SCBS066A - JUNE 1990 - REVISED NOVEMBER 1993
This 8-bit flip-flop features 3-state outputs designedspecifically for driving highly capacitive or relativelylow-impedance loads. It is particularly suitable for implementingbuffer registers, I/O ports, bidirectional bus drivers, and workingregisters.
The eight flip-flops of the SN64BCT374 are edge-triggered D-typeflip-flops. On the positive transition of the clock (CLK) input, theQ outputs are set to the logic levels that were set up at the data(D) inputs.
A buffered output-enable (
) input can be used to place the eight outputs in eithera normal logic state (high or low logic levels) or a high-impedancestate. In the high-impedance state, the outputs neither load nordrive the bus lines significantly. The high-impedance impedance stateand increased drive provide the capability to drive bus lines withoutneed for interface or pullup components.
The output-enable ()does not affect the internal operations of the flip-flops. Old datacan be retained or new data can be entered while the outputs are inthe high-impedance state.
The outputs are in a high-impedance state during power up andpower down when the supply voltage is less than approximately 3 V.
The SN64BCT374 is characterized for operation from -40°C to85°C and 0°C to 70°C.
View more information about generic part numbers:SN64BCT374
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