The CD4013BT are consists of two identical, independent data-type flip-flops. Each flip-flop has independent data, set, reset, and clock inputs and Q and Q outputs IC SOP-14 Pins Package.
The CD4020BM, CD4020BE, are ripple-carry binary counters. All counter stages are master-slave flip-flops state of a counter advances one count on the negative transition of each input pulse a high level on the RESET line resets the counter to its all zero
The CD4021BM series types are supplied in 16-lead hermetic dual-in-line ceramic packages (D and F suffixes), 16-lead dual-in-line plastic packages (E suffix), and in chip form (H suffix).
The CD4027BM is a single monolithic chip integrated circuit containing two identical complementary-symmetry J-K master-slave flip-flops. Each flip-flop has provisions for individual J, K, Set, Reset, and Clock input signals.