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Texas Instruments TLC556MDR — Clock & Timing ICs

TLC556MDR Texas Instruments Dual 555 Timer, 2.1 MHz, 14-SOIC

MPNTLC556MDR
End of Life

Texas Instruments LinCMOS™ TLC556MDR 555 Type, Timer/Oscillator (Dual), 2.1 MHz, 720 µA, 5V ~ 18V, -55°C ~ 125°C, 14-SOIC.

$2.22Ref. price · indicative, final on quote
Texas Instruments TLC556MDR datasheet (PDF)
Packaging14-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
SeriesLinCMOS™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TLC556MDR specifications
ParameterValue
Type555 Type, Timer/Oscillator (Dual)
SeriesLinCMOS™
MountingSurface Mount
Supply voltage5V ~ 18V
Current - supply720 µA
Frequency2.1MHz
Operating temperature-55°C ~ 125°C
PackageTape & Reel (TR); Cut Tape (CT)
Case14-SOIC (0.154\", 3.90mm Width)

Product details

Dual 555 timer in 14-SOIC — 2.1 MHz, 720 µA supply

The Texas Instruments TLC556MDR is a dual 555-type timer/oscillator in the LinCMOS™ series, combining two independent timing circuits in a single 14-SOIC package. It delivers a maximum oscillation frequency of 2.1 MHz while drawing only 720 µA typical supply current — roughly one-tenth the quiescent draw of a bipolar 555, which matters for battery-powered or thermally constrained boards.

The TLC556MDR operates from 5 V to 18 V, covering 5 V logic rails, 12 V industrial supplies, and 15 V analog bias lines without an external regulator.

Surface-mount assembly and compliance

Housed in a 14-SOIC (0.154" width, 3.90 mm body) with supplier device package 14-SOIC, the TLC556MDR mounts directly to standard SOIC-14 land patterns.

Frequently asked questions

What is the TLC556MDR's supply current compared to a standard bipolar 555 timer?

The TLC556MDR draws 720 µA typical supply current, which is roughly an order of magnitude lower than the 10–15 mA quiescent current of a standard bipolar 555. This makes it suitable for low-power and portable designs where every milliamp counts.

Is TLC556MDR RoHS compliant and lead-free?

Yes, the TLC556MDR is ROHS3 Compliant, meaning it meets the EU RoHS directive without exemptions for lead, mercury, cadmium, or other restricted substances. It is suitable for lead-free reflow soldering processes.

What is the maximum operating frequency of the TLC556MDR?

The TLC556MDR has a maximum oscillation frequency of 2.1 MHz. This sets the upper bound for astable multivibrator or pulse-width modulation applications; the actual achievable frequency depends on the external RC timing components and their tolerances.