datasheet/TL/index.html
TL072, TL072A - TL072B LOW NOISE J-FET DUAL OPERATIONAL AMPLIFIERS
TL071, TL071A, TL071B, TL072 TL072A, TL072B, TL074, TL074A, TL074B LOW-NOISE JFET-INPUT OPERATIONAL AMPLIFIERS
TL431, TL431A ADJUSTABLE PRECISION SHUNT REGULATORS