SN74AS250ADWR

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The SN74AS250ADWR logic device is an octal transceiver with 3-state output designed for signaling in synchronized systems or in high-speed bi-directional data-bus applications. It is developed by Texas Instruments, and it is a product within the digital signal processing family. The product is used in a variety of applications, mainly focused on signal switching, multiplexing, decoding, and other related processes in digital systems.

The SN74AS250ADWR is a low power consumption device that provides excellent switching performance. It is capable of logic level conversion between TTL and CMOS power levels, and can drive up to 15mA of current. It is suitable for line switching, multiplexing and logic level conversions up to a frequency of 10 MHz. The device has a low power consumption of typically 0.5uA, and is available in 8-pin PDIP packages.

The SN74AS250ADWR has two devices with non-inverting and inverting inputs, and both devices can be enabled or disabled using the two Enable pins. The Enable A enable pin (EAn) enables the device with non-inverting inputs whereas the Enable B enable pin (EBn) enables the device with inverting inputs.

The device also includes 8 data input lines (D0-D7), where the data applied on the input of the device is latched by the respective input mode. Each data input is then transferred to its respective output data bus only when its enable input (EAn or EBn) is at logic high state (1). All output enable pins are configured as active low, which can be used to enable or disable both devices at the same time.

When disabled, the low power consumption allows the device to remain inactive even at high frequencies. When enabled, the device delivers high performance and its fast switching enables excellent data throughput. The SN74AS250ADWR has a wide voltage range of 2.0 to 7.0 V, so it is suitable for applications operating at both low and high voltage levels.

In terms of its working principle, the SN74AS250ADWR acts as a digital combination switch, largely in charge of controlling the flow of signals into and out of a system. It performs this function by comparing a set of inputs to stored values, establishing which values are to be passed through the device to other circuits. This process is achieved by comparing current inputs to conditions referenced either in external registers (which contain stored data values) or in internal programmable logic arrays (PLAs). Depending on the set of inputs, the PLA or register will decide if the signal should be passed through to the other circuits.

The SN74AS250ADWR uses an octal transceiver design that supports both 3-state and switching functionality, making it suitable for many applications where logic levels and bi-directional communication are required. As it is a low power device, it is especially popular for battery operated applications such as portable consumer electronics where space and power consumption is an important consideration.

In summary, the SN74AS250ADWR is a low power, octal transceiver with 3-state output designed for powering a variety of applications that require signal switching, multiplexing and decoding. It is a very versatile device, capable of signaling in synchronized systems, bi-directional data-bus applications and performing logic-level conversions. It has a low power consumption and is capable of switching up to 10MHz, making it a great choice for battery operated consumer electronics devices.

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