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Texas Instruments NA555D — Clock & Timing ICs
Texas Instruments

NA555D 555 Timer, 100kHz, 8-SOIC, Industrial Temp

MPNNA555D
End of Life

Texas Instruments NA555D, 555 Type Timer/Oscillator (Single), 100kHz, 8-SOIC (0.154", 3.90mm Width), Surface Mount, 4.5V ~ 16V Supply, -40°C ~ 105°C, Active.

$0.95Ref. price · indicative, final on quote
NA555D datasheet
Packaging8-SOIC (0.154", 3.90mm Width)
StockContact for availability
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Specifications

NA555D Technical Specifications
ParameterValue
Type555 Type, Timer/Oscillator (Single)
Mounting typeSurface Mount
Voltage4.5V ~ 16V
Current - supply10 mA
Frequency100kHz
Operating temperature-40°C ~ 105°C
PackageTube
Case8-SOIC (0.154\", 3.90mm Width)

Product details

It runs off a 4.5V to 16V supply and delivers up to 100 kHz oscillation. It is the surface-mount sibling of the through-hole NE555P, sharing the same core timing architecture.

Supply range and timing margin

The 4.5V to 16V supply range matches the original bipolar 555, so it drops into existing designs without re-calculating timing resistors. At 10 mA supply current typical, the power budget is modest — fine for a 24V industrial rail or a 5V logic supply. The 100 kHz maximum frequency is the astable ceiling; for precision one-shots, the timing capacitor and resistor values follow the standard 555 equation, with the same 1% tolerance sensitivity as the through-hole version.

Package and footprint

The 8-SOIC (0.154", 3.90mm width) body is the standard narrow SOIC-8 footprint. It is a surface-mount device, so reflow soldering is the expected assembly method.

Frequently asked questions

What is the difference between NA555D and NE555D?

The NA555D and NE555D are both 555 timers in SOIC-8 from Texas Instruments. The NA555D also has a tighter supply-current spec. They are pin-compatible, so the NA555D can replace an NE555D in a design that needs the wider temperature margin.

Can NA555D replace a standard NE555P?

Yes, with a footprint change. The NE555P is a through-hole DIP-8; the NA555D is an 8-SOIC surface-mount device. Electrically they are the same 555 timer with the same supply range and timing equations, so the circuit works identically once the PCB layout is updated to the SOIC-8 footprint.