CD74ACT646M96

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CD74ACT646M96 is a high-speed logic device that provides an eight-bit parallel port with eight-bit I/O unit capability. The device is designed to operate from 3V to 5.5V single supply. It supports a variety of interfacing tasks such as bus transceivers, bus drivers, bus receivers and bus buffers. This device is capable of driving up to 10 mA at TTL-level outputs and up to 30 mA at High-Level CMOS outputs when operating near 5V. The device also enjoys various features such as low-skew clock design, open-drain/push-pull outputs, capacitive drive, high-speed operation and various input logic levels.

CD74ACT646M96 brings the logic-level conversion capability to the application field. It can convert bi-directionally between each I/O port. This is useful when there is a need to interface with different logic standards such as TTL, DTL, ECL and CMOS. This device has an input-threshold-level selection pins for some of its functions. Therefore, it can support different logic-level I/O levels (3V/5V). With its anti-fuse mask-programmed functions, it can be used as a configuration device to support various complex logic functions. Because of its bi-directional and configurable capability, it is suitable for many different applications.

CD74ACT646M96 also has wide-range of working principles. It can be used in static output (low-power) and dynamic output (high-speed) scenarios. Its static output mode works by controlling the data bus via open-drain outputs. Its open-drain outputs are enabled by different logic levels. The outputs will remain low when the output enable is low. The outputs will remain high when the output enable is high. Depending on the logic level of the output enable pin, the data lines will be tri-stated (Hi-Z) or driven by the appropriate logic level. When the static output mode is used in conjunction with clocking, the device is used for bus buffer/arbitration applications.

The dynamic mode of the device works by providing the data bus with capacitively-coupled, open-drain type drivers. It uses the positive edge of the clock signal to execute the transfers between its output buffers and respective data lines. The data lines are driven with the logic level available in the output buffer. When the clock signal is low, the outputs are tri-stated. Depending on the level of the output enable, the paths between the output and the data lines may be disabled, enabling the device to be used as transceivers, buffers and receivers.

In summary, CD74ACT646M96 is a versatile logic device suitable for a wide range of applications. With its bi-directional and configurable capabilities, it can be easily used for different logic-level interfacing tasks. It also supports both static and dynamic operations for application requirements such as bus buffers, transceivers, receivers, and drivers.

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