BUY HA4741-5 https://www.utsource.net/itm/p/420133.html
Quad, 3.5MHz, Operational Amplifier
Description: HA4741-5 is a DIP (Dual In-line Package) integrated circuit (IC) manufactured by Hitachi. Features: Low power consumption High speed operation High noise immunity Low output impedance High reliability Applications: HA4741-5 is used in a variety of applications such as audio amplifiers, power supplies, motor control systems, and other industrial control systems. It can also be used in automotive applications. (For reference only)