IDT74ALVCH16276

This 12-bit synchronous bus exchanger is built using dual metal CMOS technology. The ALVCH16276 device is a high-speed, bidirectional, 12-bit, registered, bus multiplexer for use in synchronous memory interleaving applications.

All registers have a common clock and use a clock enable (CExxx) on each data register to control data sequencing. The output enables and mux select (OEA, OEB and SEL) are also under synchronous control allowing direction changes to be edge triggered events.

The ALVCH16276 has three 12-bit ports. Data may be transferred between the A port and either/both of the B ports. The clock enable (CE1B, CE2B, CEA1B and CEA2B) inputs control data storage. Both B ports have a common output enable (OEB) to aid in synchronously loading the B registers from the B port.

The ALVCH16276 has been designed with a ±24mA output driver. This driver is capable of driving a moderate to heavy load while maintaining speed performance. The ALVCH16276 has "bus-hold" which retains the inputs' last state whenever the input goes to a high impedance. This prevents floating inputs and eliminates the need for pull-up/down resistors.