Touchstone's TS3004 vs. the CMOS 555: Which Delivers the Lowest Supply Current for Battery-Powered Applications?
The 555 timer is the workhorse of ICs, with close to a billion of them manufactured every year. Introduced in 1972, the 555 is still in widespread use because of its ease of use, reasonable price and good stability. But what if you need a timer IC for ultra-long life, low-frequency battery-powered/portable applications where a low supply current is a requirement? Is the CMOS555 timer your best option?