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Texas Instruments SN74AUP1G126DBVT — Logic ICs

TI SN74AUP1G126DBVT Single Buffer Gate, 0.8V–3.6V, SOT-23-5

MPNSN74AUP1G126DBVT
End of Life

Texas Instruments 74AUP series, SN74AUP1G126DBVT, single buffer non-inverting 3-state output, 0.8V to 3.6V supply, 4mA output drive, -40°C to 85°C, SOT-23-5 package.

$1.07Ref. price · indicative, final on quote
PackagingSC-74A, SOT-753
RoHSROHS3 Compliant
Series74AUP
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74AUP1G126DBVT specifications
ParameterValue
Series74AUP
Logic typeBuffer, Non-Inverting
Output type3-State
MountingSurface Mount
Voltage0.8V ~ 3.6V
Current - output high, low4mA, 4mA
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
CaseSC-74A, SOT-753
Number of elements1
Number of bits per element1

Product details

Single buffer gate for ultra-low-voltage buses

Its supply range from 0.8V to 3.6V lets it interface directly with 1.2V or 1.8V core logic without an extra level translator, saving board area and BOM cost. The 3-state output goes high-impedance when the output-enable pin is low, making it a clean choice for shared data lines or GPIO expansion on battery-operated gear.

Supply voltage — the main event

The 0.8V to 3.6V operating range is what sets this part apart from older 3.3V-only buffers. If your design uses a 1.2V or 1.8V MCU I/O bank, this buffer runs on the same rail and preserves signal integrity without a second supply. At the top end, 3.6V covers standard 3.3V logic with margin for a noisy rail. The 4mA symmetrical output drive is modest — sized for a single CMOS load or a short trace, not a 50-ohm backplane. Use it where the fan-out is one or two inputs; for heavier loads step up to the LVC or AHC family.

Temperature and environment

Not specified for automotive under-hood or extended 105°C+ environments — if the board sees engine bay heat, look at the AEC-Q100 qualified 74LVC variants.

Housed in the SOT-23-5 (SC-74A) package, this is a five-pin surface-mount device on 0.95 mm pitch. The footprint is shared across many single-gate logic parts from TI and Nexperia, so a PCB land pattern designed for one usually accepts the others without a layout change.

Frequently asked questions

What is the difference between SN74AUP1G126DBVT and SN74LVC1G126DBVT?

The main difference is supply voltage floor. The AUP variant operates down to 0.8V, while the LVC variant typically starts at 1.65V. For 1.2V or 1.8V core logic the AUP is the right choice; for 3.3V-only designs the LVC works and offers higher drive (typically 24mA vs 4mA). Both are single non-inverting buffers with 3-state output in the same SOT-23-5 package.

Can SN74AUP1G126DBVT be used in 5V systems?

No. The absolute maximum supply voltage is 3.6V, so this buffer cannot be used in a 5V system. Overvoltage on the supply pin will damage the device.