DESCRIPTION:

The IDT7099 is a high-speed 4K x 9 bit synchronous Dual Port RAM. The memory array is based on Dual-Port memory cells to allow simultaneous access from both ports. Registers on control, data, and address inputs provide low set-up and hold times. The timing latitude provided by this approach allow systems to be designed with very short realized cycle times. With an input data register, this device has been optimized for applications having unidirectional data flow or bi-directional data flow in bursts. Changing data direction from reading to writing normally requires one dead cycle.

FEATURES:

? High-speed clock-to-data output times

— Military: 20/25/30ns (max.)

— Commercial: 15/20/25ns (max.)

? Low-power operation

— IDT7099S

Active: 900 mW (typ.)

Standby: 50 mW (typ.)

? Architecture based on Dual-Port RAM cells

— Allows full simultaneous access from both ports

— Independent bit/byte Read and Write inputs for control functions

? Synchronous operation

— 4ns setup to clock, 1ns hold on all control, data, and address inputs

— Data input, address, and control registers

— Fast 15ns clock to data out

— 20ns cycle times, 50MHz operation

? Clock enable feature

? Guaranteed data output hold times

? Available in 68-pin PGA, 68-pin PLCC, and 80-pin TQFP

? Military product compliant to MIL-STD-883, Class B

? Industrial temperature range (–40°C to +85°C) is avail able, tested to military electrical specifications