LMC555

LMC555 CMOS Timer LMC555 SNAS558N – JANUARY 2000 – REVISED MARCH 2024 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...