CD74HC563E集成电路（IC）的锁存器规格书PDF中文资料

CD74HC563E属于集成电路（IC）的锁存器。由德州仪器制造生产的CD74HC563E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。

特性 Features

• Common Latch-Enable Control

• Common Three-State Output Enable Control

• Buffered Inputs

• Three-State Outputs

• Bus Line Driving Capacity

• Typical Propagation Delay = 13ns at VCC = 5V,

CL = 15pF, TA = 25oC (Data to Output)

• Fanout (Over Temperature Range)

- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads

- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

• Wide Operating Temperature Range . . . -55oC to 125oC

• Balanced Propagation Delay and Transition Times

• Significant Power Reduction Compared to LSTTL

Logic ICs

• HC Types

- 2V to 6V Operation

- High Noise Immunity: NIL = 30%, NIH = 30% of VCC

at VCC = 5V

• HCT Types

- 4.5V to 5.5V Operation

- Direct LSTTL Input Logic Compatibility,

VIL= 0.8V (Max), VIH = 2V (Min)

- CMOS Input Compatibility, Il ≤ 1μA at VOL, VOH

描述 Description

The ’HC533, ’HCT533, ’HC563, and CD74HCT563 are

high-speed Octal Transparent Latches manufactured with

silicon gate CMOS technology. They possess the low power

consumption of standard CMOS integrated circuits, as well as

the ability to drive 15 LSTTL devices.

The outputs are transparent to the inputs when the latch

enable (LE) is high. When the latch enable (LE) goes low the

data is latched. The output enable (OE) controls the

three-state outputs. When the output enable (OE) is high the

outputs are in the high impedance state. The latch operation

is independent of the state of the output enable.

The ’HC533 and ’HCT533 are identical in function to the

’HC563 and CD74HCT563 but have different pinouts. The

’HC533 and ’HCT533 are similar to the ’HC373 and ’HCT373;

the latter are non-inverting types.