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Texas Instruments 74AHC1G125DCKRG4 — Interface & Transceivers

74AHC1G125DCKRG4 Buffer, Non-Inverting, 3-State, 2V-5.5V

MPN74AHC1G125DCKRG4
End of Life

Texas Instruments 74AHC1G125DCKRG4, Series 74AHC, Buffer Non-Inverting, 3-State, 1 Element, 1 Bit per Element, 8mA Output, SC-70-5, Surface Mount, -40°C to 125°C.

$0.3500Ref. price · indicative, final on quote
Texas Instruments 74AHC1G125DCKRG4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

74AHC1G125DCKRG4 specifications
ParameterValue
Series74AHC
Logic typeBuffer, Non-Inverting
Output type3-State
MountingSurface Mount
Supply voltage2V ~ 5.5V
Current - output high, low8mA, 8mA
Operating temperature-40°C~125°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case5-TSSOP, SC-70-5, SOT-353
Number of elements1
Number of bits per element1

Product details

What this single-gate buffer does on your board

The Texas Instruments 74AHC1G125DCKRG4 is a single-bit, non-inverting buffer with a 3-state output from the 74AHC high-speed CMOS family. It takes one input and drives one output with an active-low output enable (OE). When OE is high, the output goes high-impedance, letting multiple buffers share a bus without contention. Output drive is rated at 8 mA source and sink, enough for standard CMOS logic fan-out but not for driving a relay coil or LED directly.

No special cooling needed at the 8 mA output level, but the SC-70-5 package's thermal resistance means derating the output current above 85°C if you push continuous drive.

Frequently asked questions

What is the difference between 74AHC1G125 and 74LVC1G125?

The 74LVC1G125 operates down to 1.65 V and typically offers 5 V tolerant inputs, while the 74AHC1G125 starts at 2 V and lacks 5 V tolerant I/O. The LVC variant also has lower dynamic power at higher frequencies. For 3.3 V or 5 V-only rails without mixed-voltage interfaces, the AHC part is functionally equivalent and often priced lower.