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. 146-8876
Fabrikantnummer47C04-I/P
FabrikantMicrochip
0,576 €
Each (In a Pack of 10)
Aantal stuks
4kbit 512k x 8 bit 512k 8bit - - 1000kHz Yes Synchronous Through Hole DIP 8 10.2 x 7.1 x 4.83mm 4.83mm
RS-stocknr. 170-0923
FabrikantnummerAS7C38098A-10TIN
FabrikantAlliance Memory
8,40 €
Each (In a Tray of 135)
Aantal stuks
8Mbit 512k x 16 bit 512k 16bit 10ns 16bit 1MHz Yes Asynchronous Surface Mount TSOP 44 18.618 x 10.363 x 1.05mm 1.05mm
RS-stocknr. 744-4549
FabrikantnummerAS7C1026B-12TCN
FabrikantAlliance Memory
2,50 €
Each
Aantal stuks
1Mbit 64k x 16 bit 64k 16bit 12ns 16bit - Yes Asynchronous Surface Mount TSOP 44 18.52 x 10.26 x 1.05mm 1.05mm
RS-stocknr. 188-5319
FabrikantnummerCY62128EV30LL-45SXI
2,579 €
Each (In a Tube of 25)
Aantal stuks
1Mbit 128k x 8 bit 128k 8bit 45ns - 1MHz Yes - Surface Mount SOIC 32 20.75 x 11.43 x 2.88mm 2.88mm
RS-stocknr. 193-8457
FabrikantnummerCY621472E30LL-45ZSXI
5,365 €
Each (In a Pack of 2)
Aantal stuks
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. 125-7527
FabrikantnummerCY7C1011DV33-10ZSXI
3,815 €
Each (In a Pack of 2)
Aantal stuks
2Mbit 128k x 16 bit 128k 16bit 10ns 16bit - Yes Asynchronous Surface Mount TSOP 44 18.517 x 10.262 x 1.044mm 1.044mm
RS-stocknr. 901-5795
FabrikantnummerR1LV1616HSA-4SI#B0
44,01 €
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Aantal stuks
16Mbit 2M x 8 bit 2M 8bit 45ns - - Yes Asynchronous Surface Mount TSOP 48 18.5 x 12.1 x 1mm 1mm
Nieuw
RS-stocknr. 194-8883
FabrikantnummerCY62167DV30LL-55BVXI
9,755 €
Each (In a Tray of 210)
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 171-0973
FabrikantnummerCY62138FV30LL-45ZAXI
3,284 €
Each (In a Tray of 468)
Aantal stuks
2Mbit 256k x 8 bit 256k 8bit 45ns 8bit - Yes - Surface Mount STSOP 32 11.9 x 8.1 x 1.05mm 1.05mm
RS-stocknr. 177-5533
FabrikantnummerAS6C1008-55TIN
FabrikantAlliance Memory
1,545 €
Each (In a Tray of 156)
Aantal stuks
1Mbit 128k x 8 bit 128k 8bit 55ns 17bit - Yes Asynchronous Surface Mount TSOP 32 8 x 18.4 x 1mm 1mm
RS-stocknr. 125-6934
FabrikantnummerCY14B104NA-ZS25XI
29,42 €
Each
Aantal stuks
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
Nieuw
RS-stocknr. 194-8972
FabrikantnummerCY7C1470BV33-167AXI
165,39 €
Each
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 170-2051
FabrikantnummerIS61WV12816BLL-12TLI
FabrikantISSI
3,878 €
Each (In a Tray of 135)
Aantal stuks
2Mbit 128k x 16 bit 128k 16bit 12ns 17bit - Yes Asynchronous Surface Mount TSOP 44 18.52 x 10.29 x 1.05mm 1.05mm
RS-stocknr. 198-7995
FabrikantnummerCY62128EV30LL-45ZAXIT
1,64 €
Each (In a Pack of 5)
Aantal stuks
1024kbit 128k x 8 bit 128k 8bit 45ns - - - - - - - - -
RS-stocknr. 901-5837
FabrikantnummerRMLV0408EGSA-4S2#AA0
10,44 €
Each
Aantal stuks
4Mbit 512K x 8 bit 512K 8bit 45ns 8bit 1MHz Yes - Surface Mount TSOP 32 11.9 x 8.1 x 1mm 1mm
RS-stocknr. 126-7312
FabrikantnummerRMLV1616AGSD-5S2#AC0
23,41 €
Each
Aantal stuks
16Mbit 1M words x 16 bit, 2M words x 8 bit 1M, 2M 8 bit, 16 bit 55ns 19 bit, 20 bit - Yes - Surface Mount TSOP 52 10.89 x 8.99 x 1mm 1mm
RS-stocknr. 170-0745
FabrikantnummerAS7C34096A-12TIN
FabrikantAlliance Memory
3,718 €
Each (In a Tray of 135)
Aantal stuks
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
Nieuw
RS-stocknr. 217-3672
Fabrikantnummer7130LA20JG
11,417 €
Each (In a Tube of 24)
Aantal stuks
8kbit 1K x 8 1K 8bit 20ns - - - - - - - - -
RS-stocknr. 177-5513
FabrikantnummerAS6C6264-55PCN
FabrikantAlliance Memory
2,061 €
Each (In a Tube of 15)
Aantal stuks
64kbit 8k x 8 bit 8k 8bit 55ns 13bit - Yes Asynchronous Through Hole PDIP 28 36.32 x 13.21 x 3.81mm 3.81mm
RS-stocknr. 178-4054
Fabrikantnummer23LCV512-I/SN
FabrikantMicrochip
1,332 €
Each (In a Tube of 100)
Aantal stuks
512kbit 64k x 8 bit 64k 8bit 5ns 16bit 20MHz Yes - Surface Mount SOIC 8 4.9 x 3.9 x 1.25mm 1.25mm