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CD4043.pdf
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2008-04-02
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The CD4043BC are quad cross-couple 3-STATE CMOS
NOR latches, and the CD4044BC are quad cross-couple 3-
STATE CMOS NAND latches. Each latch has a separate Q
output and individual SET and RESET inputs. There is a
common 3-STATE ENABLE input for all four latches. A
logic “1” on the ENABLE input connects the latch states to
the Q outputs. A logic “0” on the ENABLE input disconnects
the latch states from the Q outputs resulting in an
open circuit condition on the Q output. The 3-STATE feature
allows common bussing of the outputs.
Features
Wide supply voltage range: 3V to 15V
Low power: 100 nW (typ.)
High noise immunity: 0.45 VDD (typ.)
Separate SET and RESET inputs for each latch
NOR and NAND configuration
3-STATE output with common output enable
Applications
• Multiple bus storage
• Strobed register
• Four bits of independent storage with output enable
• General digital logic
NOR latches, and the CD4044BC are quad cross-couple 3-
STATE CMOS NAND latches. Each latch has a separate Q
output and individual SET and RESET inputs. There is a
common 3-STATE ENABLE input for all four latches. A
logic “1” on the ENABLE input connects the latch states to
the Q outputs. A logic “0” on the ENABLE input disconnects
the latch states from the Q outputs resulting in an
open circuit condition on the Q output. The 3-STATE feature
allows common bussing of the outputs.
Features
Wide supply voltage range: 3V to 15V
Low power: 100 nW (typ.)
High noise immunity: 0.45 VDD (typ.)
Separate SET and RESET inputs for each latch
NOR and NAND configuration
3-STATE output with common output enable
Applications
• Multiple bus storage
• Strobed register
• Four bits of independent storage with output enable
• General digital logic
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