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. 162-8983
Mfr. Part No.NB7L1008MMNG
MYR37.87
Each (In a Tube of 74)
units
8 315 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. 194-8983
Mfr. Part No.CY22381FXC
MYR51.773
Each (In a Tube of 97)
units
3 70 (Typ.) mA 166MHz Surface Mount SOIC 8 4.97 x 3.98 x 1.47mm 4.97mm 3.98mm 1.47mm 3.46 V +70 °C 200MHz 3.13 V
RS Stock No. 121-6390
Mfr. Part No.MC10EP11DG
MYR25.19
Each (In a Tube of 98)
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. 194-9038
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. 194-8986
Mfr. Part No.CY22392FXC
MYR58.76
Each
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. 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. 194-8982
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. 188-5305
Mfr. Part No.CY22150FZXC
MYR30.296
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
RS Stock No. 194-9034
Mfr. Part No.CY2309ZXI-1H
MYR52.87
Each
units
1 35 mA 133MHz Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 5.1mm 4.5mm 0.95mm 3.6 V +85 °C 133.3MHz 3 V
RS Stock No. 194-9017
Mfr. Part No.CY2308SXI-2
MYR30.161
Each (In a Tube of 48)
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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. 194-9000
Mfr. Part No.CY2304NZZXI-1
MYR48.20
Each
units
1 25 mA 140MHz Surface Mount TSSOP 8 3.1 x 4.5 x 0.95mm 3.1mm 4.5mm 0.95mm 3.6 V +85 °C 66.66MHz 3 V
RS Stock No. 759-0254
Mfr. Part No.ADF4158CCPZ
MYR44.95
Each
units
3 23 mA 6.1GHz Surface Mount LFCSP VQ 24 4.1 x 4.1 x 0.8mm 4.1mm 4.1mm 0.8mm 3.3 V +125 °C - 2.7 V
RS Stock No. 194-8996
Mfr. Part No.CY2292FXI
MYR64.78
Each
units
3 110 (Typ.) mA 30MHz Surface Mount SOIC 16 9.98 x 3.98 x 1.47mm 9.98mm 3.98mm 1.47mm 5.5 V +85 °C 80MHz 4.5 V
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. 787-6936
Mfr. Part No.NB3N551MNR4G
MYR7.24
Each (In a Pack of 5)
units
4 40 mA 180MHz Surface Mount DFN 8 2 x 2 x 0.95mm 2mm 2mm 0.95mm 5.5 V +85 °C 180MHz 3 V
RS Stock No. 194-9035
Mfr. Part No.CY23EP05SXC-1
MYR46.767
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 +70 °C 220MHz 3 V
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. 126-4892
Mfr. Part No.Si53342-B-GM
MYR8.38
Each (In a Pack of 5)
units
6 80 mA 200MHz Surface Mount QFN 24 4 x 4 x 0.85mm 4mm 4mm 0.85mm 3.63 V +85 °C 1250MHz 2.97 V
RS Stock No. 194-9025
Mfr. Part No.CY2309SXC-1
MYR26.112
Each (In a Tube of 48)
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. 194-9026
Mfr. Part No.CY2309SXC-1
MYR30.415
Each (In a Pack of 2)
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