|
|
類比開關IC 74HC2G66GT/SOT833/XSON8
- 74HC2G66GT,115
- Nexperia
-
1:
HK$2.06
-
19,332庫存量
|
Mouser 元件編號
771-74HC2G66GT,115
|
Nexperia
|
類比開關IC 74HC2G66GT/SOT833/XSON8
|
|
19,332庫存量
|
|
|
HK$2.06
|
|
|
HK$1.25
|
|
|
HK$0.986
|
|
|
HK$0.937
|
|
|
HK$0.814
|
|
|
檢視
|
|
|
HK$0.888
|
|
|
HK$0.847
|
|
|
HK$0.797
|
|
|
HK$0.732
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
XSON-8
|
2 Channel
|
2 x SPST
|
70 Ohms
|
2 V
|
10 V
|
|
|
16 ns
|
23 ns
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC SOT762-1 QUAD BILATERAL SW
- 74LVC4066BQ-Q100X
- Nexperia
-
1:
HK$6.17
-
9,285庫存量
|
Mouser 元件編號
771-74LVC4066BQQ100X
|
Nexperia
|
類比開關IC SOT762-1 QUAD BILATERAL SW
|
|
9,285庫存量
|
|
|
HK$6.17
|
|
|
HK$3.90
|
|
|
HK$3.83
|
|
|
HK$3.35
|
|
|
HK$2.73
|
|
|
檢視
|
|
|
HK$3.12
|
|
|
HK$2.99
|
|
|
HK$2.95
|
|
|
HK$2.66
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
DHVQFN-14
|
4 Channel
|
4 x SPST
|
45 Ohms
|
1.65 V
|
5.5 V
|
|
|
12.5 ns
|
11.5 ns
|
- 40 C
|
+ 125 C
|
AEC-Q100
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC SOT353-1 SPST DIGITAL SWITCH
- 74HC1G66GW-Q100H
- Nexperia
-
1:
HK$3.70
-
2,692庫存量
|
Mouser 元件編號
771-74HC1G66GW-Q100H
|
Nexperia
|
類比開關IC SOT353-1 SPST DIGITAL SWITCH
|
|
2,692庫存量
|
|
|
HK$3.70
|
|
|
HK$2.55
|
|
|
HK$1.61
|
|
|
HK$1.02
|
|
|
HK$0.419
|
|
|
檢視
|
|
|
HK$0.888
|
|
|
HK$0.403
|
|
|
HK$0.386
|
|
|
HK$0.378
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
TSSOP-5
|
|
|
|
|
|
|
|
|
|
|
|
AEC-Q100
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC SOT753-1 BILATERAL SWITCH
- 74LVC1G384GV-Q100H
- Nexperia
-
1:
HK$6.25
-
1,231庫存量
|
Mouser 元件編號
771-74LVC1G384GVQ100
|
Nexperia
|
類比開關IC SOT753-1 BILATERAL SWITCH
|
|
1,231庫存量
|
|
|
HK$6.25
|
|
|
HK$4.31
|
|
|
HK$2.73
|
|
|
HK$1.69
|
|
|
HK$0.699
|
|
|
檢視
|
|
|
HK$1.25
|
|
|
HK$0.674
|
|
|
HK$0.649
|
|
|
HK$0.641
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
SC-74A-5
|
|
|
|
|
|
|
|
|
|
|
|
AEC-Q100
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC 74HCT1G66GV/SOT753/SO5
- 74HCT1G66GV,125
- Nexperia
-
1:
HK$3.86
-
2,694庫存量
|
Mouser 元件編號
771-HCT1G66GV125
|
Nexperia
|
類比開關IC 74HCT1G66GV/SOT753/SO5
|
|
2,694庫存量
|
|
|
HK$3.86
|
|
|
HK$2.64
|
|
|
HK$1.68
|
|
|
HK$1.05
|
|
|
HK$0.436
|
|
|
檢視
|
|
|
HK$0.921
|
|
|
HK$0.419
|
|
|
HK$0.403
|
|
|
HK$0.395
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
SC-74A-5
|
1 Channel
|
1 x SPST
|
128 Ohms
|
4.5 V
|
5.5 V
|
|
|
36 ns
|
53 ns
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC SOT363-2 ANALOG SWITCH PREC
- XS5A1T4157GWH
- Nexperia
-
1:
HK$9.78
-
2,759庫存量
|
Mouser 元件編號
771-XS5A1T4157GWH
|
Nexperia
|
類比開關IC SOT363-2 ANALOG SWITCH PREC
|
|
2,759庫存量
|
|
|
HK$9.78
|
|
|
HK$6.74
|
|
|
HK$4.27
|
|
|
HK$2.64
|
|
|
HK$1.08
|
|
|
檢視
|
|
|
HK$1.95
|
|
|
HK$1.05
|
|
|
HK$1.00
|
|
|
HK$0.995
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
SOT-363-6
|
1 Channel
|
1 x SPDT
|
7.7 Ohms
|
4.5 V
|
5.5 V
|
|
|
|
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC SOT765-1 BILATERAL SWITCH
- 74LVC2G66DC-Q100H
- Nexperia
-
1:
HK$9.95
-
1,738庫存量
|
Mouser 元件編號
771-74LVC2G66DCQ100H
|
Nexperia
|
類比開關IC SOT765-1 BILATERAL SWITCH
|
|
1,738庫存量
|
|
|
HK$9.95
|
|
|
HK$7.07
|
|
|
HK$4.40
|
|
|
HK$3.03
|
|
|
HK$1.64
|
|
|
檢視
|
|
|
HK$2.55
|
|
|
HK$1.60
|
|
|
HK$1.54
|
|
|
HK$1.53
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
VSSOP-8
|
2 Channel
|
2 x SPST
|
15 Ohms
|
1.65 V
|
5.5 V
|
|
|
5 ns
|
6.5 ns
|
- 40 C
|
+ 125 C
|
AEC-Q100
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC SOT-1202 ANALOG SWITCH PREC
- XS3A1T5157GSH
- Nexperia
-
1:
HK$2.38
-
268庫存量
|
Mouser 元件編號
771-XS3A1T5157GSH
|
Nexperia
|
類比開關IC SOT-1202 ANALOG SWITCH PREC
|
|
268庫存量
|
|
|
HK$2.38
|
|
|
HK$1.45
|
|
|
HK$1.13
|
|
|
HK$0.896
|
|
|
HK$0.781
|
|
|
檢視
|
|
|
HK$0.855
|
|
|
HK$0.814
|
|
|
HK$0.748
|
|
|
HK$0.74
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
XSON-6
|
1 Channel
|
1 x SPDT
|
500 mOhms
|
1.4 V
|
4.3 V
|
|
|
100 ns
|
80 ns
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC 74LVC4066BQ/SOT762/DHVQFN14
- 74LVC4066BQ,115
- Nexperia
-
1:
HK$5.43
-
590庫存量
|
Mouser 元件編號
771-LVC4066BQ115
|
Nexperia
|
類比開關IC 74LVC4066BQ/SOT762/DHVQFN14
|
|
590庫存量
|
|
|
HK$5.43
|
|
|
HK$3.41
|
|
|
HK$2.76
|
|
|
HK$2.64
|
|
|
HK$2.39
|
|
|
檢視
|
|
|
HK$2.56
|
|
|
HK$2.13
|
|
|
HK$2.06
|
|
|
HK$1.85
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
DHVQFN-14
|
4 Channel
|
4 x SPST
|
15 Ohms
|
1.65 V
|
5.5 V
|
|
|
5 ns
|
6.5 ns
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC 74HCT4316PW/SOT403/TSSOP16
- 74HCT4316PW,118
- Nexperia
-
1:
HK$4.36
-
2,273庫存量
|
Mouser 元件編號
771-74HCT4316PW-T
|
Nexperia
|
類比開關IC 74HCT4316PW/SOT403/TSSOP16
|
|
2,273庫存量
|
|
|
HK$4.36
|
|
|
HK$2.98
|
|
|
HK$2.06
|
|
|
HK$1.97
|
|
|
HK$1.56
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
TSSOP-16
|
4 Channel
|
4 x SPST
|
135 Ohms
|
4.5 V
|
5.5 V
|
+/- 4.5 V
|
+/- 4.5 V
|
42 ns
|
46 ns
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC SOT552-1 DUAL SPDT DIGITAL SW
- 74LVC2G3157DPJ
- Nexperia
-
1:
HK$4.19
-
|
Mouser 元件編號
771-74LVC2G3157DPJ
|
Nexperia
|
類比開關IC SOT552-1 DUAL SPDT DIGITAL SW
|
|
|
|
|
HK$4.19
|
|
|
HK$2.65
|
|
|
HK$2.14
|
|
|
HK$2.04
|
|
|
HK$1.87
|
|
|
檢視
|
|
|
HK$1.98
|
|
|
HK$1.78
|
|
|
HK$1.74
|
|
|
HK$1.73
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
TSSOP-10
|
2 Channel
|
2 x SPDT
|
45 Ohms
|
1.65 V
|
5.5 V
|
|
|
26.5 ns
|
14.5 ns
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC NMUX1237GW/SOT363/SC-88
- NMUX1237GWH
- Nexperia
-
1:
HK$1.64
-
2,934庫存量
-
2,988在途量
-
新產品
|
Mouser 元件編號
771-NMUX1237GWH
新產品
|
Nexperia
|
類比開關IC NMUX1237GW/SOT363/SC-88
|
|
2,934庫存量
2,988在途量
|
|
|
HK$1.64
|
|
|
HK$1.00
|
|
|
HK$0.781
|
|
|
HK$0.74
|
|
|
HK$0.658
|
|
|
檢視
|
|
|
HK$0.707
|
|
|
HK$0.633
|
|
|
HK$0.608
|
|
|
HK$0.60
|
|
最少： 1
倍數： 1
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Reel, Cut Tape
|
|
|
|
類比開關IC 74LVC2G66GT/SOT833/XSON8
- 74LVC2G66GT,115
- Nexperia
-
1:
HK$1.89
-
23,954庫存量
-
10,000在途量
|
Mouser 元件編號
771-LVC2G66GT115
|
Nexperia
|
類比開關IC 74LVC2G66GT/SOT833/XSON8
|
|
23,954庫存量
10,000在途量
|
|
|
HK$1.89
|
|
|
HK$1.12
|
|
|
HK$0.88
|
|
|
HK$0.838
|
|
|
HK$0.773
|
|
|
檢視
|
|
|
HK$0.797
|
|
|
HK$0.773
|
|
|
HK$0.764
|
|
|
HK$0.682
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
XSON-8
|
2 Channel
|
2 x SPST
|
195 Ohms
|
1.65 V
|
5.5 V
|
|
|
5 ns
|
6.5 ns
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC SOT552-1 DUAL SPDT DIGITAL SW
- 74LVC2G3157DP-Q10J
- Nexperia
-
1:
HK$5.10
-
|
Mouser 元件編號
771-4LVC2G3157DPQ10J
|
Nexperia
|
類比開關IC SOT552-1 DUAL SPDT DIGITAL SW
|
|
|
|
|
HK$5.10
|
|
|
HK$3.25
|
|
|
HK$2.64
|
|
|
HK$2.52
|
|
|
HK$2.31
|
|
|
檢視
|
|
|
HK$2.47
|
|
|
HK$2.22
|
|
|
HK$2.16
|
|
|
HK$2.15
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
TSSOP-10
|
2 Channel
|
2 x SPDT
|
195 Ohms
|
1.65 V
|
5.5 V
|
|
|
26.5 ns
|
14.5 ns
|
- 40 C
|
+ 125 C
|
AEC-Q100
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC 74HC4066PW-Q100/SOT402/TSSOP14
- 74HC4066PW-Q100,11
- Nexperia
-
1:
HK$2.79
-
|
Mouser 元件編號
771-74HC4066PW-Q100
|
Nexperia
|
類比開關IC 74HC4066PW-Q100/SOT402/TSSOP14
|
|
|
|
|
HK$2.79
|
|
|
HK$1.71
|
|
|
HK$1.36
|
|
|
HK$1.30
|
|
|
HK$1.17
|
|
|
檢視
|
|
|
HK$1.24
|
|
|
HK$1.12
|
|
|
HK$1.09
|
|
|
HK$1.08
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
TSSOP-14
|
4 Channel
|
4 x SPST
|
128 Ohms
|
2 V
|
10 V
|
|
|
150 ns
|
225 ns
|
- 40 C
|
+ 125 C
|
AEC-Q100
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC 74HC4066PW/SOT402/TSSOP14
- 74HC4066PW,118
- Nexperia
-
1:
HK$2.38
-
22,495庫存量
|
Mouser 元件編號
771-74HC4066PW-T
|
Nexperia
|
類比開關IC 74HC4066PW/SOT402/TSSOP14
|
|
22,495庫存量
|
|
|
HK$2.38
|
|
|
HK$1.48
|
|
|
HK$1.17
|
|
|
HK$1.11
|
|
|
HK$1.00
|
|
|
檢視
|
|
|
HK$1.06
|
|
|
HK$0.954
|
|
|
HK$0.929
|
|
|
HK$0.921
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
TSSOP-14
|
4 Channel
|
4 x SPST
|
85 Ohms
|
2 V
|
10 V
|
|
|
30 ns
|
20 ns
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC 74HCT4066PW/SOT402/TSSOP14
- 74HCT4066PW,118
- Nexperia
-
1:
HK$3.45
-
90庫存量
|
Mouser 元件編號
771-74HCT4066PW-T
|
Nexperia
|
類比開關IC 74HCT4066PW/SOT402/TSSOP14
|
|
90庫存量
|
|
|
HK$3.45
|
|
|
HK$2.13
|
|
|
HK$1.41
|
|
|
HK$1.35
|
|
|
HK$1.22
|
|
|
檢視
|
|
|
HK$1.29
|
|
|
HK$1.17
|
|
|
HK$1.13
|
|
|
HK$1.12
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
TSSOP-14
|
4 Channel
|
4 x SPST
|
128 Ohms
|
4.5 V
|
5.5 V
|
|
|
36 ns
|
53 ns
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC 74LV4066D/SOT108/SO14
- 74LV4066D,118
- Nexperia
-
1:
HK$2.63
-
16,143庫存量
|
Mouser 元件編號
771-74LV4066D-T
|
Nexperia
|
類比開關IC 74LV4066D/SOT108/SO14
|
|
16,143庫存量
|
|
|
HK$2.63
|
|
|
HK$1.61
|
|
|
HK$1.28
|
|
|
HK$1.22
|
|
|
HK$1.10
|
|
|
檢視
|
|
|
HK$1.17
|
|
|
HK$1.05
|
|
|
HK$1.02
|
|
|
HK$1.01
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
SOIC-14
|
4 Channel
|
4 x SPST
|
47 Ohms
|
1 V
|
6 V
|
|
|
20 ns
|
34 ns
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC 74LVC2G66DC/SOT765/VSSOP8
- 74LVC2G66DC,125
- Nexperia
-
1:
HK$3.04
-
19,518庫存量
|
Mouser 元件編號
771-LVC2G66DC125
|
Nexperia
|
類比開關IC 74LVC2G66DC/SOT765/VSSOP8
|
|
19,518庫存量
|
|
|
HK$3.04
|
|
|
HK$1.90
|
|
|
HK$1.52
|
|
|
HK$1.44
|
|
|
HK$1.30
|
|
|
檢視
|
|
|
HK$1.38
|
|
|
HK$1.26
|
|
|
HK$1.21
|
|
|
HK$1.20
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
VSSOP-8
|
2 Channel
|
2 x SPST
|
195 Ohms
|
1.65 V
|
5.5 V
|
|
|
5 ns
|
6.5 ns
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC 74LVC2G66DP/SOT505/TSSOP8
- 74LVC2G66DP,125
- Nexperia
-
1:
HK$3.45
-
72,367庫存量
|
Mouser 元件編號
771-LVC2G66DP125
|
Nexperia
|
類比開關IC 74LVC2G66DP/SOT505/TSSOP8
|
|
72,367庫存量
|
|
|
HK$3.45
|
|
|
HK$2.11
|
|
|
HK$1.69
|
|
|
HK$1.60
|
|
|
HK$1.44
|
|
|
檢視
|
|
|
HK$1.53
|
|
|
HK$1.41
|
|
|
HK$1.31
|
|
|
HK$1.18
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
TSSOP-8
|
2 Channel
|
2 x SPST
|
195 Ohms
|
1.65 V
|
5.5 V
|
|
|
5 ns
|
6.5 ns
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC SOT-1202 ANALOG SWITCH PREC
- XS3A1T3157GSH
- Nexperia
-
1:
HK$1.97
-
121,227庫存量
|
Mouser 元件編號
771-XS3A1T3157GSH
|
Nexperia
|
類比開關IC SOT-1202 ANALOG SWITCH PREC
|
|
121,227庫存量
|
|
|
HK$1.97
|
|
|
HK$1.20
|
|
|
HK$0.945
|
|
|
HK$0.896
|
|
|
HK$0.781
|
|
|
檢視
|
|
|
HK$0.855
|
|
|
HK$0.814
|
|
|
HK$0.748
|
|
|
HK$0.74
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
XSON-6
|
1 Channel
|
1 x SPDT
|
500 mOhms
|
1.4 V
|
4.3 V
|
|
|
100 ns
|
80 ns
|
- 40 C
|
+ 125 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC SOT753-1 SPST DIGITAL SWITCH
- 74AHC1G66GV-Q100H
- Nexperia
-
1:
HK$1.40
-
150庫存量
|
Mouser 元件編號
771-74AHC1G66GVQ100H
|
Nexperia
|
類比開關IC SOT753-1 SPST DIGITAL SWITCH
|
|
150庫存量
|
|
|
HK$1.40
|
|
|
HK$0.855
|
|
|
HK$0.666
|
|
|
HK$0.633
|
|
|
HK$0.493
|
|
|
檢視
|
|
|
HK$0.60
|
|
|
HK$0.477
|
|
|
HK$0.452
|
|
|
HK$0.444
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
SOT-753-5
|
1 Channel
|
1 x SPST
|
110 Ohms
|
2 V
|
5.5 V
|
|
|
17 ns
|
17 ns
|
- 40 C
|
+ 125 C
|
AEC-Q100
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC SOT353-1 SPST DIGITAL SWITCH
- 74AHC1G66GW-Q100H
- Nexperia
-
1:
HK$1.23
-
29,178庫存量
|
Mouser 元件編號
771-74AHC1G66GWQ100H
|
Nexperia
|
類比開關IC SOT353-1 SPST DIGITAL SWITCH
|
|
29,178庫存量
|
|
|
HK$1.23
|
|
|
HK$0.723
|
|
|
HK$0.559
|
|
|
HK$0.534
|
|
|
HK$0.477
|
|
|
檢視
|
|
|
HK$0.501
|
|
|
HK$0.46
|
|
|
HK$0.444
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
TSSOP-5
|
1 Channel
|
1 x SPST
|
110 Ohms
|
2 V
|
5.5 V
|
|
|
17 ns
|
17 ns
|
- 40 C
|
+ 125 C
|
AEC-Q100
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC SOT753-1 SPST DIGITAL SWITCH
- 74HC1G66GV-Q100H
- Nexperia
-
1:
HK$1.97
-
2,376庫存量
|
Mouser 元件編號
771-74HC1G66GV-Q100H
|
Nexperia
|
類比開關IC SOT753-1 SPST DIGITAL SWITCH
|
|
2,376庫存量
|
|
|
HK$1.97
|
|
|
HK$1.19
|
|
|
HK$0.937
|
|
|
HK$0.699
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
SC-74A-5
|
1 Channel
|
1 x SPST
|
128 Ohms
|
2 V
|
10 V
|
|
|
150 ns
|
225 ns
|
- 40 C
|
+ 125 C
|
AEC-Q100
|
Reel, Cut Tape, MouseReel
|
|
|
|
類比開關IC SOT753-1 SPST DIGITAL SWITCH
- 74HCT1G66GV-Q100H
- Nexperia
-
1:
HK$1.40
-
2,928庫存量
|
Mouser 元件編號
771-74HCT1G66GVQ100H
|
Nexperia
|
類比開關IC SOT753-1 SPST DIGITAL SWITCH
|
|
2,928庫存量
|
|
|
HK$1.40
|
|
|
HK$0.838
|
|
|
HK$0.649
|
|
|
HK$0.617
|
|
|
HK$0.543
|
|
|
檢視
|
|
|
HK$0.584
|
|
|
HK$0.526
|
|
|
HK$0.501
|
|
|
HK$0.493
|
|
最少： 1
倍數： 1
|
|
|
SMD/SMT
|
SC-74A-5
|
1 Channel
|
1 x SPST
|
128 Ohms
|
4.5 V
|
5.5 V
|
|
|
150 ns
|
225 ns
|
- 40 C
|
+ 125 C
|
AEC-Q100
|
Reel, Cut Tape, MouseReel
|
|
香港