Octal 3−State Noninverting Transparent Latch

High−Performance Silicon−Gate CMOS

The MC74HC573A is identical in pinout to the LS573. The devices are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs.

These latches appear transparent to data (i.e., the outputs change asynchronously) when Latch Enable is high. When Latch Enable goes low, data meeting the setup and hold time becomes latched.

The HC573A is identical in function to the HC373A but has the data inputs on the opposite side of the package from the outputs to facilitate PC board layout.

Features

• Output Drive Capability: 15 LSTTL Loads

• Outputs Directly Interface to CMOS, NMOS and TTL

• Operating Voltage Range: 2.0 to 6.0 V

• Low Input Current: 1.0 μA

• In Compliance with the JEDEC Standard No. 7.0 A Requirements

• Chip Complexity: 218 FETs or 54.5 Equivalent Gates

• Pb−Free Packages are Available*

MC74HC573ADTR2属于集成电路（IC） > 锁存器。安森美半导体公司制造生产的MC74HC573ADTR2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。