MC74VHC573DT集成电路（IC）的锁存器规格书PDF中文资料

MC74VHC573DT属于集成电路（IC）的锁存器。由安森美半导体公司制造生产的MC74VHC573DT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。

The MC74VHC573 is an advanced high speed CMOS octal latch with 3−state output fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL while maintaining CMOS low power dissipation.

This 8−bit D−type latch is controlled by a latch enable input and an output enable input. When the output enable input is high, the eight outputs are in a high impedance state.

The internal circuit is composed of three stages, including a buffer output which provides high noise immunity and stable output. The inputs tolerate voltages up to 7V, allowing the interface of 5V systems to 3V systems.

• High Speed: tPD = 4.5ns (Typ) at VCC = 5V

• Low Power Dissipation: ICC = 4μA (Max) at TA = 25°C

• High Noise Immunity: VNIH = VNIL = 28 VCC

• Power Down Protection Provided on Inputs

• Balanced Propagation Delays

• Designed for 2V to 5.5V Operating Range

• Low Noise: VOLP = 1.2V (Max)

• Pin and Function Compatible with Other Standard Logic Families

• Latchup Performance Exceeds 300mA

• ESD Performance: HBM > 2000V; Machine Model > 200V

• Chip Complexity: 218 FETs or 54.5 Equivalent Gates

These devices are available in Pb−free package(s). Specifications herein

apply to both standard and Pb−free devices. Please see our website at

www.onsemi.com for specific Pb−free orderable part numbers, or

contact your local ON Semiconductor sales office or representative.