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Texas Instruments SN74HCS02BQAR — Signal Isolation
Texas Instruments

SN74HCS02BQAR Quad 2-Input NOR Gate, Schmitt Trigger, 2V-6V

MPNSN74HCS02BQAR
End of Life

Texas Instruments 74HCS series, Logic Type NOR Gate, 4 Circuits, 2 Inputs, Schmitt Trigger Input, 2V ~ 6V Supply, -40°C ~ 125°C, Surface Mount, 14-QFN Exposed Pad.

$0.58Ref. price · indicative, final on quote
SN74HCS02BQAR datasheet
Packaging14-QFN Exposed Pad
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

SN74HCS02BQAR Technical Specifications
ParameterValue
Series74HCS
Logic typeNOR Gate
Mounting typeSurface Mount
Voltage2V ~ 6V
Current - quiescent2 µA
Current - output high, low7.8mA, 7.8mA
Number of inputs2
Operating temperature-40°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

Supply range and noise immunity

The SN74HCS02BQAR: The 2V to 6V supply range lets this gate bridge 3.3V and 5V logic domains without an external level shifter, simplifying the BOM. The Schmitt-trigger inputs accept slow edges (e.g., from RC debounce circuits or long PCB traces) without oscillation, with a typical hysteresis of several hundred millivolts. Quiescent current maxes at 2 µA, so it adds negligible standby draw in battery-backed systems.

Lifecycle and sourcing

The SN74HCS02BQAR is an active, ROHS3-compliant part from TI's 74HCS series. No end-of-life notice or last-time-buy schedule is in effect. For volume production or BOM qualification, this part is sourced through independent distribution and quoted to order against an RFQ — availability and current pricing confirmed at quote time.

Frequently asked questions

Is SN74HCS02BQAR a Schmitt trigger device?

Yes, each of the four NOR gates has a Schmitt-trigger input, providing hysteresis for noise rejection on slow or noisy signals.

Where can I buy SN74HCS02BQAR?

This part is sourced through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time.

What is the equivalent of SN74HCS02BQAR?

The SN74HCS04PWR is a hex inverter from the same 74HCS family with Schmitt-trigger inputs; it differs in logic function (inverter vs NOR) and circuit count (6 vs 4). For a direct functional replacement, stay within the 74HCS NOR gate family.