SRAM

SRAM stands for Static Random Access Memory and is a type of semiconductor memory that uses bistable latching circuitry (flip-flop) to store each bit. It holds data bits in its memory so long as power is being supplied. It cannot hold data if power is removed. SRAM is used where speed or low power are needed. It’s higher density than DRAM, and less complicated structure makes it ideal to use in semiconductor memory scenarios where high capacity memory is used as seen in the working memory within computers.

SRAM is different to DRAM (dynamic RAM, which stores bits in cells consisting of a capacitor and a transistor), due to the fact that SRAM does not have to be refreshed unlike Dynamic which will lose data unless refreshed periodically. Also SRAM is faster and more expensive than DRAM.

SRAM is used for a computer’s cache memory as well as being part of the RAM digital to analogue converter found on a video card. SRAM can be designed with a general CMOS technology process with six transistors (6T memory cell) and no capacitors. Since transistors do not require power to prevent leakage, SRAM does not have to be refreshed on a regular basis:

Features

  • Data is held statically – data is held in the semiconductor memory, no need to refresh data after every read data operation as long as the power is applied to the memory
  • Three operational states which are hold, write and read
  • Bistable (cross-coupled) INVs for storage
  • Access transistors MAL and MAR – access to stored data for read and write
  • Word line, WL, controls access – WL=0 (hold operation), WL=1 (read/write operation)
  • Long data lifetime

Applications

  • Computers
  • Workstations
  • Routers
  • LCD screens and printers
  • Electronics
  • Microprocessors

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Omschrijving Prijs Memory Size Organisation Number of Words Number of Bits per Word Maximum Random Access Time Address Bus Width Clock Frequency Low Power Timing Type Mounting Type Package Type Pin Count Dimensions Height
RS-stocknr. 170-2069
FabrikantnummerIDT7130LA25JGI
FabrikantIDT
9,638 €
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Aantal stuks
8kbit 1k x 8 bit 1k 8bit 25ns 8bit - Yes Asynchronous Surface Mount PLCC 52 19 x 19 x 3.63mm 3.63mm
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RS-stocknr. 194-8950
FabrikantnummerCY7C1371KV33-100AXC
25,11 €
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- - - - - - - - - - - - - -
RS-stocknr. 193-8460
FabrikantnummerCY7C1018DV33-10VXIT
1,534 €
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Aantal stuks
1Mbit 128k x 8 bit 128k 8bit 10ns 8bit 1MHz - Asynchronous Through Hole SOJ 32 0.810 x 0.292 x 0.103in 2.62mm
RS-stocknr. 181-1549
FabrikantnummerCY7C1041GN30-10ZSXI
3,647 €
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4Mbit 256k x 16 bit 256k 8bit 10ns 16bit 100MHz - Asynchronous Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS-stocknr. 538-186
FabrikantnummerAS6C6264-55SIN
FabrikantAlliance Memory
2,005 €
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Aantal stuks
64kbit 8k x 8 bit 8k 8bit 55ns 13bit - Yes Asynchronous Surface Mount SOP 28 18.49 x 8.64 x 2.49mm 2.49mm
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RS-stocknr. 217-3667
Fabrikantnummer70V28L20PFGI
76,63 €
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1024kbit 64K x 16 64K 16bit 20ns - - - - - - - - -
RS-stocknr. 912-2714
Fabrikantnummer23LC1024-I/P
FabrikantMicrochip
1,754 €
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Aantal stuks
1Mbit 128k x 8 bit 128k 8bit 5ns 24bit 20MHz Yes Synchronous Through Hole PDIP 8 10.16 x 7.11 x 4.95mm 4.95mm
RS-stocknr. 193-8472
FabrikantnummerCY7C199D-10VXIT
1,80 €
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256kbit 32k x 8 bit 32k 8bit 10ns 8bit 1MHz - Asynchronous Through Hole SOJ 85 11.9 x 8.1 x 1mm 1mm
RS-stocknr. 391-624
FabrikantnummerIS62WV25616BLL-55TLI
FabrikantISSI
4,32 €
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4Mbit 256k x 16 bit 256k 16bit 55ns 18bit - Yes Asynchronous Surface Mount TSOP 44 18.52 x 10.29 x 1.05mm 1.05mm
RS-stocknr. 714-4835
FabrikantnummerIDT70V25L20PFGI
FabrikantIDT
33,94 €
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128kbit 8k x 16 bit 8k 16bit 20ns 26bit - Yes Asynchronous Surface Mount TQFP 100 14 x 14 x 1.4mm 1.4mm
RS-stocknr. 538-215
FabrikantnummerAS7C34096A-12TIN
FabrikantAlliance Memory
4,63 €
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4Mbit 512k x 8 bit 512k 8bit 12ns 19bit - Yes Asynchronous Surface Mount TSOP 44 18.54 x 10.29 x 1.05mm 1.05mm
RS-stocknr. 193-8465
FabrikantnummerCY7C1021DV33-10VXIT
2,238 €
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1Mbit 64k x 16 bit 64k 16bit 10ns 16bit 1MHz - Asynchronous Through Hole SOJ 44 1.12 x 0.395 x 0.095in 2.41mm
RS-stocknr. 125-7533
FabrikantnummerCY7C1021DV33-10ZSXI
2,298 €
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1Mbit 64k x 16 bit 64k 16bit 10ns 16bit - Yes Asynchronous Surface Mount TSOP 44 18.517 x 10.262 x 1.044mm 1.044mm
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RS-stocknr. 194-8951
FabrikantnummerCY7C1372KV33-167AXI
25,486 €
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- - - - - - - - - - - - - -
RS-stocknr. 193-8456
FabrikantnummerCY621472E30LL-45ZSXI
4,188 €
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4Mbit 256k x 16 bit 256k 16bit 45ns 16bit 1MHz Yes Asynchronous Surface Mount TSOP II 44 18.517 x 10.262 x 1.044mm 1.04mm
RS-stocknr. 189-7465
FabrikantnummerDS1230Y-70IND+
FabrikantMaxim Integrated
18,264 €
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256kbit 32k x 8 bit 32k 8bit 70ns 15bit - Yes - Through Hole EDIP 28 39.37 x 18.8 x 10.67mm 10.67mm
RS-stocknr. 198-7996
FabrikantnummerCY62147EV30LL-45ZSXIT
2,205 €
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4096kbit 256k x 16 bit 256k 16bit 45ns - - - - - - - - -
RS-stocknr. 171-0962
FabrikantnummerCY14B104NA-ZS25XI
23,279 €
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4Mbit 256k x 16 bit, 512k x 8 bit 256 k, 512k 8 bit, 16bit 25ns 8 bit, 16 bit - Yes - Surface Mount TSOP 44 18.517 x 10.262 x 1.044mm 1.044mm
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RS-stocknr. 194-8867
FabrikantnummerCY62146ESL-45ZSXI
5,611 €
Each (In a Tray of 135)
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- - - - - - - - - - - - - -
RS-stocknr. 125-6978
FabrikantnummerCY62138EV30LL-45BVXI
3,735 €
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Aantal stuks
2Mbit 256k x 8 bit 256k 8bit 45ns 8bit - Yes - Surface Mount VFBGA 36 6 x 8 x 0.81mm 0.81mm