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. 125-7536
FabrikantnummerCY7C1059DV33-10ZSXI
9,28 €
Each
Aantal stuks
8Mbit 1M x 8 bit 1M 8bit 10ns 8bit - Yes - Surface Mount TSOP 44 18.517 x 10.262 x 1.044mm 1.044mm
RS-stocknr. 124-2949
FabrikantnummerCY7C1021D-10ZSXI
2,66 €
Each (In a Pack of 2)
Aantal stuks
1Mbit 64k x 16 bit 64k 16bit 10ns 16bit 100MHz Yes Asynchronous Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS-stocknr. 170-2188
FabrikantnummerIS62WV1288BLL-55TLI
FabrikantISSI
1,573 €
Each (In a Tray of 156)
Aantal stuks
1Mbit 128k x 8 bit 128k 8bit 55ns 17bit - Yes - Surface Mount TSOP 32 18.5 x 8.1 x 0.95mm 0.95mm
RS-stocknr. 171-0993
FabrikantnummerCY7C1059DV33-10ZSXI
7,417 €
Each (In a Tray of 135)
Aantal stuks
8Mbit 1M x 8 bit 1M 8bit 10ns 8bit - Yes - Surface Mount TSOP 44 18.517 x 10.262 x 1.044mm 1.044mm
RS-stocknr. 538-237
FabrikantnummerAS7C1024C-12JIN
FabrikantAlliance Memory
4,105 €
Each (In a Pack of 2)
Aantal stuks
1Mbit 128k x 8 bit 128k 8bit 12ns 17bit - Yes Asynchronous Surface Mount SOJ 32 21.08 x 10.29 x 2.92mm 2.92mm
RS-stocknr. 803-2181
Fabrikantnummer23LCV1024-I/SN
FabrikantMicrochip
2,11 €
Each (In a Pack of 5)
Aantal stuks
1Mbit 128k x 8 bit 128k 8bit 5ns 24bit 20MHz Yes - Surface Mount SOIC 8 4.9 x 3.9 x 1.25mm 1.25mm
RS-stocknr. 811-5181
FabrikantnummerIS61WV25616BLL-10TLI
FabrikantISSI
3,485 €
Each (In a Pack of 2)
Aantal stuks
4Mbit 256k x 16 bit 256k 16bit 10ns 18bit - - Asynchronous Surface Mount TSOP 44 18.54 x 10.29 x 1.05mm 1.05mm
RS-stocknr. 912-6849
Fabrikantnummer23LCV1024-I/SN
FabrikantMicrochip
2,065 €
Each (In a Tube of 100)
Aantal stuks
1Mbit 128k x 8 bit 128k 8bit 5ns 24bit 20MHz Yes - Surface Mount SOIC 8 4.9 x 3.9 x 1.25mm 1.25mm
RS-stocknr. 170-2182
FabrikantnummerIS61WV25616BLL-10TLI
FabrikantISSI
2,76 €
Each (In a Tray of 135)
Aantal stuks
4Mbit 256k x 16 bit 256k 16bit 10ns 18bit - - Asynchronous Surface Mount TSOP 44 18.54 x 10.29 x 1.05mm 1.05mm
RS-stocknr. 170-2075
FabrikantnummerIDT7132LA35PDG
FabrikantIDT
10,844 €
Each (In a Tube of 7)
Aantal stuks
16kbit 2k x 8 bit 2k 8bit 35ns 8bit - Yes Asynchronous Through Hole PDIP 48 61.7 x 15.24 x 3.8mm 3.8mm
RS-stocknr. 170-0895
FabrikantnummerAS6C4008-55PCN
FabrikantAlliance Memory
3,94 €
Each (In a Tube of 13)
Aantal stuks
4Mbit 512k x 8 bit 512k 8bit 55ns 19bit - Yes Asynchronous Through Hole PDIP 32 41.91 x 13.818 x 3.81mm 3.81mm
RS-stocknr. 538-160
FabrikantnummerAS6C4008-55SIN
FabrikantAlliance Memory
3,88 €
Each
Aantal stuks
4Mbit 512k x 8 bit 512k 8bit 55ns 19bit - Yes Asynchronous Surface Mount SOP 32 20.75 x 11.3 x 2.82mm 2.82mm
RS-stocknr. 188-5328
FabrikantnummerCY62158ELL-45ZSXI
8,141 €
Each (In a Tray of 135)
Aantal stuks
8Mbit 512k x 16 bit 512k 16bit 45ns 8bit 1MHz Yes - Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS-stocknr. 811-5208
FabrikantnummerIS62WV1288BLL-55TLI
FabrikantISSI
1,593 €
Each (In a Pack of 3)
Aantal stuks
1Mbit 128k x 8 bit 128k 8bit 55ns 17bit - Yes - Surface Mount TSOP 32 18.5 x 8.1 x 0.95mm 0.95mm
RS-stocknr. 188-5334
FabrikantnummerCY7C1021D-10ZSXI
2,135 €
Each (In a Tray of 135)
Aantal stuks
1Mbit 128k x 8 bit 128k 8bit 10ns 16bit 100MHz - Asynchronous Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS-stocknr. 124-2945
FabrikantnummerCY62158ELL-45ZSXI
10,26 €
Each
Aantal stuks
8Mbit 1M x 8 bit 1M 8bit 45ns 8bit 1MHz Yes - Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS-stocknr. 170-0738
FabrikantnummerAS6C4008-55SIN
FabrikantAlliance Memory
3,419 €
Each (In a Tube of 22)
Aantal stuks
4Mbit 512k x 8 bit 512k 8bit 55ns 19bit - Yes Asynchronous Surface Mount SOP 32 20.75 x 11.3 x 2.82mm 2.82mm
Nieuw
RS-stocknr. 194-8856
FabrikantnummerCY62128ELL-45ZAXI
2,686 €
Each (In a Pack of 5)
Aantal stuks
- - - - - - - - - - - - - -
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. 170-2052
FabrikantnummerIS61LV5128AL-10TLI
FabrikantISSI
3,593 €
Each (In a Tray of 135)
Aantal stuks
4Mbit 512k x 8 bit 512k 8bit 10ns 19bit - Yes Asynchronous Surface Mount TSOP 44 18.52 x 10.29 x 1.05mm 1.05mm