SN74ALS640B-1N

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The SN74ALS640B-1N is a high-speed TTL-compatible logic family device that is useful for a wide range of applications in logic-based systems. It is an advanced, multi-channel, three-state buffer and driver with a common bus interface. This device is used in applications such as digital system data bus buffering, clock distribution and bi-directional data transceivers. It has a low-power, low-current design with a maximum operating voltage of 5-volts and a minimum logic low level of 0.8-volts.

Logic - Buffers, Drivers, Receivers, Transceivers

The SN74ALS640B-1N is ideal for buffering data, clock and address busses, driving address lines and bus transceivers. It is most commonly used as an interface between memory components and controller devices to improve system performance. SN74ALS640B-1N can also be used as a level translator between high and low speed buses, regulating the flow of data. With 13-outputs it is perfect for driving loads such as LED displays and switching/controlling multiple outputs simultaneously.

Working Principle

The SN74ALS640B-1N has a positive logic input structure and uses a voltage translation logic structure when a logic low level is input. Its outputs are three-state, either enabled and low, enabled and high or disabled and tri-stated, and can thus be used in various logic circuits. When an output is enabled, its signal is low when logic zero is input, and high when logic one is input. When an output is disabled, its signal is in an indeterminate state and should not drive any loads.

The SN74ALS640B-1N has three separate buses for data, address and clock inputs and outputs. Data inputs and outputs can be connected directly to other data busses without external buffering. The address bus drivers provide active-high outputs for device switching, which can be used for decoding. Data on the clock bus is vertically inverted before being driven, allowing for low-power clock distribution.

The SN74ALS640B-1N is used in a variety of applications, from clock distribution and bus buffering to data transceivers, due to its logical and efficient design. This device is excellent for data throughput, consumes low power and provides high-speed buffering and signal generation. It is a perfect interface between devices, making the transfer of data smooth and reliable. Whether driving multiple LEDs or providing address decoding, the SN74ALS640B-1N is an ideal choice for logic-based systems.

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