M74HC138TTR

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The M74HC138TTR is a type of logic-signal switch, multiplexers, and decoders made by NXP, a global leader in the semiconductor industry. The M74HC138TTR is a high-speed CMOS logic circuit that can be used to switch between 1-of-8 data signals and to encode 8-bit parallel inputs into three-state output signals.

The M74HC138TTR consists of 3 individual latch circuits, each with its own select line (A0-A2). Each latch circuit can be used to select one of eight input data bits, and to encode it into a three-state output signal. The A0-A2 select lines allow the user to select the appropriate latch circuit, while the OE line provides a “store” signal, which is used to store the data bit currently selected into the latch.

The M74HC138TTR also features an output-enable signal (OEn) which can be used to disable all output signals, as well as a power-on reset (POR) signal which is used to reset the state of the circuit after power-on.

The main application fields for the M74HC138TTR include multiplexers and decoders, as well as logic signal switching.

The most common application for multiplexers and decoders is in the control of buses, where the M74HC138TTR can be used to select a certain data bit from a group of data bits and encode it into a three-state output signal. The M74HC138TTR can also be used in logic signal switching applications, where it can be used to route or switch one logic signal to another, or to route multiple logic signals at once.

The operating principle of the M74HC138TTR is simple. When the A0-A2 select lines are enabled, the selected data input which corresponds to the enabled select line is stored into the latch. When the OE signal is enabled, the stored data is then encoded into a three-state output signal. The power-on reset signal is used to reset the state of the circuit upon power up.

The M74HC138TTR is an essential component for logic-signal switching, multiplexers, and decoders. This highly reliable and robust device has been used in many consumer electronics applications, where its high operating speed and low power consumption make it an ideal choice for applications that require frequent switching.

The specific data is subject to PDF, and the above content is for reference