555 timer ics texas instruments tlc556cn this texas instruments tlc556cn has a very low power consumption typically 2mw when vdd 5v it is capable of operation in astable mode the cmos output is capable of swinging rail to rail it has a high output current capability sinking 100ma and sourcing 10ma the output is fully compatible with cmos ttl and mos the low supply current reduces spikes during output transitions it uses a single supply from 2vdc to 15vdc it is pin compatible and f