Skip to main content
Log in
Texas Instruments SN74AC14D — Signal Isolation

SN74AC14D 74AC Hex Schmitt-Trigger Inverter, 10ns @ 5V

MPNSN74AC14D
End of Life

Texas Instruments 74AC series, SN74AC14D, hex Schmitt-trigger inverter, 6 circuits, 1 input per circuit, 2V–6V supply, 24mA output drive, 10ns propagation delay at 5V/50pF, -40°C to 85°C, 14-SOIC package.

$1.16Ref. price · indicative, final on quote
Texas Instruments SN74AC14D datasheet (PDF)
Packaging14-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Series74AC
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74AC14D specifications
ParameterValue
Series74AC
Logic typeInverter
MountingSurface Mount
Voltage2V ~ 6V
Current - quiescent2 µA
Current - output high, low24mA, 24mA
I/O channels1
Operating temperature-40°C ~ 85°C
PackageTube
FeaturesSchmitt Trigger
Case14-SOIC (0.154\", 3.90mm Width)
Number of circuits6
Input logic level - low0.5V ~ 1.1V
Input logic level - high2.2V ~ 3.9V
Max propagation delay @ v, max CL10ns @ 5V, 50pF

Product details

Six Schmitt-trigger inverters in a 14-SOIC — what that means on the bench

The SN74AC14D: Six independent inverter gates with Schmitt-trigger inputs in a 14-SOIC package. Supply range 2V to 6V; outputs sink or source 24 mA each.

10 ns at 5V — does the timing close?

Max propagation delay 10 ns at 5V, 50 pF. The 74AC family is faster than the 74HC equivalent (14 ns at 6V for SN74HCU04PWT).

Active production — no LTB worry

No last-time-buy notice, no end-of-life announcement.

Mounting and environment

Surface-mount in a 14-SOIC (3.90 mm body width) — standard footprint, no exotic pad geometry. Quiescent current is 2 µA max, so it adds negligible draw to a battery-powered rail.

Frequently asked questions

Is SN74AC14D compatible with 5V logic?

Yes, the 2V to 6V supply range includes 5V. The input logic levels (low 0.5V–1.1V, high 2.2V–3.9V) and 24 mA output drive are well within 5V logic thresholds.

Can SN74AC14D replace 74HC14D?

The SN74AC14D is a functional replacement for a 74HC14D hex Schmitt-trigger inverter in the same 14-SOIC footprint. The AC version is faster (10 ns vs ~14 ns propagation delay at 5V) and offers the same 24 mA output drive. Check the input logic level thresholds — the AC family has tighter hysteresis — but in most designs it drops in without a board change.