SN74AHCT139DGVR

Series:	74AHCT
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Decoder/Demultiplexer
Circuit:	1 x 2:4
Independent Circuits:	2
Current - Output High, Low:	8mA, 8mA
Voltage Supply Source:	Single Supply
Voltage - Supply:	4.5 V ~ 5.5 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	16-TFSOP (0.173", 4.40mm Width)
Supplier Device Package:	16-TVSOP
Base Part Number:	74AHCT139

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<p>The SN74AHCT139DGVR is a high-speed, low-power bidirectional logic chip with a typical propagation delay of only 11 ns. It is commonly used as a multiplexer, decoder, or signal switch due to its logic family and its ability to switch signals between devices. As a result, most applications that require high-speed logic switching and/or multiplexing have been applied to it.</p><p>The chip belongs to the set of "big-boy" digital logic ICs based on 74-series universal logic families, which can switch multiple input signals into one output in one application. The \'AHCT\' in its name stands for "advanced high speed CMOS logic", which evinces its speed and low power consumption. The SN74AHCT139DGVR has two 3-state outputs and four active-low inputs of which one (A1) is an enable input.</p><p>The SN74AHCT139DGVR chip\'s application field covers all of the areas where logic switching or multiplexing is required, such as when multiple signals need to be switched at high speed and low power. This chip is particularly useful when it comes to digital circuits, such as computers and general logic circuit applications, as well as increasingly popular applications in the embedded world, where switching signals at high speed with low power is a must.</p><p>The SN74AHCT139DGVR works using basic logic level shifters, i.e. when incoming signals need to be converted to other logic levels. In the most common application, the chip converts four active-low inputs to the current level logic circuit, then latches these four inputs and outputs the two 3-state outputs. However, its application field does not remain confined to this. For example, it can be used to generate complementary outputs from an active-low input, demultiplex low-active data from an input, or providing independent power domains for multiplexer output channels. </p><p>The SN74AHCT139DGVR is unique due to its ability to switch signals with very low propagation delay, which makes it ideal for applications requiring high speed operation. This is a significant advantage over other competing devices, because at faster clock speeds they become more prone to errors and unstable operation. As a result, the chip has found its application fields in computers and digital logic circuits due to its higher speed, low power consumption and have found place in the embedded world.</p>

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