SN74ALS574B

具有三态输出的八路 D 类边沿触发器

These octal D-type edge-triggered flip-flops feature 3-state outputs designed specifically for bus driving. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

The eight flip-flops enter data on the low-to-high transition of the clock CLK input. The SN74ALS575A, SN54AS575, and SN74AS575 may be synchronously cleared by taking the clear input low.

The output-enable input does not affect internal operations of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

The SN54ALS574B, SN54AS574, and SN54AS575 are characterized for operation over the full military temperature range of -55°C to 125°C. The , SN74ALS575A, SN74AS574, and SN74AS575 are characterized for operation from 0°C to 70°C.

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3-State Buffer-Type Noninverting Outputs Drive Bus Lines Directly

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Bus-Structured Pinout

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Buffered Control Inputs

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SN74ALS575A and ´AS575 Have Synchronous Clear

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Package Options Include Plastic Small-Outline DW Packages, Ceramic Chip Carriers FK, Standard Plastic N, NT and Ceramic J, JT 300-mil DIPs, and Ceramic Flat W Packages