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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

LMC555

SNAS558M – FEBRUARY 2000 – REVISED JULY 2016

LMC555 CMOS Timer

1

1 Features

1

•

Industry's Fastest Astable Frequency of 3 MHz

•

Available in Industry's Smallest 8-Bump DSBGA

Package (1.43mm × 1.41mm)

•

Less Than 1 mW Typical Power Dissipation at 5 V

Supply

•

1.5 V Supply Operating Voltage Ensured

•

Output Fully Compatible With TTL and CMOS

Logic at 5 V Supply

•

Tested to

−10 mA, 50 mA Output Current Levels

•

Reduced Supply Current Spikes During Output

Transitions

•

Extremely Low Reset, Trigger, and Threshold

Currents

•

Excellent Temperature Stability

•

Pin-for-Pin Compatible With 555 Series of Timers

2 Applications

•

Precision Timing

•

Pulse Generation

•

Sequential Timing

•

Time Delay Generation

•

Pulse Width Modulation

•

Pulse Position Modulation

•

Linear Ramp Generators

3 Description

The LMC555 device is a CMOS version of the

industry standard 555 series general-purpose timers.

In addition to the standard package (SOIC, VSSSOP,

and PDIP) the LMC555 is also available in a chip-

sized package (8-bump DSBGA) using TI's DSBGA

package technology. The LMC555 offers the same

capability of generating accurate time delays and

frequencies as the LM555 but with much lower power

dissipation and supply current spikes. When operated

as a one-shot, the time delay is precisely controlled

by a single external resistor and capacitor. In the

astable mode the oscillation frequency and duty cycle

are accurately set by two external resistors and one

capacitor. The use of TI's LMCMOS process extends

both the frequency range and the low supply

capability.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LMC555

SOIC (8)

4.90 mm × 3.91 mm

VSSOP (8)

3.00 mm × 3.00 mm

PDIP (8)

9.81 mm × 6.35 mm

DSBGA (8)

1.43 mm × 1.41 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Pulse Width Modulator

Pulse Width Modulator Waveform:

Top Waveform - Modulation

Bottom Waveform - Output Voltage