IDT74FCT163543C

The FCT163543 16-bit latched transceivers are built using advanced dual metal CMOS technology. These high-speed, low-power devices are organized as two independent 8-bit D-type latched transceivers with separate input and output control to permit independent control of data flow in either direction. For example, the A-to-B Enable (xCEAB) must be low in order to enter data from the A port or to output data from the B port. xLEAB controls the latch function. When xLEAB is low, the latches are transparent. A subsequent low-to-high transition of xLEAB signal puts the A latches in the storage mode. xOEAB performs output enable function on the B port. Data flow from the B port to the A port is similar but requires using xCEBA, xLEBA, and xOEBA inputs. Flow-through organization of signal pins simplifies layout. All inputs are designed with hysteresis for improved noise margin.

The FCT163543 have series current limiting resistors. These offer low ground bounce, minimal undershoot, and controlled output fall times reducing the need for external series terminating resistors.