IDT74AUCR16245

This 16-bit bus transceiver is built using advanced CMOS technology.  The AUCR16245 is designed specifically for asynchronous communications be-tween data buses.  The control function implementation minimizes external timing requirements.

IDT74AUCR16245 can be used as one 16-bit transceiver or two 8-bit transceivers. It allows data transmission from A bus to B bus or from B bus to A bus, depending on the logic level at the direction-control (DIR) input.  The output-enable (OE) input can be used to disable the device so that the buses are effectively isolated.

IDT74AUCR16245 is fully specified for partial power-down applications using IOFF. The IOFF circuitry disables the outputs, preventing damaging current backflowthrough the device when it is powered down.

The AUCR16245 has series resistors in the device output structure which will reduce line noise when used with light loads.  This driver has been designedwith a ±4.5mA output driver at the designated threshold levels.

To ensure the high-impedance state during power up or power down, OE IDT74AUCR16245 should be tied to V_DD through a pull-up resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.