MC74VHCT574ADT集成电路（IC）的触发器规格书PDF中文资料

MC74VHCT574ADT属于集成电路（IC）的触发器。由安森美半导体公司制造生产的MC74VHCT574ADT触发器触发器是能够存储单个逻辑状态或信息“位”的基本数字存储器件。这些器件至少有两个输入；一个或多个用于传递要存储的数据，另一个用于指示存储该数据的时间点。不同的触发器类型，例如 D（延迟）、SR（置位复位）和 JK，对提供给其输入的信号有不同的响应，可用于实现不同的逻辑功能。这些器件与锁存器的不同之处在于它们是边缘敏感器件，其保持的逻辑状态仅在接收到有效时钟信号时才会改变。

Octal D−Type Flip−Flop with 3−State Output

The MC74VHCT574A is an advanced high speed CMOS octal flip−flop 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 flip−flop is controlled by a clock input and an output enable input. When the output enable input is high, the eight outputs are in a high impedance state.

The VHCT inputs are compatible with TTL levels. This device can be used as a level converter for interfacing 3.3 V to 5.0 V, because it has full 5.0 V CMOS level output swings.

The VHCT574A input and output (when disabled) structures provide protection when voltages between 0 V and 5.5 V are applied, regardless of the supply voltage. These input and output structures help prevent device destruction caused by supply voltage−input/output voltage mismatch, battery backup, hot insertion, etc.

Features

• High Speed: fmax = 140 MHz (Typ) at VCC = 5.0 V

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

• TTL−Compatible Inputs: VIL = 0.8 V; VIH = 2.0 V

• Power Down Protection Provided on Inputs and Outputs

• Balanced Propagation Delays

• Designed for 4.5 V to 5.5 V Operating Range

• Low Noise: VOLP = 1.6 V (Max)

• Pin and Function Compatible with Other Standard Logic Families

• Latchup Performance Exceeds 300 mA

• ESD Performance:

Human Body Model > 2000 V;

Machine Model > 200 V

• Chip Complexity: 286 FETs or 71.5 Equivalent Gates

• Pb−Free Packages are Available*