SN74BCT652NT

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   SN74BCT652NT is a kind of non-inverting octal bus transceiver with two separate-input-enable circuits. It can be used for buffering data buses in a variety of applications. The device is organized as two 8-bit transceivers and is characterized for operation from 0 °C to 70 °C. SN74BCT652NT is a part of SN74BCT family products, which are designed for high-performance fiber-optic data transmission application.

   SN74BCT652NT falls into the category of Logic- Buffers, Drivers, Receivers, Transceivers. Logic- Buffers, Drivers, Receivers, Transceivers includes buffers, multiplexers, transceivers, bus transceivers, and signal switch. All those components convert, multiplex, and buffer signal information, or are used to isolate, propagate, or switch signal information. Buffers are generic devices used to isolate two circuits, propagate signal information, and to drive loads. Multiplexers are devices used primarily to switch signal information between two or more sources. Transceivers convert multiplexed signal information into parallel-to-serial and serial-to-parallel formats tailored to specific needs. Bus transceivers are special devices designed to interface serial data or multiplexed signal information to most common buses. And finally, signal switches are special devices used to switch signal information from one source to multiple outputs.

   SN74BCT652NT\'s application field includes driving lower-capacitance loads, generation-and reception -ofgates signals. Its greater speed compared to bipolar TTL and high-output drive makes it suitable for these high-performance applications. SN74BCT652NT is particularly useful when driving highly capacitive loads, like cable drivers, line drivers, and multiple loads for systems that are required for over-the-air transmitters and receivers. Other applications that are using SN74BCT652NT are desktop printer controllers, broadcast controllers, system backplanes, and STARLAN interfaces.

   SN74BCT652NT works according to two separate input-enable circuits, A and B. The two enable inputs allow data transmission from both A and B buses in two directions simultaneously without contention. Any A- or B-side buffer can provide either transmit or receive capability, depending on the logic level applied to its corresponding enable input. The active-low OEs (output enables) on each side can override data outputs, when low, and can provide the additional feature of bus-hold operation.

  The data should become valid within the specified time after receiving the enable pulse. When data transfer from the A-bus to the B-bus is desired, A-bus data should be loaded, the A-side enable (A-G) should be taken low and kept low while the B-side enable (B-G) should be taken low and held there long enough to transfer the data. The data should remain valid on the B-side outputs until the B-side enable (B-G) is taken high. The B-bus data is retained as long as the A-side enable (A-G) is low. When data transfer from B-bus to the A-bus is desired, A-side enable (A-G) should be taken low and held there long enough to transfer the data from the B-bus to the A-bus. The data should remain valid on the A-side outputs until the A-side enable (A-G) is taken high. The A-bus data is retained as long as the B-side enable (B-G) is low.

   The device SN74BCT652NT is designed with a separate Input Enable (G) and Output Enable (OE) to allow control of input and output potentials independently. Two active-low Output Enable inputs (OEs) can be used to place the outputs in the high-impedance state for multiple-bus applications. Each G input must be low for the corresponding buffer to communicate data between buses, and the OE inputs must be high.

   SN74BCT652NT provides buffers with high-current drive capability and a wide operating range. It is a high-speed octal bus transceiver with separate A/B-side enable inputs that make it useful for driving cable drivers, line drivers, multiple loads and over-the-air transmitters and receivers. With its wide operating temperature range, high-output drive, and fast speeds, SN74BCT652NT is a good choice for high-performance application fields.

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