This component is a balance of supply and demand and is an alternative part to DS4420N+T&R, FAN7023M_NL, and LM4894ITPX. It can be found on the manufacturer's homepage at www.national.com. The LM48556TLX is a high-performance audio subsystem with an integrated ground-referenced stereo headphone amplifier. It features a fully differential stereo input with a common mode rejection ratio of > 60 dB, a power supply range of 2.7V to 5.5V, and a low shutdown current of 0.1 uA. It is perfect for portable audio applications.