74HC147N,652

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The 74HC147N and 652 are logic ICs that falls into the Signal Switches, Multiplexers, and Decoders category. Both are commonly used logic devices used for a variety of applications, particularly for decoding and multiplexing. This article will discuss their application fields and provide an overview of their working principles.

The 74HC147N is a high speed 8 to 1 multiplexer device. It is an 8-input device with an additional three-state output buffer. It allows voltages up to 7V, and is capable of operating at high speeds with up to 1MHz of frequency. It is typically used in applications that require large amounts of data to be transferred quickly, such as encoding/decoding applications and bus arbitration.

The 652 is a 32-output random access memory (RAM) with a fairly standard cache. It contains two sets of addressable cells, one being a normal RAM and the other being used as a write buffer. This allows the 652 to receive data from one set of addresses, store it in the write buffer, and then output it in the output buffer. This makes the 652 particularly useful in applications that need to keep track of multiple addresses and store data for temporary use.

The working principle of both devices is fairly straightforward. The 74HC147N has eight input signals which can be switched onto its output. This is done by selecting the appropriate input signal with the MUX select inputs. When selected, the input signal will be output from the MUX output. The 652, on the other hand, works a bit differently, as it is a RAM device. When write data is received by the RAM, it is stored in the memory at the address location which has been previously set. When read data is called, the RAM will recall the data which is stored at that address and output it.

In conclusion, the 74HC147N and 652 are both useful, if quite different, logic ICs. 74HC147N is an 8 to 1 multiplexer and 652 is a 32-output RAM device. They both work similar in principal, with the 74HC147N switching input signals onto an output, and the 652 recalling data from a memory address and outputting it. Both are extremely useful devices for applications that require quick data transfer and strong memory management. Additionally, the 652 can be used for multiple address selection and write buffering.

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