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Texas Instruments SN74HCS14BQAR — Interface & Transceivers

SN74HCS14BQAR Texas Instruments Hex Inverter

MPNSN74HCS14BQAR
End of Life

Texas Instruments 74HCS series hex inverter with Schmitt trigger inputs, SN74HCS14BQAR, 2V-6V supply, 6 circuits, 14-QFN exposed pad package, -55°C to 125°C.

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

Specifications

SN74HCS14BQAR specifications
ParameterValue
Series74HCS
Logic typeInverter
MountingSurface Mount
Supply voltage2V ~ 6V
Current - quiescent2 µA
Current - output high, low7.8mA, 7.8mA
I/O channels1
Operating temperature-55°C ~ 125°C
PackageTape & Reel (TR); Cut Tape (CT)
FeaturesSchmitt Trigger Input
Case14-QFN Exposed Pad
Number of circuits6
Input logic level - low1V ~ 3V
Input logic level - high1.5V ~ 4.2V
Max propagation delay @ v, max CL16ns @ 6V, 50pF

Product details

Six inverters in a 3x2.5 mm footprint

The SN74HCS14BQAR packs six independent inverter gates with Schmitt-trigger inputs into a 14-WQFN package measuring 3x2.5 mm. Each gate accepts a single input and inverts the logic state, with the Schmitt trigger providing hysteresis that cleans up noisy or slow-rising signals.

Temperature range and timing

The quiescent current maxes out at 2 µA, so battery-powered remote sensors and always-on monitoring circuits don't drain the cell during idle periods. Propagation delay is 16 ns maximum at 6 V with a 50 pF load. That gives a clean switching window for clock conditioning, debouncing switch inputs, or squaring up sensor edges before feeding them into a microcontroller GPIO.

Package and board integration

The 0.5 mm pitch pads need a controlled impedance trace width for signal integrity at the gate's switching speed, though the 16 ns delay means edge rates are moderate. Available in Tape & Reel (TR) or Cut Tape (CT) — the reel format suits automated pick-and-place for volume production, while cut tape works for prototype runs and small-batch builds.

The part is ROHS3 compliant, meeting the current EU restriction directive for lead-free soldering processes.

Frequently asked questions

What is the closest second-source for SN74HCS14BQAR?

The SN74HCS14QDRQ1 is the automotive-grade (AEC-Q100) variant of the same 74HCS14 die. A board layout change is required to swap between them.

What compliance documentation does Texas Instruments provide for SN74HCS14BQAR?

Texas Instruments provides ROHS3 compliance certification for this part. The standard documentation package includes the datasheet, application notes, and PCN notifications for any manufacturing changes.