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.
Diodes Inc. MMBT3904-7-F is a NPN BJT transistor for switching applications. Features include VCEsat of 0.3V, hFE of 30, and IC of 0.2A. With a max operating temp of 150°C, it's ideal for small outline SMT designs in automotive electronics.
TCA6424ARGJR by Texas Instruments is a CMOS parallel I/O port with 24 bits and 3 ports. It operates b/w -40 to 85°C, suitable for industrial applications. With a max clock frequency of 0.4 MHz, it offers low power consumption at only 0.03 mA supply current.