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. 121-6394
Mfr. Part No.NB3N2304NZDTG
Brandonsemi
€1.372
Each (In a Tube of 100)
units
4 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 140MHz 3 V
RS Stock No. 787-6927
Mfr. Part No.NB3N2304NZDTG
Brandonsemi
€1.865
Each (In a Pack of 2)
units
4 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 140MHz 3 V
RS Stock No. 145-6448
Mfr. Part No.CDCLVC1102PW
€1.909
Each (In a Tube of 150)
units
6 10 mA 180 MHz, 250 MHz Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 4.5mm 3.1mm 1.05mm 2.7 V, 3.6 V +85 °C 180 MHz, 250 MHz 2.3 V, 3 V
RS Stock No. 817-5947
Mfr. Part No.CDCLVC1102PW
€2.618
Each (In a Pack of 5)
units
6 10 mA 180 MHz, 250 MHz Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 4.5mm 3.1mm 1.05mm 2.7 V, 3.6 V +85 °C 180 MHz, 250 MHz 2.3 V, 3 V
RS Stock No. 124-5340
Mfr. Part No.NB3N551MNR4G
Brandonsemi
€0.811
Each (On a Reel of 1000)
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. 787-6936
Mfr. Part No.NB3N551MNR4G
Brandonsemi
€1.648
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. 124-5344
Mfr. Part No.NB6N14SMNG
Brandonsemi
€6.574
Each (In a Tube of 123)
units
4 100 mA 2GHz Surface Mount QFN 16 3 x 3 x 0.95mm 3mm 3mm 0.95mm 3.8 V +85 °C - -
RS Stock No. 802-2051
Mfr. Part No.NB6N14SMNG
Brandonsemi
€9.31
Each
units
4 100 mA 2GHz Surface Mount QFN 16 3 x 3 x 0.95mm 3mm 3mm 0.95mm 3.8 V +85 °C - -
RS Stock No. 787-6778
Mfr. Part No.MC100LVEL11DG
Brandonsemi
€4.75
Each
units
4 30 mA 1GHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm +3.8 V +85 °C - ±3 V
RS Stock No. 216-6248
Mfr. Part No.9DB433AGLF
€3.418
Each (In a Pack of 5)
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- 170 mA 166MHz - TSSOP-28 28 - - - - - - - -
RS Stock No. 787-6914
Mfr. Part No.NB3L553DG
Brandonsemi
€2.135
Each (In a Pack of 2)
units
4 30 mA 200MHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.25 V +85 °C 200MHz 2.375 V
RS Stock No. 787-6970
Mfr. Part No.NB7VQ14MMNG
Brandonsemi
€9.09
Each
units
8 210 mA 8GHz Surface Mount QFN 16 3 x 3 x 0.95mm 3mm 3mm 0.95mm 3.6 V +85 °C - 1.71 V
RS Stock No. 759-0254
Mfr. Part No.ADF4158CCPZ
€9.97
Each
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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
New
RS Stock No. 217-7814
Mfr. Part No.2305-1DCG
€0.791
Each (In a Pack of 10)
units
6 32 mA 133MHz Surface Mount SOIC 8 - - - - - - - -
RS Stock No. 194-9025
Mfr. Part No.CY2309SXC-1
€3.219
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. 194-9001
Mfr. Part No.CY2304SXC-1
€6.643
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 +70 °C 133.3MHz 3 V
RS Stock No. 177-9647
Mfr. Part No.PL133-37TC
BrandMicrochip
€0.259
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. 865-2404
Mfr. Part No.SI53108-A01AGM
€2.846
Each (In a Pack of 5)
units
- - - - - - - - - - - - - -
RS Stock No. 194-9026
Mfr. Part No.CY2309SXC-1
€3.275
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
RS Stock No. 194-9023
Mfr. Part No.CY2309NZSXI-1H
€11.479
Each (In a Tube of 48)
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