DS18B20 by Maxim Integrated is a 12-bit digital temperature sensor with 1-Wire interface. It operates b/w -55 to 125°C, with ±0.5°C accuracy. Commonly used in applications requiring precise temperature monitoring like HVAC systems and industrial automation.
NE555D by Texas Instruments is an 8-terminal IC with a supply voltage range of 4.5V to 16V, suitable for analog waveform generation applications. It operates at temperatures from 0°C to 70°C and has a max supply current of 15mA. The package style is small outline, making it ideal for compact electronic designs.