CD74HC4515中文资料带输入锁存器的高速 CMOS 逻辑 4 至 16 线路解码器/多路解复用器数据手册TI规格书

描述 Description

The CD54HC4514, CD74HC4514, and CD74HC4515 are high-speed silicon gate devices consisting of a 4-bit strobed latch and a 4-to-16 line decoder. The selected output is enabled by a low on the enable input (E\\). A high on E\\ inhibits selection of any output. Demultiplexing is accomplished by using the E\\ input as the data input and the select inputs (A0-A3) as addresses. This E\\ input also serves as a chip select when these devices are cascaded.
When Latch Enable (LE\\) is high the output follows changes in the inputs (see truth table). When LE is low the output is isolated from changes in the input and remains at the level (high for the 4514, low for the 4515) it had before the latches were enabled. These devices, enhanced versions of the equivalent CMOS types, can drive 10 LSTTL loads.

特性 Features

• Multifunction Capability
• 1-to-16 Line Demultiplexer
• Bus Driver Outputs. . . . 15 LSTTL Loads
• Balanced Propagation Delay and Transition Times
• HC Types
• High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V

简介

CD74HC4515属于集成电路（IC）的信号开关多路复用器解码器。由TI制造生产的CD74HC4515信号开关，多路复用器，解码器逻辑型信号开关、多路复用器和编码器 IC 可用于对以数字格式表示数据的电信号进行路由和选择。这些器件与设计用于模拟信号的类似产品有所不同，它们保留的信息表示为两个电状态之一，而不是两个外部界限内的无穷变化量。