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 include:
• 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
• Simplicity
• Faster – quick and easy to control
• Used as cache memory
• Large size
• Price – expensive as it uses more chips than DRAM for the same amount of storage space
• High power Consumption
• Reliability
Disadvantages include:
• Capacity
• Varying power consumption
Can be found in the following:
• Computers
• Workstations
• Routers
• LCD screens and printers
• Electronics
• Microprocessor

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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. 171-0984
FabrikantnummerCY62177EV30LL-55ZXI
39,976 €
Each (In a Tray of 96)
Aantal stuks
32Mbit 2M x 16 bit 2M 16bit 55ns 16bit - Yes - Surface Mount TSOP 48 18.4 x 12 x 1.05mm 1.05mm
RS-stocknr. 125-7518
FabrikantnummerCY62177EV30LL-55ZXI
46,06 €
Each
Aantal stuks
32Mbit 2M x 16 bit 2M 16bit 55ns 16bit - Yes - Surface Mount TSOP 48 18.4 x 12 x 1.05mm 1.05mm
RS-stocknr. 170-0737
FabrikantnummerAS6C8008-55ZIN
FabrikantAlliance Memory
5,012 €
Each (In a Tray of 135)
Aantal stuks
8Mbit 1024K words x 8 bit 1M 8bit 55ns 20bit - Yes Asynchronous Surface Mount TSOP 44 18.42 x 10.16 x 1mm 1mm
RS-stocknr. 538-154
FabrikantnummerAS6C8008-55ZIN
FabrikantAlliance Memory
6,01 €
Each
Aantal stuks
8Mbit 1024K words x 8 bit 1M 8bit 55ns 20bit - Yes Asynchronous Surface Mount TSOP 44 18.42 x 10.16 x 1mm 1mm
RS-stocknr. 177-5518
FabrikantnummerAS6C1008-55SIN
FabrikantAlliance Memory
1,691 €
Each (In a Tube of 22)
Aantal stuks
1Mbit 128K words x 8 bit 128K 8bit 55ns 17bit - Yes Asynchronous Surface Mount SOP 32 20.75 x 11.3 x 2.82mm 2.82mm
RS-stocknr. 538-170
FabrikantnummerAS6C1008-55SIN
FabrikantAlliance Memory
1,86 €
Each (In a Pack of 2)
Aantal stuks
1Mbit 128K words x 8 bit 128K 8bit 55ns 17bit - Yes Asynchronous Surface Mount SOP 32 20.75 x 11.3 x 2.82mm 2.82mm
RS-stocknr. 811-5175
FabrikantnummerIS61WV102416BLL-10TLI
FabrikantISSI
18,68 €
Each
Aantal stuks
16Mbit 1M x 16 1M 16bit 10ns 20bit - Yes Asynchronous Surface Mount TSOP 48 18.6 x 12.2 x 1.05mm 1.05mm
RS-stocknr. 714-4801
FabrikantnummerIDT70V28L20PFGI
FabrikantIDT
67,15 €
Each
Aantal stuks
1024kbit 64K x 16 bit 64K 16bit 20ns 16bit - Yes Asynchronous Surface Mount TQFP 100 14 x 14 x 1.4mm 1.4mm
RS-stocknr. 170-2073
FabrikantnummerIDT70V28L20PFGI
FabrikantIDT
61,627 €
Each (In a Tray of 6)
Aantal stuks
1024kbit 64K x 16 bit 64K 16bit 20ns 16bit - Yes Asynchronous Surface Mount TQFP 100 14 x 14 x 1.4mm 1.4mm
RS-stocknr. 170-2180
FabrikantnummerIS61WV102416BLL-10TLI
FabrikantISSI
17,144 €
Each (In a Tray of 96)
Aantal stuks
16Mbit 1M x 16 1M 16bit 10ns 20bit - Yes Asynchronous Surface Mount TSOP 48 18.6 x 12.2 x 1.05mm 1.05mm
RS-stocknr. 797-9354
FabrikantnummerDS1220AD-100IND+
FabrikantMaxim
12,64 €
Each
Aantal stuks
16kbit 2K x 8 bit 2K 8bit 100ns 8bit - Yes - Through Hole EDIP 24 38.1 x 18.29 x 10.67mm 10.67mm
RS-stocknr. 165-9423
FabrikantnummerDS1220AD-100IND+
FabrikantMaxim
11,492 €
Each (In a Tube of 14)
Aantal stuks
16kbit 2K x 8 bit 2K 8bit 100ns 8bit - Yes - Through Hole EDIP 24 38.1 x 18.29 x 10.67mm 10.67mm
RS-stocknr. 797-9379
FabrikantnummerDS1225AB-200+
FabrikantMaxim
16,58 €
Each
Aantal stuks
64kbit 8K x 8 bit 8K 8bit 70ns 8bit - Yes - Through Hole EDIP 28 39.37 x 18.29 x 10.67mm 10.67mm
RS-stocknr. 165-9390
FabrikantnummerDS1225AB-200+
FabrikantMaxim
15,07 €
Each (In a Tube of 12)
Aantal stuks
64kbit 8K x 8 bit 8K 8bit 70ns 8bit - Yes - Through Hole EDIP 28 39.37 x 18.29 x 10.67mm 10.67mm
RS-stocknr. 178-4109
Fabrikantnummer23K256-E/ST
FabrikantMicrochip
0,963 €
Each (In a Tube of 100)
Aantal stuks
256kbit 32768 x 8 bit 32768 8bit 50ns 16bit 20MHz - Synchronous Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm
RS-stocknr. 391-680
FabrikantnummerIS62C1024AL-35QLI
FabrikantISSI
2,03 €
Each (In a Pack of 2)
Aantal stuks
1Mbit 128K words x 8 bit 128K 8bit 35ns 17bit - Yes Asynchronous Surface Mount SOP 32 20.75 x 11.43 x 3mm 3mm
RS-stocknr. 742-4692
FabrikantnummerIDT6116LA25SOGI
FabrikantIDT
4,09 €
Each
Aantal stuks
16kbit 2K x 8 bit 2K 8bit 25ns 11bit - Yes Asynchronous Surface Mount SOIC 24 15.4 x 7.6 x 2.34mm 2.34mm
RS-stocknr. 170-2049
FabrikantnummerIS62C1024AL-35QLI
FabrikantISSI
1,86 €
Each (In a Tray of 84)
Aantal stuks
1Mbit 128K words x 8 bit 128K 8bit 35ns 17bit - Yes Asynchronous Surface Mount SOP 32 20.75 x 11.43 x 3mm 3mm
RS-stocknr. 823-4440
Fabrikantnummer23K256-E/ST
FabrikantMicrochip
1,04 €
Each (In a Pack of 5)
Aantal stuks
256kbit 32768 x 8 bit 32768 8bit 50ns 16bit 20MHz - Synchronous Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm
Nieuw
RS-stocknr. 188-5334
FabrikantnummerCY7C1021D-10ZSXI
2,331 €
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
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