Texas Instruments SN74HCT374DWR

Flip Flop D-Type Bus Interface Pos-Edge 3-ST 1-Element 20-Pin SOIC T/R
Flip Flop Logic IC; Logic Type:Flip-Flop; Logic Family:HCT; Logic Base Number:74374; Frequency Max:40MHz; Supply Voltage Min:4.5V; Supply Voltage Max:5.5V; Termination Type:SMD; Package/Case:20-SOIC; No. of Pins:20 ;RoHS Compliant: Yes
These 8-bit flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. The eight flip-flops of the ’HCT374 devices are edge-triggered D-type flip-flops. On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels that were set up at the data (D) inputs. An output-enable (OE) input places 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 pullup 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.