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
GS82582T20GE-450 288Mb x18 450 2 2.5 Weak/None 165 BGA yes Comm none Production
GS82582T20GE-400 288Mb x18 400 2 2.5 Weak/None 165 BGA yes Comm none Production
GS82582T20GE-550I 288Mb x18 550 2 2.5 Weak/None 165 BGA yes Ind none Production
GS82582T20GE-500I 288Mb x18 500 2 2.5 Weak/None 165 BGA yes Ind none Production
GS82582T20GE-450I 288Mb x18 450 2 2.5 Weak/None 165 BGA yes Ind none Production
GS82582T20GE-400I 288Mb x18 400 2 2.5 Weak/None 165 BGA yes Ind none Production
GS82582T38GE-550 288Mb x36 550 2 2.5 Weak/None 165 BGA yes Comm none Production
GS82582T38GE-500 288Mb x36 500 2 2.5 Weak/None 165 BGA yes Comm none Production
GS82582T38GE-450 288Mb x36 450 2 2.5 Weak/None 165 BGA yes Comm none Production
GS82582T38GE-400 288Mb x36 400 2 2.5 Weak/None 165 BGA yes Comm none Production
GS82582T38GE-550I 288Mb x36 550 2 2.5 Weak/None 165 BGA yes Ind none Production
GS82582T38GE-500I 288Mb x36 500 2 2.5 Weak/None 165 BGA yes Ind none Production
GS82582T38GE-450I 288Mb x36 450 2 2.5 Weak/None 165 BGA yes Ind none Production
GS82582T38GE-400I 288Mb x36 400 2 2.5 Weak/None 165 BGA yes Ind none Production
GS82582TT20GE-550 288Mb x18 550 2 2.5 Weak/Strong 165 BGA yes Comm none Production
GS82582TT20GE-500 288Mb x18 500 2 2.5 Weak/Strong 165 BGA yes Comm none Production
GS82582TT20GE-450 288Mb x18 450 2 2.5 Weak/Strong 165 BGA yes Comm none Production
GS82582TT20GE-400 288Mb x18 400 2 2.5 Weak/Strong 165 BGA yes Comm none Production
GS82582TT20GE-550I 288Mb x18 550 2 2.5 Weak/Strong 165 BGA yes Ind none Production
GS82582TT20GE-500I 288Mb x18 500 2 2.5 Weak/Strong 165 BGA yes Ind none Production

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