SN74LVC1G132DBVT
Texas Instruments
IC GATE NAND 1CH 2-INP SOT23-5
Σε απόθεμα48240 pcs
2
10 µA
NAND Gate
-
32mA, 32mA
5ns @ 5V, 50pF
74LVC1G132
1.16V ~ 3.33V
0.39V ~ 1.87V
Tape & Reel (TR)
-
74LVC
-40°C ~ 125°C
Surface Mount
-
Schmitt Trigger
SC-74A, SOT-753
SOT-23-5
1
-
1.65V ~ 5.5V
RFQ
74LS28PC
Texas Instruments
NOR GATE
Σε απόθεμα124500 pcs
-
-
-
-
-
-
74LS28
-
-
Bulk
-
-
-
-
-
-
-
-
-
-
-
RFQ
SN74LVC1G06DBVR
Texas Instruments
IC BUFFER INVERT 5.5V SOT23-5
Σε απόθεμα378150 pcs
-
-
Buffer, Inverting
1
-, 32mA
-
74LVC1G06
-
-
Tape & Reel (TR)
-
74LVC
-40°C ~ 125°C
Surface Mount
Open Drain
-
SC-74A, SOT-753
SOT-23-5
-
1
1.65V ~ 5.5V
RFQ
74LCX14SJX
Fairchild Semiconductor
IC INVERT SCHMITT 6CH 1-IN 14SOP
Σε απόθεμα105580 pcs
1
10 µA
Inverter
-
24mA, 24mA
6.5ns @ 3.3V, 50pF
74LCX14
1.7V ~ 2.2V
1.1V ~ 1.5V
Bulk
-
74LCX
-40°C ~ 85°C
Surface Mount
-
Schmitt Trigger Input
14-SOIC (0.209", 5.30mm Width)
14-SOP
6
-
2V ~ 3.6V
RFQ
MC74AC02DTR2G
onsemi
IC GATE NOR 4CH 2-INP 14TSSOP
Σε απόθεμα171970 pcs
2
4 µA
NOR Gate
-
24mA, 24mA
6.5ns @ 5V, 50pF
74AC02
2.1V ~ 3.85V
0.9V ~ 1.65V
Tape & Reel (TR)
-
74AC
-40°C ~ 85°C
Surface Mount
-
-
14-TSSOP (0.173', 4.40mm Width)
14-TSSOP
4
-
2V ~ 6V
RFQ
SN74HC04N
Texas Instruments
IC INVERTER 6CH 1-INP 14DIP
Σε απόθεμα175430 pcs
1
2 µA
Inverter
-
5.2mA, 5.2mA
16ns @ 6V, 50pF
74HC04
1.5V ~ 4.2V
0.5V ~ 1.8V
Tube
-
74HC
-40°C ~ 85°C
Through Hole
-
-
14-DIP (0.300', 7.62mm)
14-PDIP
6
-
2V ~ 6V
RFQ
SN74ALS08N
Texas Instruments
IC GATE AND 4CH 2-INP 14DIP
Σε απόθεμα130350 pcs
2
-
AND Gate
-
400µA, 8mA
14ns @ 5V, 50pF
74ALS08
2V
0.8V
Tube
-
74ALS
0°C ~ 70°C
Through Hole
-
-
14-DIP (0.300', 7.62mm)
14-PDIP
4
-
4.5V ~ 5.5V
RFQ
74LCX02MX
onsemi
IC GATE NOR 4CH 2-INP 14SOIC
Σε απόθεμα6610 pcs
2
10 µA
NOR Gate
-
24mA, 24mA
5.2ns @ 3.3V, 50pF
74LCX02
1.7V ~ 2V
0.7V ~ 0.8V
Tape & Reel (TR)
-
74LCX
-40°C ~ 85°C
Surface Mount
-
-
14-SOIC (0.154", 3.90mm Width)
14-SOIC
4
-
2V ~ 3.6V
RFQ
SN74AHCT14NS
Texas Instruments
IC HEX SCHMITT-TRIG INV 14SO
Σε απόθεμα494900 pcs
-
-
-
-
-
-
74AHCT14
-
-
Bulk
-
*
-
-
-
-
-
-
-
-
-
RFQ
SN74LVC2G08MDCUREP
Texas Instruments
IC GATE AND 2CH 2-INP 8VSSOP
Σε απόθεμα30804 pcs
2
10 µA
AND Gate
-
24mA, 24mA
4.8ns @ 5V, 50pF
74LVC2G08
1.7V ~ 2V
0.7V ~ 0.8V
Tape & Reel (TR)
-
74LVC
-55°C ~ 125°C
Surface Mount
-
-
8-VFSOP (0.091', 2.30mm Width)
8-VSSOP
2
-
1.65V ~ 5.5V
RFQ
SN74HC14ANSR
Texas Instruments
IC INVERT SCHMITT 6CH 1-INP 14SO
Σε απόθεμα72940 pcs
1
2 µA
Inverter
-
5.2mA, 5.2mA
19ns @ 6V, 50pF
74HC14
1.9V ~ 5.9V
0.1V ~ 0.26V
Tape & Reel (TR)
-
74HC
-40°C ~ 85°C
Surface Mount
-
Schmitt Trigger
14-SOIC (0.209", 5.30mm Width)
14-SO
6
-
2V ~ 6V
RFQ
74HC00DTR2G
onsemi
IC GATE NAND 4CH 2-INP 14TSSOP
Σε απόθεμα16850 pcs
2
2 µA
NAND Gate
-
5.2mA, 5.2mA
13ns @ 6V, 50pF
74HC00
1.5V ~ 4.2V
0.5V ~ 1.8V
Tape & Reel (TR)
-
74HC
-55°C ~ 125°C
Surface Mount
-
-
14-TSSOP (0.173", 4.40mm Width)
14-TSSOP
4
-
2V ~ 6V
RFQ
SN7400DR
Texas Instruments
IC GATE NAND 4CH 2-INP 14SOIC
Σε απόθεμα12870 pcs
2
-
NAND Gate
-
400µA, 16mA
22ns @ 5V, 15pF
SN7400
2V
0.8V
Tape & Reel (TR)
-
7400
0°C ~ 70°C
Surface Mount
-
-
14-SOIC (0.154", 3.90mm Width)
14-SOIC
4
-
4.75V ~ 5.25V
RFQ
NLVVHC1G32DFT2
onsemi
IC GATE OR SGL CMOS 2INP SC-88A
Σε απόθεμα11470 pcs
2
1 µA
OR Gate
-
8mA, 8mA
7.5ns @ 5V, 50pF
NLVVHC1
1.5V ~ 3.85V
0.5V ~ 1.65V
Tape & Reel (TR)
-
Automotive, AEC-Q100, 74VHC
-55°C ~ 125°C
Surface Mount
-
-
5-TSSOP, SC-70-5, SOT-353
SC-88A (SC-70-5/SOT-353)
1
-
2V ~ 5.5V
RFQ
CD74HCT132M96
Texas Instruments
IC GATE NAND 4CH 2-INP 14SOIC
Σε απόθεμα173850 pcs
2
2 µA
NAND Gate
-
4mA, 4mA
33ns @ 4.5V, 50pF
74HCT132
1.9V ~ 2.1V
0.5V ~ 0.6V
Tape & Reel (TR)
-
74HCT
-55°C ~ 125°C
Surface Mount
-
Schmitt Trigger
14-SOIC (0.154', 3.90mm Width)
14-SOIC
4
-
4.5V ~ 5.5V
RFQ
SN74AHC1G86DBVRG4
Texas Instruments
IC GATE XOR 1CH 2-INP SOT23-5
Σε απόθεμα11230 pcs
2
1 µA
XOR (Exclusive OR)
-
8mA, 8mA
8.8ns @ 5V, 50pF
74AHC1G86
1.5V ~ 3.85V
0.5V ~ 1.65V
Tape & Reel (TR)
-
74AHC
-40°C ~ 85°C
Surface Mount
-
Schmitt Trigger Input
SC-74A, SOT-753
SOT-23-5
1
-
2V ~ 5.5V
RFQ
NL17SZ04DFT2
onsemi
IC INVERTER SINGLE SOT353
Σε απόθεμα7730 pcs
1
1 µA
Inverter
-
32mA, 32mA
4.3ns @ 5V, 50pF
17SZ04
-
-
Bulk
-
17SZ
-55°C ~ 125°C
Surface Mount
-
-
5-TSSOP, SC-70-5, SOT-353
SC-88A (SC-70-5/SOT-353)
1
-
1.65V ~ 5.5V
RFQ
74V1G14STR
STMicroelectronics
IC INVERTER 1CH 1-INP SOT23-5
Σε απόθεμα10140 pcs
1
1 µA
Inverter
-
8mA, 8mA
8ns @ 5V, 50pF
74V1G14
2.2V ~ 3.85V
0.9V ~ 1.65V
Tape & Reel (TR)
-
74V
-55°C ~ 125°C
Surface Mount
-
Schmitt Trigger
SC-74A, SOT-753
SOT-23-5
1
-
2V ~ 5.5V
RFQ
SN74HCT02PWR
Texas Instruments
IC GATE NOR 4CH 2-INP 14TSSOP
Σε απόθεμα391000 pcs
2
2 µA
NOR Gate
-
4mA, 4mA
18ns @ 5.5V, 50pF
74HCT02
2V
0.8V
Tape & Reel (TR)
-
74HCT
-40°C ~ 85°C
Surface Mount
-
-
14-TSSOP (0.173", 4.40mm Width)
14-TSSOP
4
-
4.5V ~ 5.5V
RFQ
MC74HCT14ADT
onsemi
IC GATE 4CH 2-INP 14TSSOP
Σε απόθεμα296650 pcs
2
1 µA
Inverter
-
4mA, 4mA
32ns @ 5V, 50pF
74HCT14
1.9V ~ 2.1V
0.5V ~ 0.6V
Bulk
-
74HCT
-55°C ~ 125°C
Surface Mount
-
Schmitt Trigger
14-TSSOP (0.173", 4.40mm Width)
14-TSSOP
4
-
4.5V ~ 5.5V
RFQ
M74VHC1GT14DFT1G
onsemi
IC INVERT SCHMITT 1CH 1-IN SC88A
Σε απόθεμα106890 pcs
1
1 µA
Inverter
-
8mA, 8mA
10.6ns @ 5V, 50pF
74VHC1GT14
1.6V ~ 2.1V
0.35V ~ 0.6V
Tape & Reel (TR)
-
74VHC
-55°C ~ 125°C
Surface Mount
-
Schmitt Trigger
5-TSSOP, SC-70-5, SOT-353
SC-88A (SC-70-5/SOT-353)
1
-
2V ~ 5.5V
RFQ
SN74LVC1G04QDCKRQ1
Texas Instruments
IC INVERTER 1CH 1-INP SC70-5
Σε απόθεμα197510 pcs
1
10 µA
Inverter
-
32mA, 32mA
3.7ns @ 5V, 50pF
74LVC1G04
1.7V ~ 2V
0.7V ~ 0.8V
Tape & Reel (TR)
-
Automotive, AEC-Q100, 74LVC
-40°C ~ 125°C
Surface Mount
-
-
5-TSSOP, SC-70-5, SOT-353
SC-70-5
1
-
1.65V ~ 5.5V
RFQ
MC74LCX06DTR2G
onsemi
IC INVERTER OD 6CH 1-INP 14TSSOP
Σε απόθεμα194620 pcs
1
10 µA
Inverter
-
-, 24mA
3.7ns @ 3.3V, 50pF
74LCX06
1.7V ~ 2V
0.7V ~ 0.8V
Tape & Reel (TR)
-
74LCX
-40°C ~ 85°C
Surface Mount
-
Open Drain
14-TSSOP (0.173', 4.40mm Width)
14-TSSOP
6
-
2V ~ 3.6V
RFQ
MM74C14N
onsemi
IC INVERT SCHMITT 6CH 1-IN 14DIP
Σε απόθεμα14350 pcs
1
-
Inverter
-
8mA, 8mA
200ns @ 10V, 50pF
74C14
4.3V ~ 12.9V
0.7V ~ 2.1V
Tube
-
74C
-55°C ~ 125°C
Through Hole
-
Schmitt Trigger
14-DIP (0.300", 7.62mm)
14-MDIP
6
-
3V ~ 15V
RFQ
SN74AUP2G02YFPR
Texas Instruments
IC GATE NOR 2CH 2-INP 8DSBGA
Σε απόθεμα107300 pcs
2
500 nA
NOR Gate
-
4mA, 4mA
6.2ns @ 3.3V, 30pF
74AUP2G02
1.6V ~ 2V
0.7V ~ 0.9V
Tape & Reel (TR)
-
74AUP
-40°C ~ 85°C
Surface Mount
-
-
8-XFBGA, DSBGA
8-DSBGA
2
-
0.8V ~ 3.6V
RFQ
NC7ST02M5X
onsemi
IC GATE NOR 1CH 2-INP SOT23-5
Σε απόθεμα117170 pcs
2
1 µA
NOR Gate
-
2mA, 2mA
26ns @ 5.5V, 50pF
7ST02
2V
0.8V
Tape & Reel (TR)
-
7ST
-40°C ~ 85°C
Surface Mount
-
-
SC-74A, SOT-753
SOT-23-5
1
-
4.5V ~ 5.5V
RFQ
74LVC1G14GV,125
Nexperia USA Inc.
IC INVERT SCHMITT 1CH 1-IN SC74A
Σε απόθεμα400400 pcs
1
4 µA
Inverter
-
32mA, 32mA
5ns @ 5V, 50pF
74LVC1G14
1.14V ~ 2.79V
0.46V ~ 1.58V
Tape & Reel (TR)
-
74LVC
-40°C ~ 125°C
Surface Mount
-
Schmitt Trigger
SC-74A, SOT-753
SC-74A
1
-
1.65V ~ 5.5V
RFQ
MC74VHC1G14DFT2
onsemi
IC INVERT SCHMITT 1CH 1-IN SC88A
Σε απόθεμα5410 pcs
1
1 µA
Inverter
-
8mA, 8mA
10.6ns @ 5V, 50pF
74VHC1G14
2.2V ~ 3.85V
0.9V ~ 1.65V
Tape & Reel (TR)
-
74VHC
-55°C ~ 125°C
Surface Mount
-
Schmitt Trigger
5-TSSOP, SC-70-5, SOT-353
SC-88A (SC-70-5/SOT-353)
1
-
2V ~ 5.5V
RFQ
74VHCT00AMTCX
Fairchild Semiconductor
NAND GATE, AHCT/VHCT SERIES, 4-F
Σε απόθεμα263060 pcs
2
2 µA
NAND Gate
-
8mA, 8mA
7.9ns @ 5V, 50pF
74VHCT00
2V
0.8V
Bulk
-
74VHCT
-40°C ~ 85°C
Surface Mount
-
-
14-TSSOP (0.173", 4.40mm Width)
14-TSSOP
4
-
4.5V ~ 5.5V
RFQ
SN74AHC1G08DBVR
Texas Instruments
IC GATE AND 1CH 2-INP SOT23-5
Σε απόθεμα395300 pcs
2
1 µA
AND Gate
-
8mA, 8mA
7.9ns @ 5V, 50pF
74AHC1G08
1.5V ~ 3.85V
0.5V ~ 1.65V
Tape & Reel (TR)
-
74AHC
-55°C ~ 125°C
Surface Mount
-
-
SC-74A, SOT-753
SOT-23-5
1
-
2V ~ 5.5V
RFQ
SN74AS02D
Texas Instruments
IC GATE NOR 4CH 2-INP 14SOIC
Σε απόθεμα32535 pcs
2
-
NOR Gate
-
2mA, 20mA
4.5ns @ 5V, 50pF
74AS02
2V
0.8V
Tube
-
74AS
0°C ~ 70°C
Surface Mount
-
-
14-SOIC (0.154", 3.90mm Width)
14-SOIC
4
-
4.5V ~ 5.5V
RFQ
MC10H104FNR2
onsemi
IC GATE AND 4CH 2-INP 20PLCC
Σε απόθεμα17070 pcs
2
-
AND Gate
-
50mA, 50mA
1.75ns @ -5.2V, -
MC10H104
-1.13V
-1.48V
Tape & Reel (TR)
-
10H
0°C ~ 75°C
Surface Mount
-
1 of 4 AND/NAND Output
20-LCC (J-Lead)
20-PLCC (9x9)
4
-
-4.94V ~ -5.46V
RFQ
CD4030CN
onsemi
IC GATE XOR 4CH 2-INP 14DIP
Σε απόθεμα9460 pcs
2
1 µA
XOR (Exclusive OR)
-
-
150ns @ 10V, 15pF
CD4030
-
-
Tube
-
4000
-55°C ~ 125°C
Through Hole
-
-
14-DIP (0.300', 7.62mm)
14-MDIP
4
-
3V ~ 15V
RFQ
MC74F132N
onsemi
NAND GATE, F/FAST SERIES, 4 FUNC
Σε απόθεμα403570 pcs
-
-
-
-
-
-
74F132
-
-
Bulk
-
*
-
-
-
-
-
-
-
-
-
RFQ
SN74AHC14PWR
Texas Instruments
IC INVERTER 6CH 1-INP 14TSSOP
Σε απόθεμα268950 pcs
1
2 µA
Inverter
-
8mA, 8mA
10.6ns @ 5V, 50pF
74AHC14
2.2V ~ 3.85V
0.9V ~ 1.65V
Tape & Reel (TR)
-
74AHC
-40°C ~ 125°C
Surface Mount
-
Schmitt Trigger
14-TSSOP (0.173", 4.40mm Width)
14-TSSOP
6
-
2V ~ 5.5V
RFQ
DM74AS04M
Fairchild Semiconductor
IC INVERTER 6CH 1-INP 14SOIC
Σε απόθεμα283290 pcs
1
-
Inverter
-
2mA, 20mA
5ns @ 5V, 50pF
74AS04
2V
0.8V
Tube
-
74AS
0°C ~ 70°C
Surface Mount
-
-
14-SOIC (0.154", 3.90mm Width)
14-SOIC
6
-
4.5V ~ 5.5V
RFQ
SN74AUP1T02DCKR
Texas Instruments
IC NOR GATE 1CH 2IN SC70
Σε απόθεμα299920 pcs
2
500 nA
NOR Gate
-
4mA, 4mA
4.4ns @ 3.3V, 30pF
74AUP1T02
1.1V ~ 1.19V
0.35V ~ 0.5V
Tape & Reel (TR)
-
74AUP
-40°C ~ 85°C
Surface Mount
-
-
5-TSSOP, SC-70-5, SOT-353
SC-70-5
1
-
2.3V ~ 3.6V
RFQ
74LCX32SJX
onsemi
IC GATE OR 4CH 2-INP 14SOP
Σε απόθεμα13900 pcs
2
10 µA
OR Gate
-
24mA, 24mA
5.5ns @ 3.3V, 50pF
74LCX32
1.7V ~ 2V
0.7V ~ 0.8V
Tape & Reel (TR)
-
74LCX
-40°C ~ 85°C
Surface Mount
-
-
14-SOIC (0.209', 5.30mm Width)
14-SOP
4
-
2V ~ 3.6V
RFQ
SNJ54LS04W
Texas Instruments
IC INVERTER 6CH 1-INP 14CFP
Σε απόθεμα13890 pcs
1
6.6 mA
Inverter
-
400µA, 4mA
15ns @ 5V, 15pF
54LS04
2V
0.7V
Bulk
-
54LS
-55°C ~ 125°C
Surface Mount
-
-
14-CFlatPack
14-CFP
6
-
4.5V ~ 5.5V
RFQ
MM74HC00MTCX
onsemi
IC GATE NAND 4CH 2-INP 14TSSOP
Σε απόθεμα219130 pcs
2
2 µA
NAND Gate
-
5.2mA, 5.2mA
15ns @ 6V, 50pF
74HC00
1.5V ~ 4.2V
0.5V ~ 1.8V
Tape & Reel (TR)
-
74HC
-40°C ~ 85°C
Surface Mount
-
-
14-TSSOP (0.173", 4.40mm Width)
14-TSSOP
4
-
2V ~ 6V
RFQ
7410PC
Texas Instruments
NAND GATE, 74 SERIES TTL
Σε απόθεμα131950 pcs
3
16.5 mA
NAND Gate
-
-
-
7410
-
-
Bulk
-
-
0°C ~ 70°C
Through Hole
-
-
14-DIP (0.300", 7.62mm)
14-PDIP
3
-
4.75V ~ 5.25V
RFQ
MM74HCT14N
Fairchild Semiconductor
IC INVERT SCHMITT 6CH 1-IN 14DIP
Σε απόθεμα135560 pcs
1
1 µA
Inverter
-
4.8mA, 4.8mA
20ns @ 5V, 50pF
74HCT14
1.9V ~ 2.1V
0.5V ~ 0.6V
Tube
-
74HCT
-40°C ~ 85°C
Through Hole
-
Schmitt Trigger
14-DIP (0.300", 7.62mm)
14-DIP
6
-
4.5V ~ 5.5V
RFQ
SN74LVC3G04DCUR
Texas Instruments
IC INVERTER 3CH 3-INP 8VSSOP
Σε απόθεμα139340 pcs
3
10 µA
Inverter
-
32mA, 32mA
3.2ns @ 5V, 50pF
74LVC3G04
1.7V ~ 2V
0.7V ~ 0.8V
Tape & Reel (TR)
-
74LVC
-40°C ~ 125°C
Surface Mount
-
-
8-VFSOP (0.091', 2.30mm Width)
8-VSSOP
3
-
1.65V ~ 5.5V
RFQ
MC74VHC1G02DFT2G
onsemi
IC GATE NOR 1CH 2-INP SC88A
Σε απόθεμα153410 pcs
2
1 µA
NOR Gate
-
8mA, 8mA
7.5ns @ 5V, 50pF
74VHC1G02
1.5V ~ 3.85V
0.5V ~ 1.65V
Tape & Reel (TR)
-
74VHC
-55°C ~ 125°C
Surface Mount
-
-
5-TSSOP, SC-70-5, SOT-353
SC-88A (SC-70-5/SOT-353)
1
-
2V ~ 5.5V
RFQ
SN54F00J
Texas Instruments
54F00 QUADRUPLE 2-INPUT POSITIVE
Σε απόθεμα17710 pcs
-
-
-
-
-
-
54F00
-
-
Bulk
-
*
-
-
-
-
-
-
-
-
-
RFQ
74V2G05STR
STMicroelectronics
IC INVERTER OD 3CH 3-INP SOT23-8
Σε απόθεμα13650 pcs
3
1 µA
Inverter
-
-, 8mA
7.5ns @ 5V, 50pF
74V2G05
1.5V
0.5V
Tape & Reel (TR)
-
74V
-55°C ~ 125°C
Surface Mount
-
Open Drain
SOT-23-8
SOT-23-8
3
-
2V ~ 5.5V
RFQ
SN74LVC04ADR
Texas Instruments
IC INVERTER 6CH 1-INP 14SOIC
Σε απόθεμα232160 pcs
1
1 µA
Inverter
-
24mA, 24mA
4.3ns @ 3.3V, 50pF
74LVC04
1.7V ~ 2V
0.7V ~ 0.8V
Tape & Reel (TR)
-
74LVC
-40°C ~ 125°C
Surface Mount
-
-
14-SOIC (0.154", 3.90mm Width)
14-SOIC
6
-
1.65V ~ 3.6V
RFQ
74VHC08MTCX
onsemi
IC GATE AND 4CH 2-INP 14TSSOP
Σε απόθεμα197280 pcs
2
2 µA
AND Gate
-
8mA, 8mA
7.9ns @ 5V, 50pF
74VHC08
1.5V
0.5V
Tape & Reel (TR)
-
74VHC
-40°C ~ 85°C
Surface Mount
-
-
14-TSSOP (0.173', 4.40mm Width)
14-TSSOP
4
-
2V ~ 5.5V
RFQ
MC74HC1G02DFT1G
onsemi
IC GATE NOR 1CH 2-INP SC88A
Σε απόθεμα6310 pcs
2
1 µA
NOR Gate
-
2.6mA, 2.6mA
17ns @ 6V, 50pF
74HC1G02
1.5V ~ 4.2V
0.5V ~ 1.8V
Tape & Reel (TR)
-
74HC
-55°C ~ 125°C
Surface Mount
-
-
5-TSSOP, SC-70-5, SOT-353
SC-88A (SC-70-5/SOT-353)
1
-
2V ~ 6V
RFQ
MC14011BCPG
onsemi
IC GATE NAND 4CH 2-INP 14DIP
Σε απόθεμα16460 pcs
2
1 µA
NAND Gate
-
8.8mA, 8.8mA
80ns @ 15V, 50pF
MC14011
3.5V ~ 11V
1.5V ~ 4V
Tube
-
4000B
-55°C ~ 125°C
Through Hole
-
-
14-DIP (0.300', 7.62mm)
14-PDIP
4
-
3V ~ 18V
RFQ