|
|
實時時鐘 Serial I2C bus RTC
- M41T82RM6F
- STMicroelectronics
-
1:
HK$35.67
-
4,527庫存量
-
2,500預期4/1/2027
|
Mouser 元件編號
511-M41T82RM6F
|
STMicroelectronics
|
實時時鐘 Serial I2C bus RTC
|
|
4,527庫存量
2,500預期4/1/2027
|
|
|
HK$35.67
|
|
|
HK$26.96
|
|
|
HK$24.82
|
|
|
HK$22.44
|
|
|
HK$19.07
|
|
|
檢視
|
|
|
HK$21.29
|
|
|
HK$20.96
|
|
|
HK$20.30
|
|
|
HK$18.99
|
|
最少： 1
倍數： 1
:
2,500
|
|
|
Serial
|
YY-MM-DD-dd
|
HH:MM:SS:hh (12 hr, 24 hr)
|
32 B
|
SOIC-8
|
Backup Switching
|
2.7 V
|
5.5 V
|
- 40 C
|
+ 85 C
|
M41T82
|
SMD/SMT
|
Reel, Cut Tape, MouseReel
|
|
|
|
實時時鐘 Serial I2C bus RTC
- M41T82SM6F
- STMicroelectronics
-
1:
HK$26.80
-
1,678庫存量
-
5,000預期16/9/2026
|
Mouser 元件編號
511-M41T82SM6F
|
STMicroelectronics
|
實時時鐘 Serial I2C bus RTC
|
|
1,678庫存量
5,000預期16/9/2026
|
|
|
HK$26.80
|
|
|
HK$20.06
|
|
|
HK$18.41
|
|
|
HK$16.52
|
|
|
檢視
|
|
|
HK$13.15
|
|
|
HK$15.62
|
|
|
HK$15.21
|
|
|
HK$14.80
|
|
|
HK$13.15
|
|
最少： 1
倍數： 1
:
2,500
|
|
|
Serial
|
YY-MM-DD-dd
|
HH:MM:SS:hh (12 hr, 24 hr)
|
32 B
|
SOIC-8
|
Backup Switching
|
3 V
|
5.5 V
|
- 40 C
|
+ 85 C
|
M41T82
|
SMD/SMT
|
Reel, Cut Tape, MouseReel
|
|
|
|
實時時鐘 SPI RTC 32.768 kHz 365nA 2.0V to 5.5V
- M41T93RQA6F
- STMicroelectronics
-
1:
HK$69.05
-
1,145庫存量
|
Mouser 元件編號
511-M41T93RQA6F
|
STMicroelectronics
|
實時時鐘 SPI RTC 32.768 kHz 365nA 2.0V to 5.5V
|
|
1,145庫存量
|
|
|
HK$69.05
|
|
|
HK$53.35
|
|
|
HK$49.40
|
|
|
HK$45.13
|
|
|
HK$40.61
|
|
|
檢視
|
|
|
HK$42.42
|
|
|
HK$38.96
|
|
|
報價
|
|
最少： 1
倍數： 1
:
1,000
|
|
|
SPI
|
YY-MM-DD-dd
|
HH:MM:SS:hh (12 hr, 24 hr)
|
32 B
|
QFN-16
|
Backup Switching
|
2.7 V
|
5.5 V
|
- 40 C
|
+ 85 C
|
M41T93
|
SMD/SMT
|
Reel, Cut Tape, MouseReel
|
|
|
|
實時時鐘 Serial SPI bus RTC
- M41T93ZMY6F
- STMicroelectronics
-
1:
HK$87.71
-
870庫存量
|
Mouser 元件編號
511-M41T93ZMY6F
|
STMicroelectronics
|
實時時鐘 Serial SPI bus RTC
|
|
870庫存量
|
|
|
HK$87.71
|
|
|
HK$68.47
|
|
|
HK$63.71
|
|
|
HK$58.44
|
|
|
檢視
|
|
|
HK$53.02
|
|
|
HK$55.90
|
|
|
HK$55.32
|
|
|
HK$53.02
|
|
|
報價
|
|
最少： 1
倍數： 1
:
1,000
|
|
|
SPI
|
YY-MM-DD-dd
|
HH:MM:SS:hh (12 hr, 24 hr)
|
32 B
|
SOX-18
|
Backup Switching
|
2.38 V
|
5.5 V
|
- 40 C
|
+ 85 C
|
M41T93
|
SMD/SMT
|
Reel, Cut Tape, MouseReel
|
|
|
|
實時時鐘 Serial 512 (64x8)
- M41T94MH6F
- STMicroelectronics
-
1:
HK$91.41
-
1,952庫存量
|
Mouser 元件編號
511-M41T94MH6F
|
STMicroelectronics
|
實時時鐘 Serial 512 (64x8)
|
|
1,952庫存量
|
|
|
HK$91.41
|
|
|
HK$71.68
|
|
|
HK$66.50
|
|
|
HK$61.40
|
|
|
HK$53.92
|
|
|
檢視
|
|
|
HK$58.94
|
|
|
HK$54.66
|
|
|
HK$52.20
|
|
最少： 1
倍數： 1
:
936
|
|
|
SPI
|
YY-MM-DD-dd
|
HH:MM:SS:hh (12 hr, 24 hr)
|
64 B
|
SOX-28
|
Backup Switching
|
2.7 V
|
5.5 V
|
- 40 C
|
+ 85 C
|
M41T94
|
SMD/SMT
|
Reel, Cut Tape, MouseReel
|
|
|
|
實時時鐘 16K (2Kx8) 150ns
- M48T02-150PC1
- STMicroelectronics
-
1:
HK$249.07
-
698庫存量
|
Mouser 元件編號
511-M48T0215PC1
|
STMicroelectronics
|
實時時鐘 16K (2Kx8) 150ns
|
|
698庫存量
|
|
|
HK$249.07
|
|
|
HK$196.70
|
|
|
HK$183.47
|
|
|
HK$172.62
|
|
|
檢視
|
|
|
HK$170.65
|
|
|
報價
|
|
最少： 1
倍數： 1
|
|
|
Parallel
|
YY-MM-DD-dd
|
HH:MM:SS (24 hr)
|
2 kB
|
PCDIP-24
|
Integrated Battery
|
4.75 V
|
5.5 V
|
0 C
|
+ 70 C
|
M48T02
|
Through Hole
|
Tube
|
|
|
|
實時時鐘 16K (2Kx8) 70ns
- M48T02-70PC1
- STMicroelectronics
-
1:
HK$248.66
-
446庫存量
|
Mouser 元件編號
511-M48T0270PC1
|
STMicroelectronics
|
實時時鐘 16K (2Kx8) 70ns
|
|
446庫存量
|
|
|
HK$248.66
|
|
|
HK$197.61
|
|
|
HK$186.92
|
|
|
HK$173.69
|
|
|
檢視
|
|
|
HK$167.69
|
|
|
HK$160.13
|
|
|
報價
|
|
最少： 1
倍數： 1
|
|
|
Parallel
|
YY-MM-DD-dd
|
HH:MM:SS (24 hr)
|
2 kB
|
PCDIP-24
|
Integrated Battery
|
4.75 V
|
5.5 V
|
0 C
|
+ 70 C
|
M48T02
|
Through Hole
|
Tube
|
|
|
|
實時時鐘 64K (8Kx8) 150ns
- M48T08-150PC1
- STMicroelectronics
-
1:
HK$323.70
-
362庫存量
|
Mouser 元件編號
511-M48T0815PC1
|
STMicroelectronics
|
實時時鐘 64K (8Kx8) 150ns
|
|
362庫存量
|
|
|
HK$323.70
|
|
|
HK$261.31
|
|
|
HK$245.28
|
|
|
HK$234.19
|
|
|
檢視
|
|
|
HK$232.79
|
|
|
報價
|
|
最少： 1
倍數： 1
|
|
|
Parallel
|
YY-MM-DD-dd
|
HH:MM:SS (24 hr)
|
8 kB
|
PCDIP-28
|
Integrated Battery
|
4.75 V
|
5.5 V
|
0 C
|
+ 70 C
|
M48T08
|
Through Hole
|
Tube
|
|
|
|
實時時鐘 16K (2Kx8) 70ns
- M48T12-70PC1
- STMicroelectronics
-
1:
HK$345.98
-
305庫存量
-
560預期27/8/2026
|
Mouser 元件編號
511-M48T1270PC1
|
STMicroelectronics
|
實時時鐘 16K (2Kx8) 70ns
|
|
305庫存量
560預期27/8/2026
|
|
|
HK$345.98
|
|
|
HK$275.70
|
|
|
HK$264.36
|
|
|
HK$247.83
|
|
|
檢視
|
|
|
HK$240.02
|
|
|
報價
|
|
最少： 1
倍數： 1
|
|
|
Parallel
|
YY-MM-DD-dd
|
HH:MM:SS (24 hr)
|
8 kB
|
PCDIP-24
|
Integrated Battery
|
4.5 V
|
5.5 V
|
0 C
|
+ 70 C
|
M48T12
|
Through Hole
|
Tube
|
|
|
|
實時時鐘 64K (8Kx8) 100ns
- M48T18-100PC1
- STMicroelectronics
-
1:
HK$374.50
-
184庫存量
-
1,200預期28/9/2026
|
Mouser 元件編號
511-M48T1810PC1
|
STMicroelectronics
|
實時時鐘 64K (8Kx8) 100ns
|
|
184庫存量
1,200預期28/9/2026
|
|
|
HK$374.50
|
|
|
HK$304.63
|
|
|
HK$286.71
|
|
|
HK$278.49
|
|
最少： 1
倍數： 1
|
|
|
Parallel
|
YY-MM-DD-dd
|
HH:MM:SS (24 hr)
|
8 kB
|
PCDIP-28
|
Integrated Battery
|
4.5 V
|
5.5 V
|
0 C
|
+ 70 C
|
M48T18
|
Through Hole
|
Tube
|
|
|
|
實時時鐘 256K (32Kx8) 70ns
- M48T35-70PC1
- STMicroelectronics
-
1:
HK$448.48
-
293庫存量
|
Mouser 元件編號
511-M48T3570PC1
|
STMicroelectronics
|
實時時鐘 256K (32Kx8) 70ns
|
|
293庫存量
|
|
|
HK$448.48
|
|
|
HK$365.38
|
|
|
HK$343.10
|
|
|
HK$323.70
|
|
|
檢視
|
|
|
HK$323.54
|
|
|
報價
|
|
最少： 1
倍數： 1
|
|
|
Parallel
|
YY-MM-DD-dd
|
HH:MM:SS (24 hr)
|
32 kB
|
PCDIP-28
|
Integrated Battery
|
4.75 V
|
5.5 V
|
0 C
|
+ 70 C
|
M48T35
|
Through Hole
|
Tube
|
|
|
|
實時時鐘 256K (32Kx8) 70ns
- M48T35Y-70PC1
- STMicroelectronics
-
1:
HK$420.21
-
118庫存量
-
480預期22/9/2026
|
Mouser 元件編號
511-M48T35Y70PC1
|
STMicroelectronics
|
實時時鐘 256K (32Kx8) 70ns
|
|
118庫存量
480預期22/9/2026
|
|
|
HK$420.21
|
|
|
HK$340.31
|
|
|
HK$319.26
|
|
|
HK$305.87
|
|
|
HK$289.02
|
|
最少： 1
倍數： 1
|
|
|
Parallel
|
YY-MM-DD-dd
|
HH:MM:SS (24 hr)
|
32 kB
|
PCDIP-28
|
Integrated Battery
|
4.5 V
|
5.5 V
|
0 C
|
+ 70 C
|
M48T35Y
|
Through Hole
|
Tube
|
|
|
|
實時時鐘 64K (8Kx8) 70ns
- M48T58-70PC1
- STMicroelectronics
-
1:
HK$393.41
-
200庫存量
|
Mouser 元件編號
511-M48T5870PC1
|
STMicroelectronics
|
實時時鐘 64K (8Kx8) 70ns
|
|
200庫存量
|
|
|
HK$393.41
|
|
|
HK$320.09
|
|
|
HK$300.77
|
|
|
HK$286.06
|
|
|
檢視
|
|
|
HK$270.19
|
|
|
報價
|
|
最少： 1
倍數： 1
|
|
|
Parallel
|
YY-MM-DD-dd
|
HH:MM:SS (24 hr)
|
8 kB
|
PCDIP-28
|
Integrated Battery
|
4.75 V
|
5.5 V
|
0 C
|
+ 70 C
|
M48T58
|
Through Hole
|
Tube
|
|
|
|
實時時鐘 64K (8Kx8) 70ns
- M48T58Y-70PC1
- STMicroelectronics
-
1:
HK$309.15
-
216庫存量
-
240預期14/9/2026
|
Mouser 元件編號
511-M48T58Y70PC1
|
STMicroelectronics
|
實時時鐘 64K (8Kx8) 70ns
|
|
216庫存量
240預期14/9/2026
|
|
|
HK$309.15
|
|
|
HK$249.39
|
|
|
HK$234.11
|
|
|
HK$223.50
|
|
|
檢視
|
|
|
HK$204.10
|
|
|
HK$203.77
|
|
|
報價
|
|
最少： 1
倍數： 1
|
|
|
Parallel
|
YY-MM-DD-dd
|
HH:MM:SS (24 hr)
|
8 kB
|
PCDIP-28
|
Integrated Battery
|
4.5 V
|
5.5 V
|
0 C
|
+ 70 C
|
M48T58Y
|
Through Hole
|
Tube
|
|
|
|
實時時鐘 Serial I2C bus RTC
- M41T83RMY6F
- STMicroelectronics
-
1:
HK$47.27
-
334庫存量
|
Mouser 元件編號
511-M41T83RMY6F
|
STMicroelectronics
|
實時時鐘 Serial I2C bus RTC
|
|
334庫存量
|
|
|
HK$47.27
|
|
|
HK$36.00
|
|
|
HK$33.21
|
|
|
HK$30.17
|
|
|
HK$26.47
|
|
|
檢視
|
|
|
HK$28.69
|
|
|
HK$28.03
|
|
|
HK$25.89
|
|
|
報價
|
|
最少： 1
倍數： 1
:
1,000
|
|
|
Serial 2-Wire, I2C
|
YY-MM-DD-dd
|
HH:MM:SS:hh (12 hr, 24 hr)
|
32 B
|
SOX-18
|
Backup Switching
|
2.7 V
|
5.5 V
|
- 40 C
|
+ 85 C
|
M41T83
|
SMD/SMT
|
Reel, Cut Tape, MouseReel
|
|
|
|
實時時鐘 Serial I2C bus RTC
- M41T83SMY6F
- STMicroelectronics
-
1:
HK$41.92
-
249庫存量
-
1,000預期11/11/2026
|
Mouser 元件編號
511-M41T83SMY6F
|
STMicroelectronics
|
實時時鐘 Serial I2C bus RTC
|
|
249庫存量
1,000預期11/11/2026
|
|
|
HK$41.92
|
|
|
HK$31.98
|
|
|
HK$29.35
|
|
|
HK$26.47
|
|
|
HK$21.70
|
|
|
檢視
|
|
|
HK$25.15
|
|
|
HK$24.99
|
|
|
HK$21.21
|
|
最少： 1
倍數： 1
:
1,000
|
|
|
Serial 2-Wire, I2C
|
YY-MM-DD-dd
|
HH:MM:SS:hh (12 hr, 24 hr)
|
32 B
|
SOX-18
|
Backup Switching
|
3 V
|
5.5 V
|
- 40 C
|
+ 85 C
|
M41T83
|
SMD/SMT
|
Reel, Cut Tape, MouseReel
|
|
|
|
實時時鐘 Serial SPI bus RTC
- M41T93SMY6F
- STMicroelectronics
-
1:
HK$79.41
-
148庫存量
-
1,000預期16/11/2026
|
Mouser 元件編號
511-M41T93SMY6F
|
STMicroelectronics
|
實時時鐘 Serial SPI bus RTC
|
|
148庫存量
1,000預期16/11/2026
|
|
|
HK$79.41
|
|
|
HK$61.65
|
|
|
HK$57.21
|
|
|
HK$52.36
|
|
|
HK$47.35
|
|
|
檢視
|
|
|
HK$50.22
|
|
|
HK$49.40
|
|
|
HK$44.31
|
|
|
報價
|
|
最少： 1
倍數： 1
:
1,000
|
|
|
SPI
|
YY-MM-DD-dd
|
HH:MM:SS:hh (12 hr, 24 hr)
|
32 B
|
SOX-18
|
Backup Switching
|
3 V
|
5.5 V
|
- 40 C
|
+ 85 C
|
M41T93
|
SMD/SMT
|
Reel, Cut Tape, MouseReel
|
|
|
|
實時時鐘 2.0-5.5V 512 (64x8)
- M41T81SM6F
- STMicroelectronics
-
1:
HK$23.26
-
18,995在途量
|
Mouser 元件編號
511-M41T81SM6F
|
STMicroelectronics
|
實時時鐘 2.0-5.5V 512 (64x8)
|
|
18,995在途量
在途量:
3,995 預期3/9/2026
7,500 預期9/10/2026
7,500 預期19/7/2027
|
|
|
HK$23.26
|
|
|
HK$17.59
|
|
|
HK$16.28
|
|
|
HK$14.80
|
|
|
檢視
|
|
|
HK$12.66
|
|
|
HK$14.06
|
|
|
HK$13.73
|
|
|
HK$13.15
|
|
|
HK$12.66
|
|
最少： 1
倍數： 1
:
2,500
|
|
|
I2C
|
YY-MM-DD-dd
|
HH:MM:SS:hh (12 hr, 24 hr)
|
20 B
|
SOIC-8
|
Backup Switching
|
2.7 V
|
5.5 V
|
- 40 C
|
+ 85 C
|
M41T81S
|
SMD/SMT
|
Reel, Cut Tape, MouseReel
|
|
|
|
實時時鐘 Battery Swtchovr-RTC
- M41T83RQA6F
- STMicroelectronics
-
1:
HK$38.06
-
9,800在途量
|
Mouser 元件編號
511-M41T83RQA6F
|
STMicroelectronics
|
實時時鐘 Battery Swtchovr-RTC
|
|
9,800在途量
在途量:
1,800 預期28/12/2026
8,000 預期11/1/2027
|
|
|
HK$38.06
|
|
|
HK$29.26
|
|
|
HK$26.80
|
|
|
HK$24.66
|
|
|
檢視
|
|
|
HK$21.13
|
|
|
HK$23.51
|
|
|
HK$23.18
|
|
|
HK$21.13
|
|
最少： 1
倍數： 1
:
1,000
|
|
|
Serial 2-Wire, I2C
|
YY-MM-DD-dd
|
HH:MM:SS:hh (12 hr, 24 hr)
|
32 B
|
QFN-16
|
Backup Switching
|
2.7 V
|
5.5 V
|
- 40 C
|
+ 85 C
|
M41T83
|
SMD/SMT
|
Reel, Cut Tape, MouseReel
|
|
|
|
實時時鐘 Serial 512 (64x8)
- M41T94MQ6F
- STMicroelectronics
-
1:
HK$44.88
-
7,972在途量
|
Mouser 元件編號
511-M41T94MQ6F
|
STMicroelectronics
|
實時時鐘 Serial 512 (64x8)
|
|
7,972在途量
在途量:
2,972 預期31/8/2026
5,000 預期28/4/2027
|
|
|
HK$44.88
|
|
|
HK$33.78
|
|
|
HK$30.99
|
|
|
HK$27.87
|
|
|
檢視
|
|
|
HK$25.48
|
|
|
HK$26.55
|
|
|
HK$25.81
|
|
|
HK$25.48
|
|
|
HK$25.48
|
|
最少： 1
倍數： 1
:
2,500
|
|
|
Serial
|
YY-MM-DD-dd
|
HH:MM:SS:hh (12 hr, 24 hr)
|
64 B
|
SO-16
|
Backup Switching
|
2.7 V
|
5.5 V
|
- 40 C
|
+ 85 C
|
M41T94
|
SMD/SMT
|
Reel, Cut Tape, MouseReel
|
|
|
|
實時時鐘 Serial Access 實時時鐘
- M41T81SMY6F
- STMicroelectronics
-
1:
HK$82.20
-
2,000在途量
|
Mouser 元件編號
511-M41T81SMY6F
|
STMicroelectronics
|
實時時鐘 Serial Access 實時時鐘
|
|
2,000在途量
|
|
|
HK$82.20
|
|
|
HK$64.03
|
|
|
HK$59.43
|
|
|
HK$54.50
|
|
|
HK$49.40
|
|
|
檢視
|
|
|
HK$52.03
|
|
|
HK$51.46
|
|
|
HK$47.84
|
|
|
報價
|
|
最少： 1
倍數： 1
:
1,000
|
|
|
I2C
|
YY-MM-DD-dd
|
HH:MM:SS:hh (12 hr, 24 hr)
|
20 B
|
SOX-18
|
Backup Switching
|
2.7 V
|
5.5 V
|
- 40 C
|
+ 85 C
|
M41T81S
|
SMD/SMT
|
Reel, Cut Tape, MouseReel
|
|
|
|
實時時鐘 Serial I2C bus RTC
- M41T83SQA6F
- STMicroelectronics
-
1:
HK$36.41
-
3,750預期27/8/2026
|
Mouser 元件編號
511-M41T83SQA6F
|
STMicroelectronics
|
實時時鐘 Serial I2C bus RTC
|
|
3,750預期27/8/2026
|
|
|
HK$36.41
|
|
|
HK$27.62
|
|
|
HK$25.40
|
|
|
HK$23.02
|
|
|
檢視
|
|
|
HK$20.55
|
|
|
HK$21.87
|
|
|
HK$21.37
|
|
|
HK$20.55
|
|
最少： 1
倍數： 1
:
1,000
|
|
|
Serial 2-Wire, I2C
|
YY-MM-DD-dd
|
HH:MM:SS:hh (12 hr, 24 hr)
|
32 B
|
QFN-16
|
Backup Switching
|
3 V
|
5.5 V
|
- 40 C
|
+ 85 C
|
M41T83
|
SMD/SMT
|
Reel, Cut Tape, MouseReel
|
|
|
|
實時時鐘 256K (32Kx8) 70ns
- M48T37Y-70MH1F
- STMicroelectronics
-
1:
HK$182.81
-
28庫存量
|
Mouser 元件編號
511-M48T37Y-70MH1F
|
STMicroelectronics
|
實時時鐘 256K (32Kx8) 70ns
|
|
28庫存量
|
|
|
HK$182.81
|
|
|
HK$144.84
|
|
|
HK$135.38
|
|
|
HK$125.03
|
|
|
檢視
|
|
|
HK$117.05
|
|
|
HK$119.19
|
|
|
HK$117.05
|
|
|
HK$117.05
|
|
最少： 1
倍數： 1
:
936
|
|
|
Parallel
|
YY-MM-DD-dd
|
HH:MM:SS (24 hr)
|
256 kB
|
SOIC-44
|
Backup Switching
|
4.5 V
|
5.5 V
|
0 C
|
+ 70 C
|
M48T37Y
|
SMD/SMT
|
Reel, Cut Tape, MouseReel
|
|
|
|
實時時鐘 SERIAL RTC W/AUDIO
- M41T00AUDD1F
- STMicroelectronics
-
3,000:
HK$58.69
-
無庫存前置作業時間 30 週
|
Mouser 元件編號
511-M41T00AUDD1F
|
STMicroelectronics
|
實時時鐘 SERIAL RTC W/AUDIO
|
|
無庫存前置作業時間 30 週
|
|
最少： 3,000
倍數： 3,000
:
3,000
|
|
|
Serial 2-Wire, I2C
|
YY-MM-DD-dd
|
HH:MM:SS (24 hr)
|
8 B
|
DFN-16
|
Backup Switching
|
3 V
|
3.6 V
|
0 C
|
+ 70 C
|
M41T00AUD
|
SMD/SMT
|
Reel
|
|
|
|
實時時鐘 Serial I2C bus RTC
- M41T83ZQA6F
- STMicroelectronics
-
1:
HK$58.03
-
無庫存前置作業時間 30 週
|
Mouser 元件編號
511-M41T83ZQA6F
|
STMicroelectronics
|
實時時鐘 Serial I2C bus RTC
|
|
無庫存前置作業時間 30 週
|
|
|
HK$58.03
|
|
|
HK$44.55
|
|
|
HK$41.18
|
|
|
HK$37.48
|
|
|
檢視
|
|
|
HK$32.96
|
|
|
HK$35.76
|
|
|
HK$35.10
|
|
|
HK$32.96
|
|
最少： 1
倍數： 1
:
1,000
|
|
|
Serial
|
|
HH:MM:SS:hh (12 hr, 24 hr)
|
32 B
|
|
Backup Switching
|
2.38 V
|
5.5 V
|
- 40 C
|
+ 85 C
|
M41T83
|
SMD/SMT
|
Reel, Cut Tape, MouseReel
|
|
香港