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
GS81302TT20E-400 144Mb x18 400 2 2.5 Weak/Strong 165 BGA no Comm none Production
GS81302TT20E-350 144Mb x18 350 2 2.5 Weak/Strong 165 BGA no Comm none Production
GS81302TT20E-500I 144Mb x18 500 2 2.5 Weak/Strong 165 BGA no Ind none Production
GS81302TT20E-450I 144Mb x18 450 2 2.5 Weak/Strong 165 BGA no Ind none Production
GS81302TT20E-400I 144Mb x18 400 2 2.5 Weak/Strong 165 BGA no Ind none Production
GS81302TT20E-350I 144Mb x18 350 2 2.5 Weak/Strong 165 BGA no Ind none Production
GS81302TT38E-500 144Mb x36 500 2 2.5 Weak/Strong 165 BGA no Comm none Production
GS81302TT38E-450 144Mb x36 450 2 2.5 Weak/Strong 165 BGA no Comm none Production
GS81302TT38E-400 144Mb x36 400 2 2.5 Weak/Strong 165 BGA no Comm none Production
GS81302TT38E-350 144Mb x36 350 2 2.5 Weak/Strong 165 BGA no Comm none Production
GS81302TT38E-500I 144Mb x36 500 2 2.5 Weak/Strong 165 BGA no Ind none Production
GS81302TT38E-450I 144Mb x36 450 2 2.5 Weak/Strong 165 BGA no Ind none Production
GS81302TT38E-400I 144Mb x36 400 2 2.5 Weak/Strong 165 BGA no Ind none Production
GS81302TT38E-350I 144Mb x36 350 2 2.5 Weak/Strong 165 BGA no Ind none Production
GS81302T06E-500 144Mb x8 500 2 2.5 Weak/None 165 BGA no Comm none Production
GS81302T06E-450 144Mb x8 450 2 2.5 Weak/None 165 BGA no Comm none Production
GS81302T06E-400 144Mb x8 400 2 2.5 Weak/None 165 BGA no Comm none Production
GS81302T06E-350 144Mb x8 350 2 2.5 Weak/None 165 BGA no Comm none Production
GS81302T06E-500I 144Mb x8 500 2 2.5 Weak/None 165 BGA no Ind none Production
GS81302T06E-450I 144Mb x8 450 2 2.5 Weak/None 165 BGA no Ind none Production

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