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
GS82612QT19CE-350MQ 288Mb x18 350 2 2 Weak/Strong 165 CCGA no Mil Rad-Hard, Class-Q Screening Active
GS82612QT37CE-350MQ 288Mb x36 350 2 2 Weak/Strong 165 CCGA no Mil Rad-Hard, Class-Q Screening Active
GS82612QT19CE-250MQ 288Mb x18 250 2 2 Weak/Strong 165 CCGA no Mil Rad-Hard, Class-Q Screening Active
GS82612QT37CE-250MQ 288Mb x36 250 2 2 Weak/Strong 165 CCGA no Mil Rad-Hard, Class-Q Screening Active
GS8692QT19CE-350MQ 72Mb x18 350 2 2 Weak/Strong 165 CCGA no Mil Rad-Hard, Class-Q Screening Active
GS81332QT37CE-250MS 144Mb x36 250 2 2 Weak/Strong 165 CCGA no Mil Rad-Hard, ES Sampling Screening Active
GS82612QT19CE-350MS 288Mb x18 350 2 2 Weak/Strong 165 CCGA no Mil Rad-Hard, ES Sampling Screening Active
GS82612QT37CE-350MS 288Mb x36 350 2 2 Weak/Strong 165 CCGA no Mil Rad-Hard, ES Sampling Screening Active
GS82612QT19CE-250MS 288Mb x18 250 2 2 Weak/Strong 165 CCGA no Mil Rad-Hard, ES Sampling Screening Active
GS82612QT37CE-250MS 288Mb x36 250 2 2 Weak/Strong 165 CCGA no Mil Rad-Hard, ES Sampling Screening Active
GS8692QT19CE-350MS 72Mb x18 350 2 2 Weak/Strong 165 CCGA no Mil Rad-Hard, ES Sampling Screening Active
GS8692QT37CE-350MS 72Mb x36 350 2 2 Weak/Strong 165 CCGA no Mil Rad-Hard, ES Sampling Screening Active
GS8692QT19CE-250MS 72Mb x18 250 2 2 Weak/Strong 165 CCGA no Mil Rad-Hard, ES Sampling Screening Active
GS8692QT37CE-250MS 72Mb x36 250 2 2 Weak/Strong 165 CCGA no Mil Rad-Hard, ES Sampling Screening Active
GS81302QT20AGD-400I 144Mb x18 400 2 2.5 Weak/Strong 165 BGA yes Ind none Production
GS81302QT38AGD-450 144Mb x36 450 2 2.5 Weak/Strong 165 BGA yes Comm none Production
GS81302QT38AGD-450I 144Mb x36 450 2 2.5 Weak/Strong 165 BGA yes Ind none Production
GS81302QT38AGD-500 144Mb x36 500 2 2.5 Weak/Strong 165 BGA yes Comm none Production
GS81302QT38AGD-500I 144Mb x36 500 2 2.5 Weak/Strong 165 BGA yes Ind none Production
GS81302QT38AGD-400 144Mb x36 400 2 2.5 Weak/Strong 165 BGA yes Comm none Production
GS81302QT38AGD-400I 144Mb x36 400 2 2.5 Weak/Strong 165 BGA yes Ind none Production
GS81332QT19CE-350MS 144Mb x18 350 2 2 Weak/Strong 165 CCGA no Mil Rad-Hard, ES Sampling Screening Active
GS81332QT37CE-350MS 144Mb x36 350 2 2 Weak/Strong 165 CCGA no Mil Rad-Hard, ES Sampling Screening Active
GS81332QT19CE-250MS 144Mb x18 250 2 2 Weak/Strong 165 CCGA no Mil Rad-Hard, ES Sampling Screening Active
GS81302Q38AGD-500 144Mb x36 500 2 2.5 Weak/None 165 BGA yes Comm none 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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