资 源 简 介
This 20-bit bus-interface flip-flop is designed for 1.65-V to 3.6-V VCC operaTIon.
The SN74ALVCH16821 can be used as two 10-bit flip-flops or one 20-bit flip-flop. The 20 flip-flops are edge-triggered D-type flip-flops. On the posiTIve transiTIon of the clock (CLK) input, the device provides true data at the Q outputs.
A buffered output-enable (OE) input can be used to place the ten 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 need for interface or pullup components.
OE does not affect the internal operaTIon of the flip-flops.
