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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
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SigmaQuad-IIIe
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SigmaQuad-II+
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SigmaQuad-II
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144Mb, 72Mb x8, x9, x18, x36 Up to 300 2 1.5 n/a 165 BGA no Mil See Individual Products Contact Sales
SigmaQuad-I
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Part Number Density Config. Speed (MHz) Burst Length Read Latency (RL) On-Die Termination Package 6/6 ROHS Temp Special Features Status
GS8662Q08BD-300M 72Mb x8 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
GS8662Q18BD-300M 72Mb x18 300 2 1.5 n/a 165 BGA no Mil none Contact Sales
GS8662Q36BD-300M 72Mb x36 300 2 1.5 n/a 165 BGA no Mil none Contact Sales
GS81302Q08E-300M 144Mb x8 300 2 1.5 n/a 165 BGA no Mil none Contact Sales
GS81302Q09E-300M 144Mb x9 300 2 1.5 n/a 165 BGA no Mil none Contact Sales
GS81302Q18E-300M 144Mb x18 300 2 1.5 n/a 165 BGA no Mil none Contact Sales
GS81302Q36E-300M 144Mb x36 300 2 1.5 n/a 165 BGA no Mil none Contact Sales