The CD4043B IC's are quad cross-coupled 3-state CMOS NOR latches and the CD4044B types are quad cross-coupled 3-state CMOS NAND latches. Each latch has a separate Q output and individual SET and RESET inputs.

Features of CD4043 Quad NOR R-S Latch Tri-state:

• 3-state outputs with common output ENABLE.
• Separate SET and RESET inputs for each latch.
• NOR and NAND configurations.
• 5-V, 10-V, and 15-V parametric ratings.
• Standardized symmetrical output characteristics.
• 100% tested for quiescent current at 20 V.
• Maximum input current of 1 µA at 18 V over full package temperature range; 100 nA at 18 V and 25°C.

Applications of CD4043 Quad NOR R-S Latch Tri-state:

• Holding register in multi-register system.
• Four bits of independent storage with output ENABLE.
• Strobed register.
• General digital logic.
• CD4043B for positive logic systems.
• CD4044B for negative logic systems.