LM555 Timer datasheet (Rev. D) - Texas Instruments

LMC555 CMOS Timer 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 ...

TLC555 LinCMOS™ Technology Timer 1 Features • Very low power consumption: – 1-mW typical at VDD = 5 V • Capable of operation in astable mode • CMOS output capable of swinging rail to rail • High output current capability – Sink: 100-mA typical – Source: 10-mA typical • Output fully compatible with CMOS, TTL, and MOS

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 chip-sized, 8-bump DSBGA package using TI’s DSBGA package technology.

Each timer has a trigger level equal to approximately one-third of the supply voltage and a threshold level equal to approximately two-thirds of the supply voltage. These levels can be altered by use of the control voltage pin (CONT). When the trigger input (TRIG) is less than the trigger level, the flip-flop is set and the output goes high.

xx555 Precision Timers datasheet (Rev - Texas Instruments

LM555 Timer 1 Features 3 Description The LM555 is a highly stable device for generating 1• Direct Replacement for SE555/NE555 accurate time delays or oscillation. Additional • Timing from Microseconds through Hours terminals are provided for triggering or resetting if • Operates in Both Astable and Monostable Modes desired.

Each timer has a trigger level equal to approximately one-third of the supply voltage and a threshold level equal to approximately two-thirds of the supply voltage. These levels can be altered by use of the control voltage pin (CONT). When the trigger input (TRIG) is less than the trigger level, the flip-flop is set and the output goes high.

This spreadsheet calculates the complete design of a TLC555 timer-based astable circuit given the timing capacitance, on time, and desired duty cycle. Resistor values are calculated to the nearest 1% value.

TI’s SE555 is a Precision timer for -55 to 125C operation. Find parameters, ordering and quality information