DDR SRAMs

GSI's SigmaDDR SRAMs are the acknowledged leader in the industry with their combination of capacity and performance. SigmaDDR transaction rates are unequaled by any competitors.


SigmaDDR SRAMs are synchronous memories with a common read and write data bus. “DDR” refers to their ability to transfer 2 beats of data on the data bus in a single clock cycle. SigmaDDR memories are ideal for applications that alternate between read and write operations infrequently, at operating speeds of 250 MHz and above.


GSI’s SigmaDDR devices are compatible with all competitor Double Data Rate SRAMs.

 

Name Density Config. Speed (MHz) Burst Length Read Latency (RL) On Die Termination Package 6/6 ROHS Temp Features Status
SigmaDDR-IVe
View 42 products
144Mb x18, x36 Up to 1333 2 6, 5 Weak/Strong/None 260 BGA yes Comm, Ind, Mil See Individual Products Production
SigmaDDR-IIIe
View 88 products
72Mb, 288Mb, 144Mb x18, x36 Up to 833 2 3, 2 Weak/Strong/None 260 BGA no, yes Mil, Comm, Ind See Individual Products Production
SigmaDDR-II+
View 1096 products
288Mb, 144Mb, 72Mb, 36Mb, 18Mb x18, x36, x8, x9 Up to 633 2 2.5, 2 Weak/None, Weak/Strong, n/a 165 BGA yes, no Comm, Ind See Individual Products Production, NRND
SigmaDDR-II
View 662 products
144Mb, 72Mb, 36Mb, 18Mb x8, x9, x18, x36 Up to 400 2, 4 1.5 n/a 165 BGA no, yes Mil, Comm, Ind See Individual Products Contact Sales, Production, NRND
SigmaSIO DDR-II
View 328 products
288Mb, 144Mb, 72Mb, 36Mb, 18Mb x18, x36, x8, x9 Up to 400 2 1.5 n/a 165 BGA no, yes Comm, Ind Production
Part Number Density Config. Speed (MHz) Burst Length Read Latency (RL) On-Die Termination Package 6/6 RoHS Temp Features Status
GS8342T18BGD-250 36Mb x18 250 2 1.5 n/a 165 BGA yes Comm Production
GS8342T18BGD-250I 36Mb x18 250 2 1.5 n/a 165 BGA yes Ind Production
GS8342T18BGD-300 36Mb x18 300 2 1.5 n/a 165 BGA yes Comm Production
GS8342T18BGD-300I 36Mb x18 300 2 1.5 n/a 165 BGA yes Ind Production
GS8342T18BGD-333 36Mb x18 333 2 1.5 n/a 165 BGA yes Comm Production
GS8342T18BGD-333I 36Mb x18 333 2 1.5 n/a 165 BGA yes Ind Production
GS8342T18BGD-400 36Mb x18 400 2 1.5 n/a 165 BGA yes Comm Production
GS8342T18BGD-400I 36Mb x18 400 2 1.5 n/a 165 BGA yes Ind Production
GS8342T36BGD-250 36Mb x36 250 2 1.5 n/a 165 BGA yes Comm Production
GS8342T36BGD-250I 36Mb x36 250 2 1.5 n/a 165 BGA yes Ind Production
GS8342T36BGD-300 36Mb x36 300 2 1.5 n/a 165 BGA yes Comm Production
GS8342T36BGD-300I 36Mb x36 300 2 1.5 n/a 165 BGA yes Ind Production
GS8342T36BGD-333 36Mb x36 333 2 1.5 n/a 165 BGA yes Comm Production
GS8342T36BGD-333I 36Mb x36 333 2 1.5 n/a 165 BGA yes Ind Production
GS8342T36BGD-400 36Mb x36 400 2 1.5 n/a 165 BGA yes Comm Production
GS8342T36BGD-400I 36Mb x36 400 2 1.5 n/a 165 BGA yes Ind Production

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