16-Bit Latched TransceiverThe IDT74FCT16543T 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. By Integrated Device Technology
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