SN74AUP1G74DCUR
Texas Instruments
IC FF D-TYPE SNGL 1BIT 8VSSOP
Dalam stok205040 pcs
1
Tape & Reel (TR)
74AUP1G74
500 nA
1.5 pF
7ns @ 3.3V, 30pF
Positive Edge
4mA, 4mA
100 MHz
Set(Preset) and Reset
0.8V ~ 3.6V
1
8-VSSOP
8-VFSOP (0.091', 2.30mm Width)
Complementary
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74AUP
RFQ
74HC74D,652
Nexperia USA Inc.
IC FF D-TYPE DUAL 1BIT 14SO
Dalam stok16770 pcs
1
Tube
74HC74
40 µA
3.5 pF
37ns @ 6V, 50pF
Positive Edge
5.2mA, 5.2mA
82 MHz
Set(Preset) and Reset
2V ~ 6V
2
14-SO
14-SOIC (0.154", 3.90mm Width)
Complementary
D-Type
Surface Mount
-40°C ~ 125°C (TA)
74HC
RFQ
DM74ALS74AMX
Fairchild Semiconductor
IC FF D-TYPE DUAL 1BIT 14SOIC
Dalam stok283030 pcs
1
Bulk
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
MC74HC74ADTR2
onsemi
IC FF D-TYPE DUAL 1BIT 14TSSOP
Dalam stok7740 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
14-TSSOP
14-TSSOP (0.173', 4.40mm Width)
Complementary
D-Type
Surface Mount
-55°C ~ 125°C (TA)
74HC
RFQ
SN74HC174DR
Texas Instruments
IC FF D-TYPE SNGL 6BIT 16SOIC
Dalam stok216310 pcs
6
Tape & Reel (TR)
74HC174
8 µA
3 pF
14ns @ 6V, 50pF
Positive Edge
5.2mA, 5.2mA
50 MHz
Master Reset
2V ~ 6V
1
16-SOIC
16-SOIC (0.154", 3.90mm Width)
Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74HC
RFQ
74VCX162374MTD
onsemi
IC FF D-TYPE DUAL 8BIT 48TSSOP
Dalam stok4080 pcs
8
Tube
74VCX162374
20 µA
6 pF
3.4ns @ 3.3V, 30pF
Positive Edge
12mA, 12mA
250 MHz
Standard
1.4V ~ 3.6V
2
48-TSSOP
48-TFSOP (0.240", 6.10mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74VCX
RFQ
SN74LV273APWG4
Texas Instruments
IC FF D-TYPE SNGL 8BIT 20TSSOP
Dalam stok11490 pcs
8
Tube
74LV273
20 µA
2 pF
11ns @ 5V, 50pF
Positive Edge
12mA, 12mA
160 MHz
Master Reset
2V ~ 5.5V
1
20-TSSOP
20-TSSOP (0.173", 4.40mm Width)
Non-Inverted
D-Type
Surface Mount
-40°C ~ 125°C (TA)
74LV
RFQ
SN74HCT273DW
Texas Instruments
IC FF D-TYPE SNGL 8BIT 20SOIC
Dalam stok73060 pcs
8
Tube
74HCT273
8 µA
3 pF
29ns @ 5.5V, 50pF
Positive Edge
4mA, 4mA
37 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)
74HCT
RFQ
MM74HC273SJX
onsemi
IC FF D-TYPE SNGL 8BIT 20SOP
Dalam stok17510 pcs
8
Tape & Reel (TR)
74HC273
8 µA
7 pF
23ns @ 6V, 50pF
Positive Edge
5.2mA, 5.2mA
78 MHz
Master Reset
2V ~ 6V
1
20-SOP
20-SOIC (0.209', 5.30mm Width)
Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74HC
RFQ
74VHC74MTC
onsemi
IC FF D-TYPE DUAL 1BIT 14TSSOP
Dalam stok10090 pcs
1
Tube
74VHC74
2 µA
4 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 ~ 85°C (TA)
74VHC
RFQ
74ABT273ADB,118
NXP USA Inc.
IC FF D-TYPE SNGL 8BIT 20SSOP
Dalam stok14360 pcs
8
Tape & Reel (TR)
74ABT273
250 µA
3.5 pF
4.6ns @ 5V, 50pF
Positive Edge
32mA, 64mA
350 MHz
Master Reset
4.5V ~ 5.5V
1
20-SSOP
20-SSOP (0.209', 5.30mm Width)
Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74ABT
RFQ
74ABT574CSCX
onsemi
IC FF D-TYPE SNGL 8BIT 20SOIC
Dalam stok17500 pcs
8
Tape & Reel (TR)
74ABT574
50 µA
5 pF
5ns @ 5V, 50pF
Positive Edge
32mA, 64mA
200 MHz
Standard
4.5V ~ 5.5V
1
20-SOIC
20-SOIC (0.295', 7.50mm Width)
Tri-State, Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74ABT
RFQ
SN74LV174ANSR
Texas Instruments
IC FF D-TYPE SNGL 6BIT 16SO
Dalam stok104920 pcs
6
Tape & Reel (TR)
74LV174
20 µA
1.7 pF
9.2ns @ 5V, 50pF
Positive Edge
12mA, 12mA
180 MHz
Master Reset
2V ~ 5.5V
1
16-SO
16-SOIC (0.209", 5.30mm Width)
Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74LV
RFQ
MC10EP31D
onsemi
IC FLIP FLOP ECL SET/RESET 8SOIC
Dalam stok12142 pcs
1
Tube
MC10EP31
-
-
-
Positive Edge
-
3 GHz
Set(Preset) and Reset
3V ~ 5.5V
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
Complementary
D-Type
Surface Mount
-40°C ~ 85°C (TA)
10EP
RFQ
74F175DC
Rochester Electronics, LLC
F/FAST SERIES, 1 FUNC, POSITIVE
Dalam stok974 pcs
-
Bulk
74F175
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
*
RFQ
74LVX74TTR
STMicroelectronics
IC FF D-TYPE DUAL 1BIT 14TSSOP
Dalam stok11810 pcs
1
Tape & Reel (TR)
74LVX74
2 µA
4 pF
13.2ns @ 3.3V, 50pF
Positive Edge
4mA, 4mA
85 MHz
Set(Preset) and Reset
2V ~ 3.6V
2
14-TSSOP
14-TSSOP (0.173", 4.40mm Width)
Complementary
D-Type
Surface Mount
-55°C ~ 125°C (TA)
74LVX
RFQ
74ACT16374DLR
Texas Instruments
IC FF D-TYPE DUAL 8BIT 48SSOP
Dalam stok37229 pcs
8
Tape & Reel (TR)
74ACT16374
8 µA
4.5 pF
8.8ns @ 5V, 50pF
Positive Edge
24mA, 24mA
65 MHz
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)
74ACT
RFQ
74ACQ574SC
onsemi
IC FF D-TYPE SNGL 8BIT 20SOIC
Dalam stok3660 pcs
8
Tube
74ACQ574
40 µA
4.5 pF
8.5ns @ 5V, 50pF
Positive Edge
24mA, 24mA
90 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)
74ACQ
RFQ
74F378PC
onsemi
IC FF D-TYPE SNGL 6BIT 16DIP
Dalam stok17200 pcs
6
Tube
74F378
45 mA
-
7.5ns @ 5V, 50pF
Positive Edge
1mA, 20mA
100 MHz
Standard
4.5V ~ 5.5V
1
16-PDIP
16-DIP (0.300', 7.62mm)
Non-Inverted
D-Type
Through Hole
0°C ~ 70°C (TA)
74F
RFQ
54LS109DM
Texas Instruments
J-K FLIP-FLOP
Dalam stok109980 pcs
1
Bulk
54LS109
8 mA
-
35ns @ 5V, 50pF
Positive Edge
4mA
20 MHz
Set(Preset) and Reset
4.5V ~ 5.5V
2
16-CDIP
16-CDIP (0.300", 7.62mm)
Complementary
JK Type
Through Hole
-55°C ~ 125°C (TA)
54LS
RFQ
74ACT175SCX
onsemi
IC FF D-TYPE SNGL 4BIT 16SOIC
Dalam stok8640 pcs
4
Tape & Reel (TR)
74ACT175
40 µA
4.5 pF
11ns @ 5V, 50pF
Positive Edge
24mA, 24mA
236 MHz
Master Reset
4.5V ~ 5.5V
1
16-SOIC
16-SOIC (0.154", 3.90mm Width)
Complementary
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74ACT
RFQ
SN74ABT377DW
Texas Instruments
D FLIP-FLOP, ABT SERIES
Dalam stok36610 pcs
-
Tube
74ABT377
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
*
RFQ
MC10E151FNR2
onsemi
IC FF D-TYPE SNGL 6BIT 28PLCC
Dalam stok6970 pcs
6
Tape & Reel (TR)
MC10E151
-
-
-
Positive Edge
-
1.1 GHz
Master Reset
-4.2V ~ -5.7V
1
28-PLCC (11.51x11.51)
28-LCC (J-Lead)
Complementary
D-Type
Surface Mount
0°C ~ 85°C (TA)
10E
RFQ
MC100E431FN
onsemi
IC FF D-TYPE TRPL 1BIT 28PLCC
Dalam stok11480 pcs
1
Tube
MC100E431
132 mA
-
-
Positive, Negative
-
1.1 GHz
Set(Preset) and Reset
-4.2V ~ -5.7V
3
28-PLCC (11.51x11.51)
28-LCC (J-Lead)
Differential
D-Type
Surface Mount
0°C ~ 85°C (TA)
100E
RFQ
SN74LVC374APW
Texas Instruments
IC FF D-TYPE SNGL 8BIT 20TSSOP
Dalam stok86760 pcs
8
Tube
74LVC374
10 µA
4 pF
7ns @ 3.3V, 50pF
Positive Edge
24mA, 24mA
100 MHz
Standard
1.65V ~ 3.6V
1
20-TSSOP
20-TSSOP (0.173", 4.40mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74LVC
RFQ
74LVC1G74DP,125
Nexperia USA Inc.
IC FF D-TYPE SNGL 1BIT 8TSSOP
Dalam stok259500 pcs
1
Tape & Reel (TR)
74LVC1G74
40 µA
4 pF
4.1ns @ 5V, 50pF
Positive Edge
32mA, 32mA
200 MHz
Set(Preset) and Reset
1.65V ~ 5.5V
1
8-TSSOP
8-TSSOP, 8-MSOP (0.118', 3.00mm Width)
Complementary
D-Type
Surface Mount
-40°C ~ 125°C (TA)
74LVC
RFQ
MC10H176MELG
onsemi
IC FF D-TYPE SNGL 6BIT 16SOEIAJ
Dalam stok8030 pcs
6
Tape & Reel (TR)
MC10H176
112 mA
-
-
Positive Edge
-
250 MHz
Standard
-4.9V ~ -5.46V
1
16-SOEIAJ
16-SOIC (0.209', 5.30mm Width)
Non-Inverted
D-Type
Surface Mount
0°C ~ 75°C (TA)
10H
RFQ
74ACT574PC
Fairchild Semiconductor
IC FF D-TYPE SNGL 8BIT 20DIP
Dalam stok83580 pcs
8
Tube
74ACT574
40 µA
4.5 pF
11ns @ 5V, 50pF
Positive Edge
24mA, 24mA
110 MHz
Standard
4.5V ~ 5.5V
1
20-PDIP
20-DIP (0.300", 7.62mm)
Tri-State, Non-Inverted
D-Type
Through Hole
-40°C ~ 85°C (TA)
74ACT
RFQ
MM74HCT273WM
Fairchild Semiconductor
IC FF D-TYPE SNGL 8BIT 20SOIC
Dalam stok90320 pcs
8
Bulk
74HCT273
8 µA
6 pF
37ns @ 5V, 50pF
Positive Edge
4.8mA, 4.8mA
68 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)
74HCT
RFQ
SN74LS377N
Texas Instruments
IC FF D-TYPE SNGL 8BIT 20DIP
Dalam stok14930 pcs
8
Tube
74LS377
28 mA
-
27ns @ 5V, 15pF
Positive Edge
400µA, 8mA
40 MHz
Standard
4.75V ~ 5.25V
1
20-PDIP
20-DIP (0.300', 7.62mm)
Complementary
D-Type
Through Hole
0°C ~ 70°C (TA)
74LS
RFQ
MC10E131FN
onsemi
IC FF D-TYPE SNGL 4BIT 28PLCC
Dalam stok11620 pcs
4
Tube
MC10E131
70 mA
-
-
Positive Edge
-
1.4 GHz
Set(Preset) and Reset
-4.2V ~ -5.7V
1
28-PLCC (11.51x11.51)
28-LCC (J-Lead)
Complementary
D-Type
Surface Mount
0°C ~ 85°C (TA)
10E
RFQ
MM74HCT74MTCX
Fairchild Semiconductor
IC FF D-TYPE DUAL 1BIT 14TSSOP
Dalam stok235560 pcs
1
Bulk
74HCT74
2 µA
5 pF
35ns @ 5V, 50pF
Positive Edge
4.8mA, 4.8mA
27 MHz
Set(Preset) and Reset
4.5V ~ 5.5V
2
14-TSSOP
14-TSSOP (0.173", 4.40mm Width)
Complementary
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74HCT
RFQ
M74LCX16374DTR2G
onsemi
IC FF D-TYPE DUAL 8BIT 14TSSOP
Dalam stok45380 pcs
8
Tape & Reel (TR)
74LCX16374
10 µA
-
6.2ns @ 3.3V, 50pF
Positive Edge
24mA, 24mA
170 MHz
Standard
2V ~ 3.6V
2
48-TSSOP
48-TFSOP (0.240", 6.10mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
-55°C ~ 125°C (TA)
74LCX
RFQ
74F374SJ
Fairchild Semiconductor
IC FF D-TYPE SNGL 8BIT 20SOP
Dalam stok96270 pcs
8
Tube
74F374
86 mA
-
8.5ns @ 5V, 50pF
Positive Edge
3mA, 24mA
140 MHz
Standard
4.5V ~ 5.5V
1
20-SOP
20-SOIC (0.209", 5.30mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
0°C ~ 70°C (TA)
74F
RFQ
MC14076BCPG
onsemi
IC FF D-TYPE SNGL 4BIT 16DIP
Dalam stok16090 pcs
4
Tube
MC14076
20 µA
5 pF
180ns @ 15V, 50pF
Positive Edge
8.8mA, 8.8mA
12 MHz
Master Reset
3V ~ 18V
1
16-PDIP
16-DIP (0.300", 7.62mm)
Tri-State, Non-Inverted
D-Type
Through Hole
-55°C ~ 125°C (TA)
4000B
RFQ
74ACT109PC
Fairchild Semiconductor
IC FF JK TYPE DUAL 1BIT 16DIP
Dalam stok66560 pcs
1
Tube
74ACT109
20 µA
4.5 pF
11ns @ 5V, 50pF
Positive Edge
24mA, 24mA
210 MHz
Set(Preset) and Reset
4.5V ~ 5.5V
2
16-PDIP
16-DIP (0.300", 7.62mm)
Complementary
JK Type
Through Hole
-40°C ~ 85°C (TA)
74ACT
RFQ
SN74F112D
Texas Instruments
IC FF JK TYPE DUAL 1BIT 16SOIC
Dalam stok61210 pcs
1
Tube
74F112
19 mA
-
6.5ns @ 5V, 50pF
Negative Edge
1mA, 20mA
130 MHz
Set(Preset) and Reset
4.5V ~ 5.5V
2
16-SOIC
16-SOIC (0.154", 3.90mm Width)
Complementary
JK Type
Surface Mount
0°C ~ 70°C (TA)
74F
RFQ
74VHC374MTC
onsemi
IC FF D-TYPE SNGL 8BIT 20TSSOP
Dalam stok78720 pcs
8
Tube
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
74ACT11374DWR
Texas Instruments
IC FF D-TYPE SNGL 8BIT 20SOIC
Dalam stok14400 pcs
8
Tape & Reel (TR)
74ACT11374
8 µA
4 pF
11.3ns @ 5V, 50pF
Positive Edge
24mA, 24mA
70 MHz
Standard
4.5V ~ 5.5V
1
24-SOIC
24-SOIC (0.295", 7.50mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74ACT
RFQ
SN74LS175N
Texas Instruments
IC FF D-TYPE SNGL 4BIT 16DIP
Dalam stok65040 pcs
4
Tube
74LS175
18 mA
-
25ns @ 5V, 15pF
Positive Edge
400µA, 8mA
40 MHz
Master Reset
4.75V ~ 5.25V
1
16-PDIP
16-DIP (0.300', 7.62mm)
Complementary
D-Type
Through Hole
0°C ~ 70°C (TA)
74LS
RFQ
74LCX74MX
onsemi
IC FF D-TYPE DUAL 1BIT 14SOIC
Dalam stok7270 pcs
1
Tape & Reel (TR)
74LCX74
10 µA
7 pF
7ns @ 3.3V, 50pF
Positive Edge
24mA, 24mA
150 MHz
Set(Preset) and Reset
2V ~ 3.6V
2
14-SOIC
14-SOIC (0.154', 3.90mm Width)
Complementary
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74LCX
RFQ
74ACT11374DW
Texas Instruments
IC FF D-TYPE SNGL 8BIT 20SOIC
Dalam stok13330 pcs
8
Tube
74ACT11374
8 µA
4 pF
11.3ns @ 5V, 50pF
Positive Edge
24mA, 24mA
70 MHz
Standard
4.5V ~ 5.5V
1
24-SOIC
24-SOIC (0.295', 7.50mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74ACT
RFQ
SN74LVC74ADR
Texas Instruments
IC FF D-TYPE DUAL 1BIT 14SOIC
Dalam stok218130 pcs
1
Tape & Reel (TR)
74LVC74
10 µA
5 pF
5.2ns @ 3.3V, 50pF
Positive Edge
24mA, 24mA
150 MHz
Set(Preset) and Reset
1.65V ~ 3.6V
2
14-SOIC
14-SOIC (0.154", 3.90mm Width)
Complementary
D-Type
Surface Mount
-40°C ~ 125°C (TA)
74LVC
RFQ
74AC74MTR
STMicroelectronics
IC FF D-TYPE DUAL 1BIT 14SOP
Dalam stok15010 pcs
1
Tape & Reel (TR)
74AC74
2 µA
3 pF
10ns @ 5V, 50pF
Positive Edge
24mA, 24mA
300 MHz
Set(Preset) and Reset
2V ~ 6V
2
14-SOP
14-SOIC (0.154", 3.90mm Width)
Complementary
D-Type
Surface Mount
-55°C ~ 125°C (TA)
74AC
RFQ
CD74HC73M96
Texas Instruments
IC FF JK TYPE DUAL 1BIT 14SOIC
Dalam stok129150 pcs
1
Tape & Reel (TR)
74HC73
4 µA
10 pF
28ns @ 6V, 50pF
Negative Edge
5.2mA, 5.2mA
60 MHz
Reset
2V ~ 6V
2
14-SOIC
14-SOIC (0.154", 3.90mm Width)
Complementary
JK Type
Surface Mount
-55°C ~ 125°C (TA)
74HC
RFQ
74S74PC
Texas Instruments
D FLIP-FLOP
Dalam stok135080 pcs
1
Bulk
74S74
50 mA
-
11ns @ 5V, 15pF
Positive Edge
-
75 MHz
Set(Preset) and Reset
4.75V ~ 5.25V
2
14-DIP
14-DIP (0.300", 7.62mm)
Complementary
D-Type
Through Hole
0°C ~ 70°C (TA)
74S
RFQ
74F374SJ
onsemi
IC FF D-TYPE SNGL 8BIT 20SOP
Dalam stok15570 pcs
8
Tube
74F374
86 mA
-
8.5ns @ 5V, 50pF
Positive Edge
3mA, 24mA
140 MHz
Standard
4.5V ~ 5.5V
1
20-SOP
20-SOIC (0.209', 5.30mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
0°C ~ 70°C (TA)
74F
RFQ
SN74ABT162823ADLR
Texas Instruments
IC FF D-TYPE DUAL 9BIT 56SSOP
Dalam stok7690 pcs
9
Tape & Reel (TR)
74ABT162823
500 µA
3.5 pF
6.2ns @ 5V, 50pF
Positive Edge
12mA, 12mA
150 MHz
Master Reset
4.5V ~ 5.5V
2
56-SSOP
56-BSSOP (0.295', 7.50mm Width)
Tri-State, Non-Inverted
D-Type
Surface Mount
-40°C ~ 85°C (TA)
74ABT
RFQ
MC100EP451FAG
onsemi
IC FF D-TYPE SNGL 6BIT 32LQFP
Dalam stok1754 pcs
6
Tray
MC100EP451
135 mA
-
-
Positive Edge
-
3 GHz
Master Reset
-3V ~ -5.5V
1
32-LQFP (7x7)
32-LQFP
Complementary
D-Type
Surface Mount
-40°C ~ 85°C (TA)
100EP
RFQ
MC14013BDR2
onsemi
IC FLIP FLOP DUAL CMOS 14SOIC
Dalam stok17260 pcs
1
Bulk
MC14013
-
-
-
Positive Edge
-
14 MHz
Set(Preset) and Reset
3V ~ 18V
2
14-SOIC
14-SOIC (0.154", 3.90mm Width)
Complementary
D-Type
Surface Mount
-55°C ~ 125°C (TA)
4000B
RFQ