The HCC4006B (extended temperature range) and the HCF4006B (standard temperature range), are monolithic integrated circuits, available in 14-lead dual in-line plastic or ceramic package and plastic micro package. The types are comprised of 4 separate "shift register" sections ; two sections of four stages and two sections of five stages with an output tap at the fourth stage. Each section has an independent "single rail" data path. A common clock signal is used for all stages. Data is shifted to the next stage on negative-going transitions of the clock. Through appropriate connections of inputs and outputs, multiple register sections of 4, 5, 8, and 9 stages or single register sections of 10, 12, 13, 14, 16, 17 and 18 can be implemented using one HCC/HCF4006B package. Longer shift register sections can be assembled by using more than one HCC/HCF4006B. To facilitate cascading stages when clock rise and fall times are slow, an optional output (D1 + 4') that is delayed one-half clock-cycle, is provided (see truth table for output from pin 2). June 1989