74F382

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The 74F382 is a dual register device in the F Series logic family from Fairchild semiconductor. This device is a specialized logic family that provides many custom functions, primarily targeted at incorporating comparator, multiplexor and decoding functions into a single logic package. The 74F382 can perform all of these functions while being more cost-effective and significantly less power-consuming than conventional ASCII and ECL devices.

Applications of the 74F382 include switching/multiplexing, programmable logic arrays, control systems, address switches and logic gates. In the latter case, the 74F382 is especially useful because it features two separate registers that can be used together or independently. This allows users to easily implement different logic functions depending on their requirements.

The 74F382 is an asynchronous dual register with individual data inputs, complement data outputs and independent clock inputs for each register. Each register has two clocking modes, transparent and level sensitive mode, which can be selected independently. The main purpose of the 74F382 is to facilitate the use of logic gates and logic functions without the need for multiple logic chips.

The transparent mode provides a logic function that is directly transparent to the data on the associated data inputs. For level sensitive clocking, a switch is used to set the level for the each of the inputs. In level sensitive mode, the data at the data inputs is ignored until the level at the clock input is changed. This allows for optimised performance in multiplexing and decoding applications.

The 74F382 is also useful in applications where logic levels must be switched quickly. With the two registers, it is possible to switch levels in half a clock cycle, allowing faster switching rates in critical applications. Furthermore, the 74F382\'s multiplexers and decoders can be used together to increase combinatoric logic performance.

The 74F382 also features 3-state outputs and a built-in pull-down resistor on each output, making it suitable for use in tristate operations. The pull-down resistors ensure that the output signals have an appropriate low impedance when in the output’s high-impedance state, thus enabling a much faster transition from high-to-low speeds in tristate operations. In addition, the 74F382 also features a totem-pole output stage, which can drive circuits with high accuracy in data transfer applications. By having both the pull-down resistors and the totem-pole output stage, the 74F382 is an effective and versatile choice for multiplexing and decoding operations.

In summary, the Fairchild 74F382 is a specialized logic family that provides many custom functions. Its two registers, along with its multiplexer and decoder functions, make it ideal for use in applications that require switching and multiplexing. Furthermore, its 3-state outputs and pull-down resistor enable it to be used in tristate operations. With its combination of features and functionality, the 74F382 is a cost-effective, low power alternative to conventional comparators, multiplexors and decoders.

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