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Texas Instruments SN74HC126DT — Logic ICs

SN74HC126DT Buffer, Non-Inverting, 3-State, 2V-6V, SOIC-14

MPNSN74HC126DT
End of Life

Texas Instruments 74HC series SN74HC126DT, Buffer, Non-Inverting, 3-State, 2V ~ 6V supply, 4 elements, 1 bit per element, 7.8mA output, -40°C ~ 85°C, 14-SOIC.

$1.16Ref. price · indicative, final on quote
Texas Instruments SN74HC126DT datasheet (PDF)
Packaging14-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Series74HC
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74HC126DT specifications
ParameterValue
Series74HC
Logic typeBuffer, Non-Inverting
Output type3-State
MountingSurface Mount
Supply voltage2V ~ 6V
Current - output high, low7.8mA, 7.8mA
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case14-SOIC (0.154\", 3.90mm Width)
Number of elements4
Number of bits per element1

Product details

Quad non-inverting buffer with 3-state outputs — 2 V to 6 V supply

The SN74HC126DT: The four independent buffers share a common supply but have individual output-enable controls, allowing per-channel bus isolation or signal gating.

Output drive and fan-out

Output high/low current is 7.8 mA each.

The SOIC-14 package is standard for reflow assembly and hand rework; the 0.154-inch body width fits common PCB footprints.

For dual-sourcing, the 74HC family is widely second-sourced by multiple manufacturers; the SN74HC126DT itself is a TI part, but functionally equivalent 74HC126 buffers from other vendors (e.g., NXP, ON Semiconductor) share the same logic family and pinout.

Frequently asked questions

Is SN74HC126DT a 3-state buffer?

Yes, it is a non-inverting buffer with 3-state outputs. Each of the four channels has an independent output-enable pin that puts the output into high-impedance state when low.