IDT74FCT162543AT

NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
2. All device terminals except FCT162XXX Output and I/O terminals.
3. Output and I/O terminals for FCT162XXX.

The IDT74FCT162543AT 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. Flowthrough organization of signal pins simplifies layout. All inputs are designed with hysteresis for improved noise margin.

The IDT74FCT162543AT has balanced output drive with current limiting resistors. This offers low ground bounce, minimal undershoot, and controlled output fall timesreducing the need for external series terminating resistors. The FCT162543T is a plug-in replacement for the FCT16543T and 54/74ABT16543 for on-board bus interface applications.