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

NO

6

TTL

MIL-PRF-38535

1

TUBE

5

5

50 pF

IN-LINE

DIP14,.3

30 ns

30 Amp

Gates

2.54 mm

125 Cel

OPEN-COLLECTOR

-55 Cel

TIN LEAD

DUAL

R-GDIP-T14

5.5 V

5.08 mm

6.67 mm

Not Qualified

4.5 V

41 mA

IOL = 30MA @ VOL = 0.7V; IOH = 0.25MA @ VOH = 30V

e0

19.56 mm

TTL/H/L

SN74128NE4

Texas Instruments

NOR GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

4

TTL

2

5

5

50 pF

IN-LINE

DIP14,.3

18 ns

48 Amp

Gates

2.54 mm

70 Cel

0 Cel

NICKEL PALLADIUM GOLD

DUAL

R-PDIP-T14

5.25 V

5.08 mm

7.62 mm

Not Qualified

4.75 V

57 mA

IOL = 48MA @ VOL = 0.4V; IOH = 42.4MA @ VOH = 2V

e4

19.305 mm

TTL/H/L

SN7405NE4

Texas Instruments

INVERTER

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

6

TTL

1

TUBE

5

5

15 pF

IN-LINE

DIP14,.3

55 ns

16 Amp

Gates

2.54 mm

70 Cel

OPEN-COLLECTOR

0 Cel

Nickel/Palladium/Gold (Ni/Pd/Au)

DUAL

R-PDIP-T14

5.25 V

5.08 mm

7.62 mm

Not Qualified

4.75 V

33 mA

e4

NOT SPECIFIED

NOT SPECIFIED

19.305 mm

TTL/H/L

SNJ5428J-00

Texas Instruments

NOR GATE

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

4

TTL

2

5

150 pF

IN-LINE

18 ns

2.54 mm

125 Cel

-55 Cel

DUAL

R-GDIP-T14

5.5 V

5.08 mm

7.62 mm

Not Qualified

4.5 V

57 mA

19.56 mm

TTL/H/L

SN74AS86N

Texas Instruments

XOR GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

4

TTL

2

5

5

IN-LINE

DIP14,.3

7.5 ns

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T14

5.5 V

5.08 mm

7.62 mm

Not Qualified

4.5 V

NOT SPECIFIED

NOT SPECIFIED

19.305 mm

AS

SN74H55N3

Texas Instruments

AND-OR-INVERT GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

1

TTL

8

5

IN-LINE

DIP14,.3

11 ns

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T14

5.25 V

4.75 V

SN54ALS86J-00

Texas Instruments

XOR GATE

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

4

TTL

2

5

IN-LINE

2.54 mm

125 Cel

-55 Cel

DUAL

R-GDIP-T14

5.5 V

5.08 mm

7.62 mm

Not Qualified

4.5 V

19.56 mm

ALS

SNJ54ACT00J

Texas Instruments

NAND GATE

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

NO

4

CMOS

MIL-PRF-38535

2

TUBE

5

5

50 pF

IN-LINE

DIP14,.3

9.5 ns

24 Amp

Gates

2.54 mm

125 Cel

-55 Cel

Tin/Lead (Sn/Pb)

DUAL

R-GDIP-T14

5.5 V

5.08 mm

7.62 mm

Not Qualified

4.5 V

.04 mA

e0

NOT SPECIFIED

NOT SPECIFIED

19.56 mm

ACT

SN74F27N3

Texas Instruments

NOR GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

3

TTL

3

5

5

IN-LINE

DIP14,.3

5.5 ns

20 Amp

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T14

5.5 V

4.5 V

12 mA

5962-01-015-9398

Texas Instruments

AND GATE

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC

NO

NO

TTL

5

5

IN-LINE

DIP14,.3

16 Amp

Gates

2.54 mm

125 Cel

-55 Cel

DUAL

R-XDIP-T14

Not Qualified

NOT SPECIFIED

NOT SPECIFIED

CD4002AE

Texas Instruments

NOR GATE

INDUSTRIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

2

CMOS

4

5

IN-LINE

120 ns

2.54 mm

85 Cel

-40 Cel

DUAL

R-PDIP-T14

12 V

5.08 mm

7.62 mm

Not Qualified

3 V

19.24 mm

4000/14000/40000

SN74HC03NR

Texas Instruments

NAND GATE

INDUSTRIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

4

CMOS

2

5

IN-LINE

131 ns

2.54 mm

85 Cel

OPEN-DRAIN

-40 Cel

DUAL

R-PDIP-T14

6 V

5.08 mm

7.62 mm

2 V

19.305 mm

HC/UH

SN7451NP3

Texas Instruments

AND-OR-INVERT GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

2

TTL

4

5

5

IN-LINE

DIP14,.3

22 ns

Gates

2.54 mm

70 Cel

0 Cel

DUAL

R-PDIP-T14

5.25 V

4.75 V

SN74ALS811J

Texas Instruments

XNOR GATE

COMMERCIAL

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC

NO

NO

TTL

IN-LINE

DIP14,.3

Gates

2.54 mm

70 Cel

OPEN-COLLECTOR

0 Cel

DUAL

R-XDIP-T14

Not Qualified

5962-9758101QCX

Texas Instruments

AND GATE

MILITARY

THROUGH-HOLE

14

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

NO

3

TTL

MIL-PRF-38535 Class Q

3

5

50 pF

IN-LINE

7.5 ns

20 Amp

2.54 mm

125 Cel

-55 Cel

DUAL

R-GDIP-T14

5.5 V

5.08 mm

7.62 mm

Qualified

4.5 V

9.7 mA

NOT SPECIFIED

NOT SPECIFIED

19.56 mm

F/FAST

Logic Gates

Logic gates are electronic circuits that perform basic logical operations on one or more inputs to produce a single output. They are the building blocks of digital circuits and are used to implement digital logic functions, such as AND, OR, NOT, XOR, and NAND.

Logic gates are designed using various technologies, including transistor-transistor logic (TTL), complementary metal-oxide-semiconductor (CMOS), and field-programmable gate arrays (FPGAs). They can be classified into three main types based on their operation: combinational logic gates, sequential logic gates, and programmable logic gates.

Combinational logic gates are logic gates that produce an output based solely on the current input values. These gates include the AND gate, OR gate, NOT gate, XOR gate, and NAND gate. The output of a combinational logic gate depends on the input values and the logic function implemented by the gate.

Sequential logic gates are logic gates that have memory elements and can store information. These gates include the SR flip-flop, D flip-flop, JK flip-flop, and T flip-flop. The output of a sequential logic gate depends on the current input values and the previous state of the gate.

Programmable logic gates are logic gates that can be programmed to implement different logic functions. These gates include programmable logic arrays (PLAs), programmable array logic (PALs), and field-programmable gate arrays (FPGAs). Programmable logic gates can be reprogrammed to adapt to changing system requirements.

Logic gates are used in various applications, including digital signal processing, control systems, and memory systems. They are essential components of digital systems and can be found in many electronic devices, such as computers, mobile phones, and digital cameras.