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 24 products
144Mb x18, x36 Up to 1333 2 6, 5 Weak/Strong/None 260 BGA yes Comm, Ind, Mil See Individual Products Production, Active
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, Active
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
GS81302TT37E-300 144Mb x36 300 2 2 Weak/Strong 165 BGA no Comm none Production
GS81302TT37E-450I 144Mb x36 450 2 2 Weak/Strong 165 BGA no Ind none Production
GS81302TT37E-400I 144Mb x36 400 2 2 Weak/Strong 165 BGA no Ind none Production
GS81302TT37E-350I 144Mb x36 350 2 2 Weak/Strong 165 BGA no Ind none Production
GS81302TT37E-333I 144Mb x36 333 2 2 Weak/Strong 165 BGA no Ind none Production
GS81302TT37E-300I 144Mb x36 300 2 2 Weak/Strong 165 BGA no Ind none Production
GS81302T07E-450 144Mb x8 450 2 2 Weak/Strong 165 BGA no Comm none Production
GS81302T07E-400 144Mb x8 400 2 2 Weak/Strong 165 BGA no Comm none Production
GS81302T07E-350 144Mb x8 350 2 2 Weak/Strong 165 BGA no Comm none Production
GS81302T07E-333 144Mb x8 333 2 2 Weak/Strong 165 BGA no Comm none Production
GS81302T07E-300 144Mb x8 300 2 2 Weak/Strong 165 BGA no Comm none Production
GS81302T07E-450I 144Mb x8 450 2 2 Weak/Strong 165 BGA no Ind none Production
GS81302T07E-400I 144Mb x8 400 2 2 Weak/Strong 165 BGA no Ind none Production
GS81302T07E-350I 144Mb x8 350 2 2 Weak/Strong 165 BGA no Ind none Production
GS81302T07E-333I 144Mb x8 333 2 2 Weak/Strong 165 BGA no Ind none Production
GS81302T07E-300I 144Mb x8 300 2 2 Weak/Strong 165 BGA no Ind none Production
GS81302T10E-450 144Mb x9 450 2 2 Weak/Strong 165 BGA no Comm none Production
GS81302T10E-400 144Mb x9 400 2 2 Weak/Strong 165 BGA no Comm none Production
GS81302T10E-350 144Mb x9 350 2 2 Weak/Strong 165 BGA no Comm none Production
GS81302T10E-333 144Mb x9 333 2 2 Weak/Strong 165 BGA no Comm none Production

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