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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Description Prix 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
N° de stock RS 189-7457
Référence fabricantDS1220AD-150+
11,444 €
Each (In a Tube of 14)
Unité
16kbit 2k x 8 bit 2k 8bit 100ns 8bit - Yes - Through Hole EDIP 24 38.1 x 18.29 x 10.67mm 10.67mm
N° de stock RS 189-7471
Référence fabricantDS1245Y-70IND+
24,53 €
Each (In a Tube of 11)
Unité
1Mbit 128k x 8 bit 128k 8bit 70ns 17bit - Yes Asynchronous Through Hole EDIP 32 44.2 x 18.8 x 9.9mm 9.9mm
N° de stock RS 192-1228
Référence fabricantDS1250Y-70+
66,671 €
Each (In a Tube of 11)
Unité
4096kbit 512k x 8 bit 512k 8bit 70ns 8bit - Yes - Through Hole EDIP 32 44.2 x 18.8 x 10.92mm 10.92mm
N° de stock RS 192-1574
Référence fabricantDS1245AB-120+
24,79 €
Each
Unité
1024kbit 128k x 8 bit 128k 8bit 70ns 8bit - Yes - Through Hole EDIP 32 44.2 x 18.8 x 10.92mm 10.92mm
N° de stock RS 192-1214
Référence fabricantDS1225AB-200+
13,815 €
Each (In a Tube of 12)
Unité
64kbit 8k x 8 bit 8k 8bit 70ns 8bit - Yes - Through Hole EDIP 28 39.37 x 18.29 x 10.67mm 10.67mm
N° de stock RS 192-1225
Référence fabricantDS1245AB-120+
23,279 €
Each (In a Tube of 11)
Unité
1024kbit 128k x 8 bit 128k 8bit 70ns 8bit - Yes - Through Hole EDIP 32 44.2 x 18.8 x 10.92mm 10.92mm
N° de stock RS 192-1229
Référence fabricantDS1250Y-70IND+
67,139 €
Each (In a Tube of 11)
Unité
4096kbit 512k x 8 bit 512k 8bit 70ns 8bit - Yes - Through Hole EDIP 32 44.2 x 18.8 x 10.92mm 10.92mm
N° de stock RS 192-1655
Référence fabricantDS1225AD-200+
15,20 €
Each
Unité
64kbit 8k x 8 bit 8k 8bit 200ns 13bit - Yes Asynchronous Through Hole EDIP 28 39.37 x 18.8 x 9.35mm 9.35mm
N° de stock RS 189-9175
Référence fabricantDS1245Y-100+
25,51 €
Each
Unité
1Mbit 128k x 8 bit 128k 8bit 100ns 17bit - Yes Asynchronous Through Hole EDIP 32 44.2 x 18.8 x 9.9mm 9.9mm
N° de stock RS 797-9467
Référence fabricantDS1345YP-100+
13,74 €
Each
Unité
1024kbit 128k x 8 bit 128k 8bit 70ns 8bit - - - Surface Mount Power Cap 34 0.995 x 0.93 x 0.032in 0.81mm
N° de stock RS 797-9398
Référence fabricantDS1245AB-100+
25,50 €
Each
Unité
1024kbit 128k x 8 bit 128k 8bit 70ns 8bit - Yes - Through Hole EDIP 32 44.2 x 18.8 x 10.92mm 10.92mm
N° de stock RS 189-9153
Référence fabricantDS1220AD-150+
12,20 €
Each
Unité
16kbit 2k x 8 bit 2k 8bit 100ns 8bit - Yes - Through Hole EDIP 24 38.1 x 18.29 x 10.67mm 10.67mm
N° de stock RS 192-1555
Référence fabricantDS1220AD-200IND+
11,80 €
Each
Unité
16kbit 2k x 8 bit 2k 8bit 100ns 8bit - Yes - Through Hole EDIP 24 38.1 x 18.29 x 10.67mm 10.67mm
N° de stock RS 189-9239
Référence fabricantDS1245Y-70IND+
26,07 €
Each
Unité
1Mbit 128k x 8 bit 128k 8bit 70ns 17bit - Yes Asynchronous Through Hole EDIP 32 44.2 x 18.8 x 9.9mm 9.9mm
N° de stock RS 192-1217
Référence fabricantDS1225AD-200+
14,206 €
Each (In a Tube of 12)
Unité
64kbit 8k x 8 bit 8k 8bit 200ns 13bit - Yes Asynchronous Through Hole EDIP 28 39.37 x 18.8 x 9.35mm 9.35mm
N° de stock RS 192-1603
Référence fabricantDS1225AB-85+
14,16 €
Each
Unité
64kbit 8k x 8 bit 8k 8bit 85ns 8bit - Yes - Through Hole EDIP 28 39.37 x 18.29 x 10.67mm 10.67mm
N° de stock RS 192-1649
Référence fabricantDS1250Y-70+
74,06 €
Each
Unité
4096kbit 512k x 8 bit 512k 8bit 70ns 8bit - Yes - Through Hole EDIP 32 44.2 x 18.8 x 10.92mm 10.92mm
N° de stock RS 189-7465
Référence fabricantDS1230Y-70IND+
18,264 €
Each (In a Tube of 12)
Unité
256kbit 32k x 8 bit 32k 8bit 70ns 15bit - Yes - Through Hole EDIP 28 39.37 x 18.8 x 10.67mm 10.67mm
N° de stock RS 189-7468
Référence fabricantDS1245Y-100+
23,986 €
Each (In a Tube of 11)
Unité
1Mbit 128k x 8 bit 128k 8bit 100ns 17bit - Yes Asynchronous Through Hole EDIP 32 44.2 x 18.8 x 9.9mm 9.9mm
N° de stock RS 189-9133
Référence fabricantDS1220AD-100IND+
11,07 €
Each
Unité
16kbit 2k x 8 bit 2k 8bit 100ns 8bit - Yes - Through Hole EDIP 24 38.1 x 18.29 x 10.67mm 10.67mm