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Texas Instruments SN74HCS00BQAR — Logic ICs

SN74HCS00BQAR 74HCS Quad 2-Input NAND Gate, 12 ns @ 6V

MPNSN74HCS00BQAR
End of Life

Texas Instruments 74HCS series, Logic Type NAND Gate, Schmitt Trigger Input, Supply Voltage 2V ~ 6V, 4 Circuits, 2 Inputs, 14-QFN Exposed Pad, -55°C ~ 125°C.

$0.58Ref. price · indicative, final on quote
Texas Instruments SN74HCS00BQAR datasheet (PDF)
Packaging14-QFN Exposed Pad
RoHSROHS3 Compliant
Series74HCS
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74HCS00BQAR specifications
ParameterValue
Series74HCS
Logic typeNAND Gate
MountingSurface Mount
Supply voltage2V ~ 6V
Current - quiescent2 µA
Current - output high, low7.8mA, 7.8mA
I/O channels2
Operating temperature-55°C ~ 125°C
PackageTape & Reel (TR); Cut Tape (CT)
FeaturesSchmitt Trigger Input
Case14-QFN Exposed Pad
Number of circuits4
Input logic level - low1V ~ 3V
Input logic level - high1.5V ~ 4.2V
Max propagation delay @ v, max CL12ns @ 6V, 50pF

Product details

What the ratings mean for the BOM

The SN74HCS00BQAR: The Schmitt-trigger inputs provide hysteresis that cleans up slow or noisy edges – critical for long trace runs, sensor interfaces, or oscillator circuits where a standard CMOS input would chatter. The 2 µA maximum quiescent current means this gate adds negligible standby draw, so it fits into battery-backed or always-on domains without a power budget hit. The 7.8 mA output drive is enough to drive a single standard CMOS load or a low-power LED, but you will need a buffer for heavier fan-out.

Frequently asked questions

Is SN74HCS00BQAR compatible with 3.3V logic?

Yes. The 2V to 6V supply range covers both 3.3V and 5V systems directly, and the Schmitt-trigger inputs accept the logic levels from those rails without external level shifting. Input logic low is 1V to 3V; input logic high is 1.5V to 4.2V, so a 3.3V CMOS output drives it cleanly.

What are the alternatives to SN74HCS00BQAR?

The SN74LV00APWR is a quad 2-input NAND gate in the 74LV family, but it lacks Schmitt-trigger inputs and operates only up to 85°C. If you need an inverter instead of a NAND, the SN74HCS04PWR or the automotive-qualified SN74HCS14QDRQ1 are in the same 74HCS series with Schmitt-trigger inputs and similar supply and temperature ratings.