SN74LV4052AN
Texas Instruments
IC SWITCH SP4T X 2 75OHM 16DIP
I roto i te taonga127110 pcs
14ns, 14ns
-
0.5pF, 13.1pF
100nA
-45dB @ 1MHz
-
700mOhm
74LV4052
Tube
2V ~ 5.5V
75Ohm
SP4T
4:1
50MHz
2
16-PDIP
16-DIP (0.300', 7.62mm)
Through Hole
-40°C ~ 85°C (TA)
-
RFQ
ISL43840IRZ-T
Renesas Electronics America Inc
IC SWITCH SP4T X 2 50OHM 20QFN
I roto i te taonga17710 pcs
50ns, 35ns
0.3pC
3pF, 12pF
100pA
-105dB @ 100kHz
±2V ~ 6V
1.3Ohm
ISL43840
Tape & Reel (TR)
2.7V ~ 12V
50Ohm
SP4T
4:1
-
2
20-QFN (4x4)
20-VFQFN Exposed Pad
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
DG419CY
Analog Devices Inc./Maxim Integrated
IC SWITCH SPDT X 1 35OHM 8SOIC
I roto i te taonga9340 pcs
175ns, 145ns
3pC
8pF, 8pF
250pA
-85dB @ 1MHz
±4.5V ~ 20V
3Ohm (Max)
DG419
Tube
10V ~ 30V
35Ohm
SPDT
2:1
-
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
Surface Mount
0°C ~ 70°C (TA)
-
RFQ
MAX4592ESE+T
Analog Devices Inc./Maxim Integrated
IC SWITCH SPST-NOX4 20OHM 16SOIC
I roto i te taonga8390 pcs
80ns, 45ns
2pC
9pF, 9pF
100pA
-85dB @ 10MHz
-
500mOhm
MAX4592
Tape & Reel (TR)
3V ~ 16V
20Ohm
SPST - NO
1:1
-
4
16-SOIC
16-SOIC (0.154', 3.90mm Width)
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
MAX4641EUA+
Analog Devices Inc./Maxim Integrated
IC SWITCH SPST-NO X 2 4OHM 8UMAX
I roto i te taonga18218 pcs
15ns, 8ns
2pC
7pF, 7pF
250pA
-97dB @ 1MHz
-
200mOhm
MAX4641
Tube
1.8V ~ 5.5V
4Ohm
SPST - NO
1:1
-
2
8-uMAX/uSOP
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
ADG333ABRS
Analog Devices Inc.
IC SWITCH SPDT X 4 45OHM 20SSOP
I roto i te taonga5740 pcs
90ns, 80ns (Typ)
2pC
7pF
250pA
-85dB @ 1MHz
±3V ~ 20V
5Ohm
ADG333
Tube
3V ~ 30V
45Ohm
SPDT
2:1
-
4
20-SSOP
20-SSOP (0.209", 5.30mm Width)
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
FSA1256AL8X
Fairchild Semiconductor
IC SW SPST-NOX2 1.15OHM 8MICROPK
I roto i te taonga8460 pcs
35ns, 15ns
20pC
11.5pF
2nA (Typ)
-100dB @ 1MHz
-
60mOhm
-
Bulk
2.7V ~ 5.5V
1.15Ohm
SPST - NO
1:1
300MHz
2
8-MicroPak™
8-UFQFN
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
ISL84052IVZ
Renesas Electronics America Inc
IC SWITCH SP4TX2 100OHM 16TSSOP
I roto i te taonga31327 pcs
50ns, 40ns
2pC
3pF, 12pF
2pA (Typ)
-
±2V ~ 6V
6Ohm (Max)
ISL84052
Tube
2V ~ 12V
100Ohm
SP4T
4:1
-
2
16-TSSOP
16-TSSOP (0.173", 4.40mm Width)
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
MAX4533CWP+
Analog Devices Inc./Maxim Integrated
IC SWITCH SPDT X 4 175OHM 20SOIC
I roto i te taonga5512 pcs
250ns, 150ns
1.5pC
5pF
20nA
-66dB @ 1MHz
±4.5V ~ 18V
1Ohm
MAX4533
Tube
9V ~ 36V
175Ohm
SPDT
2:1
-
4
20-SOIC
20-SOIC (0.295', 7.50mm Width)
Surface Mount
0°C ~ 70°C (TA)
-
RFQ
DG403DVZ-T
Renesas Electronics America Inc
IC SWITCH SPDT X 2 45OHM 16TSSOP
I roto i te taonga26051 pcs
150ns, 100ns
60pC
12pF, 12pF
500pA
-90dB @ 1MHz
±5V ~ 17V
3Ohm
DG403
Tape & Reel (TR)
5V ~ 34V
45Ohm
SPDT
2:1
-
2
16-TSSOP
16-TSSOP (0.173", 4.40mm Width)
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
MC74HC4052AFELG
onsemi
DIFFERENTIAL MUX, 4 CHANNEL
I roto i te taonga94550 pcs
-
-
-
-
-
-
-
74HC4052
Bulk
-
-
-
-
-
-
-
-
-
-
*
RFQ
ADG433BRZ
Analog Devices Inc.
IC SW SPST-NO/NCX4 24OHM 16SOIC
I roto i te taonga8070 pcs
90ns, 60ns
5pC
9pF, 9pF
250pA
-85dB @ 1MHz
±15V
1.2Ohm
ADG433
Tube
12V
24Ohm
SPST - NO/NC
1:1
-
4
16-SOIC
16-SOIC (0.154', 3.90mm Width)
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
SN74LV4052ATPWRQ1
Texas Instruments
IC SWITCH SP4TX2 100OHM 16TSSOP
I roto i te taonga112660 pcs
18ns, 18ns
-
-
1µA
-45dB @ 1MHz
-
20Ohm (Max)
74LV4052
Tape & Reel (TR)
2V ~ 5.5V
100Ohm
SP4T
4:1
50MHz
2
16-TSSOP
16-TSSOP (0.173", 4.40mm Width)
Surface Mount
-40°C ~ 105°C (TA)
Automotive, AEC-Q100
RFQ
ADG741BKSZ-REEL7
Analog Devices Inc.
IC SWITCH SPST-NOX1 3OHM SC70-6
I roto i te taonga29958 pcs
12ns, 8ns (Typ)
5pC
17pF, 17pF
250pA
-
-
-
ADG741
Tape & Reel (TR)
1.8V ~ 5.5V
3Ohm
SPST - NO
1:1
200MHz
1
SC-70-6
6-TSSOP, SC-88, SOT-363
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
NLAS44599DTR2G
onsemi
IC SWITCH DPDT X 2 25OHM 16TSSOP
I roto i te taonga12750 pcs
14ns, 5ns
3pC
10pF, 10pF
10µA
-90dB @ 100kHz
-
-
NLAS4
Tape & Reel (TR)
2V ~ 5.5V
25Ohm
DPDT
2:2
175MHz
2
16-TSSOP
16-TSSOP (0.173', 4.40mm Width)
Surface Mount
-55°C ~ 125°C (TA)
-
RFQ
DG419DY
Analog Devices Inc./Maxim Integrated
IC SWITCH SPDT X 1 35OHM 8SOIC
I roto i te taonga13780 pcs
175ns, 145ns
3pC
8pF, 8pF
250pA
-85dB @ 1MHz
±4.5V ~ 20V
3Ohm (Max)
DG419
Tube
10V ~ 30V
35Ohm
SPDT
2:1
-
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
ISL43L712IRZ-T
Renesas Electronics America Inc
IC SW SPST-NO/NCX2 250MOHM 8TDFN
I roto i te taonga16000 pcs
25ns, 25ns
-125pC
182pF, 182pF
3nA
-94dB @ 100kHz
-
5mOhm
ISL43L712
Tape & Reel (TR)
1.65V ~ 3.6V
250mOhm
SPST - NO/NC
1:1
-
2
8-TDFN (3x3)
8-WDFN Exposed Pad
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
MAX307CPI
Analog Devices Inc./Maxim Integrated
IC MUX DUAL 8:1 100OHM 28DIP
I roto i te taonga7210 pcs
200ns, 150ns
2pC
8pF, 65pF
500pA
-92dB @ 100kHz
±4.5V ~ 20V
1.5Ohm
MAX307
Tube
5V ~ 30V
100Ohm
-
8:1
-
2
28-PDIP
28-DIP (0.600", 15.24mm)
Through Hole
0°C ~ 70°C (TA)
-
RFQ
MAX362CPE+
Analog Devices Inc./Maxim Integrated
IC SWITCH SPST-NOX4 85OHM 16DIP
I roto i te taonga4446 pcs
250ns, 120ns
5pC
4pF, 4pF
500pA
-100dB @ 1MHz
±4.5V ~ 20V
2Ohm (Max)
MAX362
Tube
10V ~ 30V
85Ohm
SPST - NO
1:1
-
4
16-PDIP
16-DIP (0.300', 7.62mm)
Through Hole
0°C ~ 70°C (TA)
-
RFQ
AD7501KNZ
Analog Devices Inc.
IC MULTIPLEXER 8X1 16DIP
I roto i te taonga14210 pcs
-
-
-
-
-
-
-
AD7501
Tube
-
-
-
-
-
-
16-PDIP
16-DIP (0.300", 7.62mm)
Through Hole
-
-
RFQ
DG202BDY-E3
Vishay Siliconix
IC SWITCH SPST-NOX4 85OHM 16SOIC
I roto i te taonga17965 pcs
300ns, 200ns
1pC
5pF, 5pF
500pA
-95dB @ 100kHz
±4.5V ~ 22V
2Ohm
DG202
Bulk
4.5V ~ 25V
85Ohm
SPST - NO
1:1
-
4
16-SOIC
16-SOIC (0.154", 3.90mm Width)
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
MAX4661EAE+T
Analog Devices Inc./Maxim Integrated
IC SW SPST-NCX4 2.5OHM 16SSOP
I roto i te taonga4809 pcs
275ns, 175ns
300pC
55pF, 55pF
500pA
-59dB @ 1MHz
±4.5V ~ 20V
100mOhm
MAX4661
Tape & Reel (TR)
4.5V ~ 36V
2.5Ohm
SPST - NC
1:1
-
4
16-SSOP
16-SSOP (0.209', 5.30mm Width)
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
HI9P0201-5Z
Renesas Electronics America Inc
IC SWITCH SPST-NCX4 80OHM 16SOIC
I roto i te taonga3837 pcs
185ns, 220ns (Typ)
-
5.5pF, 5.5pF
50nA
-
±15V
-
HI9P0201
Tube
-
80Ohm
SPST - NC
1:1
-
4
16-SOIC
16-SOIC (0.154', 3.90mm Width)
Surface Mount
0°C ~ 75°C (TA)
-
RFQ
PS398CSEE
Diodes Incorporated
IC MUX 8:1 100OHM 16SOIC
I roto i te taonga6790 pcs
150ns, 150ns
2.8pC
3.6pF, 31pF
50nA
-92dB @ 100kHz
±3V ~ 8V
6Ohm (Max)
PS398
Tube
3V ~ 15V
100Ohm
-
8:1
-
1
16-SOIC
16-SOIC (0.295", 7.50mm Width)
Surface Mount
-
-
RFQ
ADG433BRZ-REEL
Analog Devices Inc.
IC SW SPST-NO/NCX4 24OHM 16SOIC
I roto i te taonga8987 pcs
90ns, 60ns
5pC
9pF, 9pF
250pA
-85dB @ 1MHz
±15V
1.2Ohm
ADG433
Tape & Reel (TR)
12V
24Ohm
SPST - NO/NC
1:1
-
4
16-SOIC
16-SOIC (0.154', 3.90mm Width)
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
ADG823BRMZ
Analog Devices Inc.
IC SW SPST-NO/NCX2 600MOHM 8MSOP
I roto i te taonga19887 pcs
45ns, 16ns
15pC
85pF, 98pF
250pA
-82dB @ 1MHz
-
160mOhm
ADG823
Tube
1.8V ~ 5.5V
600mOhm
SPST - NO/NC
1:1
24MHz
2
8-MSOP
8-TSSOP, 8-MSOP (0.118', 3.00mm Width)
Surface Mount
-40°C ~ 125°C (TA)
-
RFQ
74HC4067D,653
NXP USA Inc.
IC MUX/DEMUX 1X16 24SOIC
I roto i te taonga16200 pcs
-
-
-
-
-
-
-
74HC4067
Bulk
-
-
-
-
-
-
-
-
-
-
*
RFQ
ADG1633BRUZ
Analog Devices Inc.
IC SWITCH SPDTX3 4.5OHM 16TSSOP
I roto i te taonga7930 pcs
38ns, 152ns
-12.4pC
19pF, 32pF
100pA
-64dB @ 1MHz
±3.3V ~ 8V
120mOhm
ADG1633
Tube
3.3V ~ 16V
4.5Ohm
SPDT
2:1
109MHz
3
16-TSSOP
16-TSSOP (0.173', 4.40mm Width)
Surface Mount
-40°C ~ 125°C (TA)
-
RFQ
MUX08FSZ
Analog Devices Inc.
IC MUX 8:1 300OHM 16SOIC
I roto i te taonga2173 pcs
2µs, 400ns
-
2.5pF, 7pF
1nA
-70dB @ 500kHz
-
21Ohm
MUX08
Tube
-
300Ohm
-
8:1
-
1
16-SOIC
16-SOIC (0.154", 3.90mm Width)
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
MAX4651EUE+T
Analog Devices Inc./Maxim Integrated
IC SWITCH SPST-NCX4 4OHM 16TSSOP
I roto i te taonga14991 pcs
14ns, 8ns
2pC
16pF, 16pF
100pA
-100dB @ 1MHz
-
50mOhm
MAX4651
Tape & Reel (TR)
1.8V ~ 5.5V
4Ohm
SPST - NC
1:1
-
4
16-TSSOP
16-TSSOP (0.173', 4.40mm Width)
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
ADG5412BRUZ-REEL7
Analog Devices Inc.
IC SW SPST-NOX4 10OHM 16TSSOP
I roto i te taonga7130 pcs
187ns, 138ns
310pC
17pF, 17pF
250pA
-70dB @ 1MHz
±9V ~ 22V
350mOhm
ADG5412
Tape & Reel (TR)
9V ~ 40V
10Ohm
SPST - NO
1:1
160MHz
4
16-TSSOP
16-TSSOP (0.173', 4.40mm Width)
Surface Mount
-40°C ~ 125°C (TA)
-
RFQ
ADG452BRZ
Analog Devices Inc.
IC SWITCH SPST-NOX4 5OHM 16SOIC
I roto i te taonga6158 pcs
180ns, 140ns
20pC
37pF, 37pF
500pA
-90dB @ 1MHz
±4.5V ~ 20V
100mOhm
ADG452
Tube
12V
5Ohm
SPST - NO
1:1
-
4
16-SOIC
16-SOIC (0.154", 3.90mm Width)
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
TS3A24157RSER
Texas Instruments
IC SWITCH SPDTX2 600MOHM 10UQFN
I roto i te taonga66310 pcs
35ns, 25ns
8.75pC
50pF
50nA
-72dB @ 1MHz
-
50mOhm
TS3A24157
Tape & Reel (TR)
1.65V ~ 3.6V
600mOhm
SPDT
2:1
50MHz
2
10-UQFN (2.0x1.5)
10-UFQFN
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
NLV14051BDR2G
onsemi
IC MUX 8:1 280OHM 16SOIC
I roto i te taonga84410 pcs
-
-
7.5pF
100nA
-
-
10Ohm
NLV14051
Tape & Reel (TR)
3V ~ 18V
280Ohm
-
8:1
17MHz
1
16-SOIC
16-SOIC (0.154", 3.90mm Width)
Surface Mount
-55°C ~ 125°C (TA)
Automotive, AEC-Q100
RFQ
MAX309ESE+
Analog Devices Inc./Maxim Integrated
IC SWITCH SP4T X 2 100OHM 16SOIC
I roto i te taonga4455 pcs
150ns, 150ns
2pC
3pF, 26pF
750pA
-92dB @ 100kHz
±5V ~ 20V
1.5Ohm
MAX309
Tube
5V ~ 30V
100Ohm
SP4T
4:1
-
2
16-SOIC
16-SOIC (0.154", 3.90mm Width)
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
DG419LDY
Analog Devices Inc./Maxim Integrated
IC SWITCH SPDT X 1 35OHM 8SOIC
I roto i te taonga7730 pcs
-
15pC
8pF, 8pF
250pA
-86dB @ 1MHz
±4.5V ~ 20V
100mOhm
DG419
Tube
9V ~ 36V
35Ohm
SPDT
2:1
-
1
8-SOIC
8-SOIC (0.154', 3.90mm Width)
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
DG409DY
Renesas Electronics America Inc
IC SWITCH SP4T X 2 100OHM 16SOIC
I roto i te taonga9130 pcs
150ns, 150ns
20pC
3pF, 14pF
500pA
-
±5V ~ 20V
15Ohm (Max)
DG409
Bag
5V ~ 34V
100Ohm
SP4T
4:1
-
2
16-SOIC
16-SOIC (0.154', 3.90mm Width)
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
DG419LDY
Vishay Siliconix
IC SWITCH SPDT X 1 20OHM 8SOIC
I roto i te taonga12000 pcs
43ns, 31ns
1pC
5pF
1nA
-71dB @ 1MHz
±3V ~ 6V
-
DG419
Tube
2.7V ~ 12V
20Ohm
SPDT
2:1
-
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
DG413DJZ
Renesas Electronics America Inc
IC SW SPST-NO/NCX4 35OHM 16DIP
I roto i te taonga15565 pcs
175ns, 145ns
5pC
9pF, 9pF
100pA
-85dB @ 1MHz
±5V ~ 20V
-
DG413
Tube
5V ~ 44V
35Ohm
SPST - NO/NC
1:1
-
4
16-PDIP
16-DIP (0.300', 7.62mm)
Through Hole
-40°C ~ 85°C (TA)
-
RFQ
ADG709CRU
Analog Devices Inc.
IC SWITCH SP4TX2 4.5OHM 16TSSOP
I roto i te taonga4920 pcs
14ns, 8ns (Typ)
3pC
13pF, 42pF
10pA (Typ)
-80dB @ 1MHz
±2.5V
400mOhm
ADG709
Tube
1.8V ~ 5.5V
4.5Ohm
SP4T
4:1
55MHz
2
16-TSSOP
16-TSSOP (0.173", 4.40mm Width)
Surface Mount
-40°C ~ 125°C (TA)
-
RFQ
ADG708CRUZ-REEL
Analog Devices Inc.
IC MUX 8:1 4.5OHM 16TSSOP
I roto i te taonga14268 pcs
14ns, 8ns (Typ)
3pC
13pF, 85pF
10pA (Typ)
-80dB @ 1MHz
±2.5V
400mOhm
ADG708
Tape & Reel (TR)
1.8V ~ 5.5V
4.5Ohm
-
8:1
55MHz
1
16-TSSOP
16-TSSOP (0.173', 4.40mm Width)
Surface Mount
-40°C ~ 125°C (TA)
-
RFQ
DG183AP/883
Vishay Siliconix
IC SWITCH DPST-NOX2 10OHM 16DIP
I roto i te taonga9000 pcs
400ns, 200ns
-
21pF, 17pF
10nA
-
±15V
-
DG183
Tube
-
10Ohm
DPST - NO
2:1
-
2
16-DIP
16-DIP (0.300", 7.62mm)
Through Hole
-55°C ~ 125°C (TA)
-
RFQ
MAX4516CSA
Analog Devices Inc./Maxim Integrated
IC SWITCH SPST-NOX1 20OHM 8SOIC
I roto i te taonga17340 pcs
100ns, 75ns
10pC
9pF, 9pF
1nA
-
±1V ~ 6V
-
MAX4516
Tube
2V ~ 12V
20Ohm
SPST - NO
1:1
-
1
8-SOIC
8-SOIC (0.154', 3.90mm Width)
Surface Mount
0°C ~ 70°C (TA)
-
RFQ
SN74LVC2G53DCUT
Texas Instruments
IC SWITCH SPDT X 1 13OHM 8VSSOP
I roto i te taonga46890 pcs
4.5ns, 8ns
-
10pF
100nA
-58dB @ 1MHz
-
2Ohm (Max)
74LVC2G53
Tape & Reel (TR)
1.65V ~ 5.5V
13Ohm
SPDT
2:1
300MHz
1
8-VSSOP
8-VFSOP (0.091", 2.30mm Width)
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
MAX336EPI+
Analog Devices Inc./Maxim Integrated
IC MUX 16:1 400OHM 28DIP
I roto i te taonga2010 pcs
500ns, 500ns
3.5pC
2pF, 20pF
20pA
-86dB @ 100kHz
±4.5V ~ 20V
5Ohm
MAX336
Tube
4.5V ~ 20V
400Ohm
-
16:1
-
1
28-PDIP
28-DIP (0.600", 15.24mm)
Through Hole
-40°C ~ 85°C (TA)
-
RFQ
AD8184AN
Analog Devices Inc.
IC VIDEO MULTIPLEXER 4X1 14DIP
I roto i te taonga8371 pcs
-
-
-
-
-
-
-
AD8184
Tube
-
-
-
-
-
-
14-PDIP
14-DIP (0.300", 7.62mm)
Through Hole
-
-
RFQ
MC74HC4053ADTR2G
onsemi
IC SWITCH SPDTX3 100OHM 16TSSOP
I roto i te taonga146070 pcs
-
-
50pF
100nA
-60dB @ 1MHz
±2V ~ 6V
10Ohm
74HC4053
Tape & Reel (TR)
2V ~ 6V
100Ohm
SPDT
2:1
120MHz
3
16-TSSOP
16-TSSOP (0.173', 4.40mm Width)
Surface Mount
-55°C ~ 125°C (TA)
-
RFQ
MAX305CPE
Analog Devices Inc./Maxim Integrated
IC SWITCH DPST-NOX2 35OHM 16DIP
I roto i te taonga10390 pcs
150ns, 100ns
10pC
12pF, 12pF
500pA
-90dB @ 1MHz
±4.5V ~ 20V
500mOhm
MAX305
Tube
10V ~ 30V
35Ohm
DPST - NO
2:1
-
2
16-PDIP
16-DIP (0.300", 7.62mm)
Through Hole
0°C ~ 70°C (TA)
-
RFQ
PS392CSEE
Diodes Incorporated
IC SWITCH SPST-NOX4 45OHM 16SOIC
I roto i te taonga7540 pcs
130ns, 75ns
3pC
12pF, 12pF
100pA
-90dB @ 1MHz
±3V ~ 8V
500mOhm
PS392
Tube
3V ~ 15V
45Ohm
SPST - NO
1:1
100MHz
4
16-SOIC
16-SOIC (0.295', 7.50mm Width)
Surface Mount
0°C ~ 70°C (TA)
-
RFQ
74HC4053DB,112
NXP Semiconductors
NEXPERIA 74HC4053DB - SINGLE-END
I roto i te taonga150710 pcs
-
-
-
-
-
-
-
74HC4053
Bulk
-
-
-
-
-
-
-
-
-
-
*
RFQ