74VHCT573A屬于集成電路（IC）的鎖存器。由安森美半導體公司制造生產的74VHCT573A鎖存器鎖存器是類似于觸發(fā)器的基本數(shù)字存儲設備，但是不同之處在于，在鎖存使能（或類似命名）信號處于有效邏輯狀態(tài)的任何時間，保持的邏輯狀態(tài)都可以改變。“透明”鎖存器還允許設備輸出在鎖存使能信號有效時反映輸入的當前狀態(tài)，而相反的是，狀態(tài)僅在保持狀態(tài)已固定時改變。

General Description

The VHCT573A is an advanced high speed CMOS octal latch with 3-STATE output fabricated with silicon gate CMOS technology. It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. This 8-bit D-type latch is controlled by a Latch Enable input (LE) and an Output Enable input (OE). When the OE input is HIGH, the eight outputs are in a high impedance state.

特性 Features

■ High speed: tPD = 7.7ns (Typ.) at TA = 25°C

■ High Noise Immunity: VIH = 2.0V, VIL = 0.8V

■ Power Down Protection is provided on all inputs and outputs

■ Low Noise: VOLP = 1.6V (Max.)

■ Low Power Dissipation: ICC = 4μA (Max.) @ TA = 25°C

■ Pin and function compatible with 74HCT573