Clock Buffers

Clock buffers are semiconductor devices that fan out clock signals and isolates the source from the load. Clock buffers are known to have multiple controllable outputs as well as separate power supplies for outputs or for input/output allowing it to work as a level shifter.

What are clock buffers?

Clock buffers are devices clock buffers create multiple copies of input clocks for individual distribution across a PCB. They are comprised of single-ended output buffers and differential outputs. Single-ended output clock buffers are LVCMOS (Low voltage complementary metal-oxide-semiconductor) while differential output buffers may be LVPECL (Low Voltage Positive Emitter Coupled Logic), HSTL (High-speed transceiver logic) or LVDS (Low Voltage Differential Signaling).

Clock buffers don't alter the frequency properties of the input signal, which in turn minimalises the additive noise which is added to the input whilst in the buffering stage.

Types of clock buffers

Clock buffers are offered in an array of variations such as variations on the maximum operating input frequency that can range from 30 Mhz to 8 Ghz, variety on the maximum supply current it can support and the number of pins installed in the IC.

Some clock buffers feature ultra-low jitter and low skew clock distribution.

Applications of clock buffers

Clock buffers are widely used in applications such as;

  • High-speed instrumentation and line receivers
  • Converter clocking
  • Automated test equipment (ATE)
  • Wireless and wired communications
  • Medical and industrial imaging

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Description Price Number of Elements per Chip Maximum Supply Current Maximum Input Frequency Mounting Type Package Type Pin Count Dimensions Length Width Height Maximum Operating Supply Voltage Maximum Operating Temperature Maximum Output Frequency Minimum Operating Supply Voltage
RS Stock No. 177-9647
Mfr. Part No.PL133-37TC
BrandMicrochip
MYR2.16
Each (In a Bag of 20)
units
3 1.2 mA 150MHz Surface Mount SOT-23 6 3 x 1.7 x 1.2mm 3mm 1.7mm 1.2mm 4.6 V +70 °C - -0.5 V
RS Stock No. 194-9017
Mfr. Part No.CY2308SXI-2
MYR30.161
Each (In a Tube of 48)
units
1 45 mA 133.3MHz Surface Mount SOIC 16 9.98 x 3.98 x 1.47mm 9.98mm 3.98mm 1.47mm 3.6 V +85 °C 100MHz 3 V
RS Stock No. 194-8998
Mfr. Part No.CY2302SXI-1
MYR29.225
Each (In a Pack of 2)
units
1 50 mA 133MHz Surface Mount SOIC 8 4.97 x 3.98 x 1.47mm 4.97mm 3.98mm 1.47mm 5 V +85 °C 133MHz -
RS Stock No. 194-8985
Mfr. Part No.CY22392FXC
MYR51.773
Each (In a Tube of 96)
units
3 100 (Typ.) mA 166MHz Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 5.1mm 4.5mm 0.95mm 3.46 V +70 °C 166MHz 3.13 V
RS Stock No. 865-2416
Mfr. Part No.SI53115-A01AGM
MYR18.89
Each (In a Pack of 3)
units
- - - - - - - - - - - - - -
RS Stock No. 194-9015
Mfr. Part No.CY2308SXI-1H
MYR29.19
Each (In a Tube of 48)
units
1 70 mA 133.3MHz Surface Mount SOIC 16 9.98 x 3.98 x 1.47mm 9.98mm 3.98mm 1.47mm 3.6 V +85 °C 133.3MHz 3 V
RS Stock No. 194-9038
Mfr. Part No.CY23EP05SXC-1H
MYR57.59
Each
units
1 30 mA, 45 mA 220MHz Surface Mount SOIC 8 4.97 x 3.98 x 1.47mm 4.97mm 3.98mm 1.47mm 3.6 V +70 °C 220MHz 3 V
RS Stock No. 194-9022
Mfr. Part No.CY2309NZSXC-1H
MYR57.54
Each
units
1 32 mA 133MHz Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 5.1mm 4.5mm 0.95mm 3.6 V +70 °C 133.3MHz 3 V
RS Stock No. 787-6841
Mfr. Part No.MC10EP11DG
MYR36.42
Each
units
4 -40 mA 3GHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm +5.5 V +85 °C - -3 V
RS Stock No. 194-9003
Mfr. Part No.CY2304SXI-1
MYR45.08
Each (In a Tube of 97)
units
1 45 mA 133MHz Surface Mount SOIC 8 4.97 x 3.98 x 1.47mm 4.97mm 3.98mm 1.47mm 3.6 V +85 °C 133.3MHz 3 V
New
RS Stock No. 216-6243
Mfr. Part No.9DB403DGLFT
MYR15.46
Each (In a Pack of 5)
units
- 115 mA 400MHz - TSSOP-28 28 - - - - - - - -
RS Stock No. 194-8981
Mfr. Part No.CY22150FZXI
MYR41.64
Each (In a Tube of 96)
units
1 45 (Typ.) mA 133MHz Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 5.1mm 4.5mm 0.95mm 3.46 V +85 °C 166.6MHz 3.13 V
RS Stock No. 194-8982
Mfr. Part No.CY22150FZXI
MYR48.30
Each
units
1 45 (Typ.) mA 133MHz Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 5.1mm 4.5mm 0.95mm 3.46 V +85 °C 166.6MHz 3.13 V
RS Stock No. 188-5306
Mfr. Part No.CY22150KFZXC
MYR32.526
Each (In a Tube of 96)
units
6 45 mA 133 (Clock)MHz Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 5.1mm 4.5mm 0.95mm 3.46 V +70 °C 200MHz 3.13 V
New
RS Stock No. 216-6265
Mfr. Part No.9DBL411BKILF
MYR13.982
Each (In a Pack of 5)
units
- 20 mA 150MHz - TSSOP 20 - - - - - - - -
RS Stock No. 194-9039
Mfr. Part No.CY23EP05SXI-1H
MYR56.683
Each (In a Tube of 97)
units
1 30 mA, 45 mA 220MHz Surface Mount SOIC 8 4.97 x 3.98 x 1.47mm 4.97mm 3.98mm 1.47mm 3.6 V +85 °C 220MHz 3 V
RS Stock No. 194-9013
Mfr. Part No.CY2308SXI-1
MYR29.947
Each (In a Tube of 48)
units
1 45 mA 133.3MHz Surface Mount SOIC 16 9.98 x 3.98 x 1.47mm 9.98mm 3.98mm 1.47mm 3.6 V +85 °C 100MHz 3 V
RS Stock No. 194-9004
Mfr. Part No.CY2304SXI-1
MYR53.08
Each
units
1 45 mA 133MHz Surface Mount SOIC 8 4.97 x 3.98 x 1.47mm 4.97mm 3.98mm 1.47mm 3.6 V +85 °C 133.3MHz 3 V
RS Stock No. 802-2067
Mfr. Part No.NB7L572MNG
MYR55.83
Each
units
2 110 mA 8GHz Surface Mount QFN 32 5 x 5 x 0.95mm 5mm 5mm 0.95mm 3.6 V +85 °C - 2.375 V
RS Stock No. 177-9646
Mfr. Part No.PL123-02NGI
BrandMicrochip
MYR8.379
Each (In a Bag of 20)
units
3 0.8 mA 200MHz Surface Mount DFN 6 1.35 x 2.05 x 0.55mm 1.35mm 2.05mm 0.55mm 4.6 V +85 °C - -0.5 V