|
|
Taktsignalpuffer 3.3V ECL 1:2 Diff Fanout Buffer
- MC100LVEL11DR2G
- onsemi
-
1:
2.63 CHF
-
4 221Auf Lager
|
Mouser-Teilenr.
863-MC100LVEL11DR2G
|
onsemi
|
Taktsignalpuffer 3.3V ECL 1:2 Diff Fanout Buffer
|
|
4 221Auf Lager
|
|
|
2.63 CHF
|
|
|
2.13 CHF
|
|
|
2.00 CHF
|
|
|
1.87 CHF
|
|
|
Anzeigen
|
|
|
1.60 CHF
|
|
|
1.79 CHF
|
|
|
1.71 CHF
|
|
|
1.65 CHF
|
|
|
1.60 CHF
|
|
Min.: 1
Mult.: 1
:
2 500
|
|
|
2 Output
|
|
0.405 ns
|
|
SOIC-8
|
|
1 GHz
|
3 V
|
3.8 V
|
MC100LVEL11
|
- 40 C
|
+ 95 C
|
|
|
|
Taktsignalpuffer Clock / Data Multiplexer, 2.5 V / 3.3 V Dual 2:1 Differential, with LVPECL Out
- NB6L56MNTXG
- onsemi
-
1:
5.23 CHF
-
654Auf Lager
|
Mouser-Teilenr.
863-NB6L56MNTXG
|
onsemi
|
Taktsignalpuffer Clock / Data Multiplexer, 2.5 V / 3.3 V Dual 2:1 Differential, with LVPECL Out
|
|
654Auf Lager
|
|
|
5.23 CHF
|
|
|
4.41 CHF
|
|
|
4.22 CHF
|
|
|
3.97 CHF
|
|
|
Anzeigen
|
|
|
3.68 CHF
|
|
|
3.85 CHF
|
|
|
3.68 CHF
|
|
|
3.68 CHF
|
|
Min.: 1
Mult.: 1
:
1 000
|
|
|
2 Output
|
|
400 ps
|
|
QFN-32
|
|
2.5 GHz
|
2.375 V
|
3.6 V
|
NB6L56
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer 1:5 LVCMOS FANOUT BUFFER
- NB3F8L3005CMNTBG
- onsemi
-
1:
4.31 CHF
-
1 281Auf Lager
|
Mouser-Teilenr.
863-NB3F8L3005CMNTBG
|
onsemi
|
Taktsignalpuffer 1:5 LVCMOS FANOUT BUFFER
|
|
1 281Auf Lager
|
|
|
4.31 CHF
|
|
|
3.31 CHF
|
|
|
3.04 CHF
|
|
|
2.77 CHF
|
|
|
2.52 CHF
|
|
|
Anzeigen
|
|
|
2.64 CHF
|
|
|
2.35 CHF
|
|
Min.: 1
Mult.: 1
:
1 000
|
|
|
5 Output
|
200 MHz
|
|
LVCMOS
|
QFN-24
|
HCSL, LVDS, LVPECL, SSTL
|
50 MHz
|
1.35 V
|
3.465 V
|
NB3F8L3005C
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer 1.8V/2.5V/3.3 V BUFFER
- NB3H83905CDTR2G
- onsemi
-
1:
3.33 CHF
-
2 021Auf Lager
|
Mouser-Teilenr.
863-NB3H83905CDTR2G
|
onsemi
|
Taktsignalpuffer 1.8V/2.5V/3.3 V BUFFER
|
|
2 021Auf Lager
|
|
|
3.33 CHF
|
|
|
2.74 CHF
|
|
|
2.59 CHF
|
|
|
2.42 CHF
|
|
|
Anzeigen
|
|
|
2.08 CHF
|
|
|
2.30 CHF
|
|
|
2.23 CHF
|
|
|
2.09 CHF
|
|
|
2.08 CHF
|
|
Min.: 1
Mult.: 1
:
2 500
|
|
|
|
|
|
|
TSSOP-16
|
|
|
1.8 V
|
3.3 V
|
NB3H83905C
|
|
+ 85 C
|
|
|
|
Taktsignalpuffer 2 CH CLOCK FANOUT BUFFER
- NB3RL02FCT2G
- onsemi
-
1:
0.842 CHF
-
24 583Auf Lager
|
Mouser-Teilenr.
863-NB3RL02FCT2G
|
onsemi
|
Taktsignalpuffer 2 CH CLOCK FANOUT BUFFER
|
|
24 583Auf Lager
|
|
|
0.842 CHF
|
|
|
0.605 CHF
|
|
|
0.547 CHF
|
|
|
0.482 CHF
|
|
|
0.389 CHF
|
|
|
Anzeigen
|
|
|
0.451 CHF
|
|
|
0.432 CHF
|
|
|
0.412 CHF
|
|
|
0.378 CHF
|
|
Min.: 1
Mult.: 1
:
3 000
|
|
|
2 Output
|
|
12 ns
|
|
WLCSP-8
|
|
80 MHz
|
2.3 V
|
5.5 V
|
NB3RL02
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer 3.3V 200MHZ 1:2 LVCMOS/LVTTL LOW SKEW FANOUT BUFFER
- NB3M8302CDG
- onsemi
-
1:
2.19 CHF
-
5 323Auf Lager
|
Mouser-Teilenr.
863-NB3M8302CDG
|
onsemi
|
Taktsignalpuffer 3.3V 200MHZ 1:2 LVCMOS/LVTTL LOW SKEW FANOUT BUFFER
|
|
5 323Auf Lager
|
|
|
2.19 CHF
|
|
|
1.65 CHF
|
|
|
1.36 CHF
|
|
|
1.35 CHF
|
|
|
Anzeigen
|
|
|
1.33 CHF
|
|
|
1.24 CHF
|
|
|
1.11 CHF
|
|
|
1.09 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
2 Output
|
|
3.3 ns
|
|
SOIC-8
|
|
200 MHz
|
3.135 V
|
3.465 V
|
NB3M8302C
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer 1:10 HCSL FAN-OUT BUFFER
- NB3N111KMNR4G
- onsemi
-
1:
7.21 CHF
-
1 034Auf Lager
-
NRND
|
Mouser-Teilenr.
863-NB3N111KMNR4G
NRND
|
onsemi
|
Taktsignalpuffer 1:10 HCSL FAN-OUT BUFFER
|
|
1 034Auf Lager
|
|
|
7.21 CHF
|
|
|
5.77 CHF
|
|
|
5.36 CHF
|
|
|
4.81 CHF
|
|
|
Anzeigen
|
|
|
4.21 CHF
|
|
|
4.59 CHF
|
|
|
4.40 CHF
|
|
|
4.21 CHF
|
|
Min.: 1
Mult.: 1
:
1 000
|
|
|
10 Output
|
|
1.1 ns
|
|
QFN-32
|
|
400 MHz
|
3 V
|
3.6 V
|
NB3N111K
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer 2.5V 1:5 Dual Diff LVDS Clock Driver
onsemi MC100EP210SFAG
- MC100EP210SFAG
- onsemi
-
1:
16.82 CHF
-
154Auf Lager
|
Mouser-Teilenr.
863-MC100EP210SFAG
|
onsemi
|
Taktsignalpuffer 2.5V 1:5 Dual Diff LVDS Clock Driver
|
|
154Auf Lager
|
|
|
16.82 CHF
|
|
|
14.05 CHF
|
|
|
13.45 CHF
|
|
|
12.53 CHF
|
|
|
Anzeigen
|
|
|
12.52 CHF
|
|
|
12.23 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
10 Output
|
|
0.65 ns
|
|
LQFP-32
|
|
1 GHz
|
2.375 V
|
2.625 V
|
MC100EP210S
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer TSMC1-4 MLL TO PECL
onsemi NB7L14MNG
- NB7L14MNG
- onsemi
-
1:
12.46 CHF
-
487Auf Lager
|
Mouser-Teilenr.
863-NB7L14MNG
|
onsemi
|
Taktsignalpuffer TSMC1-4 MLL TO PECL
|
|
487Auf Lager
|
|
Min.: 1
Mult.: 1
|
|
|
4 Output
|
|
150 ps
|
|
QFN-16
|
|
8 GHz
|
2.375 V
|
3.465 V
|
NB7L14
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer TSMC1-4 MLL TO PECL
onsemi NB7L14MNTXG
- NB7L14MNTXG
- onsemi
-
1:
14.47 CHF
-
1 866Auf Lager
|
Mouser-Teilenr.
863-NB7L14MNTXG
|
onsemi
|
Taktsignalpuffer TSMC1-4 MLL TO PECL
|
|
1 866Auf Lager
|
|
|
14.47 CHF
|
|
|
12.29 CHF
|
|
|
11.61 CHF
|
|
|
10.74 CHF
|
|
|
Anzeigen
|
|
|
9.50 CHF
|
|
|
10.32 CHF
|
|
|
9.98 CHF
|
|
|
9.57 CHF
|
|
|
9.50 CHF
|
|
Min.: 1
Mult.: 1
:
3 000
|
|
|
4 Output
|
|
150 ps
|
|
QFN-16
|
|
8 GHz
|
2.375 V
|
3.465 V
|
NB7L14
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer 3.3V/5V ECL 1:2 Diff Fanout Buffer
- MC100EP11DTG
- onsemi
-
1:
7.38 CHF
-
161Auf Lager
|
Mouser-Teilenr.
863-MC100EP11DTG
|
onsemi
|
Taktsignalpuffer 3.3V/5V ECL 1:2 Diff Fanout Buffer
|
|
161Auf Lager
|
|
|
7.38 CHF
|
|
|
6.10 CHF
|
|
|
5.79 CHF
|
|
|
5.29 CHF
|
|
|
Anzeigen
|
|
|
5.03 CHF
|
|
|
4.83 CHF
|
|
|
4.63 CHF
|
|
|
Kostenvoranschlag
|
|
Min.: 1
Mult.: 1
|
|
|
2 Output
|
|
270 ps
|
|
TSSOP-8
|
|
3 GHz
|
3 V
|
5.5 V
|
MC100EP11
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer 2.5V/3.3V ECL 1:3 Diff Fanout Buffer
- MC100LVEP11MNR4G
- onsemi
-
1:
8.08 CHF
-
909Auf Lager
|
Mouser-Teilenr.
863-MC100LVEP11MNR4G
|
onsemi
|
Taktsignalpuffer 2.5V/3.3V ECL 1:3 Diff Fanout Buffer
|
|
909Auf Lager
|
|
|
8.08 CHF
|
|
|
6.31 CHF
|
|
|
5.87 CHF
|
|
|
5.38 CHF
|
|
|
4.89 CHF
|
|
|
Anzeigen
|
|
|
5.14 CHF
|
|
|
5.00 CHF
|
|
|
4.83 CHF
|
|
|
Kostenvoranschlag
|
|
Min.: 1
Mult.: 1
:
1 000
|
|
|
2 Output
|
|
310 ps
|
|
DFN-8
|
|
3 GHz
|
2.375 V
|
3.8 V
|
MC100LVEP11
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer M-LVDS DRIVER RECEIVER
- NB3N200SDR2G
- onsemi
-
1:
2.62 CHF
-
1 972Auf Lager
-
NRND
|
Mouser-Teilenr.
863-NB3N200SDR2G
NRND
|
onsemi
|
Taktsignalpuffer M-LVDS DRIVER RECEIVER
|
|
1 972Auf Lager
|
|
|
2.62 CHF
|
|
|
2.00 CHF
|
|
|
1.89 CHF
|
|
|
1.72 CHF
|
|
|
1.29 CHF
|
|
|
Anzeigen
|
|
|
1.68 CHF
|
|
|
1.59 CHF
|
|
|
1.30 CHF
|
|
|
1.26 CHF
|
|
Min.: 1
Mult.: 1
:
2 500
|
|
|
1 Output
|
|
2.4 ns
|
|
SOIC-8
|
|
500 kHz
|
3 V
|
3.6 V
|
NB3N200S
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer 2.5V/3.3V 1:5 Dual ECL/PECL/HST Driver
onsemi MC100LVEP210FAG
- MC100LVEP210FAG
- onsemi
-
1:
15.91 CHF
-
118Auf Lager
-
NRND
|
Mouser-Teilenr.
863-MC100LVEP210FAG
NRND
|
onsemi
|
Taktsignalpuffer 2.5V/3.3V 1:5 Dual ECL/PECL/HST Driver
|
|
118Auf Lager
|
|
|
15.91 CHF
|
|
|
13.28 CHF
|
|
|
12.71 CHF
|
|
|
11.83 CHF
|
|
|
Anzeigen
|
|
|
11.64 CHF
|
|
|
11.55 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
10 Output
|
|
0.43 ns
|
|
LQFP-32
|
|
3 GHz
|
2.375 V
|
3.8 V
|
MC100LVEP210
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer 3.3V/5V ECL 1:2 Diff Fanout Buffer
- MC100EP11DR2G
- onsemi
-
1:
7.23 CHF
-
2 826Auf Lager
|
Mouser-Teilenr.
863-MC100EP11DR2G
|
onsemi
|
Taktsignalpuffer 3.3V/5V ECL 1:2 Diff Fanout Buffer
|
|
2 826Auf Lager
|
|
|
7.23 CHF
|
|
|
5.62 CHF
|
|
|
5.22 CHF
|
|
|
4.78 CHF
|
|
|
Anzeigen
|
|
|
4.31 CHF
|
|
|
4.56 CHF
|
|
|
4.44 CHF
|
|
|
4.33 CHF
|
|
|
4.31 CHF
|
|
|
Kostenvoranschlag
|
|
Min.: 1
Mult.: 1
:
2 500
|
|
|
2 Output
|
|
270 ps
|
|
SOIC-8
|
|
3 GHz
|
3 V
|
5.5 V
|
MC100EP11
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer 1:4 HCSL FANOUT BUFFER
- NB3L204KMNTXG
- onsemi
-
1:
4.31 CHF
-
6 643Auf Lager
|
Mouser-Teilenr.
863-NB3L204KMNTXG
|
onsemi
|
Taktsignalpuffer 1:4 HCSL FANOUT BUFFER
|
|
6 643Auf Lager
|
|
|
4.31 CHF
|
|
|
3.30 CHF
|
|
|
3.04 CHF
|
|
|
2.76 CHF
|
|
|
Anzeigen
|
|
|
2.42 CHF
|
|
|
2.64 CHF
|
|
|
2.55 CHF
|
|
|
2.49 CHF
|
|
|
2.42 CHF
|
|
Min.: 1
Mult.: 1
:
3 000
|
|
|
4 Output
|
|
1.4 ns
|
|
|
|
350 MHz
|
2.375 V
|
3.63 V
|
NB3L204K
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer HF LVDS FANOUT BUFF/ TRANS
- NB6L11SMNR2G
- onsemi
-
1:
9.05 CHF
-
3 128Auf Lager
|
Mouser-Teilenr.
863-NB6L11SMNR2G
|
onsemi
|
Taktsignalpuffer HF LVDS FANOUT BUFF/ TRANS
|
|
3 128Auf Lager
|
|
|
9.05 CHF
|
|
|
7.09 CHF
|
|
|
6.59 CHF
|
|
|
6.06 CHF
|
|
|
Anzeigen
|
|
|
5.24 CHF
|
|
|
5.80 CHF
|
|
|
5.64 CHF
|
|
|
5.52 CHF
|
|
|
5.24 CHF
|
|
Min.: 1
Mult.: 1
:
3 000
|
|
|
2 Output
|
|
450 ps
|
|
QFN-16
|
|
2 GHz
|
2.375 V
|
2.625 V
|
NB6L11S
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer HF LVDS FANOUT BUFF/ TRANS
- NB6N14SMNR2G
- onsemi
-
1:
11.49 CHF
-
1 819Auf Lager
-
3 000erwartet ab 20.04.2026
|
Mouser-Teilenr.
863-NB6N14SMNR2G
|
onsemi
|
Taktsignalpuffer HF LVDS FANOUT BUFF/ TRANS
|
|
1 819Auf Lager
3 000erwartet ab 20.04.2026
|
|
|
11.49 CHF
|
|
|
9.07 CHF
|
|
|
8.48 CHF
|
|
|
7.80 CHF
|
|
|
Anzeigen
|
|
|
6.88 CHF
|
|
|
7.49 CHF
|
|
|
7.30 CHF
|
|
|
6.91 CHF
|
|
|
6.88 CHF
|
|
|
Kostenvoranschlag
|
|
Min.: 1
Mult.: 1
:
3 000
|
|
|
4 Output
|
|
600 ps
|
|
QFN-16
|
|
2 GHz
|
3 V
|
3.6 V
|
NB6N14S
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer NSEB THAI TRANS
onsemi NB6N11SMNR2G
- NB6N11SMNR2G
- onsemi
-
1:
8.56 CHF
-
3 658Auf Lager
|
Mouser-Teilenr.
863-NB6N11SMNR2G
|
onsemi
|
Taktsignalpuffer NSEB THAI TRANS
|
|
3 658Auf Lager
|
|
|
8.56 CHF
|
|
|
7.09 CHF
|
|
|
6.60 CHF
|
|
|
6.06 CHF
|
|
|
5.76 CHF
|
|
|
5.76 CHF
|
|
Min.: 1
Mult.: 1
Max.: 340
:
3 000
|
|
|
2 Output
|
|
470 ps
|
|
QFN-16
|
|
2 GHz
|
3 V
|
3.6 V
|
NB6N11S
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer 2.5V / 3.3V 1:8 PECL FANO
onsemi NB7L1008MNTXG
- NB7L1008MNTXG
- onsemi
-
1:
5.72 CHF
-
5 806Auf Lager
|
Mouser-Teilenr.
863-NB7L1008MNTXG
|
onsemi
|
Taktsignalpuffer 2.5V / 3.3V 1:8 PECL FANO
|
|
5 806Auf Lager
|
|
|
5.72 CHF
|
|
|
4.41 CHF
|
|
|
4.08 CHF
|
|
|
3.73 CHF
|
|
|
3.35 CHF
|
|
|
Anzeigen
|
|
|
3.56 CHF
|
|
|
3.45 CHF
|
|
|
3.27 CHF
|
|
|
Kostenvoranschlag
|
|
Min.: 1
Mult.: 1
:
1 000
|
|
|
8 Output
|
|
220 ps
|
|
|
|
7 GHz
|
2.375 V
|
3.6 V
|
NB7L1008
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer 3.3V/5V ECL 1:2 Diff Fanout Buffer
- MC100EP11DTR2G
- onsemi
-
1:
5.07 CHF
-
2 772Auf Lager
|
Mouser-Teilenr.
863-MC100EP11DTR2G
|
onsemi
|
Taktsignalpuffer 3.3V/5V ECL 1:2 Diff Fanout Buffer
|
|
2 772Auf Lager
|
|
|
5.07 CHF
|
|
|
3.90 CHF
|
|
|
3.60 CHF
|
|
|
3.28 CHF
|
|
|
Anzeigen
|
|
|
2.77 CHF
|
|
|
3.13 CHF
|
|
|
3.03 CHF
|
|
|
2.96 CHF
|
|
|
2.77 CHF
|
|
Min.: 1
Mult.: 1
:
2 500
|
|
|
2 Output
|
|
270 ps
|
|
TSSOP-8
|
|
3 GHz
|
3 V
|
5.5 V
|
MC100EP11
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer 3.3V/5V ECL Coaxial Cable Driver
- MC10EP89DG
- onsemi
-
1:
8.26 CHF
-
1 082Auf Lager
|
Mouser-Teilenr.
863-MC10EP89DG
|
onsemi
|
Taktsignalpuffer 3.3V/5V ECL Coaxial Cable Driver
|
|
1 082Auf Lager
|
|
Min.: 1
Mult.: 1
|
|
|
2 Output
|
|
370 ps
|
|
SOIC-8
|
|
2 GHz
|
3 V
|
5 V
|
MC10EP89
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer 2.5V, 3.3V Differential 1:2 HCSL Fanout Buffer
- NB3L202KMNG
- onsemi
-
1:
4.30 CHF
-
980Auf Lager
|
Mouser-Teilenr.
863-NB3L202KMNG
|
onsemi
|
Taktsignalpuffer 2.5V, 3.3V Differential 1:2 HCSL Fanout Buffer
|
|
980Auf Lager
|
|
|
4.30 CHF
|
|
|
3.29 CHF
|
|
|
3.04 CHF
|
|
|
2.71 CHF
|
|
|
Anzeigen
|
|
|
2.57 CHF
|
|
|
2.52 CHF
|
|
|
2.46 CHF
|
|
|
2.36 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
2 Output
|
|
1.4 ns
|
HCSL
|
QFN-16
|
HCSL, LVDS, LVPECL
|
350 MHz
|
2.375 V
|
3.63 V
|
NB3L202K
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer 2.5V, 3.3V Differential 1:2 HCSL Fanout Buffer
- NB3L202KMNTXG
- onsemi
-
1:
3.61 CHF
-
1 132Auf Lager
|
Mouser-Teilenr.
863-NB3L202KMNTXG
|
onsemi
|
Taktsignalpuffer 2.5V, 3.3V Differential 1:2 HCSL Fanout Buffer
|
|
1 132Auf Lager
|
|
|
3.61 CHF
|
|
|
2.74 CHF
|
|
|
2.52 CHF
|
|
|
2.29 CHF
|
|
|
Anzeigen
|
|
|
1.96 CHF
|
|
|
2.17 CHF
|
|
|
2.11 CHF
|
|
|
2.05 CHF
|
|
|
1.96 CHF
|
|
|
Kostenvoranschlag
|
|
Min.: 1
Mult.: 1
:
3 000
|
|
|
2 Output
|
350 MHz
|
1.4 ns
|
HCSL
|
QFN-16
|
HCSL, LVDS, LVPECL
|
350 MHz
|
2.375 V
|
3.63 V
|
NB3L202K
|
- 40 C
|
+ 85 C
|
|
|
|
Taktsignalpuffer 3.3V 200MHZ 1:2 LVCMOS/LVTTL LOW SKEW FANOUT BUFFER
- NB3M8302CDR2G
- onsemi
-
1:
1.94 CHF
-
1 177Auf Lager
|
Mouser-Teilenr.
863-NB3M8302CDR2G
|
onsemi
|
Taktsignalpuffer 3.3V 200MHZ 1:2 LVCMOS/LVTTL LOW SKEW FANOUT BUFFER
|
|
1 177Auf Lager
|
|
|
1.94 CHF
|
|
|
1.44 CHF
|
|
|
1.32 CHF
|
|
|
1.19 CHF
|
|
|
1.01 CHF
|
|
|
Anzeigen
|
|
|
1.12 CHF
|
|
|
1.07 CHF
|
|
|
1.05 CHF
|
|
|
0.98 CHF
|
|
Min.: 1
Mult.: 1
:
2 500
|
|
|
2 Output
|
|
3.3 ns
|
|
SOIC-8
|
|
200 MHz
|
3.135 V
|
3.465 V
|
NB3M8302C
|
- 40 C
|
+ 85 C
|
|
Schweiz