.hide-partial { max-height: none; } .show-more { display: none; }

Si511 Series Standard Clock Oscillators

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 1.718

Applied Filters:

Series = Si511

Product Type

Package/Case

Frequency

Frequency Stability

Load Capacitance

Supply Voltage - Min

Supply Voltage - Max

Output Format

Termination Style

Minimum Operating Temperature

Maximum Operating Temperature

Length

Width

Height

Packaging

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511BBA156M250AAGR
Skyworks Solutions, Inc.
1: Rp118.699
1.013In Stock

Mfr. Part No.
511BBA156M250AAGR

Mouser Part No
634-11BBA156M250AAGR

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

1.013In Stock

Cut Tape

Rp118.699

Rp102.554

Rp97.417

Rp92.831

Reel

Rp75.402

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1.000

Standard Oscillators

7 mm x 5 mm

156.25 MHz

25 PPM

15 pF

2.97 V

3.63 V

LVDS

SMD/SMT

- 40 C

+ 85 C

7 mm (0.276 in)

5 mm (0.197 in)

1.8 mm (0.071 in)

Si511

Reel, Cut Tape, MouseReel

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511FAA156M250BAG
Skyworks Solutions, Inc.
1: Rp132.825
164In Stock

Mfr. Part No.
511FAA156M250BAG

Mouser Part No
634-511FAA156M250BAG

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

164In Stock

Rp132.825

Rp114.663

Rp108.975

Rp103.838

View

Min.: 1
Mult.: 1

Standard Oscillators

5 mm x 3.2 mm

156.25 MHz

50 PPM

15 pF

2.25 V

2.75 V

LVDS

SMD/SMT

- 40 C

+ 85 C

5 mm (0.197 in)

3.2 mm (0.126 in)

1.28 mm (0.05 in)

Si511

Cut Tape

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511BBA125M000AAGR
Skyworks Solutions, Inc.
1: Rp114.846
620In Stock

Mfr. Part No.
511BBA125M000AAGR

Mouser Part No
634-11BBA125M000AAGR

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

620In Stock

Cut Tape

Rp114.846

Rp99.068

Rp94.115

Rp89.712

Reel

Rp70.632

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1.000

Standard Oscillators

7 mm x 5 mm

125 MHz

25 PPM

15 pF

2.97 V

3.63 V

LVDS

SMD/SMT

- 40 C

+ 85 C

7 mm (0.276 in)

5 mm (0.197 in)

1.8 mm (0.071 in)

Si511

Reel, Cut Tape, MouseReel

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511ABA25M0000BAG
Skyworks Solutions, Inc.
1: Rp118.882
85In Stock

Mfr. Part No.
511ABA25M0000BAG

Mouser Part No
634-511ABA25M0000BAG

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

85In Stock

Rp118.882

Rp103.288

Rp97.601

Rp93.565

View

Min.: 1
Mult.: 1

Standard Oscillators

5 mm x 3.2 mm

25 MHz

25 PPM

15 pF

2.97 V

3.63 V

LVPECL

SMD/SMT

- 40 C

+ 85 C

5 mm (0.197 in)

3.2 mm (0.126 in)

1.28 mm (0.05 in)

Si511

Cut Tape

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511BBA150M000BAG
Skyworks Solutions, Inc.
1: Rp131.357
196In Stock

Mfr. Part No.
511BBA150M000BAG

Mouser Part No
634-511BBA150M000BAG

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

196In Stock

Rp131.357

Rp114.112

Rp107.874

Rp103.471

View

Min.: 1
Mult.: 1

Standard Oscillators

5 mm x 3.2 mm

150 MHz

25 PPM

15 pF

2.97 V

3.63 V

LVDS

SMD/SMT

- 40 C

+ 85 C

5 mm (0.197 in)

3.2 mm (0.126 in)

1.28 mm (0.05 in)

Si511

Cut Tape

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511JCA160M000BAG
Skyworks Solutions, Inc.
1: Rp146.034
208In Stock

Mfr. Part No.
511JCA160M000BAG

Mouser Part No
634-511JCA160M000BAG

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

208In Stock

Rp146.034

Rp126.220

Rp119.799

Rp114.112

View

Min.: 1
Mult.: 1

Standard Oscillators

5 mm x 3.2 mm

160 MHz

20 PPM

15 pF

1.71 V

1.89 V

LVDS

SMD/SMT

- 40 C

+ 85 C

5 mm (0.197 in)

3.2 mm (0.126 in)

1.28 mm (0.05 in)

Si511

Cut Tape

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511SAA100M000AAG
Skyworks Solutions, Inc.
1: Rp124.202
200In Stock

Mfr. Part No.
511SAA100M000AAG

Mouser Part No
634-511SAA100M000AAG

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

200In Stock

Rp124.202

Rp108.058

Rp102.187

Rp97.968

View

Min.: 1
Mult.: 1

Standard Oscillators

7 mm x 5 mm

100 MHz

50 PPM

15 pF

1.71 V

1.89 V

CMOS

SMD/SMT

- 40 C

+ 85 C

7 mm (0.276 in)

5 mm (0.197 in)

1.8 mm (0.071 in)

Si511

Cut Tape

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511DCA125M000AAG
Skyworks Solutions, Inc.
1: Rp140.163
169In Stock

Mfr. Part No.
511DCA125M000AAG

Mouser Part No
634-511DCA125M000AAG

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

169In Stock

Rp140.163

Rp120.900

Rp115.029

Rp109.526

View

Min.: 1
Mult.: 1

Standard Oscillators

7 mm x 5 mm

125 MHz

20 PPM

15 pF

2.97 V

3.63 V

HCSL

SMD/SMT

- 40 C

+ 85 C

7 mm (0.276 in)

5 mm (0.197 in)

1.8 mm (0.071 in)

Si511

Cut Tape

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511BBA50M0000BAG
Skyworks Solutions, Inc.
1: Rp124.569
185In Stock

Mfr. Part No.
511BBA50M0000BAG

Mouser Part No
634-511BBA50M0000BAG

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

185In Stock

Rp124.569

Rp107.508

Rp102.187

Rp97.234

View

Min.: 1
Mult.: 1

Standard Oscillators

5 mm x 3.2 mm

50 MHz

25 PPM

15 pF

2.97 V

3.63 V

LVDS

SMD/SMT

- 40 C

+ 85 C

5 mm (0.197 in)

3.2 mm (0.126 in)

1.28 mm (0.05 in)

Si511

Cut Tape

Standard Clock Oscillators Si511 Crystal Oscillator (XO)

511DBA100M000BAG
Skyworks Solutions, Inc.
1: Rp118.882
232In Stock

Mfr. Part No.
511DBA100M000BAG

Mouser Part No
634-511DBA100M000BAG

Skyworks Solutions, Inc.

Standard Clock Oscillators Si511 Crystal Oscillator (XO)

Datasheet

232In Stock

Rp118.882

Rp103.288

Rp97.601

Rp93.565

View

Min.: 1
Mult.: 1

Standard Oscillators

5 mm x 3.2 mm

100 MHz

25 PPM

15 pF

2.97 V

3.63 V

HCSL

SMD/SMT

- 40 C

+ 85 C

5 mm (0.197 in)

3.2 mm (0.126 in)

1.28 mm (0.05 in)

Si511

Cut Tape

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511JBA200M000AAG
Skyworks Solutions, Inc.
1: Rp159.427
209In Stock

Mfr. Part No.
511JBA200M000AAG

Mouser Part No
634-511JBA200M000AAG

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

209In Stock

Rp159.427

Rp137.595

Rp130.807

Rp124.569

View

Min.: 1
Mult.: 1

Standard Oscillators

7 mm x 5 mm

200 MHz

25 PPM

15 pF

1.71 V

1.89 V

LVDS

SMD/SMT

- 40 C

+ 85 C

7 mm (0.276 in)

5 mm (0.197 in)

1.8 mm (0.071 in)

Si511

Cut Tape

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511BCA200M000BAG
Skyworks Solutions, Inc.
1: Rp161.628
180In Stock

Mfr. Part No.
511BCA200M000BAG

Mouser Part No
634-511BCA200M000BAG

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

180In Stock

Rp161.628

Rp139.613

Rp132.642

Rp126.404

View

Min.: 1
Mult.: 1

Standard Oscillators

5 mm x 3.2 mm

200 MHz

20 PPM

15 pF

2.97 V

3.63 V

LVDS

SMD/SMT

- 40 C

+ 85 C

5 mm (0.197 in)

3.2 mm (0.126 in)

1.28 mm (0.05 in)

Si511

Cut Tape

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511BBA153M600AAG
Skyworks Solutions, Inc.
1: Rp141.998
172In Stock

Mfr. Part No.
511BBA153M600AAG

Mouser Part No
634-511BBA153M600AAG

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

172In Stock

Rp141.998

Rp122.551

Rp116.497

Rp110.993

View

Min.: 1
Mult.: 1

Standard Oscillators

7 mm x 5 mm

153.6 MHz

25 PPM

15 pF

2.97 V

3.63 V

LVDS

SMD/SMT

- 40 C

+ 85 C

7 mm (0.276 in)

5 mm (0.197 in)

1.8 mm (0.071 in)

Si511

Cut Tape

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511BBA156M250BAGR
Skyworks Solutions, Inc.
1: Rp110.626
5.490In Stock

Mfr. Part No.
511BBA156M250BAGR

Mouser Part No
634-11BBA156M250BAGR

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

5.490In Stock

Cut Tape

Rp110.626

Rp96.317

Rp90.996

Rp87.327

View

Reel

Rp72.650

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1.000

Standard Oscillators

5 mm x 3.2 mm

156.25 MHz

25 PPM

15 pF

2.97 V

3.63 V

LVDS

SMD/SMT

- 40 C

+ 85 C

5 mm (0.197 in)

3.2 mm (0.126 in)

1.28 mm (0.05 in)

Si511

Reel, Cut Tape, MouseReel

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511FCA125M000BAGR
Skyworks Solutions, Inc.
1: Rp132.825
970In Stock

Mfr. Part No.
511FCA125M000BAGR

Mouser Part No
634-511FCA125000BAGR

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

970In Stock

Cut Tape

Rp132.825

Rp114.663

Rp108.975

Rp103.838

View

Reel

Rp82.557

Min.: 1
Mult.: 1

Reel: 1.000

Standard Oscillators

5 mm x 3.2 mm

125 MHz

30 PPM

15 pF

2.25 V

2.75 V

LVDS

SMD/SMT

- 40 C

+ 85 C

5 mm (0.197 in)

3.2 mm (0.126 in)

1.17 mm (0.046 in)

Si511

Reel, Cut Tape

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511ABA156M250AAGR
Skyworks Solutions, Inc.
1: Rp113.929
2.577In Stock

Mfr. Part No.
511ABA156M250AAGR

Mouser Part No
634-11ABA156M250AAGR

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

2.577In Stock

Cut Tape

Rp113.929

Rp99.068

Rp93.748

Rp89.895

View

Reel

Rp69.898

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1.000

Standard Oscillators

7 mm x 5 mm

156.25 MHz

25 PPM

15 pF

2.97 V

3.63 V

LVPECL

SMD/SMT

- 40 C

+ 85 C

7 mm (0.276 in)

5 mm (0.197 in)

1.8 mm (0.071 in)

Si511

Reel, Cut Tape, MouseReel

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511BBA125M000BAGR
Skyworks Solutions, Inc.
1: Rp99.802
462In Stock

Mfr. Part No.
511BBA125M000BAGR

Mouser Part No
634-11BBA125M000BAGR

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

462In Stock

Cut Tape

Rp99.802

Rp86.960

Rp82.190

Rp78.704

Reel

Rp65.495

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1.000

Standard Oscillators

5 mm x 3.2 mm

125 MHz

25 PPM

15 pF

2.97 V

3.63 V

LVDS

SMD/SMT

- 40 C

+ 85 C

5 mm (0.197 in)

3.2 mm (0.126 in)

1.28 mm (0.05 in)

Si511

Reel, Cut Tape, MouseReel

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511BBA200M000BAGR
Skyworks Solutions, Inc.
1: Rp122.368
2.773In Stock

Mfr. Part No.
511BBA200M000BAGR

Mouser Part No
634-11BBA200M000BAGR

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

2.773In Stock

Cut Tape

Rp122.368

Rp106.407

Rp100.720

Rp96.500

Reel

Rp82.924

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1.000

Standard Oscillators

5 mm x 3.2 mm

200 MHz

25 PPM

15 pF

2.97 V

3.63 V

LVDS

SMD/SMT

- 40 C

+ 85 C

5 mm (0.197 in)

3.2 mm (0.126 in)

1.28 mm (0.05 in)

Si511

Reel, Cut Tape, MouseReel

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511FBA125M000BAGR
Skyworks Solutions, Inc.
1: Rp99.802
825In Stock

Mfr. Part No.
511FBA125M000BAGR

Mouser Part No
634-11FBA125M000BAGR

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

825In Stock

Cut Tape

Rp99.802

Rp86.960

Rp82.190

Rp78.704

Reel

Rp65.495

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1.000

Standard Oscillators

5 mm x 3.2 mm

125 MHz

25 PPM

15 pF

2.25 V

2.75 V

LVDS

SMD/SMT

- 40 C

+ 85 C

5 mm (0.197 in)

3.2 mm (0.126 in)

1.28 mm (0.05 in)

Si511

Reel, Cut Tape, MouseReel

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511ABA25M0000BAGR
Skyworks Solutions, Inc.
1: Rp124.569
1.210In Stock

Mfr. Part No.
511ABA25M0000BAGR

Mouser Part No
634-511ABA25000BAGR

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

1.210In Stock

Cut Tape

Rp124.569

Rp107.508

Rp102.187

Rp97.234

Reel

Rp81.089

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1.000

Standard Oscillators

5 mm x 3.2 mm

25 MHz

50 PPM

15 pF

2.97 V

3.63 V

LVPECL

SMD/SMT

- 40 C

+ 85 C

5 mm (0.197 in)

3.2 mm (0.126 in)

1.17 mm (0.046 in)

Si511

Reel, Cut Tape, MouseReel

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511BBA100M000AAG
Skyworks Solutions, Inc.
1: Rp108.792
1.843In Stock

Mfr. Part No.
511BBA100M000AAG

Mouser Part No
634-511BBA100M000AAG

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

1.843In Stock

Rp108.792

Rp94.665

Rp89.528

Rp85.859

View

Min.: 1
Mult.: 1

Standard Oscillators

7 mm x 5 mm

100 MHz

25 PPM

15 pF

2.97 V

3.63 V

LVDS

SMD/SMT

- 40 C

+ 85 C

7 mm (0.276 in)

5 mm (0.197 in)

1.8 mm (0.071 in)

Si511

Cut Tape

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511BBA100M000BAG
Skyworks Solutions, Inc.
1: Rp99.802
1.181In Stock

Mfr. Part No.
511BBA100M000BAG

Mouser Part No
634-511BBA100M000BAG

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

1.181In Stock

Rp99.802

Rp86.960

Rp82.190

Rp78.704

View

Min.: 1
Mult.: 1

Standard Oscillators

5 mm x 3.2 mm

100 MHz

25 PPM

15 pF

2.97 V

3.63 V

LVDS

SMD/SMT

- 40 C

+ 85 C

5 mm (0.197 in)

3.2 mm (0.126 in)

1.28 mm (0.05 in)

Si511

Cut Tape

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511BBA125M000BAG
Skyworks Solutions, Inc.
1: Rp99.802
2.267In Stock

Mfr. Part No.
511BBA125M000BAG

Mouser Part No
634-511BBA125M000BAG

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

2.267In Stock

Rp99.802

Rp86.960

Rp82.190

Rp78.704

View

Min.: 1
Mult.: 1

Standard Oscillators

5 mm x 3.2 mm

125 MHz

25 PPM

15 pF

2.97 V

3.63 V

LVDS

SMD/SMT

- 40 C

+ 85 C

5 mm (0.197 in)

3.2 mm (0.126 in)

1.28 mm (0.05 in)

Si511

Cut Tape

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511BBA148M500BAG
Skyworks Solutions, Inc.
1: Rp110.626
364In Stock

Mfr. Part No.
511BBA148M500BAG

Mouser Part No
634-511BBA148M500BAG

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

364In Stock

Rp110.626

Rp96.317

Rp90.996

Rp87.327

View

Min.: 1
Mult.: 1

Standard Oscillators

5 mm x 3.2 mm

148.5 MHz

25 PPM

15 pF

2.97 V

3.63 V

LVDS

SMD/SMT

- 40 C

+ 85 C

5 mm (0.197 in)

3.2 mm (0.126 in)

1.28 mm (0.05 in)

Si511

Cut Tape

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

511BBA200M000BAG
Skyworks Solutions, Inc.
1: Rp122.368
1.198In Stock

Mfr. Part No.
511BBA200M000BAG

Mouser Part No
634-511BBA200M000BAG

Skyworks Solutions, Inc.

Standard Clock Oscillators Differential/single-ended; single frequency XO; OE pin 1; 0.1-250 MHz

Datasheet

1.198In Stock

Rp122.368

Rp106.407

Rp100.720

Rp96.500

View

Min.: 1
Mult.: 1

Standard Oscillators

5 mm x 3.2 mm

200 MHz

25 PPM

15 pF

2.97 V

3.63 V

LVDS

SMD/SMT

- 40 C

+ 85 C

5 mm (0.197 in)

3.2 mm (0.126 in)

1.28 mm (0.05 in)

Si511

Cut Tape

Si511 Series Standard Clock Oscillators

Customer Service Office

Company

Resources

Support

100 kHz
110 kHz
127 kHz
185 kHz
244 kHz
292 kHz
300 kHz
351 kHz
378.5454 kHz
391 kHz
500 kHz
505 kHz
587 kHz
682 kHz
700 kHz
1 MHz
1.12896 MHz
4 MHz
5 MHz
6.78 MHz