NE555DR SOIC 8Pin PRECISION TIMERS
DS1307 SOIC 8Pin 64 x 8, Serial, I2C Real-Time Clock
IN1307DT SOIC 8PIN CMOS IC of real time watch with serial interface,64 Х 8 RAM
IN1307N DIP/TH 8PIN CMOS IC of real time watch with serial interface,64 Х 8 RAM
NE555DT SOIC 8Pin General-purpose single bipolar timers
HEF4541BT SOIC 14Pin Programmable timer
DS1307+ DIP/TH 8PIN 64 x 8, Serial, I2C Real-Time Clock
LM556CMX SOIC 8Pin Dual Timer
NE556DT SOIC 14PIN GENERAL PURPOSE DUAL BIPOLAR TIMERS