CD74AC646M

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CD74AC646M is an 8-bit non-inverting buffer or driver with 3-state outputs designed to provide higher-speed operation than the equivalent standard CMOS s--the Motorola MC74AC646. It uses TTL circuitry to achieve rapid switching. The outputs can be connected together to form an 8-bit data bus which is ideal for high frequency applications.

Typical applications include data handling systems, printer interfaces, system clock inputs, video line buffering, and memory address buffers. In addition, it is often used as part of a mixed-signal system as its output uses a ttl high-level output whereas the input level is 5V cmos/ttl.

The CD74AC646M consists of eight independent gates each containing an octal buffer. Each of these eight gates features an output enable (OE) input which can be used to turn its associated output on or off while blocking the transmission of signals. The OE can also be used to create higher-order logic functions such as AND and OR. Each gate also has an output which can be tied to another input to form a bus. This makes the CD74AC646M ideal for applications which require the transfer of large amounts of data.

The CD74AC646M utilizes advanced CMOS technology for low power consumption and superior noise immunity. It is also characterized for operation over the wide commercial temperature range from -20°C to +85°C.The CD74AC646M is available in several flexible packages such as SOIC, TSSOP, PDIP, PZIP, and PLCC.

The CD74AC646M uses a voltage level translation circuit ensures optimal signal level translation between cmos/ttl inputs and outputs. It also provides a wide bus driver output swing up to 7V. This makes the CD74AC646M suitable for driving high capacitive capacitive loads. The output also features a 3-state logic to quickly turn off the output when it is not in use, thereby preventing contention between multiple driver outputs.

The CD74AC646M is also available with an active-low enable input which provides a lower average power consumption. This helps save power when the device is in standby mode. It also helps reduce system interference when multiple drivers are used in a system.

The CD74AC646M is a popular choice for data communication, system clock, and memory arbitration. It is also useful for video line buffering and expanding TTL levels. Its high-speed switching makes it an ideal solution for applications requiring an octal buffer with wide bus driver and fast output switching, especially for high-frequency applications.

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