SN74HC573A中文资料具有三态输出的八路透明 D 型锁存器数据手册TI规格书

描述 Description

The SNx4HC573A devices are octal transparent D-type latches that feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.While the latch-enable (LE) input is high, the Q outputs respond to the data (D) inputs. When LE is low, the outputs are latched to retain the data that was set up.

特性 Features

• Wide Operating Voltage Range from 2 V to 6 V
• High-Current 3-State Outputs Drive Bus Lines Directly up to 15 LSTTL Loads
• Low Power Consumption: 80-µA Maximum ICC
• Typical tpd = 21 ns
• ±6-mA Output Drive at 5 V
• Low Input Current: 1 µA (Maximum)
• Bus-Structured Pinout

简介

SN74HC573A属于集成电路（IC）的锁存器。由TI制造生产的SN74HC573A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。