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 Special 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 1160 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, Samples
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 348 products
288Mb, 144Mb, 72Mb, 36Mb, 18Mb x18, x36, x8, x9 Up to 400 2 1.5 n/a 165 BGA no, yes Comm, Ind See Individual Products Production, Samples
Part Number Density Config. Speed (MHz) Burst Length Read Latency (RL) On-Die Termination Package 6/6 RoHS Temp Special Features Status
GS81302TT37AGD-400 144Mb x36 400 2 2 Weak/Strong 165 BGA yes Comm none Samples
GS81302TT37AGD-400I 144Mb x36 400 2 2 Weak/Strong 165 BGA yes Ind none Samples
GS81302TT37AGD-450 144Mb x36 450 2 2 Weak/Strong 165 BGA yes Comm none Samples
GS81302TT37AGD-450I 144Mb x36 450 2 2 Weak/Strong 165 BGA yes Ind none Samples
GS81302TT20AGD-450 144Mb x18 450 2 2.5 Weak/Strong 165 BGA yes Comm none Samples
GS81302TT20AGD-450I 144Mb x18 450 2 2.5 Weak/Strong 165 BGA yes Ind none Samples
GS81302TT20AGD-500 144Mb x18 500 2 2.5 Weak/Strong 165 BGA yes Comm none Samples
GS81302TT20AGD-500I 144Mb x18 500 2 2.5 Weak/Strong 165 BGA yes Ind none Samples
GS81302TT20AGD-550 144Mb x18 550 2 2.5 Weak/Strong 165 BGA yes Comm none Samples
GS81302TT20AGD-550I 144Mb x18 550 2 2.5 Weak/Strong 165 BGA yes Ind none Samples
GS81302TT20AGD-633 144Mb x18 633 2 2.5 Weak/Strong 165 BGA yes Comm none Samples
GS81302TT20AGD-633I 144Mb x18 633 2 2.5 Weak/Strong 165 BGA yes Ind none Samples
GS81302TT38AGD-450 144Mb x36 450 2 2.5 Weak/Strong 165 BGA yes Comm none Samples
GS81302TT38AGD-450I 144Mb x36 450 2 2.5 Weak/Strong 165 BGA yes Ind none Samples
GS81302TT38AGD-500 144Mb x36 500 2 2.5 Weak/Strong 165 BGA yes Comm none Samples
GS81302TT38AGD-500I 144Mb x36 500 2 2.5 Weak/Strong 165 BGA yes Ind none Samples
GS81302TT38AGD-550 144Mb x36 550 2 2.5 Weak/Strong 165 BGA yes Comm none Samples
GS81302TT38AGD-550I 144Mb x36 550 2 2.5 Weak/Strong 165 BGA yes Ind none Samples
GS81302TT38AGD-633 144Mb x36 633 2 2.5 Weak/Strong 165 BGA yes Comm none Samples
GS81302TT38AGD-633I 144Mb x36 633 2 2.5 Weak/Strong 165 BGA yes Ind none Samples

Pages