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| label2 = Pins
| label2 = Pins
| data2 = 14
| data2 = 14
| label3 = Inputs
| label3 = No. of gates
| data3 = 4x 2 bits
| data3 = 4
| label4 = Outputs
| label4 = Inputs per gate
| data4 = 4x 1 bits
| data4 = 2
| label5 = Mounting Type
| label5 = Outputs per gate
| data5 = Through Hole, Surface Mount
| data5 = 1
| label6 = Packages
| label6 = Mounting Type
| data6 = [[PDIP-14]], [[SSOP-14]], [[SOIC-14]], [[CFP-14]], [[LCCC-20]], [[SO-14]], [[SO-8]]
| data6 = Through Hole, Surface Mount
| label7 = Packages
| data7 = [[DIP-14]], [[SSOP-14]], [[SOIC-14]], [[CFP-14]], [[LCCC-20]], [[SO-14]], [[SO-8]]
}}
}}


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}}
}}


The '''74x00''' (and its military grade equivalent '''54x00''') is a Quad 2-Input [[NAND gate]] and one of the most important components in digital electronics. The chip provides four groups of 2 inputs (labelled '''A''' and '''B''') and a single output (labelled '''Y''') which outputs a HIGH (1) signal when either or both inputs are LOW (0), otherwise when both inputs are HIGH, the output becomes LOW.


The '''74x00''' (and its military grade equivalent '''54x00''') is a Quad 2-Input [[NAND gate]] and one of the most important components in digital electronics.
{| class="wikitable"
|+7400 truth table
! colspan="2" | Input
! Output
|-
!A
!B
!Y
|-
|{{no2|0}} || {{no2|0}} || {{yes2|1}}
|-
|{{no2|0}} || {{yes2|1}} || {{yes2|1}}
|-
|{{yes2|1}} || {{no2|0}} || {{yes2|1}}
|-
|{{yes2|1}} || {{yes2|1}} || {{no2|0}}
|}


==== Pin Functions ====
==== Pin Functions ====
Line 642: Line 661:


== See also ==
== See also ==
[[Category:7400-Series integrated circuits]]

Latest revision as of 15:53, 19 January 2026

74x00 Logic Gate
Quad 2-Input NAND gate
Pins14
No. of gates4
Inputs per gate2
Outputs per gate1
Mounting TypeThrough Hole, Surface Mount
PackagesDIP-14, SSOP-14, SOIC-14, CFP-14, LCCC-20, SO-14, SO-8

The 74x00 (and its military grade equivalent 54x00) is a Quad 2-Input NAND gate and one of the most important components in digital electronics. The chip provides four groups of 2 inputs (labelled A and B) and a single output (labelled Y) which outputs a HIGH (1) signal when either or both inputs are LOW (0), otherwise when both inputs are HIGH, the output becomes LOW.

7400 truth table
Input Output
A B Y
0 0 1
0 1 1
1 0 1
1 1 0

Pin Functions

Pin I/O Description
Name CDIP, CFP, SOIC, PDIP, SO, SSOP SO CFP LCCC
1A 1 1 1 2 I Gate 1 input
1B 2 2 2 3 I Gate 1 input
1Y 3 3 3 4 O Gate 1 output
2A 4 6 6 6 I Gate 2 input
2B 5 7 7 8 I Gate 2 input
2Y 6 5 5 9 O Gate 2 output
3A 10 N/a 9 13 I Gate 3 input
3B 9 N/a 10 14 I Gate 3 input
3Y 8 N/a 8 12 O Gate 3 output
4A 13 N/a 12 18 I Gate 4 input
4B 12 N/a 13 19 I Gate 4 input
4Y 11 N/a 14 16 O Gate 4 output
GND 7 4 11 10 N/a Ground
NC N/a N/a N/a 1, 5, 7, 11, 15, 17 N/a No connect
VCC 14 8 4 20 N/a Power supply

Variant Specifications

AC (Advanced CMOS)

Absolute Maximum Ratings
Min Max Unit
VCC Supply voltage -0.5 7 V
IIK Input current clamp VI < 0 V or VI > VCC ±20 mA
IOK Output current clamp VO < 0 V or VO > VCC ±20 mA
IO Continuous output current VO < 0 V or VO > VCC ±50 mA
Continuous current through VCC or GND ±200 mA
Recommended Operating Conditions
54AC00 74AC00 Unit
Min Max Min Max
VCC Supply voltage 2 6 2 6 V
VIH High-level input voltage VCC = 3 V 2.1 2.1 V
VCC = 4.5 V 3.15 1.15
VCC = 5.5 V 3.85 1.85
VIL Low-level input voltage VCC = 3 V 0.9 0.9 V
VCC = 4.5 V 1.35 1.35
VCC = 5.5 V 1.65 1.65
VI Input voltage 0 VCC 0 VCC V
VO Output voltage 0 VCC 0 VCC V
IOH High-level output current VCC = 3 V -12 -12 mA
VCC = 4.5 V -24 -24
VCC = 5.5 V -24 -24
IOL Low-level output current VCC = 3 V 12 12 mA
VCC = 4.5 V 24 24
VCC = 5.5 V 24 24
Δt/Δv Input transition rise or fall rate 8 8 ns/V
TA Operating free-air temperature -55 125 -40 85 °C

AHC (Advanced high-speed CMOS)

AHCT (Advanced high-speed CMOS schottky)

ALS (Advanced low-power schottky TTL)

AS (Advanced schottky TTL)

HC (High-speed CMOS)

Absolute Maximum Ratings
Min Max Unit
VCC Supply voltage -0.5 7 V
IIK Input current clamp VI < -0.5 V or VI > VCC + 0.5 V ±20 mA
IOK Output current clamp VO < -0.5 V or VO > VCC + 0.5 V ±20 mA
IO Continuous output current VO < -0.5 V or VO > VCC + 0.5 V ±25 mA
Continuous current through VCC or GND ±50 mA
Recommended Operating Conditions
Min Nom Max Unit
VCC Supply voltage 2 5 6 V
VIH High-level input voltage VCC = 2 V 1.5 V
VCC = 4.5 V 3.15
VCC = 6 V 4.2
VIL Low-level input voltage VCC = 2 V 0.5 V
VCC = 4.5 V 1.35
VCC = 6 V 1.8
VI Input voltage 0 VCC V
VO Output voltage 0 VCC V
Δt/Δv Input transition rise or fall rate 500 ns/V
111
67
TA Operating free-air temperature 74LS00 -55 125 °C
54LS00 0 70

HCT (High-speed CMOS, TTL compatible)

Absolute Maximum Ratings
Min Max Unit
VCC Supply voltage -0.5 7 V
IIK Input current clamp VI < -0.5 V or VI > VCC + 0.5 V ±20 mA
IOK Output current clamp VO < -0.5 V or VO > VCC + 0.5 V ±20 mA
IO Continuous output current VO < -0.5 V or VO > VCC + 0.5 V ±25 mA
Continuous current through VCC or GND ±50 mA
Recommended Operating Conditions
Min Nom Max Unit
VCC Supply voltage 4.5 5.5 V
VIH High-level input voltage 2 V
VIL Low-level input voltage 0.8 V
VI Input voltage 0 VCC V
VO Output voltage 0 VCC V
TA Operating free-air temperature 74LS00 -55 125 °C
54LS00 0 70

LS (High-speed TTL)

Absolute Maximum Ratings
Min Max Unit
Supply voltage, VCC 7 V
Input voltage 7 V
Recommended Operating Conditions
Min Nom Max Unit
VCC Supply voltage 4.5 5 5.5 V
VIH High-level input voltage 2 V
VIL Low-level input voltage 74LS00 0.8 V
54LS00 0.7
IOH High-level output current -0.7 mA
IOL Low-level output current 74LS00 8 mA
54LS00 4
TA Operating free-air temperature 74LS00 -55 125 °C
54LS00 0 70

LV (Low voltage TTL)

F (Very high-speed TTL)

C (CMOS, 4000-series compliant)

S (Schottky TTL)

See also

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