CD74AC158M

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CD74AC158M is a 16-bit high-speed CMOS multiplexer/demultiplexer. It is meant for the use in high-speed memory applications and fast address multiplexing. Its inputs include A0 - A7, S0 - S1 and E, where S0 and S1 control the multiplexing of A0 - A7 and E gates the four least significant selector outputs. It operates from a single power supply ranging from 3V to15V.

CD74AC158M is composed of four 4-bit multiplexer/demultiplexer components. The first multiplexer/demultiplexer has two data inputs and two select inputs. The other three multiplexers/demultiplexers have a shared pair of select inputs. All the four multiplexers/demultiplexers have their individual enable inputs. This enables or disables the entire multiplexer/demultiplexer package. All the four enable inputs need be asserted (at logic high) for the multiplexers/demultiplexers to function correctly.

Working Principle

CD74AC158M multiplexers are controlled by the control inputs, S0 - S1 and E. The S0 and S1 inputs determine the selection of the demultiplexers. When S0 and S1 inputs are “Low”, the multiplexer is “OFF”. For the multiplexers to be “ON”, S0 and S1 inputs should be “High”. When enabled, the multiplexers behave like a single 4-bit multiplexer with inputs E, A0 - A1, B0 - B3, and outputs Y0 - Y3.

The E inputs control the data transmission in the multiplexers. When E is “Low”, the data is transmitted from A0 - A3 to Y0 - Y3. When E is “High”, the data is transmitted from B0 - B3 to Y0 - Y3.

Application Field

CD74AC158M\'s fast switching speed makes it suitable for use in high-speed memory applications. Its compact size, low cost and high performance makes it the most suitable and widely used multiplexer/demultiplexer of its kind. It can be used in fast address multiplexing, where a maximum of 8 inputs can be access with only two selector inputs.

CD74AC158M can also be used in digital processing of video signals, and to implement demultiplexing in data conversion systems, bus interface and microprocessor-based systems. The fast switching speed of the multiplexer allows it to be used in high-end digital systems, where multiplexing and demultiplexing functions must be performed without any significant delay.

CD74AC158M is also used in digital systems to switch, filter, cross-connect and multiplex multiple signals. It is widely used in systems where signals from several sources need to be multiplexed on one bus. It is also used as a switch to perform bus routing between different circuit blocks.

CD74AC158M\'s highly reliable selective switching, high speed and low power consumption makes it a popular choice for various applications. Its ability to withstand high temperature and wide range of operating voltages makes it the ideal choice for many different applications.

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