7201LA20P
Renesas Electronics America Inc
IC MEM FIFO 512X9 20NS 28DIP
En stock8044 pcs
7201LA20P.pdf
Uni-Directional
-
Tube
7201
-
-
-
-
No
Yes
No
Depth, Width
20ns
33.3MHz
4.5K (512 x 9)
80mA
Asynchronous
4.5 V ~ 5.5 V
28-PDIP
28-DIP (0.600", 15.24mm)
Through Hole
0°C ~ 70°C
7200
RFQ
72255LA20PF8
Renesas Electronics America Inc
IC FIFO 8KX18 LP 20NS 64QFP
En stock17992 pcs
72255LA20PF8.pdf
Uni-Directional
-
Tape & Reel (TR)
72255
-
-
-
-
Yes
Yes
Yes
Depth, Width
12ns
50MHz
144K (8K x 18)
80mA
Synchronous
4 V ~ 5.5 V
64-TQFP (14x14)
64-LQFP
Surface Mount
0°C ~ 70°C
7200
RFQ
72V225L15PFI
Renesas Electronics America Inc
IC FIFO SYNC 1024X18 15NS 64TQFP
En stock16317 pcs
72V225L15PFI.pdf
Uni-Directional
-
Tray
72V225
-
-
-
-
Yes
No
Yes
Depth, Width
10ns
66.7MHz
18K (1K x 18)
30mA
Synchronous
3 V ~ 3.6 V
64-TQFP (14x14)
64-LQFP
Surface Mount
-40°C ~ 85°C
72V
RFQ
72215LB25PFI
Renesas Electronics America Inc
IC FIFO 512X18 SYNC 25NS 64-TQFP
En stock7136 pcs
72215LB25PFI.pdf
Uni-Directional
-
Tray
72215
-
-
-
-
No
No
Yes
Depth, Width
15ns
40MHz
9K (512 x 18)
60mA
Synchronous
4.5 V ~ 5.5 V
64-TQFP (14x14)
64-LQFP
Surface Mount
-40°C ~ 85°C
7200
RFQ
CY7C4225V-15ASXC
Infineon Technologies
IC SYNC FIFO MEM 1KX18 64LQFP
En stock6890 pcs
CY7C4225V-15ASXC.pdf
Uni-Directional
-
Tray
7C4225
-
-
-
-
No
Yes
Yes
Depth, Width
11ns
66.7MHz
18K (1K x 18)
30mA
Synchronous
3 V ~ 3.6 V
64-TQFP (14x14)
64-LQFP
Surface Mount
0°C ~ 70°C
CY7C
RFQ
CY7C432-65PI
Cypress Semiconductor Corp
FIFO, 4KX9, 65NS, ASYNCHRONOUS
En stock45047 pcs
Bi-Directional
-
Bulk
7C432
-
-
-
-
No
Yes
No
Depth, Width
65ns
12.5MHz
4K x 9
130mA
Asynchronous
4.5 V ~ 5.5 V
28-PDIP
28-DIP (0.600", 15.24mm)
Through Hole
-40°C ~ 85°C
CY7C
RFQ
7203L15TP
Renesas Electronics America Inc
IC MEM FIFO 2048X9 15NS 28-DIP
En stock10896 pcs
7203L15TP.pdf
Uni-Directional
-
Tube
7203
-
-
-
-
No
Yes
No
Depth, Width
15ns
40MHz
18K (2K x 9)
120mA
Asynchronous
4.5 V ~ 5.5 V
28-PDIP
28-DIP (0.300', 7.62mm)
Through Hole
0°C ~ 70°C
7200
RFQ
7201LA12PDG
Renesas Electronics America Inc
IC MEM FIFO 512X9 12NS 28DIP
En stock10361 pcs
7201LA12PDG.pdf
Uni-Directional
-
Tube
7201
-
-
-
-
No
Yes
No
Depth, Width
12ns
50MHz
4.5K (512 x 9)
80mA
Asynchronous
4.5 V ~ 5.5 V
28-PDIP
28-DIP (0.600', 15.24mm)
Through Hole
0°C ~ 70°C
7200
RFQ
72V2111L20PF8
Renesas Electronics America Inc
IC FIFO SS 512X9 20NS 64QFP
En stock7044 pcs
Uni-Directional
-
Tape & Reel (TR)
72V2111
-
-
-
-
Yes
Yes
Yes
Depth, Width
12ns
50MHz
4.5M (512K x 9)
55mA
Synchronous
3.15 V ~ 3.45 V
64-TQFP (14x14)
64-LQFP
Surface Mount
0°C ~ 70°C
72V
RFQ
SN74ALVC7813-40DLR
Texas Instruments
IC MEMORY FIFO 64X18 56-SSOP
En stock16993 pcs
Uni-Directional
-
Tape & Reel (TR)
74ALVC7813
-
-
-
-
No
No
Yes
Width
20ns
25MHz
1.125K (64 x 18)
40µA
Synchronous
3 V ~ 3.6 V
56-SSOP
56-BSSOP (0.295", 7.50mm Width)
Surface Mount
0°C ~ 70°C
74ALVC
RFQ
CY7C425-30JC
Cypress Semiconductor Corp
FIFO, 1KX9, 30NS, ASYNCHRONOUS
En stock42866 pcs
Uni-Directional
-
Bulk
7C425
-
-
-
-
No
Yes
No
Depth, Width
30ns
25MHz
1K x 9
40mA
Asynchronous
4.5 V ~ 5.5 V
32-PLCC (11.43x13.97)
32-LCC (J-Lead)
Surface Mount
0°C ~ 70°C
CY7C
RFQ
72205LB25PF8
Renesas Electronics America Inc
IC FIFO 256X18 SYNC 25NS 64-TQFP
En stock8913 pcs
72205LB25PF8.pdf
Uni-Directional
-
Tape & Reel (TR)
72205
-
-
-
-
No
No
Yes
Depth, Width
15ns
40MHz
4.5K (256 x 18)
60mA
Synchronous
4.5 V ~ 5.5 V
64-TQFP (14x14)
64-LQFP
Surface Mount
0°C ~ 70°C
7200
RFQ
CY7C4235V-15ASC
Infineon Technologies
IC SYNC FIFO MEM 2KX18 64LQFP
En stock16435 pcs
CY7C4235V-15ASC.pdf
Uni-Directional
-
Bag
7C4235
-
-
-
-
No
Yes
Yes
Depth, Width
11ns
66.7MHz
36K (2K x 18)
30mA
Synchronous
3 V ~ 3.6 V
64-TQFP (10x10)
64-LQFP
Surface Mount
0°C ~ 70°C
CY7C
RFQ
72230L10TP
Renesas Electronics America Inc
IC FIFO 2KX8 SYNC 10NS 28DIP
En stock11705 pcs
72230L10TP.pdf
Uni-Directional
-
Tube
72230
-
-
-
-
No
No
No
Depth, Width
6.5ns
100MHz
16K (2K x 8)
40mA
Synchronous
4.5 V ~ 5.5 V
28-PDIP
28-DIP (0.300', 7.62mm)
Through Hole
0°C ~ 70°C
7200
RFQ
72V825L15PFI
Renesas Electronics America Inc
IC SYNCFIFO 1024X18X2 128-TQFP
En stock10324 pcs
72V825L15PFI.pdf
Bi-Directional
-
Tray
72V825
-
-
-
-
Yes
No
Yes
Depth, Width
10ns
66.7MHz
36K (1K x 18 x 2)
60mA
Synchronous
3 V ~ 3.6 V
128-TQFP (14x20)
128-LQFP
Surface Mount
-40°C ~ 85°C
72V
RFQ
7280L12PA
Renesas Electronics America Inc
IC MEM FIFO 256X9 12NS 56-TSSOP
En stock13100 pcs
7280L12PA.pdf
Uni-Directional
-
Tube
7280
-
-
-
-
No
Yes
No
Depth, Width
12ns
50MHz
4.6K (256 x 9 x 2)
125mA
Asynchronous
4.5 V ~ 5.5 V
56-TSSOP
56-TFSOP (0.240", 6.10mm Width)
Surface Mount
0°C ~ 70°C
7200
RFQ
72V2105L15PFI8
Renesas Electronics America Inc
IC FIFO SUPERSYNCII 15NS 64-TQFP
En stock11688 pcs
72V2105L15PFI8.pdf
Uni-Directional
-
Tape & Reel (TR)
72V2105
-
-
-
-
Yes
Yes
Yes
Depth, Width
10ns
66.7MHz
4.5M (256K x 18)
60mA
Synchronous
3 V ~ 3.6 V
64-TQFP (14x14)
64-LQFP
Surface Mount
-40°C ~ 85°C
72V
RFQ
7200L15J8
Renesas Electronics America Inc
IC MEM FIFO 256X9 15NS 32-PLCC
En stock14002 pcs
7200L15J8.pdf
Uni-Directional
-
Tape & Reel (TR)
7200
-
-
-
-
No
Yes
No
Depth, Width
15ns
40MHz
2.25K (256 x 9)
80mA
Asynchronous
4.5 V ~ 5.5 V
32-PLCC (14x11.46)
32-LCC (J-Lead)
Surface Mount
0°C ~ 70°C
7200
RFQ
IDT7202LA35SO
Renesas Electronics America Inc
IC FIFO ASYNCH 1KX9 35NS 28SOIC
En stock17620 pcs
IDT7202LA35SO.pdf
Uni-Directional
-
Tube
7202
-
-
-
-
No
Yes
No
Depth, Width
35ns
22.2MHz
9K (1K x 9)
80mA
Asynchronous
4.5 V ~ 5.5 V
28-SOIC
28-SOIC (0.345', 8.77mm Width)
Surface Mount
0°C ~ 70°C
7200
RFQ
7283L20PA8
Renesas Electronics America Inc
IC MEM FIFO 2048X9 20NS 56-TSSOP
En stock16418 pcs
Uni-Directional
-
Tape & Reel (TR)
7283
-
-
-
-
No
Yes
No
Depth, Width
20ns
33.3MHz
36K (2K x 9 x 2)
150mA
Asynchronous
4.5 V ~ 5.5 V
56-TSSOP
56-TFSOP (0.240', 6.10mm Width)
Surface Mount
0°C ~ 70°C
7200
RFQ
7204L15P
Renesas Electronics America Inc
IC FIFO ASYNCH 4KX9 15NS 28DIP
En stock7784 pcs
7204L15P.pdf
Uni-Directional
-
Tube
7204
-
-
-
-
No
Yes
No
Depth, Width
15ns
40MHz
36K (4K x 9)
120mA
Asynchronous
4.5 V ~ 5.5 V
28-PDIP
28-DIP (0.600", 15.24mm)
Through Hole
0°C ~ 70°C
7200
RFQ
72245LB10PF
Renesas Electronics America Inc
IC FIFO 1024X18 SYNC 10NS 64QFP
En stock12274 pcs
72245LB10PF.pdf
Uni-Directional
-
Tray
72245
-
-
-
-
No
No
Yes
Depth, Width
6.5ns
100MHz
72K (4K x 18)
60mA
Synchronous
4.5 V ~ 5.5 V
64-TQFP (14x14)
64-LQFP
Surface Mount
0°C ~ 70°C
7200
RFQ
72V275L10TFG
Renesas Electronics America Inc
IC FIFO 32768X18 SYNC 64TQFP
En stock35452 pcs
72V275L10TFG.pdf
Uni-Directional
-
Tray
72V275
-
-
-
-
Yes
Yes
Yes
Depth, Width
6.5ns
100MHz
576K (32K x 18)
60mA
Synchronous
3 V ~ 3.6 V
64-TQFP (10x10)
64-LQFP
Surface Mount
0°C ~ 70°C
72V
RFQ
SN74ALVC3631-15PQ
Texas Instruments
IC 512X36 SYNC FIFO MEM 132-QFP
En stock35241 pcs
Bi-Directional
-
Tray
74ALVC3631
-
-
-
-
No
Yes
Yes
Depth, Width
9.5ns
66.7MHz
18K (512 x 36)
350µA
Synchronous
3 V ~ 3.6 V
132-BQFP (24.13x24.13)
132-BQFP Bumpered
Surface Mount
0°C ~ 70°C
74ALVC
RFQ
72201L15PF
Renesas Electronics America Inc
IC FIFO 256X9 SYNC 15NS 32-TQFP
En stock8058 pcs
72201L15PF.pdf
Uni-Directional
-
Tray
72201
-
-
-
-
No
No
Yes
Depth, Width
10ns
66.7MHz
2.25K (256 x 9)
35mA
Synchronous
4.5 V ~ 5.5 V
32-TQFP (7x7)
32-LQFP
Surface Mount
0°C ~ 70°C
7200
RFQ
CY7C4285V-10ASXC
Cypress Semiconductor
IC DEEP SYN FIFO 64KX18 64LQFP
En stock30178 pcs
CY7C4285V-10ASXC.pdf
Uni-Directional
CY7C4285V10ASXC
-
-
3 (168 Hours)
Lead free / RoHS Compliant
7C4285
Tray
No
Yes
Yes
Depth, Width
8ns
100MHz
1.125M (64K x 18)
30mA
Synchronous
3V ~ 3.6V
64-TQFP (14x14)
64-LQFP
Surface Mount
0°C ~ 70°C
CY7C
RFQ
7201LA25PI
Renesas Electronics America Inc
IC MEM FIFO 512X9 25NS 28DIP
En stock6140 pcs
7201LA25PI.pdf
Uni-Directional
-
Tube
7201
-
-
-
-
No
Yes
No
Depth, Width
25ns
28.5MHz
4.5K (512 x 9)
80mA
Asynchronous
4.5 V ~ 5.5 V
28-PDIP
28-DIP (0.600', 15.24mm)
Through Hole
-40°C ~ 85°C
7200
RFQ
72V241L15PF8
Renesas Electronics America Inc
IC FIFO SYNC 4KX9 15NS 32QFP
En stock15392 pcs
72V241L15PF8.pdf
Uni-Directional
-
Tape & Reel (TR)
72V241
-
-
-
-
No
No
Yes
Depth, Width
10ns
66.7MHz
36K (4K x 9)
20mA
Synchronous
3 V ~ 3.6 V
32-TQFP (7x7)
32-LQFP
Surface Mount
0°C ~ 70°C
72V
RFQ
CY7C421-20JXC
Cypress Semiconductor Corp
FIFO, 512X9, 20NS, ASYNCHRONOUS,
En stock6279 pcs
CY7C421-20JXC.pdf
Uni-Directional
-
Tube
7C421
-
-
-
-
No
Yes
No
Depth, Width
20ns
50MHz
4.5K (512 x 9)
55mA
Asynchronous
4.5 V ~ 5.5 V
32-PLCC (11.43x13.97)
32-LCC (J-Lead)
Surface Mount
0°C ~ 70°C
CY7C
RFQ
CY7C4285V-15ASXI
Infineon Technologies
IC DEEP SYN FIFO 64KX18 64LQFP
En stock12340 pcs
CY7C4285V-15ASXI.pdf
Uni-Directional
-
Tube
7C4285
-
-
-
-
No
Yes
Yes
Depth, Width
10ns
66.7MHz
1.125M (64K x 18)
35mA
Synchronous
3 V ~ 3.6 V
64-TQFP (14x14)
64-LQFP
Surface Mount
-40°C ~ 85°C
CY7C
RFQ
CY7C4251-15JXCT
Infineon Technologies
IC SYNC FIFO MEM 8KX9 32-PLCC
En stock3739 pcs
CY7C4251-15JXCT.pdf
Uni-Directional
-
Tape & Reel (TR)
7C4251
-
-
-
-
No
No
Yes
Depth, Width
10ns
66.7MHz
72K (8K x 9)
35mA
Synchronous
4.5 V ~ 5.5 V
32-PLCC (11.43x13.97)
32-LCC (J-Lead)
Surface Mount
0°C ~ 70°C
CY7C
RFQ
72821L15PF8
Renesas Electronics America Inc
IC FIFO SYNC 1KX9 15NS 64QFP
En stock14733 pcs
Bi-Directional
-
Tape & Reel (TR)
72821
-
-
-
-
No
No
Yes
Depth, Width
10ns
66.7MHz
18K (1K x 9 x 2)
60mA
Synchronous
4.5 V ~ 5.5 V
64-TQFP (14x14)
64-LQFP
Surface Mount
0°C ~ 70°C
7200
RFQ
AM7201-25JC
Advanced Micro Devices
FIFO, 512X9, 25NS, ASYNCHRONOUS
En stock5197 pcs
Uni-Directional
-
Bulk
AM7201
-
-
-
-
No
Yes
No
Depth, Width
25ns
28.5MHz
512 x 9
70mA
Asynchronous
4.5 V ~ 5.5 V
32-PLCC (13.97x11.43)
32-LCC (J-Lead)
Surface Mount
0°C ~ 70°C
-
RFQ
7206L35J8
Renesas Electronics America Inc
IC FIFO 8192X18 35NS 32PLCC
En stock12093 pcs
7206L35J8.pdf
Uni-Directional
-
Tape & Reel (TR)
7206
-
-
-
-
No
Yes
No
Depth, Width
35ns
22.22MHz
144K (16K x 9)
120mA
Asynchronous
4.5 V ~ 5.5 V
32-PLCC (14x11.46)
32-LCC (J-Lead)
Surface Mount
0°C ~ 70°C
7200
RFQ
7208L25J
Renesas Electronics America Inc
IC FIFO 64KX9 25NS 32PLCC
En stock6957 pcs
7208L25J.pdf
Uni-Directional
-
Tube
7208
-
-
-
-
No
Yes
No
Depth, Width
25ns
28.5MHz
576K (64K x 9)
120mA
Asynchronous
4.5 V ~ 5.5 V
32-PLCC (14x11.46)
32-LCC (J-Lead)
Surface Mount
0°C ~ 70°C
7200
RFQ
72V01L25J
Renesas Electronics America Inc
IC ASYNCH 512X9 25NS 32-PLCC
En stock8062 pcs
72V01L25J.pdf
Uni-Directional
-
Tube
72V01
-
-
-
-
No
Yes
No
Depth, Width
25ns
28.5MHz
4.5K (512 x 9)
60mA
Asynchronous
3 V ~ 3.6 V
32-PLCC (14x11.46)
32-LCC (J-Lead)
Surface Mount
0°C ~ 70°C
72V
RFQ
72V285L10TF8
Renesas Electronics America Inc
IC FIFO SS 65536X18 10NS 64STQFP
En stock17790 pcs
72V285L10TF8.pdf
Uni-Directional
-
Tape & Reel (TR)
72V285
-
-
-
-
Yes
Yes
Yes
Depth, Width
6.5ns
100MHz
1.125M (64K x 18)
60mA
Synchronous
3 V ~ 3.6 V
64-TQFP (10x10)
64-LQFP
Surface Mount
0°C ~ 70°C
72V
RFQ
IDT72V3682L15PF
Renesas Electronics America Inc
IC FIFO 32768X36 15NS 120QFP
En stock9477 pcs
IDT72V3682L15PF.pdf
Bi-Directional
-
Tray
72V3682
-
-
-
-
Yes
No
Yes
Width
10ns
66.7MHz
1.125M (16K x 36 x 2)
400mA
Synchronous
3.15 V ~ 3.45 V
120-TQFP (14x14)
120-LQFP
Surface Mount
0°C ~ 70°C
72V
RFQ
QS7203-50V
Quality Semiconductor
FIFO, 2KX9, 50NS, ASYNCHRONOUS
En stock2352 pcs
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RFQ
72V801L10PFG8
Renesas Electronics America Inc
IC SYNC FIFO 256X9 10NS 64QFP
En stock42157 pcs
72V801L10PFG8.pdf
Bi-Directional
-
Tape & Reel (TR)
72V801
-
-
-
-
No
No
Yes
Depth, Width
6.5ns
100MHz
4.6K (256 x 9 x 2)
40mA
Synchronous
3 V ~ 3.6 V
64-TQFP (14x14)
64-LQFP
Surface Mount
0°C ~ 70°C
72V
RFQ
72V3632L15PFGI8
Renesas Electronics America Inc
IC FIFO 512X36X2 SYNC 120TQFP
En stock39699 pcs
72V3632L15PFGI8.pdf
Bi-Directional
-
Tape & Reel (TR)
72V3632
-
-
-
-
Yes
No
Yes
Width
10ns
66.7MHz
36K (512 x 36 x 2)
400mA
Synchronous
3 V ~ 3.6 V
120-TQFP (14x14)
120-LQFP
Surface Mount
0°C ~ 70°C
72V
RFQ
72T7285L5BB
Renesas Electronics America Inc
IC FIFO 16384X72 5NS 324-BGA
En stock34119 pcs
72T7285L5BB.pdf
Uni-Directional
-
Tray
72T7285
-
-
-
-
Yes
Yes
Yes
Depth, Width
10ns, 3.6ns
83MHz, 200MHz
1.125M (16K x 72)
130mA
Asynchronous, Synchronous
2.375 V ~ 2.625 V
324-PBGA (19x19)
324-BGA
Surface Mount
0°C ~ 70°C
72T
RFQ
72T36135ML6BB
Renesas Electronics America Inc
IC FIFO 1MX18 6NS 240BGA
En stock37021 pcs
Uni-Directional
-
Tray
72T36135
-
-
-
-
Yes
Yes
Yes
Depth, Width
12ns, 3.8ns
66MHz, 166MHz
18M (512K x 36)
180mA
Asynchronous, Synchronous
2.375 V ~ 2.625 V
240-PBGA (19x19)
240-BGA
Surface Mount
0°C ~ 70°C
72T
RFQ
IDT7202LA15SOI8
Renesas Electronics America Inc
IC FIFO ASYNCH 1KX9 15NS 28SOIC
En stock12942 pcs
IDT7202LA15SOI8.pdf
Uni-Directional
-
Tape & Reel (TR)
7202
-
-
-
-
No
Yes
No
Depth, Width
15ns
40MHz
9K (1K x 9)
80mA
Asynchronous
4.5 V ~ 5.5 V
28-SOIC
28-SOIC (0.345", 8.77mm Width)
Surface Mount
-40°C ~ 85°C
7200
RFQ
72211L15PFG
Renesas Electronics America Inc
IC SRAM
En stock13641 pcs
Uni-Directional
-
Tray
-
-
-
-
-
No
No
Yes
Depth, Width
10ns
66.7MHz
512 x 9
35mA
Asynchronous, Synchronous
4.5 V ~ 5.5 V
32-TQFP (7x7)
32-LQFP
Surface Mount
0°C ~ 70°C
7200
RFQ
72210LA10TP
Renesas Electronics America Inc
IC SRAM
En stock14622 pcs
-
-
Tray
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RFQ
72T1865L5BBGI
Renesas Electronics America Inc
IC FIFO 8192X18 5NS 144BGA
En stock13268 pcs
72T1865L5BBGI.pdf
Uni-Directional
-
Tray
72T1865
-
-
-
-
Yes
Yes
Yes
Depth, Width
3.6ns
200MHz
144K (8K x 18)(16K x 9)
60mA
Synchronous
2.375 V ~ 2.625 V
144-PBGA (13x13)
144-BGA
Surface Mount
-40°C ~ 85°C
72T
RFQ
723651L20PQF
Renesas Electronics America Inc
IC FIFO SYNC 2048X36 132QFP
En stock5519 pcs
723651L20PQF.pdf
Bi-Directional
-
Tray
723651
-
-
-
-
Yes
Yes
Yes
Depth, Width
13ns
50MHz
72K (2K x 36)
400µA
Synchronous
4.5 V ~ 5.5 V
132-PQFP (24.13x24.13)
132-BQFP Bumpered
Surface Mount
0°C ~ 70°C
7200
RFQ
72T72105L5BBGI
Renesas Electronics America Inc
IC FIFO 65536X72 4-4NS 324BGA
En stock36995 pcs
72T72105L5BBGI.pdf
Uni-Directional
-
Tray
72T72105
-
-
-
-
Yes
Yes
Yes
Depth, Width
10ns, 3.6ns
83MHz, 200MHz
4.5M (64K x 72)
130mA
Asynchronous, Synchronous
2.375 V ~ 2.625 V
324-PBGA (19x19)
324-BGA
Surface Mount
-40°C ~ 85°C
72T
RFQ
7202LA30LB8
Renesas Electronics America Inc
IC MEM FIFO 1024X9 ASYNC 32LCC
En stock16770 pcs
7202LA30LB8.pdf
Uni-Directional
-
Tape & Reel (TR)
7202
-
-
-
-
No
Yes
No
Depth, Width
30ns
25MHz
9K (1K x 9)
100mA
Asynchronous
4.5 V ~ 5.5 V
32-LCC (11.43x13.97)
32-CLCC
Surface Mount
-55°C ~ 125°C
7200
RFQ