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Texas Instruments CD4049UBDT — Analog & Data Acquisition

CD4049UBDT 4000B Inverter, 6-ch, 3V-18V, 16-SOIC

MPNCD4049UBDT
End of Life

Texas Instruments 4000B series CMOS hex inverter, CD4049UBDT, 6 circuits, single input per gate, 3V to 18V supply, 4 µA quiescent, 4.3 mA source / 24 mA sink output, 50 ns propagation delay at 15V/50pF, -55°C to 125°C, 16-SOIC package.

$1.19Ref. price · indicative, final on quote
Texas Instruments CD4049UBDT datasheet (PDF)
Packaging16-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Series4000B
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

CD4049UBDT specifications
ParameterValue
Series4000B
Logic typeInverter
MountingSurface Mount
Supply voltage3V ~ 18V
Current - quiescent4 µA
Current - output high, low4.3mA, 24mA
I/O channels1
Operating temperature-55°C ~ 125°C
PackageTape & Reel (TR); Cut Tape (CT)
Case16-SOIC (0.154\", 3.90mm Width)
Number of circuits6
Input logic level - low1V ~ 2.5V
Input logic level - high4V ~ 12.5V
Max propagation delay @ v, max CL50ns @ 15V, 50pF

Product details

Six inverters in a single 16-SOIC — the CD4049UBDT from the 4000B family

The CD4049UBDT is a Texas Instruments 4000B-series CMOS hex inverter. It packs six independent inverter gates into a 16-SOIC surface-mount package, each with a single input. Quiescent current maxes at 4 µA, so it adds negligible draw in always-on sections.

Each output can source 4.3 mA and sink 24 mA. Propagation delay is 50 ns at 15V with a 50 pF load.

The 4000B series is well-known for latch-up immunity and noise margin at high supply voltages, which is why it persists in legacy avionics and defence BOMs.

Supplied in a 16-SOIC (0.154" body width, 3.90 mm) — the standard small-outline footprint for this logic density. Cut Tape (CT) is also listed for prototype or low-volume builds. No exposed pad; standard SOIC reflow profile applies.

Frequently asked questions

What is the pinout of CD4049UBDT?

Design engineers need to verify connectivity and footprint compatibility before PCB layout.

Is CD4049UBDT obsolete or active?

Sourcing and procurement teams require lifecycle status to avoid supply chain disruptions.

What is the supply voltage range for CD4049UBDT?

Engineers must ensure the part operates within the system's power rail specifications.

Where can I buy CD4049UBDT and what is the lead time?

Buyers need to know availability and delivery schedule to fill BOM lines on time.

What is the price of CD4049UBDT per unit?

Cost comparison is critical for sourcing decisions and budget planning.

What is a direct replacement for CD4049UBDT if it is not available?

Maintenance technicians and brokers need a cross-reference to keep systems running or manage inventory.