MC14556BFEL

Series:	4000B
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Decoder/Demultiplexer
Circuit:	1 x 2:4
Independent Circuits:	2
Current - Output High, Low:	8.8mA, 8.8mA
Voltage Supply Source:	Dual Supply
Voltage - Supply:	3 V ~ 18 V
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	16-SOIC (0.209", 5.30mm Width)
Supplier Device Package:	16-SOEIAJ
Base Part Number:	4556

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MC14556BFEL Application Field and Working PrincipleLogic - signal switches, multiplexers and decoders have an important role in digital systems. The MC14556BFEL from Motorola is one of the logic - signal devices used to switch signals between the digital inputs and outputs of the system. In this article, we will discuss about the application fields of the MC14556BFEL and its working principle.Application Field of the MC14556BFELThe MC14556BFEL is a single 8-bit wide latch/ buffer/ shifter with three-state output bus enabled. This device is suitable for use in digital data buses, such as bus-oriented systems, as well as in control systems. The device with its eight bits can latch eight data bits of information, or can select one of eight bits input data to be output on the buffered output.The major applications of the MC14556BFEL are in the following fields:

• Computer Memory Systems: The MC14556BFEL can be used in computer memory systems, such as ROMs, RAMs, disks and flash memories. It can be used to control the read and write signals, access and address decoding.
• Industrial Electronic Systems: The device is also used in industrial electronic systems for data sharing, selection and digital signal isolators.
• Audio/Video Systems: The MC14556BFEL can also be used in digital audio/video systems as a digital isolator for signal sharing, signal selection, signal latching and bus control.
• Consumer Electronic Systems: The device can also be used in consumer electronic systems for digital signal selectors, buffered signal isolators and for signal latching.

Working Principle of the MC14556BFELThe MC14556BFEL is an 8-bit latch/buffer/shifter with three-state output bus enabled. This device accepts eight bits of input data, which can be latched or outputted depending on the control inputs. The device consists of two major parts: the input buffer and the output buffer. The input buffer is used to temporarily store the data bits inputted to the device. The output buffer is used to output the selected data bits.The MC14556BFEL operates in the following manner: The data bits are first inputted to the device\'s input buffer. Then the device\'s control inputs (select, reset and enable) are enabled to control the device\'s operation. The select input is used to select the data bits to be outputted from the device\'s output buffer. The output bits are then selected and outputted from the device\'s output buffer.The MC14556BFEL has three-state outputs, allowing one device to talk to multiple devices. This feature enables it to be used in bus-oriented systems, where different devices need to be able to send and receive data. The device can also be used as latches or multiplexers. It can latch data bits and select one of several input data bits to be outputted.In conclusion, the MC14556BFEL is a single 8-bit wide latch/ buffer/ shifter with three-state output bus enabled. It is suitable for use in digital data buses, such as bus-oriented systems as well as in control systems. The major application fields of the device are in computer memory systems, industrial electronic systems, audio/video systems and consumer electronic systems. The device has two main parts, an input buffer and output buffer, and it operates by first inputting data to the input buffer, followed by setting the control inputs and selecting the output data bits from the output buffer.

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