SN74HC640N

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SN74HC640N is a high-performance CMOS logic integrated circuit. It belongs to the family of Logic-Buffers, Drivers, Receivers, Transceivers and is manufactured by Texas Instruments.

SN74HC640N is a 8-bit inverting buffer, a logic bus transceiver with tri-state outputs. It can be used in both high-frequency (up to 50 Mhz) and low-voltage applications, making it a preferred integrated circuit for designers due to its versatility.

The circuit includes 8 internally connected inverters which are used to control the data bits. The circuit also includes 8 tri-state outputs which can be used to trivially transmit or receive data from several parallel-linked devices. The SN74HC640N has a TTL compatible trigger input and data output, allowing better interfacing with the TTL logic, without the need for additional logic.

The SN74HC640N features a power down mode which is activated when the power down input is high. In this mode the integrated circuit acts as an enable for all outputs, ensuring that no power is consumed when the output is disabled. In addition, the outputs are tristated when the power down pin is high and the input is active.

The main application fields of the SN74HC640N come from the capability to transmit and receive data from other integrated circuits. It can be used in ADC and DAC interfaces, as well as video8 video, LED and S-video signals. It is also used in customer displays, clock data recovery circuits, as well as in analog, digital and wireless communications.

The working principle of the SN74HC640N is quite simple. It receives and transmits data using two four-bit data lines, one of which is the data output lines and the other is the data input lines. Data is transmitted when the data input pin is low and the data output pin is high. When data is received, the data input pin is high and the data output pin is low. The data output pin also goes low when the circuit is powered down. When the power is on, the 8 data output pins can be individually enabled or disabled.

In addition, the SN74HC640N also includes a 4-bit Address Input port to determine the level of data to be sent or received. In order to send data, the address bits need to be set to the source address of the data. To receive data, the address bits need to be set to the destination address of the data.

In conclusion, the SN74HC640N is a versatile logic-buffer that can be used in a wide range of applications. It can be used to transmit or receive data from other integrated circuits, and is also capable of controlling data output pins. Its power down pin ensures that no power is consumed when the output is disabled. Its 4-bit address pin makes it an ideal choice for customer displays and other video data transmission applications.

This integrated circuit is an important tool for embedded application designers and has become a cornerstone in data communications. The SN74HC640N has become an indispensable component for designers that require a reliable, versatile, and compact device.

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