CD74ACT139 - 双路 2 至 4 线路解码器/多路解复用器

CD74ACT139是TI德州仪器公司的一款解码器/编码器/多路复用器产品，CD74ACT139是双路 2 至 4 线路解码器/多路解复用器，本站介绍了CD74ACT139的封装应用图解、特点和优点、功能等，并给出了与CD74ACT139相关的TI元器件型号供参考。

CD74ACT139 - 双路 2 至 4 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 ’ACT139 devices are dual 2-line to 4-line decoders/demultiplexers designed for 4.5-V to 5.5-V VCC operation. These devices are designed to be used in high-performance memory-decoding or data-routing applications requiring very short propagation delay times. In high-performance memory systems, these decoders can be used to minimize the effects of system decoding. When used with high-speed memories utilizing a fast enable circuit, the delay times of these decoders and the enable time of the memory usually are less than the typical access time of the memory. This means that the effective system delay introduced by the decoders is negligible.

The active-low enable (G)\ input can be used as a data line in demultiplexing applications. These decoders/demultiplexers feature fully buffered inputs, each of which represents only one normalized load to its driving circuit.

产品特性

AC Types Feature 1.5-V to 5.5-V Operation and Balanced Noise Immunity at 30% of the Supply Voltage
Buffered Inputs
Incorporate Two Enable Inputs to Simplify Cascading and/or Data Reception
Speed of Bipolar F, AS, and S, With Significantly Reduced Power Consumption
Balanced Propagation Delays
±24-mA Output Drive Current
- Fanout to 15 F Devices
SCR-Latchup-Resistant CMOS Process and Circuit Design
Exceeds 2-kV ESD Protection Per MIL-STD-883, Method 3015

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