QCCN Logic Gates 1,922

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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

SN54ALS22BFKR

Texas Instruments

NAND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

2

TTL

4

5

50 pF

CHIP CARRIER

65 ns

1.27 mm

125 Cel

OPEN-COLLECTOR

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Not Qualified

4.5 V

1.5 mA

8.89 mm

ALS

SN74HC08FH

Texas Instruments

AND GATE

INDUSTRIAL

NO LEAD

20

QCCN

SQUARE

CERAMIC

NO

YES

4

CMOS

2

5

2/6

50 pF

CHIP CARRIER

LCC20,.35SQ

125 ns

4 Amp

Gates

1.27 mm

85 Cel

-40 Cel

QUAD

S-XQCC-N20

6 V

Not Qualified

2 V

SN54ALS38AFH

Texas Instruments

NAND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC

NO

YES

4

TTL

2

5

5

CHIP CARRIER

LCC20,.35SQ

59 ns

Gates

1.27 mm

125 Cel

OPEN-COLLECTOR

-55 Cel

QUAD

S-XQCC-N20

5.5 V

Not Qualified

4.5 V

SN54ALS133FH

Texas Instruments

NAND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC

NO

YES

1

TTL

13

5

5

CHIP CARRIER

LCC20,.35SQ

28 ns

Gates

1.27 mm

125 Cel

-55 Cel

QUAD

S-XQCC-N20

5.5 V

Not Qualified

4.5 V

NOT SPECIFIED

NOT SPECIFIED

SNJ54ALS03AFH

Texas Instruments

NAND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC

NO

YES

4

TTL

38535Q/M;38534H;883B

2

5

5

CHIP CARRIER

LCC20,.35SQ

59 ns

Gates

1.27 mm

125 Cel

OPEN-COLLECTOR

-55 Cel

QUAD

S-XQCC-N20

5.5 V

Not Qualified

4.5 V

NOT SPECIFIED

NOT SPECIFIED

SN54ALS1008AFKR

Texas Instruments

AND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

4

TTL

2

5

50 pF

CHIP CARRIER

11 ns

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Not Qualified

4.5 V

9.3 mA

IOH = 1MA @ VOH = 2.4V; IOL = 12MA @ VOL = 0.4V

8.89 mm

ALS

JM38510/33301

Texas Instruments

NAND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

4

TTL

2

5

CHIP CARRIER

6.5 ns

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

5.5 V

1.9 mm

8.885 mm

Not Qualified

4.5 V

8.885 mm

F/FAST

SNJ54ALS22AFH

Texas Instruments

NAND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC

NO

YES

2

TTL

38535Q/M;38534H;883B

4

5

5

CHIP CARRIER

LCC20,.35SQ

65 ns

Gates

1.27 mm

125 Cel

OPEN-COLLECTOR

-55 Cel

QUAD

S-XQCC-N20

5.5 V

Not Qualified

4.5 V

SN74HC09FH

Texas Instruments

AND GATE

INDUSTRIAL

NO LEAD

20

QCCN

SQUARE

CERAMIC

NO

YES

4

CMOS

2

5

2/6

CHIP CARRIER

LCC20,.35SQ

131 ns

Gates

1.27 mm

85 Cel

OPEN-DRAIN

-40 Cel

QUAD

S-XQCC-N20

6 V

Not Qualified

2 V

5962-87615022X

Texas Instruments

AND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

4

CMOS

MIL-PRF-38535

2

3

CHIP CARRIER

12.5 ns

125 Cel

-55 Cel

QUAD

S-CQCC-N20

6 V

Qualified

2 V

AC

SNJ54ALS01FK

Texas Instruments

NAND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

4

TTL

38535Q/M;38534H;883B

2

5

50 pF

CHIP CARRIER

LCC20,.35SQ

66 ns

Gates

1.27 mm

125 Cel

OPEN-COLLECTOR

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Not Qualified

4.5 V

3 mA

NOT SPECIFIED

NOT SPECIFIED

8.89 mm

ALS

5962-9680501Q2X

Texas Instruments

INVERTER

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

6

CMOS

MIL-STD-883

1

3.3

50 pF

CHIP CARRIER

13 ns

8 Amp

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Qualified

2 V

.02 mA

NOT SPECIFIED

NOT SPECIFIED

8.89 mm

AHC

SNJ54HC804FK

Texas Instruments

NAND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

6

CMOS

38535Q/M;38534H;883B

2

5

2/6

150 pF

CHIP CARRIER

LCC20,.35SQ

56 ns

6 Amp

Gates

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

6 V

2.03 mm

8.89 mm

Not Qualified

2 V

NOT SPECIFIED

NOT SPECIFIED

8.89 mm

HC/UH

5962-9218201M2A

Texas Instruments

NAND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

3

CMOS

MIL-STD-883

3

TUBE

5

5

50 pF

CHIP CARRIER

LCC20,.35SQ

10 ns

24 Amp

Gate

1.27 mm

125 Cel

-55 Cel

Tin/Lead (Sn/Pb)

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Qualified

4.5 V

.08 mA

e0

NOT SPECIFIED

NOT SPECIFIED

8.89 mm

ACT

5962-86865012X

Texas Instruments

NAND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

3

TTL

MIL-STD-883

3

5

50 pF

CHIP CARRIER

12 ns

4 Amp

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Qualified

4.5 V

2.2 mA

NOT SPECIFIED

NOT SPECIFIED

8.89 mm

ALS

SN54ALS20FH

Texas Instruments

NAND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC

NO

YES

2

TTL

4

5

5

CHIP CARRIER

LCC20,.35SQ

12.5 ns

Gates

1.27 mm

125 Cel

-55 Cel

QUAD

S-XQCC-N20

5.5 V

Not Qualified

4.5 V

SN54HC4078AFH

Texas Instruments

OR/NOR GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC

NO

YES

1

CMOS

8

5

5

CHIP CARRIER

LCC20,.35SQ

195 ns

Gates

1.27 mm

125 Cel

-55 Cel

QUAD

S-XQCC-N20

6 V

Not Qualified

2 V

SNJ54AS1036AFKR

Texas Instruments

NOR GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

4

TTL

2

5

50 pF

CHIP CARRIER

4.8 ns

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Not Qualified

4.5 V

23 mA

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

8.89 mm

AS

5962-86872012X

Texas Instruments

NAND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

UNSPECIFIED

YES

4

TTL

MIL-STD-883

2

5

CHIP CARRIER

15 ns

125 Cel

OPEN-COLLECTOR

-55 Cel

TIN LEAD

QUAD

S-XQCC-N20

5.5 V

Not Qualified

4.5 V

e0

F/FAST

SN54HC51FH

Texas Instruments

AND-OR-INVERT GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC

NO

YES

2

CMOS

6

5

2/6

CHIP CARRIER

LCC20,.35SQ

210 ns

Gates

1.27 mm

125 Cel

-55 Cel

QUAD

S-XQCC-N20

6 V

Not Qualified

2 V

SN74HC27FHP4

Texas Instruments

NOR GATE

INDUSTRIAL

NO LEAD

20

QCCN

SQUARE

CERAMIC

NO

YES

3

CMOS

3

5

2/6

CHIP CARRIER

LCC20,.35SQ

115 ns

Gates

1.27 mm

85 Cel

-40 Cel

QUAD

S-XQCC-N20

6 V

2 V

NOT SPECIFIED

NOT SPECIFIED

SN54ALS15AFKR

Texas Instruments

AND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

3

TTL

3

5

50 pF

CHIP CARRIER

59 ns

1.27 mm

125 Cel

OPEN-COLLECTOR

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Not Qualified

4.5 V

3 mA

8.89 mm

ALS

SN54AS20FK

Texas Instruments

NAND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

2

TTL

4

5

5

50 pF

CHIP CARRIER

LCC20,.35SQ

5 ns

20 Amp

Gates

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Not Qualified

4.5 V

8.7 mA

8.89 mm

AS

SN54S38FK

Texas Instruments

NAND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

4

TTL

2

5

5

50 pF

CHIP CARRIER

LCC20,.35SQ

10 ns

Gates

1.27 mm

125 Cel

OPEN-COLLECTOR

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Not Qualified

4.5 V

80 mA

8.89 mm

S

SN54AS86FK

Texas Instruments

XOR GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

4

TTL

2

5

5

CHIP CARRIER

LCC20,.35SQ

Gates

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Not Qualified

4.5 V

NOT SPECIFIED

NOT SPECIFIED

8.89 mm

AS

SN54ALS22AFH

Texas Instruments

NAND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC

NO

YES

2

TTL

4

5

5

CHIP CARRIER

LCC20,.35SQ

65 ns

Gates

1.27 mm

125 Cel

OPEN-COLLECTOR

-55 Cel

QUAD

S-XQCC-N20

5.5 V

Not Qualified

4.5 V

SN54F27FK

Texas Instruments

NOR GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

3

TTL

3

5

5

50 pF

CHIP CARRIER

LCC20,.35SQ

5.5 ns

20 Amp

Gates

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Not Qualified

4.5 V

12 mA

NOT SPECIFIED

NOT SPECIFIED

8.89 mm

F/FAST

SN54ALS8003FK

Texas Instruments

NAND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

2

TTL

2

5

5

50 pF

CHIP CARRIER

LCC20,.35SQ

10 ns

Gates

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Not Qualified

4.5 V

1.5 mA

NOT SPECIFIED

NOT SPECIFIED

8.89 mm

ALS

SNJ54HC7001FK-00

Texas Instruments

AND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

4

CMOS

2

5

50 pF

CHIP CARRIER

39 ns

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

6 V

2.03 mm

8.89 mm

Not Qualified

2 V

8.89 mm

HC/UH

SN74HC808FH

Texas Instruments

AND GATE

INDUSTRIAL

NO LEAD

20

QCCN

SQUARE

CERAMIC

NO

YES

CMOS

5

2/6

CHIP CARRIER

LCC20,.35SQ

Gates

1.27 mm

85 Cel

-40 Cel

QUAD

S-XQCC-N20

6 V

Not Qualified

2 V

SNJ54ALS10AFH

Texas Instruments

NAND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC

NO

YES

3

TTL

38535Q/M;38534H;883B

3

5

5

CHIP CARRIER

LCC20,.35SQ

16 ns

Gates

1.27 mm

125 Cel

-55 Cel

QUAD

S-XQCC-N20

5.5 V

Not Qualified

4.5 V

SN74HC30FH4

Texas Instruments

NAND GATE

INDUSTRIAL

NO LEAD

20

QCCN

SQUARE

CERAMIC

NO

YES

1

CMOS

8

5

2/6

CHIP CARRIER

LCC20,.35SQ

165 ns

Gates

1.27 mm

85 Cel

-40 Cel

QUAD

S-XQCC-N20

6 V

2 V

SN54ALS808FH-00

Texas Instruments

AND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

6

TTL

2

5

50 pF

CHIP CARRIER

10 ns

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.54 mm

8.89 mm

Not Qualified

4.5 V

16 mA

8.89 mm

ALS

SN54ALS11FH-00

Texas Instruments

AND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

3

TTL

3

5

50 pF

CHIP CARRIER

12 ns

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.54 mm

8.89 mm

Not Qualified

4.5 V

3 mA

8.89 mm

ALS

SN54HC04FK

Texas Instruments

INVERTER

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

6

CMOS

1

5

2/6

50 pF

CHIP CARRIER

LCC20,.35SQ

145 ns

4 Amp

Gates

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

6 V

2.03 mm

8.89 mm

Not Qualified

2 V

8.89 mm

HC/UH

SNJ54AS810FK

Texas Instruments

XNOR GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

4

TTL

38535Q/M;38534H;883B

2

5

CHIP CARRIER

LCC20,.35SQ

9 ns

Gates

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Not Qualified

4.5 V

NOT SPECIFIED

NOT SPECIFIED

8.89 mm

AS

SNJ54F04FK

Texas Instruments

INVERTER

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

6

TTL

MIL-PRF-38535

1

TUBE

5

5

50 pF

CHIP CARRIER

LCC20,.35SQ

6.5 ns

20 Amp

Gates

1.27 mm

125 Cel

-55 Cel

TIN LEAD

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Not Qualified

4.5 V

15.3 mA

e0

8.89 mm

F/FAST

SNJ54HC11FKR

Texas Instruments

AND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

3

CMOS

MIL-PRF-38535

3

5

50 pF

CHIP CARRIER

150 ns

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

6 V

2.03 mm

8.89 mm

Not Qualified

2 V

8.89 mm

HC/UH

SN54HC08FK

Texas Instruments

AND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

4

CMOS

2

5

2/6

50 pF

CHIP CARRIER

LCC20,.35SQ

150 ns

4 Amp

Gates

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

6 V

2.03 mm

8.89 mm

Not Qualified

2 V

8.89 mm

HC/UH

SNJ54ALS136FK

Texas Instruments

XOR GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

4

TTL

38535Q/M;38534H;883B

2

5

50 pF

CHIP CARRIER

LCC20,.35SQ

55 ns

Gates

1.27 mm

125 Cel

OPEN-COLLECTOR

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Not Qualified

4.5 V

5.9 mA

NOT SPECIFIED

NOT SPECIFIED

8.89 mm

ALS

SNJ54AC08FK

Texas Instruments

AND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

4

CMOS

MIL-PRF-38535

2

TUBE

3.3

3.3/5

50 pF

CHIP CARRIER

LCC20,.35SQ

12.5 ns

24 Amp

Gate

1.27 mm

125 Cel

-55 Cel

Tin/Lead (Sn/Pb)

QUAD

S-CQCC-N20

6 V

2.03 mm

8.89 mm

Not Qualified

2 V

.04 mA

e0

NOT SPECIFIED

NOT SPECIFIED

8.89 mm

AC

SNJ54ALS38FH

Texas Instruments

NAND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC

NO

YES

4

TTL

38535Q/M;38534H;883B

2

5

5

CHIP CARRIER

LCC20,.35SQ

59 ns

Gates

1.27 mm

125 Cel

OPEN-COLLECTOR

-55 Cel

QUAD

S-XQCC-N20

5.5 V

Not Qualified

4.5 V

SN54HC14FK/883

Texas Instruments

INVERTER

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

6

CMOS

MIL-STD-883

1

5

CHIP CARRIER

190 ns

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

6 V

2.03 mm

8.89 mm

2 V

8.89 mm

HC/UH

SNJ54HC7266FK

Texas Instruments

XNOR GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC

NO

YES

4

CMOS

38535Q/M;38534H;883B

2

5

2/6

CHIP CARRIER

LCC20,.35SQ

150 ns

Gates

1.27 mm

125 Cel

-55 Cel

QUAD

S-XQCC-N20

6 V

Not Qualified

2 V

JM38510/37302B2A

Texas Instruments

NOR GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

3

TTL

MIL-M-38510 Class B

3

5

CHIP CARRIER

26 ns

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Not Qualified

4.5 V

NOT SPECIFIED

NOT SPECIFIED

8.89 mm

ALS

SNJ54HC32FK-00

Texas Instruments

OR GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

4

CMOS

2

5

50 pF

CHIP CARRIER

30 ns

1.27 mm

125 Cel

-55 Cel

QUAD

S-CQCC-N20

6 V

2.03 mm

8.89 mm

Not Qualified

2 V

8.89 mm

HC/UH

SNJ54LS33FK

Texas Instruments

NOR GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

NO

YES

4

TTL

38535Q/M;38534H;883B

2

5

5

45 pF

CHIP CARRIER

LCC20,.35SQ

28 ns

Gates

1.27 mm

125 Cel

OPEN-COLLECTOR

-55 Cel

QUAD

S-CQCC-N20

5.5 V

2.03 mm

8.89 mm

Not Qualified

4.5 V

13.8 mA

NOT SPECIFIED

NOT SPECIFIED

8.89 mm

LS

SN54HC11FH

Texas Instruments

AND GATE

MILITARY

NO LEAD

20

QCCN

SQUARE

CERAMIC

NO

YES

3

CMOS

3

5

2/6

CHIP CARRIER

LCC20,.35SQ

150 ns

Gates

1.27 mm

125 Cel

-55 Cel

QUAD

S-XQCC-N20

6 V

Not Qualified

2 V

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.