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Texas Instruments SN74HC05N — Discrete Semiconductors

SN74HC05N Hex Inverter, Open Drain, 14-DIP – TI 74HC Series

MPNSN74HC05N
End of Life

Texas Instruments 74HC series, SN74HC05N, hex inverter with open-drain outputs, 6 circuits, 1 input per circuit, 2V to 6V supply, through-hole 14-DIP (0.300", 7.62mm), -40°C to 85°C, 5.2mA sink current, 20ns propagation delay at 6V/50pF.

$0.6Ref. price · indicative, final on quote
Texas Instruments SN74HC05N datasheet (PDF)
Packaging14-DIP (0.300", 7.62mm)
RoHSROHS3 Compliant
Series74HC
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74HC05N specifications
ParameterValue
Series74HC
Logic typeInverter
MountingThrough Hole
Supply voltage2V ~ 6V
Current - quiescent2 µA
Current - output high, low-, 5.2mA
I/O channels1
Operating temperature-40°C ~ 85°C
PackageTube
FeaturesOpen Drain
Case14-DIP (0.300\", 7.62mm)
Number of circuits6
Input logic level - low0.5V ~ 1.8V
Input logic level - high1.5V ~ 4.2V
Max propagation delay @ v, max CL20ns @ 6V, 50pF

Product details

The SN74HC05N is a hex inverter with open-drain outputs. Supply range is 2V to 6V. Quiescent current is 2 µA max. Propagation delay is 20 ns at 6V with a 50 pF load.

Open-drain output current — the 5.2 mA sink limit

The output low current is 5.2 mA per channel. That's the maximum sink current when the output is pulled low. For an LED indicator, that's plenty with a series resistor. For driving a relay coil or an optocoupler LED, check the load current — if it exceeds 5.2 mA, you'll need a transistor buffer or a higher-drive part like the SN74HCU04PWT (same inverter function, same 5.2 mA sink, but push-pull outputs instead of open-drain). The open-drain version trades push-pull speed for wired-OR flexibility.

Active production, ROHS3, and sourcing

It's ROHS3 compliant, so it passes EU RoHS and most medical-device material restrictions without an exemption.

Frequently asked questions

Is SN74HC05N RoHS compliant?

Yes, the SN74HC05N is ROHS3 compliant, meeting EU RoHS requirements without exemptions.

What are the alternatives to SN74HC05N?

The closest functional alternative is the SN74HCU04PWT, which is also a hex inverter but with push-pull outputs instead of open-drain. The SN74HCU04PWT is surface-mount (TSSOP) and has a slightly faster 14 ns propagation delay at 6V/50pF. For a through-hole open-drain inverter, the SN74HC05N is the standard choice.

Is SN74HC05N compatible with 3.3V logic?

Yes, the SN74HC05N operates from 2V to 6V, so it works directly with 3.3V logic. The open-drain output lets you pull up to a different voltage (e.g., 5V) for level shifting.