74VHC374MTCX
onsemi
IC FF D-TYPE SNGL 8BIT 20TSSOP
स्टॉक में4950 pcs
8
Tape & Reel (TR)
74VHC374
4 µA
4 pF
10.1ns @ 5V, 50pF
Positive Edge
8mA, 8mA
120 MHz
Standard
2V ~ 5.5V
1
20-TSSOP
20-TSSOP (0.173", 4.40mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74VHC
RFQ
DM74AS74N
Fairchild Semiconductor
IC FF D-TYPE DUAL 1BIT 14DIP
स्टॉक में159380 pcs
1
Tube
74AS74
16 mA
-
9ns @ 5V, 50pF
Positive Edge
2mA, 20mA
105 MHz
Set(Preset) and Reset
4.5V ~ 5.5V
2
14-DIP
14-DIP (0.300", 7.62mm)
Complementary
D-Type
Through Hole
0°C ~ 70°C (TA)
74AS
RFQ
SN74LS112ADR
Texas Instruments
IC FF JK TYPE DUAL 1BIT 16SOIC
स्टॉक में107590 pcs
1
Tape & Reel (TR)
74LS112
6 mA
-
20ns @ 5V, 15pF
Negative Edge
400µA, 8mA
45 MHz
Set(Preset) and Reset
4.75V ~ 5.25V
2
16-SOIC
16-SOIC (0.154', 3.90mm Width)
Complementary
JK Type
Surface Mount
0°C ~ 70°C (TA)
74LS
RFQ
SN74LVTH273DWR
Texas Instruments
IC FF D-TYPE SNGL 8BIT 20SOIC
स्टॉक में57870 pcs
8
Tape & Reel (TR)
74LVTH273
190 µA
4 pF
4.9ns @ 3.3V, 50pF
Positive Edge
32mA, 64mA
150 MHz
Master Reset
2.7V ~ 3.6V
1
20-SOIC
20-SOIC (0.295", 7.50mm Width)
Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74LVTH
RFQ
SN54LS109AJ
Texas Instruments
54LS109A DUAL J-K POSITIVE-EDGE-
स्टॉक में3106 pcs
-
Bulk
54LS109
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
*
RFQ
74F112PC
onsemi
IC FF JK TYPE DUAL 1BIT 16DIP
स्टॉक में4420 pcs
1
Tube
74F112
19 mA
-
6.5ns @ 5V, 50pF
Negative Edge
1mA, 20mA
105 MHz
Set(Preset) and Reset
4.5V ~ 5.5V
2
16-PDIP
16-DIP (0.300', 7.62mm)
Complementary
JK Type
Through Hole
0°C ~ 70°C (TA)
74F
RFQ
SN74LS173AN
Texas Instruments
IC FF D-TYPE SNGL 4BIT 16DIP
स्टॉक में31720 pcs
4
Tube
74LS173
24 mA
-
30ns @ 5V, 45pF
Positive Edge
2.6mA, 24mA
50 MHz
Master Reset
4.75V ~ 5.25V
1
16-PDIP
16-DIP (0.300", 7.62mm)
Tri-State, Non-Inverted
D-Type
Through Hole
0°C ~ 70°C (TA)
74LS
RFQ
CD74HC377M96
Texas Instruments
IC FF D-TYPE SNGL 8BIT 20SOIC
स्टॉक में102890 pcs
8
Tape & Reel (TR)
74HC377
8 µA
10 pF
30ns @ 6V, 50pF
Positive Edge
5.2mA, 5.2mA
60 MHz
Standard
2V ~ 6V
1
20-SOIC
20-SOIC (0.295', 7.50mm Width)
Non-Inverted
D-Type
Surface Mount
-55°C ~ 125°C (TA)
74HC
RFQ
CY74FCT821CTQCT
Texas Instruments
IC FF D-TYPE SNGL 10BIT 24QSOP
स्टॉक में45310 pcs
10
Tape & Reel (TR)
74FCT821
200 µA
5 pF
6ns @ 50pF
Positive Edge
32mA, 64mA
-
Standard
4.75V ~ 5.25V
1
24-SSOP
24-SSOP (0.154', 3.90mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74FCT
RFQ
74VHCT74AM
Fairchild Semiconductor
IC FF D-TYPE DUAL 1BIT 14SOIC
स्टॉक में233860 pcs
1
Tube
74VHCT74
2 µA
4 pF
8.8ns @ 5V, 50pF
Positive Edge
8mA, 8mA
140 MHz
Set(Preset) and Reset
4.5V ~ 5.5V
2
14-SOIC
14-SOIC (0.154", 3.90mm Width)
Complementary
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74VHCT
RFQ
MC74HC273AFEL
onsemi
IC FF D-TYPE SNGL 8BIT 20SOEIAJ
स्टॉक में15830 pcs
8
Tape & Reel (TR)
74HC273
4 µA
10 pF
25ns @ 6V, 50pF
Positive Edge
7.8mA, 7.8mA
35 MHz
Reset
2V ~ 6V
1
SOEIAJ-20
20-SOIC (0.209', 5.30mm Width)
Non-Inverted
D-Type
Surface Mount
-55°C ~ 125°C (TA)
74HC
RFQ
MC74AC574DWR2
onsemi
IC FF D-TYPE SNGL 8BIT 20SOIC
स्टॉक में6440 pcs
8
Tape & Reel (TR)
74AC574
8 µA
4.5 pF
9.5ns @ 5V, 50pF
Positive Edge
24mA, 24mA
95 MHz
Standard
2V ~ 6V
1
20-SOIC
20-SOIC (0.295', 7.50mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74AC
RFQ
SN74HC175N
Texas Instruments
IC FF D-TYPE SNGL 4BIT 16DIP
स्टॉक में119310 pcs
4
Tube
74HC175
8 µA
3 pF
26ns @ 6V, 50pF
Positive Edge
5.2mA, 5.2mA
60 MHz
Master Reset
2V ~ 6V
1
16-PDIP
16-DIP (0.300', 7.62mm)
Complementary
D-Type
Through Hole
-40°C ~ 85°C (TA)
74HC
RFQ
54F174/BEA
Rochester Electronics, LLC
DUAL MARKED (M38510/34107BEA)
स्टॉक में626 pcs
-
Bulk
54F174
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
*
RFQ
MC100EP451MNR4G
onsemi
IC FF D-TYPE SNGL 6BIT 32QFN
स्टॉक में2745 pcs
6
Tape & Reel (TR)
MC100EP451
135 mA
-
-
Positive Edge
-
3 GHz
Master Reset
-3V ~ -5.5V
1
32-QFN (5x5)
32-VFQFN Exposed Pad
Complementary
D-Type
Surface Mount
-40°C ~ 85°C (TA)
100EP
RFQ
CD40174BM96
Texas Instruments
IC FF D-TYPE SNGL 6BIT 16SOIC
स्टॉक में203780 pcs
6
Tape & Reel (TR)
CD40174
4 µA
5 pF
100ns @ 15V, 50pF
Positive Edge
6.8mA, 6.8mA
16 MHz
Master Reset
3V ~ 18V
1
16-SOIC
16-SOIC (0.154', 3.90mm Width)
Non-Inverted
D-Type
Surface Mount
-55°C ~ 125°C (TA)
4000B
RFQ
MC74HCT574ADW
onsemi
IC FF D-TYPE SNGL 8BIT 20SOIC
स्टॉक में11830 pcs
8
Tube
74HCT574
4 µA
10 pF
30ns @ 5V, 50pF
Positive Edge
6mA, 6mA
30 MHz
Standard
4.5V ~ 5.5V
1
20-SOIC
20-SOIC (0.295", 7.50mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
-55°C ~ 125°C (TA)
74HCT
RFQ
MC10H135FN
onsemi
IC FF JK TYPE DUAL 1BIT 20PLCC
स्टॉक में16140 pcs
1
Tube
MC10H135
68 mA
-
-
Positive Edge
-
250 MHz
Set(Preset) and Reset
-4.9V ~ -5.46V
2
20-PLCC (9x9)
20-LCC (J-Lead)
Complementary
JK Type
Surface Mount
0°C ~ 75°C (TA)
10H
RFQ
74LCX374SJX
Fairchild Semiconductor
IC FF D-TYPE SNGL 8BIT 20SOP
स्टॉक में68160 pcs
8
Bulk
74LCX374
10 µA
7 pF
8.5ns @ 3.3V, 50pF
Positive Edge
24mA, 24mA
150 MHz
Standard
2V ~ 3.6V
1
20-SOP
20-SOIC (0.209", 5.30mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74LCX
RFQ
SN74AHC74PWR
Texas Instruments
IC FF D-TYPE DUAL 1BIT 14TSSOP
स्टॉक में306230 pcs
1
Tape & Reel (TR)
74AHC74
2 µA
2 pF
9.3ns @ 5V, 50pF
Positive Edge
8mA, 8mA
115 MHz
Set(Preset) and Reset
2V ~ 5.5V
2
14-TSSOP
14-TSSOP (0.173", 4.40mm Width)
Complementary
D-Type
Surface Mount
-40°C ~ 125°C (TA)
74AHC
RFQ
74LCX574WM
onsemi
IC FF D-TYPE SNGL 8BIT 20SOIC
स्टॉक में8110 pcs
8
Tube
74LCX574
10 µA
7 pF
8.5ns @ 3.3V, 50pF
Positive Edge
24mA, 24mA
150 MHz
Standard
2V ~ 3.6V
1
20-SOIC
20-SOIC (0.295", 7.50mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74LCX
RFQ
SN74ALS574BNS
Texas Instruments
IC D-TYPE POS TRG SNGL 20SO
स्टॉक में40960 pcs
-
Bulk
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
*
RFQ
SN74F74NSR
Texas Instruments
IC FF D-TYPE DUAL 1BIT 14SOP
स्टॉक में117490 pcs
1
Tape & Reel (TR)
74F74
16 mA
-
8ns @ 5V, 50pF
Positive Edge
1mA, 20mA
145 MHz
Set(Preset) and Reset
4.5V ~ 5.5V
2
14-SO
14-SOIC (0.209", 5.30mm Width)
Complementary
D-Type
Surface Mount
0°C ~ 70°C (TA)
74F
RFQ
SN74F74DR
Texas Instruments
IC FF D-TYPE DUAL 1BIT 14SOIC
स्टॉक में123160 pcs
1
Tape & Reel (TR)
74F74
16 mA
-
5.8ns @ 5V, 50pF
Positive Edge
1mA, 20mA
145 MHz
Set(Preset) and Reset
4.5V ~ 5.5V
2
14-SOIC
14-SOIC (0.154', 3.90mm Width)
Complementary
D-Type
Surface Mount
0°C ~ 70°C (TA)
74F
RFQ
CY74FCT16374ATPVC
Texas Instruments
IC FF D-TYPE DUAL 8BIT 48SSOP
स्टॉक में27405 pcs
8
Tube
74FCT16374
500 µA
4.5 pF
-
Positive Edge
32mA, 64mA
-
Standard
4.5V ~ 5.5V
2
48-SSOP
48-BSSOP (0.295', 7.50mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74FCT
RFQ
SN74LVC1G80YEAR
Texas Instruments
IC FF D-TYPE SNGL 1BIT 5DSBGA
स्टॉक में10430 pcs
1
Tape & Reel (TR)
74LVC1G80
10 µA
3.5 pF
4.5ns @ 5V, 50pF
Positive Edge
32mA, 32mA
160 MHz
Standard
1.65V ~ 5.5V
1
5-DSBGA (1.4x0.9)
5-XFBGA, DSBGA
Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74LVC
RFQ
SN74ALS874BDW
Texas Instruments
IC FF D-TYPE DUAL 4BIT 20SOIC
स्टॉक में6970 pcs
4
Tube
74ALS874
21 mA
-
14ns @ 5V, 50pF
Positive Edge
2.6mA, 24mA
30 MHz
Master Reset
4.5V ~ 5.5V
2
24-SOIC
24-SOIC (0.295", 7.50mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
0°C ~ 70°C (TA)
74ALS
RFQ
74F112PC
Texas Instruments
IC FF JK TYPE DUAL 1BIT 16DIP
स्टॉक में142180 pcs
1
Bulk
74F112
19 mA
-
6.5ns @ 5V, 50pF
Negative Edge
1mA, 20mA
105 MHz
Set(Preset) and Reset
4.5V ~ 5.5V
2
16-PDIP
16-DIP (0.300", 7.62mm)
Complementary
JK Type
Through Hole
0°C ~ 70°C (TA)
74F
RFQ
MM74HCT374WMX
Fairchild Semiconductor
IC FF D-TYPE SNGL 8BIT 20SOIC
स्टॉक में95050 pcs
8
Bulk
74HCT374
8 µA
10 pF
46ns @ 5V, 150pF
Positive Edge
7.2mA, 7.2mA
30 MHz
Standard
4.5V ~ 5.5V
1
20-SOIC
20-SOIC (0.295", 7.50mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74HCT
RFQ
MC74VHC374DTR2
onsemi
IC FF D-TYPE SNGL 8BIT 20TSSOP
स्टॉक में16190 pcs
8
Tape & Reel (TR)
74VHC374
4 µA
4 pF
10.1ns @ 5V, 50pF
Positive Edge
8mA, 8mA
120 MHz
Standard
2V ~ 5.5V
1
20-TSSOP
20-TSSOP (0.173", 4.40mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74VHC
RFQ
SN74LS74AD
Texas Instruments
IC FF D-TYPE DUAL 1BIT 14SOIC
स्टॉक में75300 pcs
1
Tube
74LS74
8 mA
-
40ns @ 5V, 15pF
Positive Edge
400µA, 8mA
33 MHz
Set(Preset) and Reset
4.75V ~ 5.25V
2
14-SOIC
14-SOIC (0.154", 3.90mm Width)
Complementary
D-Type
Surface Mount
0°C ~ 70°C (TA)
74LS
RFQ
SN74HC112DR
Texas Instruments
IC FF JK TYPE DUAL 1BIT 16SOIC
स्टॉक में200950 pcs
1
Tape & Reel (TR)
74HC112
4 µA
3 pF
21ns @ 6V, 50pF
Negative Edge
5.2mA, 5.2mA
60 MHz
Set(Preset) and Reset
2V ~ 6V
2
16-SOIC
16-SOIC (0.154", 3.90mm Width)
Complementary
JK Type
Surface Mount
-40°C ~ 85°C (TA)
74HC
RFQ
SN74ALS175DR
Texas Instruments
IC FF D-TYPE SNGL 4BIT 16SOIC
स्टॉक में116000 pcs
4
Tape & Reel (TR)
74ALS175
14 mA
-
17ns @ 5V, 50pF
Positive Edge
400µA, 8mA
50 MHz
Master Reset
4.5V ~ 5.5V
1
16-SOIC
16-SOIC (0.154", 3.90mm Width)
Complementary
D-Type
Surface Mount
0°C ~ 70°C (TA)
74ALS
RFQ
DM74ALS174M
onsemi
IC FF D-TYPE SNGL 6BIT 16SOIC
स्टॉक में11970 pcs
6
Tube
74ALS174
19 mA
-
17ns @ 5V, 50pF
Positive Edge
400µA, 8mA
50 MHz
Master Reset
4.5V ~ 5.5V
1
16-SOIC
16-SOIC (0.154', 3.90mm Width)
Non-Inverted
D-Type
Surface Mount
0°C ~ 70°C (TA)
74ALS
RFQ
MC10H131PG
onsemi
IC FF D-TYPE DUAL 1BIT 16DIP
स्टॉक में4020 pcs
1
Tube
MC10H131
56 mA
-
-
Positive Edge
-
250 MHz
Set(Preset) and Reset
-4.9V ~ -5.46V
2
16-PDIP
16-DIP (0.300", 7.62mm)
Complementary
D-Type
Through Hole
0°C ~ 75°C (TA)
10H
RFQ
MM74C74N
onsemi
IC FF D-TYPE DUAL 1BIT 14DIP
स्टॉक में12380 pcs
1
Tube
74C74
60 µA
5 pF
110ns @ 10V, 50pF
Positive Edge
8mA, 8mA
8 MHz
Set(Preset) and Reset
3V ~ 15V
2
14-MDIP
14-DIP (0.300', 7.62mm)
Complementary
D-Type
Through Hole
-55°C ~ 125°C (TA)
74C
RFQ
74ACT273SCX
Fairchild Semiconductor
IC FF D-TYPE SNGL 8BIT 20SOIC
स्टॉक में101780 pcs
8
Bulk
74ACT273
40 µA
4.5 pF
8.5ns @ 5V, 50pF
Positive Edge
24mA, 24mA
189 MHz
Master Reset
4.5V ~ 5.5V
1
20-SOIC
20-SOIC (0.295", 7.50mm Width)
Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74ACT
RFQ
MC74HC74AFEL
onsemi
IC FF D-TYPE DUAL 1BIT 14SOEIAJ
स्टॉक में13200 pcs
1
Tape & Reel (TR)
74HC74
2 µA
10 pF
17ns @ 6V, 50pF
Positive Edge
5.2mA, 5.2mA
35 MHz
Set(Preset) and Reset
2V ~ 6V
2
SOEIAJ-14
14-SOIC (0.209", 5.30mm Width)
Complementary
D-Type
Surface Mount
-55°C ~ 125°C (TA)
74HC
RFQ
74ACT821SPC
onsemi
IC FF D-TYPE SNGL 10BIT 24DIP
स्टॉक में5190 pcs
10
Tube
74ACT821
80 µA
4.5 pF
9.5ns @ 5V, 50pF
Positive Edge
24mA, 24mA
150 MHz
Standard
4.5V ~ 5.5V
1
24-PDIP
24-DIP (0.300", 7.62mm)
Tri-State, Non-Inverted
D-Type
Through Hole
-40°C ~ 85°C (TA)
74ACT
RFQ
SN74LVC1G74DCTR
Texas Instruments
IC FF D-TYPE SNGL 1BIT SM8
स्टॉक में113000 pcs
1
Tape & Reel (TR)
74LVC1G74
10 µA
5 pF
6.4ns @ 5V, 50pF
Positive Edge
32mA, 32mA
200 MHz
Set(Preset) and Reset
1.65V ~ 5.5V
1
SM8
8-LSSOP, 8-MSOP (0.110", 2.80mm Width)
Complementary
D-Type
Surface Mount
-40°C ~ 125°C (TA)
74LVC
RFQ
SN74ALS174NSR
Texas Instruments
IC FF D-TYPE SNGL 6BIT 16SO
स्टॉक में97630 pcs
6
Tape & Reel (TR)
74ALS174
19 mA
-
17ns @ 5V, 50pF
Positive Edge
400µA, 8mA
50 MHz
Master Reset
4.5V ~ 5.5V
1
16-SO
16-SOIC (0.209", 5.30mm Width)
Non-Inverted
D-Type
Surface Mount
0°C ~ 70°C (TA)
74ALS
RFQ
SN74ALS574BN
Texas Instruments
IC FF D-TYPE SNGL 8BIT 20DIP
स्टॉक में54940 pcs
8
Tube
74ALS574
18 mA
-
14ns @ 5V, 50pF
Positive Edge
2.6mA, 24mA
35 MHz
Standard
4.5V ~ 5.5V
1
20-PDIP
20-DIP (0.300', 7.62mm)
Tri-State, Non-Inverted
D-Type
Through Hole
0°C ~ 70°C (TA)
74ALS
RFQ
DM74ALS74AM
onsemi
IC FF D-TYPE DUAL 1BIT 14SOIC
स्टॉक में9630 pcs
1
Tube
74ALS74
4 mA
-
18ns @ 5V, 50pF
Positive Edge
400µA, 8mA
34 MHz
Set(Preset) and Reset
4.5V ~ 5.5V
2
14-SOIC
14-SOIC (0.154", 3.90mm Width)
Complementary
D-Type
Surface Mount
0°C ~ 70°C (TA)
74ALS
RFQ
MC74ACT74N
onsemi
IC FF D-TYPE DUAL 1BIT 14DIP
स्टॉक में5550 pcs
1
Tube
74ACT74
4 µA
4.5 pF
11ns @ 5V, 50pF
Positive Edge
24mA, 24mA
210 MHz
Set(Preset) and Reset
4.5V ~ 5.5V
2
14-PDIP
14-DIP (0.300", 7.62mm)
Complementary
D-Type
Through Hole
-40°C ~ 85°C (TA)
74ACT
RFQ
74F534PC
onsemi
IC FF D-TYPE SNGL 8BIT 20DIP
स्टॉक में12140 pcs
8
Tube
74F534
86 mA
-
8.5ns @ 5V, 50pF
Positive Edge
3mA, 24mA
100 MHz
Standard
4.5V ~ 5.5V
1
20-PDIP
20-DIP (0.300', 7.62mm)
Tri-State, Inverted
D-Type
Through Hole
0°C ~ 70°C (TA)
74F
RFQ
74HC107D,653
NXP USA Inc.
IC DUAL JK F-F NEG-EDGE 14-SOIC
स्टॉक में9200 pcs
1
Bulk
74HC107
4 µA
3.5 pF
27ns @ 6V, 50pF
Negative Edge
5.2mA, 5.2mA
85 MHz
Reset
2V ~ 6V
2
14-SO
14-SOIC (0.154", 3.90mm Width)
Complementary
JK Type
Surface Mount
-40°C ~ 125°C (TA)
74HC
RFQ
74ACT574MTR
STMicroelectronics
IC FF D-TYPE SNGL 8BIT 20SOP
स्टॉक में10590 pcs
8
Tape & Reel (TR)
74ACT574
4 µA
4 pF
10ns @ 5V, 50pF
Positive Edge
24mA, 24mA
270 MHz
Standard
4.5V ~ 5.5V
1
20-SO
20-SOIC (0.295", 7.50mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
-55°C ~ 125°C (TA)
74ACT
RFQ
SN74AHC74N
Texas Instruments
IC FF D-TYPE DUAL 1BIT 14DIP
स्टॉक में82600 pcs
1
Tube
74AHC74
2 µA
2 pF
9.3ns @ 5V, 50pF
Positive Edge
8mA, 8mA
115 MHz
Set(Preset) and Reset
2V ~ 5.5V
2
14-PDIP
14-DIP (0.300", 7.62mm)
Complementary
D-Type
Through Hole
-40°C ~ 125°C (TA)
74AHC
RFQ
74ACTQ374SC
Fairchild Semiconductor
IC FF D-TYPE SNGL 8BIT 20SOIC
स्टॉक में31107 pcs
8
Tube
74ACTQ374
40 µA
4.5 pF
9ns @ 5V, 50pF
Positive Edge
24mA, 24mA
85 MHz
Standard
4.5V ~ 5.5V
1
20-SOIC
20-SOIC (0.295", 7.50mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74ACTQ
RFQ
SN74LS109AN
Texas Instruments
IC FF JK TYPE DUAL 1BIT 16DIP
स्टॉक में48710 pcs
1
Tube
74LS109
8 mA
-
40ns @ 5V, 15pF
Positive Edge
400µA, 8mA
33 MHz
Set(Preset) and Reset
4.75V ~ 5.25V
2
16-PDIP
16-DIP (0.300', 7.62mm)
Complementary
JK Type
Through Hole
0°C ~ 70°C (TA)
74LS
RFQ