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SN74AHCT126-Q1

ACTIVE

Automotive 4-ch, 4.5-V to 5.5-V buffers with TTL-compatible CMOS inputs and 3-state outputs

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Data sheet

SN74AHCT126-Q1

ACTIVE
Data sheet Order now

Product details

Technology family AHCT Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 5.5 Number of channels 4 IOL (max) (mA) 8 Supply current (max) (µA) 20 IOH (max) (mA) -8 Input type TTL-Compatible CMOS Output type 3-State Features Balanced outputs, Over-voltage tolerant inputs, Very high speed (tpd 5-10ns) Rating Automotive Operating temperature range (°C) -40 to 125
Technology family AHCT Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 5.5 Number of channels 4 IOL (max) (mA) 8 Supply current (max) (µA) 20 IOH (max) (mA) -8 Input type TTL-Compatible CMOS Output type 3-State Features Balanced outputs, Over-voltage tolerant inputs, Very high speed (tpd 5-10ns) Rating Automotive Operating temperature range (°C) -40 to 125
SOIC (D) 14 51.9 mm² 8.65 x 6 TSSOP (PW) 14 32 mm² 5 x 6.4 WQFN (BQA) 14 7.5 mm² 3 x 2.5

  • AEC-Q100 qualified for automotive applications:

    • Device temperature grade 1: -40°C to +125°C

    • Device HBM ESD classification level 2

    • Device CDM ESD classification level C4B

  • Available in wettable flank QFN (WBQA) package

  • Operating range of 4.5V to 5.5V

  • ±8mA output drive at 5V

  • Inputs are TTL-voltage compatible

  • Latch-up performance exceeds 250mA per JESD 17

  • AEC-Q100 qualified for automotive applications:

    • Device temperature grade 1: -40°C to +125°C

    • Device HBM ESD classification level 2

    • Device CDM ESD classification level C4B

  • Available in wettable flank QFN (WBQA) package

  • Operating range of 4.5V to 5.5V

  • ±8mA output drive at 5V

  • Inputs are TTL-voltage compatible

  • Latch-up performance exceeds 250mA per JESD 17

The SN74AHCT126-Q1 device is a quadruple bus buffer gate featuring independent line drivers with 3-state outputs. Each output is disabled when the associated output-enable (OE) input is low. When OE is high, the respective gate passes the data from the A input to its Y output.

To ensure the high-impedance state during power up or power down, OE should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver.

The SN74AHCT126-Q1 device is a quadruple bus buffer gate featuring independent line drivers with 3-state outputs. Each output is disabled when the associated output-enable (OE) input is low. When OE is high, the respective gate passes the data from the A input to its Y output.

To ensure the high-impedance state during power up or power down, OE should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet SN74AHCT126-Q1 Automotive Quadruple Bus Buffer Gate with 3-State Outputs datasheet (Rev. D) PDF | HTML 22 Feb 2024
Selection guide Logic Guide (Rev. AC) PDF | HTML 13 Nov 2025
Application note Implications of Slow or Floating CMOS Inputs (Rev. E) 26 Jul 2021
Selection guide Little Logic Guide 2018 (Rev. G) 06 Jul 2018
Application note How to Select Little Logic (Rev. A) 26 Jul 2016
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 02 Dec 2015
More literature Automotive Logic Devices Brochure 27 Aug 2014
User guide LOGIC Pocket Data Book (Rev. B) 16 Jan 2007
Product overview Design Summary for WCSP Little Logic (Rev. B) 04 Nov 2004
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
Application note Selecting the Right Level Translation Solution (Rev. A) 22 Jun 2004
Application note Advanced High-Speed CMOS (AHC) Logic Family (Rev. C) 02 Dec 2002
Application note Texas Instruments Little Logic Application Report 01 Nov 2002
Application note TI IBIS File Creation, Validation, and Distribution Processes 29 Aug 2002
Design guide AHC/AHCT Designer's Guide February 2000 (Rev. D) 24 Feb 2000
Product overview Military Advanced High-Speed CMOS Logic (AHC/AHCT) (Rev. C) 01 Apr 1998
Application note Migration From 3.3-V To 2.5-V Power Supplies For Logic Devices 01 Dec 1997
Application note Bus-Interface Devices With Output-Damping Resistors Or Reduced-Drive Outputs (Rev. A) 01 Aug 1997
Application note CMOS Power Consumption and CPD Calculation (Rev. B) 01 Jun 1997
Application note Live Insertion 01 Oct 1996

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

14-24-LOGIC-EVM — Logic product generic evaluation module for 14-pin to 24-pin D, DB, DGV, DW, DYY, NS and PW packages

The 14-24-LOGIC-EVM evaluation module (EVM) is designed to support any logic device that is in a 14-pin to 24-pin D, DW, DB, NS, PW, DYY or DGV package,

User guide: PDF | HTML
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Simulation model

SN74AHCT126 Behavioral SPICE Model

SCLM255.ZIP (7 KB) - PSpice Model
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Package Pins CAD symbols, footprints & 3D models
SOIC (D) 14 Ultra Librarian
TSSOP (PW) 14 Ultra Librarian
WQFN (BQA) 14 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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