CD74HC4514 - 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

CD74HC4514是TI德州仪器公司的一款解码器/编码器/多路复用器产品，CD74HC4514是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，本站介绍了CD74HC4514的封装应用图解、特点和优点、功能等，并给出了与CD74HC4514相关的TI元器件型号供参考。

CD74HC4514 - 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 - 解码器/编码器/多路复用器 - 特殊逻辑 - 德州仪器

产品描述

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.

产品特性

Multifunction Capability
- Binary to 1-of-16 Decoder
- 1-to-16 Line Demultiplexer
Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . 15 LSTTL Loads
Wide Operating Temperature Range . . . -55°C to 125°C
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

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