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Texas Instruments SN74LS126AN — Analog & Data Acquisition

SN74LS126AN Texas Instruments 74LS Buffer, 3-State, 14-DIP

MPNSN74LS126AN
End of Life

Texas Instruments 74LS series, SN74LS126AN, Buffer Non-Inverting, 3-State output, 4.75V ~ 5.25V supply, 14-DIP (0.300", 7.62mm), Through Hole, Tube.

$0.89Ref. price · indicative, final on quote
Texas Instruments SN74LS126AN datasheet (PDF)
Packaging14-DIP (0.300", 7.62mm)
RoHSROHS3 Compliant
Series74LS
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74LS126AN specifications
ParameterValue
Series74LS
Logic typeBuffer, Non-Inverting
Output type3-State
MountingThrough Hole
Supply voltage4.75V ~ 5.25V
Current - output high, low2.6mA, 24mA
Operating temperature0°C ~ 70°C (TA)
PackageTube
Case14-DIP (0.300\", 7.62mm)
Number of elements4
Number of bits per element1

Product details

Quad 3-state bus buffer — 74LS family, through-hole DIP

The SN74LS126AN: Output drive capability is 2.6 mA source (high) and 24 mA sink (low), which is typical for the 74LS family and sufficient for driving TTL inputs, LEDs, or short bus traces in a backplane.

Through-hole DIP package — board-fit and handling

The supplier device package is 14-PDIP. Supplied in a tube — the standard handling format for through-hole DIPs — which protects the leads during shipping and kitting.

Sourcing and availability — quoted to order

No stock-holding claim is made; availability is verified per inquiry.

Frequently asked questions

What is the closest functional second-source to SN74LS126AN — the SN74LS645-1N?

The SN74LS645-1N is a different device: it is an octal (8-bit) transceiver with non-inverting outputs, not a quad buffer. It has 8 bits per element versus 1, and a different pinout (20-pin vs 14-pin). It will not drop into the same socket without rewiring.

What compliance documentation does Texas Instruments provide for SN74LS126AN?

The part is ROHS3 Compliant. No UL, IEC, or REACH documentation is listed in the available records.