SN74HC574DW

TEXAS INSTRUMENTS  SN74HC574DW  触发器, 三态非反相, 正沿, D, 31 ns, 28 MHz, 7.8 mA, SOIC, 20 引脚

The is an octal edge-triggered D-type Flip-flop with 3-state outputs. It is 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. A buffered output-enable OE\\ input can be used to place the eight outputs in either a normal logic state high or low logic levels or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines without interface or pull-up components. OE\ does not affect the 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.

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High-current 3-state non-inverting outputs drive bus lines directly or up to 15 LSTTL loads

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Bus-structured pinout

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22ns Typical tpd

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80µA Maximum low power consumption

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±6mA Output drive at 5V

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1µA Maximum low input current

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Green product and no Sb/Br