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Texas Instruments SN74S05N — Discrete Semiconductors
Texas Instruments

SN74S05N Hex Inverter, Open Collector, 14-DIP, 74S Series

MPNSN74S05N
End of Life

Texas Instruments 74S series, SN74S05N — hex inverter with open-collector outputs, 14-DIP (0.300") through-hole package, 4.75V–5.25V supply, 0°C to 70°C, 20mA sink per output, 7.5ns propagation delay at 5V/50pF.

$2.04Ref. price · indicative, final on quote
SN74S05N datasheet
Packaging14-DIP (0.300", 7.62mm)
StockContact for availability
MOQ1 pcs
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Specifications

SN74S05N Technical Specifications
ParameterValue
Series74S
Logic typeInverter
Mounting typeThrough Hole
Voltage4.75V ~ 5.25V
Current - output high, low-, 20mA
Number of inputs1
Operating temperature0°C ~ 70°C
PackageTube
FeaturesOpen Collector
Case14-DIP (0.300\", 7.62mm)
Number of circuits6
Input logic level - low0.8V
Input logic level - high2V
Max propagation delay @ v, max CL7.5ns @ 5V, 50pF

Product details

Six open-collector inverters in a 14-pin DIP — what that means for the board

The Texas Instruments SN74S05N packs six independent inverter gates with open-collector outputs into a single 14-pin DIP package. Each gate accepts one input and, because the output transistor collector is left uncommitted, you can pull it up to a different voltage than the supply rail — or wire multiple outputs together for a wired-OR configuration. The 20 mA sink rating per output gives enough drive for small relays, indicator LEDs, or pulling down a bus line. Supply sits at 5 V nominal (4.75 V to 5.25 V range), and the 74S Schottky family delivers a 7.5 ns propagation delay at 5 V with a 50 pF load — fast enough for moderate-speed glue logic but not as power-hungry as the 74F series.

Where it fits — and where it doesn't

The 0°C to 70°C commercial temperature range limits this part to indoor, temperature-controlled equipment. The through-hole 14-DIP package is board-rewire friendly for prototypes and legacy PCB layouts.

Lifecycle and sourcing

The SN74S05N carries an Active lifecycle status from Texas Instruments. The ROHS3 compliance covers the latest environmental directives.

Frequently asked questions

Is SN74S05N obsolete?

No — the SN74S05N is listed as Active in production. No end-of-life notification has been issued. It remains a current-production part from Texas Instruments.

SN74S05N vs SN74LS05N — what's the difference?

Both are hex open-collector inverters in the same pinout. The 74S version (SN74S05N) uses Schottky clamping for faster switching — 7.5 ns propagation delay at 5V/50pF — while the 74LS version is slower (about 15 ns) but draws less supply current. Choose 74S when timing margin is tight; choose 74LS for lower power in less speed-critical paths.

What is a functional equivalent for SN74S05N?

The SN74LS05N is a direct pin-compatible alternative in the 74LS family with the same six open-collector inverters. For a surface-mount footprint, the SN74ALS38BNSR is a quad 2-input NAND with open-collector outputs — different logic function but same open-drain capability. No single exact second-source exists; the best fit depends on your logic function and package requirements.