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Texas Instruments CD74AC05E — Signal Isolation

CD74AC05E TI Inverter, Open-Drain, 14-DIP, -55 to 125°C

MPNCD74AC05E
End of Life

Texas Instruments 74AC series, Logic Type Inverter, Open Drain, 6 Circuits, 1 Input, 1.5V ~ 5.5V Supply, -55°C ~ 125°C, Through Hole, 14-DIP (0.300", 7.62mm), Tube.

$0.79Ref. price · indicative, final on quote
Texas Instruments CD74AC05E datasheet (PDF)
Packaging14-DIP (0.300", 7.62mm)
RoHSROHS3 Compliant
Series74AC
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

CD74AC05E specifications
ParameterValue
Series74AC
Logic typeInverter
MountingThrough Hole
Voltage1.5V ~ 5.5V
Current - quiescent4 µA
Current - output high, low-, 24mA
I/O channels1
Operating temperature-55°C ~ 125°C
PackageTube
FeaturesOpen Drain
Case14-DIP (0.300\", 7.62mm)
Number of circuits6
Input logic level - low0.3V ~ 1.65V
Input logic level - high1.2V ~ 3.85V
Max propagation delay @ v, max CL8.2ns @ 5V, 50pF

Product details

Six open-drain inverters in a DIP-14 — what that means on the bench

The CD74AC05E: The 74AC series is a high-speed CMOS family with propagation delay rated at 8.2 ns into 50 pF at 5 V. Quiescent current sits at 4 µA max, which keeps the power budget low in battery-backed or always-on sections.

Open-drain output — the feature that changes the wiring

Open-drain logic means the output transistor connects to ground when active and disconnects (high-impedance) when inactive. There is no internal pull-up to VCC.

Frequently asked questions

Does CD74AC05E have open drain outputs?

Yes. The CD74AC05E is a hex inverter with open-drain outputs. Each output can sink up to 24 mA but does not source current, which allows wired-OR connections and level translation.

Is CD74AC05E equivalent to 74HC05?

Both are hex inverters with open-drain outputs in a DIP-14 package, but the CD74AC05E is a 74AC-series part with faster propagation delay (8.2 ns at 5 V vs. roughly 13 ns for 74HC) and wider temperature range (-55°C to 125°C vs. -40°C to 85°C for standard 74HC). They are not exact equivalents; the 74AC version is higher speed and wider temperature.