This post explains for the Analog Switch.
The Part Number is DG302.
The function of this semiconductor is CMOS Analog Switch.
Manufacturer: Maxim
Description
The DG302 is TTL Compatible CMOS Analog Switch.
A CMOS (Complementary Metal-Oxide-Semiconductor) analog switch, also known as a CMOS analog multiplexer or CMOS analog multiplexing switch, is an integrated circuit (IC) component that is commonly used in electronic systems to route analog signals selectively. It allows multiple analog input signals to be connected to a single output or vice versa, much like a mechanical switch but in an electronic form.
Maxim’s DG300-DG303 and DG300A-DG303A CMOS dual and quad analog switches combine low power operation with fast switching times and superior DC and AC switch chracteristics. On resistance is less than 50Ω and is essentially constant over the analog signal range. Device specifications are ideal for battery powered circuitry.
Features
1. Monolithic Low Power CMOS
2. Latch-Up proof construction
3. Fully compatible 2nd source
4. Fast switching time
Ordering Information:
Applications:
1. Portable Instruments
2. Low power sample/holds
3. Power supply switching
4. Process control and telemetry
Other data sheets are available within the file:
DG302CJ, DG302CWE, DG302CK, DG302BWE, DG302BK, DG302AK
DG302 IGBT Reference Page : https://www.datasheetcafe.com/dg302-datasheet-300v-igbt/