CD74HC138ME4

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CD74HC138ME4 is a type of logic circuit that makes use of signal switches, multiplexers, and decoders. Basically, it is a decoder/demultiplexer that is designed for 2-to-4 line decoding or multiplexing. It is provided in the form of an 8-pin surface mount package. The CD74HC138ME4 is typically used for high-speed switching operations.

The CD74HC138ME4 has two basic inputs for two select lines (A and B) and four outputs. It works on the principle of enabling output lines on the basis of the combination of input control signals - A and B. Depending on the combination of A and B, the CD74HC138ME4 can enable either one or more output lines simultaneously. Additionally, the CD74HC138ME4 also has a strobe line to select the desired output lines.

CD74HC138ME4 is suitable for use in digital systems requiring high-speed decoding and multiplexing. It is commonly found in applications that involve high-speed memory memory mapping, graphics controllers, core logic, systems control, and other operations requiring fast switching between two or more lines. The device can also be used for routing data signals for video, audio, and radio broadcast applications. Additionally, CD74HC138ME4 is often used in applications requiring data bus expansion.

CD74HC138ME4 is a CMOS logic device that is designed for use in very low power applications. It has a low operating voltage range from 1.65 to 5.5 volts and high noise immunity. The device is designed for high-speed switching and can operate up to 30 megahertz (MHz) using an power consumption of just 10 microamps (µA) maximum. It also has logic compatibility with all other TTL systems.

The CD74HC138ME4 also feature an active low output enable (OE) bar which is used to disable input points. This OE is used to control the input state of the device by allowing high-impedance operation. In contrast, CD74HC138ME4 features an active-high output enable (OE) pin that is used to disable output points. This OE is used to control the output state of the device by allowing low-impedance operation.

CD74HC138ME4 is a versatile device that can be used for a variety of application. It is commonly used in environments where high-speed decoding and multiplexing is required, as well as applications needing data bus expansion and routing signals for video, audio, and radio broadcast applications. Its CMOS-logic design provides high noise immunity, low power, and logic compatibility with other TTL systems.

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