HEF4557B - 1-to-64 bit variable length shift register SOP 16-Pin
IC SHIFT REGISTER 1-64BIT 16SOIC
HEF4555B - 1-of-4 decoder/demultiplexer SOP 16-Pin
2-to-4 Decoder/Demultiplexer IC, 2x1:4, CMOS, SOIC, 3-15V