Quad SRAMs

Quad SRAMs

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

 

SigmaQuad SRAMs are synchronous memories with separate read and write data buses. "Quad" refers to their ability to transfer 4 beats of data (2 beats per data bus) in a single clock cycle. SigmaQuad memories are ideal for applications that alternate between read and write operations frequently, at operating speeds of 250 MHz and above.

 

GSI's SigmaQuad devices are compatible with all competitor Quad Data Rate SRAMs.

 

 

Features

  • Simultaneous Read and Write SigmaQuad Interface 
  • Dual Double Data Rate Interface
  • Pipelined Read operation 
  • Fully coherent Read and Write pipelines
  • ZQ mode pin for programmable output drive strength
  • IEEE 1149.1 JTAG-compliant Boundary Scan 
  • JEDEC-standard pinout and package 
  • RoHS-compliant package available


Name Density Config. Speed (MHz) Burst Length Read Latency (RL) On-Die Termination Package 6/6 RoHS Temp Special Features Status
SigmaQuad-IVe
View 48 products 		144Mb x18, x36 Up to 1333 2, 4 5, 6 Weak/Strong/None 260 BGA yes Mil, Ind, Comm See Individual Products Production, Active
SigmaQuad-IIIe
View 174 products 		72Mb, 144Mb, 288Mb x18, x36 Up to 833 2, 4 2, 3 Weak/Strong/None 260 BGA yes, no Mil, Ext, Ind, Comm See Individual Products Production, Active, NRND
SigmaQuad-II+
View 1872 products 		18Mb, 36Mb, 72Mb, 144Mb, 288Mb x8, x9, x18, x36 Up to 633 2, 4 2, 2.5 n/a, Weak/Strong, Weak/None 165 CLGA, 165 CCGA, 165 BGA yes, no Mil, Ind, Comm See Individual Products Production, Active, NRND
SigmaQuad-II
View 752 products 		18Mb, 36Mb, 72Mb, 144Mb, 288Mb x8, x9, x18, x36 Up to 400 2, 4 1.5 n/a 165 BGA yes, no Mil, Ind, Comm See Individual Products Production, NRND, ContactSales
SigmaQuad-I
View 16 products 		18Mb x18, x36 Up to 200 2 1.5 n/a 165 BGA yes, no Ind, Comm See Individual Products Production
Part Number Density Configuration Speed (MHz) Burst Length Read Latency On Die Termination Package 6/6 ROHS Temp Special Features Status
GS8342D08BD-350M 36Mb x8 350 4 1.5 n/a 165 BGA no Mil none Production
GS8342Q36BD-333M 36Mb x36 333 2 1.5 n/a 165 BGA no Mil none Production
GS8342Q18BD-333M 36Mb x18 333 2 1.5 n/a 165 BGA no Mil none Production
GS8342Q09BD-333M 36Mb x9 333 2 1.5 n/a 165 BGA no Mil none Production
GS8342Q08BD-333M 36Mb x8 333 2 1.5 n/a 165 BGA no Mil none Production
GS8342Q10BD-333M 36Mb x9 333 2 2 Weak/None 165 BGA no Mil none Production
GS8342Q07BD-333M 36Mb x8 333 2 2 Weak/None 165 BGA no Mil none Production
GS8342D36BD-350M 36Mb x36 350 4 1.5 n/a 165 BGA no Mil none Production
GS8342D18BD-350M 36Mb x18 350 4 1.5 n/a 165 BGA no Mil none Production
GS8342D09BD-350M 36Mb x9 350 4 1.5 n/a 165 BGA no Mil none Production
GS8342D20BD-500M 36Mb x18 500 4 2.5 Weak/None 165 BGA no Mil none Production
GS8342D11BD-500M 36Mb x9 500 4 2.5 Weak/None 165 BGA no Mil none Production
GS8342D06BD-500M 36Mb x8 500 4 2.5 Weak/None 165 BGA no Mil none Production
GS8342Q37BD-333M 36Mb x36 333 2 2 Weak/None 165 BGA no Mil none Production
GS8342Q19BD-333M 36Mb x18 333 2 2 Weak/None 165 BGA no Mil none Production
GS8342D38BD-500M 36Mb x36 500 4 2.5 Weak/None 165 BGA no Mil none Production
GS8662Q36BD-300M 72Mb x36 300 2 1.5 n/a 165 BGA no Mil none Contact Sales
GS8662Q18BD-300M 72Mb x18 300 2 1.5 n/a 165 BGA no Mil none Contact Sales
GS8662Q09BD-300M 72Mb x9 300 2 1.5 n/a 165 BGA no Mil none Contact Sales
GS8662Q08BD-300M 72Mb x8 300 2 1.5 n/a 165 BGA no Mil none Contact Sales
GS8662DT37RE-350M 72Mb x36 350 4 2 Weak/Strong 165 BGA no Mil Rad-Tolerant Production
GS8662DT19RE-250M 72Mb x18 250 4 2 Weak/Strong 165 BGA no Mil Rad-Tolerant Production
GS8662DT37RE-250M 72Mb x36 250 4 2 Weak/Strong 165 BGA no Mil Rad-Tolerant Production
GS81302DT19RE-350M 144Mb x18 350 4 2 Weak/Strong 165 BGA no Mil Rad-Tolerant Production
GS81302DT37RE-350M 144Mb x36 350 4 2 Weak/Strong 165 BGA no Mil Rad-Tolerant Production

Features

  • Simultaneous Read and Write SigmaQuad Interface 
  • Dual Double Data Rate Interface
  • Pipelined Read operation 
  • Fully coherent Read and Write pipelines
  • ZQ mode pin for programmable output drive strength
  • IEEE 1149.1 JTAG-compliant Boundary Scan 
  • JEDEC-standard pinout and package 
  • RoHS-compliant package available

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