This is a 700MHz Dual-SPDT Switch IC from Vishay. It is an Analog Switch IC, meaning it is designed to control the electrical signal of an analog system. It is designed to operate in a temperature range of -40°C to +85°C, and has a power dissipation of 1000mW. It has a -3dB bandwidth of 700MHz, an off-leakage current of 1 ?A, a rise and fall time of 40ps, and a turn-on/off time of 5.6pF. It is a DG2723DN-T1-E4, which is a dual SPDT switch with a nominal capacitance of 18pF and a low channel resistance of 15 ohms. This makes it suitable for applications such as switching high-frequency signals for telecommunication, computers, and audio/video systems.