CD4043B中文资料具有三态输出的 CMOS 四路或非 R/S 锁存器数据手册TI规格书

描述 Description

CD4043B types 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. The Q outputs are controlled by a common ENABLE input. A logic \"1\" or high on the ENABLE input connects the latch states to the Q outputs. A logic \"0\" or low on the ENABLE input disconnects the latch states from the Q outputs, resulting in an open circuit condition on the Q outputs. The open circuit feature allows common busing of the outputs.
The CD4043B and CD4044B types are supplied in 16-lead hermetic dual-in-line ceramic packages (F3A suffix), 16-lead dual-in-line plastic packages (E suffix), 16-lead small-outline package (D, DR, DT, DWR, and NSR suffixes), and 16-lead thin shrink small-outline packages (PW and PWR suffixes).

特性 Features

• 3-state outputs with common output ENABLE
• NOR and NAND configurations
• Standardized symmetrical output characteristics
• Maximum input current of 1 µA at 18 V over full package temperature range; 100 nA at 18 V and 25°C
• 2 V at VDD = 10 V
• Meets all requirements of JEDEC Tentative Standard No. 13B, \"Standard Specifications for Description of 'B' Series CMOS Devices\"
• Four bits of independent storage with output ENABLE
• General digital logic
• CD4044B for negative logic systems
Data sheet acquired from Harris Semiconductor

简介

CD4043B属于集成电路（IC）的锁存器。由TI制造生产的CD4043B锁存器锁存器是类似于触发器的基本数字存储设备，但是不同之处在于，在锁存使能（或类似命名）信号处于有效逻辑状态的任何时间，保持的逻辑状态都可以改变。“透明”锁存器还允许设备输出在锁存使能信号有效时反映输入的当前状态，而相反的是，状态仅在保持状态已固定时改变。