DESCRIPTION:

The IDT723622/723632/723642 is a monolithic, high-speed, low-power, CMOS Bidirectional SyncFIFO (clocked) memory which supports clock frequencies up to 67MHz and have read access times as fast as 11ns. Two independent 256/512/1024x36 dual-port SRAM FIFOs on board each chip buffer data in opposite directions.

FEATURES:

• Free-running CLKA and CLKB may be asynchronous or

coincident (simultaneous reading and writing of data on a

single clock edge is permitted)

• Two independent clocked FIFOs buffering data

in opposite directions

• Memory storage capacity:

IDT723622–256 x 36 x 2

IDT723632–512 x 36 x 2

IDT723642–1024 x 36 x 2

• Mailbox bypass register for each FIFO

• Programmable Almost-Full and Almost-Empty flags

• Microprocessor Interface Control Logic

• IRA, ORA, AEA, and AFA flags synchronized by CLKA

• IRB, ORB, AEB, and AFB flags synchronized by CLKB

• Supports clock frequencies up to 67MHz

• Fast access times of 11ns

• Available in 132-pin Plastic Quad Flatpack (PQF) or

space-saving 120-pin Thin Quad Flatpack (PF)

• Low-power 0.8-Micron Advanced CMOS technology

• Industrial temperature range (-40oC to +85oC) is

available, tested to military electrical specifications