STANDARD SRAM SRAM 2,400+

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Part	Manufacturer	Memory IC Type	Temperature Grade	No. of Terminals	Package Code	Package Shape	Package Body Material	Surface Mount	No. of Functions	Technology	Terminal Form	Parallel or Serial	Operating Mode	Maximum Supply Current	No. of Words	Nominal Supply Voltage / Vsup (V)	Power Supplies (V)	Memory Width	Package Style (Meter)	Package Equivalence Code	Sub-Category	Terminal Pitch	Maximum Operating Temperature	Output Characteristics	Organization	No. of Words Code	Minimum Operating Temperature	Terminal Finish	Terminal Position	No. of Ports	JESD-30 Code	Moisture Sensitivity Level (MSL)	Maximum Supply Voltage (Vsup)	Maximum Seated Height	Width	Qualification	Memory Density	Minimum Supply Voltage (Vsup)	Additional Features	JESD-609 Code	Maximum Time At Peak Reflow Temperature (s)	Peak Reflow Temperature (C)	Output Enable	Length	Maximum Access Time
SN74LS189AJP4	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	CERAMIC	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		16 words			4	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	3-STATE	16X4	16	0 Cel		DUAL		R-XDIP-T16														80 ns
SN74ALS318NP1	Texas Instruments	STANDARD SRAM	COMMERCIAL	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		64 words			4	IN-LINE	DIP20,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	64X4	64	0 Cel		DUAL		R-PDIP-T20					Not Qualified					NOT SPECIFIED	NOT SPECIFIED
SN74ALS317NP3	Texas Instruments	STANDARD SRAM	COMMERCIAL	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		64 words			4	IN-LINE	DIP20,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	64X4	64	0 Cel		DUAL		R-PDIP-T20										NOT SPECIFIED	NOT SPECIFIED
SN74S289AJP4	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	CERAMIC	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		16 words	5	5	4	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	16X4	16	0 Cel		DUAL		R-XDIP-T16														35 ns
SN74ALS218N3	Texas Instruments	STANDARD SRAM	COMMERCIAL	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		32 words			8	IN-LINE	DIP20,.3	SRAMs	2.54 mm	70 Cel	3-STATE	32X8	32	0 Cel		DUAL		R-PDIP-T20										NOT SPECIFIED	NOT SPECIFIED
SN74S214J	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	CERAMIC	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS	155 mA	1024 words	5	5	1	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	3-STATE	1KX1	1K	0 Cel		DUAL		R-XDIP-T16					Not Qualified	1024 bit								70 ns
SN74LS316J4	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	CERAMIC	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		64 words			4	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	64X4	64	0 Cel		DUAL		R-XDIP-T16										NOT SPECIFIED	NOT SPECIFIED
SN74S207JP4	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	CERAMIC	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		256 words			4	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	3-STATE	256X4	256	0 Cel		DUAL		R-XDIP-T16						1024 bit				NOT SPECIFIED	NOT SPECIFIED
SN74S189AN1	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		16 words			4	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	3-STATE	16X4	16	0 Cel		DUAL		R-PDIP-T16					Not Qualified									35 ns
SN74HCT219NP3	Texas Instruments	STANDARD SRAM	INDUSTRIAL	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		CMOS	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS	31 mA	16 words	5	5	4	IN-LINE	DIP16,.3	SRAMs	2.54 mm	85 Cel	3-STATE	16X4	16	-40 Cel		DUAL		R-PDIP-T16										NOT SPECIFIED	NOT SPECIFIED			27 ns
SN74S201J	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	CERAMIC	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		256 words			1	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	3-STATE	256X1	256	0 Cel		DUAL		R-XDIP-T16					Not Qualified					NOT SPECIFIED	NOT SPECIFIED			65 ns
SN74LS670NP3	Texas Instruments	STANDARD SRAM																																							NOT SPECIFIED	NOT SPECIFIED
SN74S189AN	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		16 words			4	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	3-STATE	16X4	16	0 Cel		DUAL		R-PDIP-T16					Not Qualified					NOT SPECIFIED	NOT SPECIFIED			35 ns
SN74LS214NP1	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS	58 mA	1024 words	5	5	1	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	3-STATE	1KX1	1K	0 Cel		DUAL		R-PDIP-T16					Not Qualified	1024 bit								95 ns
SN74ALS317N	Texas Instruments	STANDARD SRAM	COMMERCIAL	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		64 words			4	IN-LINE	DIP20,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	64X4	64	0 Cel		DUAL		R-PDIP-T20					Not Qualified					NOT SPECIFIED	NOT SPECIFIED
SN74S207N3	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		256 words			4	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	3-STATE	256X4	256	0 Cel		DUAL		R-PDIP-T16						1024 bit				NOT SPECIFIED	NOT SPECIFIED
SN74LS311NP1	Texas Instruments	STANDARD SRAM	COMMERCIAL	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		16 words			9	IN-LINE	DIP20,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	16X9	16	0 Cel		DUAL		R-PDIP-T20					Not Qualified					NOT SPECIFIED	NOT SPECIFIED
SN74LS311N1	Texas Instruments	STANDARD SRAM	COMMERCIAL	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		16 words			9	IN-LINE	DIP20,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	16X9	16	0 Cel		DUAL		R-PDIP-T20					Not Qualified					NOT SPECIFIED	NOT SPECIFIED
SN74LS670JP4	Texas Instruments	STANDARD SRAM																																							NOT SPECIFIED	NOT SPECIFIED
SN74LS289AN	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		16 words			4	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	16X4	16	0 Cel		DUAL		R-PDIP-T16					Not Qualified									80 ns
SN74ALS870DWR	Texas Instruments	STANDARD SRAM	COMMERCIAL	24	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1	TTL	GULL WING	PARALLEL	ASYNCHRONOUS		16 words	5		4	SMALL OUTLINE	SOP24,.4	Other Memory ICs	1.27 mm	70 Cel		16X4	16	0 Cel		DUAL		R-PDSO-G24		5.5 V	2.65 mm	7.5 mm	Not Qualified	64 bit	4.5 V	DUAL MEMORY FOR MULTIBUS ARCHITECTURE		NOT SPECIFIED	NOT SPECIFIED		15.4 mm	17 ns
SN74ALS217N3	Texas Instruments	STANDARD SRAM	COMMERCIAL	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		64 words			4	IN-LINE	DIP20,.3	SRAMs	2.54 mm	70 Cel	3-STATE	64X4	64	0 Cel		DUAL		R-PDIP-T20										NOT SPECIFIED	NOT SPECIFIED
SN74LS670NSRG4	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1	TTL	GULL WING	PARALLEL	ASYNCHRONOUS		4 words	5	5	4	SMALL OUTLINE	SOP16,.3	Other Memory ICs	1.27 mm	70 Cel		4X4	4	0 Cel	NICKEL PALLADIUM GOLD	DUAL		R-PDSO-G16	1	5.25 V	2 mm	5.3 mm	Not Qualified	16 bit	4.75 V		e4	30	260		10.2 mm	45 ns
SN74LS217J	Texas Instruments	STANDARD SRAM	COMMERCIAL	20	DIP	RECTANGULAR	CERAMIC	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		64 words			4	IN-LINE	DIP20,.3	SRAMs	2.54 mm	70 Cel	3-STATE	64X4	64	0 Cel		DUAL		R-XDIP-T20					Not Qualified					NOT SPECIFIED	NOT SPECIFIED
SN74LS314JP4	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	CERAMIC	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS	58 mA	1024 words	5	5	1	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	1KX1	1K	0 Cel		DUAL		R-XDIP-T16						1024 bit								95 ns
SN74LS312N1	Texas Instruments	STANDARD SRAM	COMMERCIAL	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		16 words			9	IN-LINE	DIP20,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	16X9	16	0 Cel		DUAL		R-PDIP-T20					Not Qualified					NOT SPECIFIED	NOT SPECIFIED
SN74S301NP3	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		256 words	5	5	1	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	256X1	256	0 Cel		DUAL		R-PDIP-T16										NOT SPECIFIED	NOT SPECIFIED			65 ns
SN74LS219J4	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	CERAMIC	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		16 words			4	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	3-STATE	16X4	16	0 Cel		DUAL		R-XDIP-T16
SN74172N1	Texas Instruments	STANDARD SRAM	COMMERCIAL	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		8 words			2	IN-LINE	DIP24,.6	SRAMs	2.54 mm	70 Cel	3-STATE	8X2	8	0 Cel		DUAL		R-PDIP-T24					Not Qualified
SN74LS311JP4	Texas Instruments	STANDARD SRAM	COMMERCIAL	20	DIP	RECTANGULAR	CERAMIC	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		16 words			9	IN-LINE	DIP20,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	16X9	16	0 Cel		DUAL		R-XDIP-T20										NOT SPECIFIED	NOT SPECIFIED
SN74172NP1	Texas Instruments	STANDARD SRAM	COMMERCIAL	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		8 words			2	IN-LINE	DIP24,.6	SRAMs	2.54 mm	70 Cel	3-STATE	8X2	8	0 Cel		DUAL		R-PDIP-T24					Not Qualified
SN74S201N1	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		256 words			1	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	3-STATE	256X1	256	0 Cel		DUAL		R-PDIP-T16					Not Qualified					NOT SPECIFIED	NOT SPECIFIED			65 ns
SN74S189AJ	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	CERAMIC	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		16 words			4	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	3-STATE	16X4	16	0 Cel		DUAL		R-XDIP-T16					Not Qualified									35 ns
SN74LS211J4	Texas Instruments	STANDARD SRAM	COMMERCIAL	20	DIP	RECTANGULAR	CERAMIC	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		16 words			9	IN-LINE	DIP20,.3	SRAMs	2.54 mm	70 Cel	3-STATE	16X9	16	0 Cel		DUAL		R-XDIP-T20										NOT SPECIFIED	NOT SPECIFIED
SN7481AJ-00	Texas Instruments	STANDARD SRAM	COMMERCIAL	14	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	1	TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		16 words	5		1	IN-LINE			2.54 mm	70 Cel	OPEN-COLLECTOR	16X1	16	0 Cel		DUAL	1	R-GDIP-T14		5.25 V	5.08 mm	7.62 mm	Not Qualified	16 bit	4.75 V					NO	19.56 mm	28 ns
SN74LS317JP4	Texas Instruments	STANDARD SRAM	COMMERCIAL	20	DIP	RECTANGULAR	CERAMIC	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		64 words			4	IN-LINE	DIP20,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	64X4	64	0 Cel		DUAL		R-XDIP-T20										NOT SPECIFIED	NOT SPECIFIED
SN74ALS218J4	Texas Instruments	STANDARD SRAM	COMMERCIAL	20	DIP	RECTANGULAR	CERAMIC	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		32 words			8	IN-LINE	DIP20,.3	SRAMs	2.54 mm	70 Cel	3-STATE	32X8	32	0 Cel		DUAL		R-XDIP-T20										NOT SPECIFIED	NOT SPECIFIED
SN74LS214NP3	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS	58 mA	1024 words	5	5	1	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	3-STATE	1KX1	1K	0 Cel		DUAL		R-PDIP-T16						1024 bit								95 ns
SN74LS311NP3	Texas Instruments	STANDARD SRAM	COMMERCIAL	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		16 words			9	IN-LINE	DIP20,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	16X9	16	0 Cel		DUAL		R-PDIP-T20										NOT SPECIFIED	NOT SPECIFIED
SN74S289N	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		16 words	5	5	4	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	16X4	16	0 Cel		DUAL		R-PDIP-T16					Not Qualified									35 ns
SN74S214N	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS	155 mA	1024 words	5	5	1	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	3-STATE	1KX1	1K	0 Cel		DUAL		R-PDIP-T16					Not Qualified	1024 bit								70 ns
SN74LS289N1	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		16 words			4	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	16X4	16	0 Cel		DUAL		R-PDIP-T16					Not Qualified
SN74S208J	Texas Instruments	STANDARD SRAM	COMMERCIAL	20	DIP	RECTANGULAR	CERAMIC	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		256 words			4	IN-LINE	DIP20,.3	SRAMs	2.54 mm	70 Cel	3-STATE	256X4	256	0 Cel		DUAL		R-XDIP-T20					Not Qualified	1024 bit				NOT SPECIFIED	NOT SPECIFIED
SN74ALS870NSR	Texas Instruments	STANDARD SRAM	COMMERCIAL	24	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1	TTL	GULL WING	PARALLEL	ASYNCHRONOUS		16 words	5		4	SMALL OUTLINE	SOP24,.3	Other Memory ICs	1.27 mm	70 Cel		16X4	16	0 Cel		DUAL		R-PDSO-G24		5.5 V	2 mm	5.3 mm	Not Qualified	64 bit	4.5 V	DUAL MEMORY FOR MULTIBUS ARCHITECTURE		NOT SPECIFIED	NOT SPECIFIED		15 mm	17 ns
SN74LS317NP3	Texas Instruments	STANDARD SRAM	COMMERCIAL	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		64 words			4	IN-LINE	DIP20,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	64X4	64	0 Cel		DUAL		R-PDIP-T20										NOT SPECIFIED	NOT SPECIFIED
SN74LS289N3	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		16 words			4	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	16X4	16	0 Cel		DUAL		R-PDIP-T16
SN74S289N3	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		16 words	5	5	4	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	16X4	16	0 Cel		DUAL		R-PDIP-T16														35 ns
SN74LS316N1	Texas Instruments	STANDARD SRAM	COMMERCIAL	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		64 words			4	IN-LINE	DIP16,.3	SRAMs	2.54 mm	70 Cel	OPEN-COLLECTOR	64X4	64	0 Cel		DUAL		R-PDIP-T16					Not Qualified					NOT SPECIFIED	NOT SPECIFIED

SRAM

SRAM, or Static Random-Access Memory, is a type of volatile computer memory that stores data as a flip-flop, which retains the data as long as power is supplied to the system. SRAM is commonly used as cache memory and in other applications where high-speed access to data is required.

SRAM is a type of memory that is faster and more expensive than DRAM (Dynamic Random-Access Memory). It is commonly used as cache memory in computer systems and other digital devices to improve the speed of data access. SRAM is also used in applications where high-speed data processing is required, such as in networking equipment, video games, and other high-performance computing applications.

One of the advantages of using SRAM is that it provides faster access to data than other types of memory, such as DRAM. This is because SRAM does not need to be refreshed like DRAM, which makes it faster and more reliable. Additionally, SRAM uses less power than other types of memory, which makes it ideal for use in battery-powered devices.

One of the disadvantages of using SRAM is that it is more expensive and less dense than other types of memory, such as DRAM or flash memory. This means that it is not suitable for applications that require large amounts of memory at a low cost. Additionally, SRAM is volatile, which means that it cannot store data permanently.