SCLS245F - OCTOBER 1995 - REVISED AUGUST 1997
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The 'AHCT574 are octal edge-triggered D-type flip-flops that feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. These devices are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels of the data (D) inputs.
A buffered output-enable (OE\) input places the eight outputs in either a normal logic state (high or low) 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 the increased drive provide the capability to drive bus lines without interface or pullup components.
OE\ does not affect internal operations of the flip-flop. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.
The SN54AHCT574 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74AHCT574 is characterized for operation from -40°C to 85°C.
View more information about generic part numbers:SN54AHCT574, SN74AHCT574
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