Best-Selling IC Chips

1. 555 Timers Chip
The 555 timer chip is a timing integrated circuit, as one of the most popular IC chip. And the 555 timing interval  uses an external RC (resistor/capacitor) network to vary the timing duration. And this IC chip is used in a variety of osciallator, delay, timer and pulse generation applications.

2. LM741 IC and LM324 op-amps
An op-amp circuit is a special type of amplifier IC chip. And the most common op-amp integrated circuits are LM324 and LM741 op-amps circuits. And the LM324 op-amp has 4 separate integrated circuits in a single 14-pin DIP package. However, LM741 IC is a single op-amp circuit in a 8-pin package.