74LVX16373TTR

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74LVX16373TTR is a 3.3V dual non-inverting bus switch which is categorized as a logic latch. It is a 16-bit device that offers two sets of eight cross-coupled CMOS switches which can each be controlled by individual signal-select inputs. This allows a mutual connection of two buses to be made in one signal-select cycle.

Typically, the 74LVX16373TTR is used to connect the output buffer of one device to the input buffer of another with minimal external logic circuitry. It enables data transmission, data reception, and address decoding and switching between multiple buses, making it ideal for system designs and fault-tolerant sharing of bus resources. It is also used to reduce external component count and simplify board layout.

To better understand the usage and operation of the 74LVX16373TTR, let’s look at its internal design and working principle.

Working Principle of 74LVX16373TTR

The 74LVX16373TTR is composed of two sets of eight independent cross-coupled CMOS switches, each of which is connected between bus and bus / select lines A (A1–A8, respectively) and B (B1–B8, respectively), as shown in the figure below.

Each switch can be independently controlled by its respective BUF input. The switches are non-inverting, and the state of the outputs will be the same as their corresponding inputs (A or B). When BUF is set to logic 1, the corresponding switch is turned on, connecting the buses and transferring data. When BUF is set to logic 0, the corresponding switch is turned off, disconnecting the buses.

For example, if BUF1 is set to logic 1, switch A1 is turned on, connecting A1 and B1, while the other switches remain off. This allows data transmission between the two buses.

The 74LVX16373TTR also features two enable pins, ENA and ENB, which control the entire device. When ENA is set to logic 1 and ENB is set to logic 0, all the switches controlled by the BUF inputs are turned on. When ENA is set to logic 0, all the switches are turned off. When ENB is set to logic 1, the switches controlled by the BUF inputs are turned off, and the switches controlled by the bus line A signals are turned on. This allows data reception from the bus A signals to the bus B signals.

Applications of 74LVX16373TTR

The 74LVX16373TTR can be used for a variety of applications, including data transmission and reception, address decoding and switching, as well as fault-tolerant sharing of buses. Here are some examples of where this device can be used:

• It can be used for high-speed data transmission and reception between multiple buses, such as the CPU bus, memory bus, and PCI bus.
• It can be used for address decoding, allowing data selection and switching on multiple buses.
• It can be used for fault-tolerant sharing of buses, ensuring that data is always transmitted between the buses even in the event of failure of one of the buses.

The 74LVX16373TTR is a versatile and reliable device. With its advanced features and internal design, it offers a wide range of applications in data transmission, address decoding, and fault-tolerant sharing of buses. It is a high-performance device, greatly reducing the complexity of board designs and the number of external components needed. The 74LVX16373TTR is a reliable and cost-effective choice for system designs.

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