1 Features
• Fast astable frequency of 3MHz
• Available in industry's smallest 8-bump DSBGA
package (1.43mm × 1.41mm)
• Less than 1mW typical power dissipation at 5V
supply
• 1.5V specified supply operating voltage
• output fully compatible with TTL and CMOS logic
at 5V supply
• Tested to −10mA, 50mA 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 SOIC, VSSSOP, and PDIP
packages, the LMC555 is also available in a chipsized,
8-bump DSBGA package 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 astable
mode, the oscillation frequency and duty cycle are
accurately set by two external resistors and one
capacitor. TI's LMCMOS process extends both the
frequency range and the low supply capability.