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Texas Instruments CAHCT126QPWRG4Q1 — Logic ICs

CAHCT126QPWRG4Q1 Buffer, Non-Inverting, 3-State, 14-TSSOP

MPNCAHCT126QPWRG4Q1
End of Life

Texas Instruments Automotive, AEC-Q100, 74AHCT series, CAHCT126QPWRG4Q1, Buffer Non-Inverting, 3-State output, 4.5V to 5.5V supply, 8mA output drive, -40°C to 125°C, 14-TSSOP package.

$0.69Ref. price · indicative, final on quote
Packaging14-TSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
SeriesAutomotive, AEC-Q100, 74AHCT
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

CAHCT126QPWRG4Q1 specifications
ParameterValue
SeriesAutomotive, AEC-Q100, 74AHCT
Logic typeBuffer, Non-Inverting
Output type3-State
MountingSurface Mount
Supply voltage4.5V ~ 5.5V
Current - output high, low8mA, 8mA
Operating temperature-40°C ~ 125°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case14-TSSOP (0.173\", 4.40mm Width)
Number of elements4
Number of bits per element1

Product details

Buffer with 3-state outputs for 5V automotive bus isolation

Each of the four elements handles a single bit, with independent output-enable control per channel. The 3-state outputs let you isolate multiple bus nodes on the same line, which is the usual need in an automotive ECU where a sensor interface, a gateway, and a body controller share a data bus.

The 8 mA output drive (both high and low) is enough to fan out to four or five standard CMOS loads at 5 V, but if the downstream bus has a higher capacitive load or long trace, budget a buffer per signal group. The 3-state high-impedance state lets the output float, so multiple buffers can share a line without contention.

For a BOM that needs a 5 V bus buffer in an engine control unit or transmission controller, this is the grade to specify.

14-TSSOP footprint — board-level fit

The 0.65 mm pin pitch is standard for this family, and the package outline matches the industry-standard TSSOP-14 footprint. No special reflow profile beyond the usual lead-free solder process.

ROHS3 compliant.

Frequently asked questions

Is CAHCT126QPWRG4Q1 a direct replacement for SN74AHCT126?

Verify pinout and electrical compatibility against your specific SN74AHCT126 variant before substituting.