GSI Technology’s No Bus Turnaround (NBT) product portfolio is the largest in the industry with six different densities in x18, 32, 36 and 72 bit widths. Our NBT SRAMs provide the fastest clock rates and lowest power of any in the world.

NBT SRAMs are synchronous, burst-capable memories with a simplified interface that is designed to use a data bus’s maximum bandwidth. NBT devices do not require “turnaround” cycles (idle clock cycles between a read and write operation). NBT SRAMs are used in networking, industrial, automotive and medical imaging applications where a mid-range performance point (typically a 333–166 MHz clock rate) is required.


Name Density Config. Cycle Time (MHz) Access Time (ns) Voltage (V) Package 6/6 ROHS Temp Special Features Status
View 2245 products
144Mb, 72Mb, 36Mb, 18Mb, 9Mb, 4Mb, 288Mb x18, x36, x72, x32 Up to 400 As Low As 4 2.5, 3.3, 1.8 119 BGA, 209 BGA, 100 TQFP, 165 BGA, Ceramic QFP no, yes Comm, Ind, Mil See Individual Products Production, Pre-Qual, Production-NRND, Active
Part Number Density Cofig. Cycle Time (MHz) Access Time (ns) Voltage (V) Package 6/6 RoHS Temp Special Features Status
GS81280Z36GT-200V 144Mb x36 200 6.5 1.8, 2.5 100 TQFP yes Comm none Production
GS881Z36CGT-300 9Mb x36 300 5 2.5, 3.3 100 TQFP yes Comm JTAG Production
GS8161Z36DGD-333 18Mb x36 333 4.5 2.5, 3.3 165 BGA yes Comm JTAG Production
GS8162Z36BGD-250V 18Mb x36 250 5.5 1.8, 2.5 165 BGA yes Comm JTAG, FLXDrive Production-NRND
GS842Z36CB-166 4Mb x36 166 7 3.3 119 BGA no Comm JTAG, FLXDrive Production