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DESCRIPTION:

The IDT72T7285/72T7295/72T72105/72T72115 are exceptionally deep, extremely high speed, CMOS First-In-First-Out (FIFO) memories with clocked read and write controls and a flexible Bus-Matching x72/x36/x18 data flow. These FIFOs offer several key user benefits:

? Flexible x72/x36/x18 Bus-Matching on both read and write ports

? A user selectable MARK location for retransmit

? User selectable I/O structure for HSTL or LVTTL

? Asynchronous/Synchronous translation on the read or write ports

? The first word data latency period, from the time the first word is written to an empty FIFO to the time it can be read, is fixed and short.

? High density offerings up to 9 Mbit

FEATURES:

? Choose among the following memory organizations:

IDT72T7285 ? 16,384 x 72

IDT72T7295 ? 32,768 x 72

IDT72T72105 ? 65,536 x 72

IDT72T72115 ? 131,072 x 72

? Up to 225 MHz Operation of Clocks

? User selectable HSTL/LVTTL Input and/or Output

? Read Enable & Read Clock Echo outputs aid high speed operation

? User selectable Asynchronous read and/or write port timing

? 2.5V LVTTL or 1.8V, 1.5V HSTL Port Selectable Input/Ouput voltage

? 3.3V Input tolerant

? Programmable Almost-Empty and Almost-Full flags, each flag can default to one of eight preselected offsets

? Program programmable flags by either serial or parallel means

? Selectable synchronous/asynchronous timing modes for Almost Empty and Almost-Full flags

? Separate SCLK input for Serial programming of flag offsets

? User selectable input and output port bus-sizing