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Texas Instruments SN74LS00NS — Logic ICs

SN74LS00NS 74LS Quad 2-Input NAND Gate

MPNSN74LS00NS
End of Life

Texas Instruments 74LS series SN74LS00NS, Quad 2-Input NAND Gate, 4.75V ~ 5.25V supply, 15ns propagation delay @ 5V/15pF, 0°C to 70°C, 14-SOIC package, Tube.

$1.38Ref. price · indicative, final on quote
Texas Instruments SN74LS00NS datasheet (PDF)
Packaging14-SOIC (0.209", 5.30mm Width)
RoHSROHS3 Compliant
Series74LS
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74LS00NS specifications
ParameterValue
Series74LS
Logic typeNAND Gate
MountingSurface Mount
Supply voltage4.75V ~ 5.25V
Current - output high, low400µA, 8mA
I/O channels2
Operating temperature0°C ~ 70°C (TA)
PackageTube
Case14-SOIC (0.209\", 5.30mm Width)
Number of circuits4
Input logic level - low0.8V
Input logic level - high2V
Max propagation delay @ v, max CL15ns @ 5V, 15pF

Product details

Output drive — 400 µA high, 8 mA low

The output can source 400 µA and sink 8 mA. That is enough to drive one or two standard TTL loads, or a CMOS input with a pull-up. Do not plan on driving an LED directly or fanning out to more than about ten 74LS inputs — the low-side current is the limiting factor. If you need more drive, look at the 74ALS or 74F variants which offer higher output current. For a simple gate-to-gate connection, this drive level is adequate and keeps power dissipation low.

For a drop-in replacement in an existing 5 V TTL board, this is the correct part.

Frequently asked questions

What is the propagation delay of SN74LS00NS?

The maximum propagation delay is 15 ns at 5 V with a 15 pF load. This is the time from input crossing the threshold to output crossing the threshold.

What is the equivalent of SN74LS00NS?

A direct functional equivalent is any standard 74LS00 quad 2-input NAND gate in a 14-SOIC package, such as the SN74LS00D (SOIC-14) or SN74LS00N (DIP-14). The SN74F00DR is a faster (5 ns) 74F-series alternative but is not pin-compatible in the same package — verify the footprint before substituting.