SN74ALVC16721

This  SN74ALVC16721 20-bit flip-flop is designed specifically for low-voltage (3.3-V) VCC operation; it is tested at 2.5-V, 2.7-V, and 3.3-V VCC.

The SN74ALVC16721's 20 flip-flops are edgetriggered D-type flip-flops with qualified clock storage. On the positive transition of the clock (CLK) input, the device provides true data at the Q outputs if the clock-enable (CLKEN) input is low. If CLKEN is high, no data is stored.A buffered output-enable (OE) input places the 20 outputs in either a normal logic state (high or low level) or a 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 pullup components. OE does not affect the internal operation of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.Active bus-hold circuitry holds unused or floating data inputs at a valid logic level.

The SN74ALVC16721 is available in TI's shrink small-outline (DL) and thin shrink small-outline (DGG) packages, which provide twice the I/O pin count and functionality of standard small-outline packages in the same printed-circuit-board area.

The SN74ALVC16721 is characterized for operation from 40°C to 85°C.