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 Prix 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
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Référence fabricant512MILF
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2 9 mA 50MHz Surface Mount SOIC 8 - - - - - - - -
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Référence fabricantNB3U1548CDG
2,149 €
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1 5 μA 2GHz Surface Mount SOIC 8 5 x 4 x 1.5mm 50mm 4mm 1.5mm 3.3 V +85 °C 160MHz 1.5 V
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N° de stock RS 216-6133
Référence fabricant2305-1DCG8
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- 32 mA 133MHz - SOIC-8 8 - - - - - - - -
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Référence fabricant9DB433AGILF
3,64 €
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- 170 mA 166MHz - TSSOP-28 28 - - - - - - - -
N° de stock RS 787-6927
Référence fabricantNB3N2304NZDTG
1,775 €
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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
N° de stock RS 787-6936
Référence fabricantNB3N551MNR4G
1,588 €
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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
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N° de stock RS 217-7812
Référence fabricant2305-1DCGI
0,878 €
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6 32 mA 133MHz Surface Mount SOIC 8 - - - - - - - -
N° de stock RS 865-2404
Référence fabricantSI53108-A01AGM
MarqueSilicon Labs
2,764 €
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- - - - - - - - - - - - - -
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N° de stock RS 217-7832
Référence fabricant501MLFT
1,456 €
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1 20 mA 50MHz Surface Mount SOIC 8 - - - - - - - -
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N° de stock RS 217-7847
Référence fabricant551SCMGI
1,60 €
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5 18 mA 160MHz Surface Mount SOIC 8 - - - - - - - -
N° de stock RS 194-8994
Référence fabricantCY2292FXC
5,85 €
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3 65 (Typ.) mA 30MHz Surface Mount SOIC 16 9.98 x 3.98 x 1.47mm 9.98mm 3.98mm 1.47mm 3.6 V +70 °C 66.6MHz 3 V
N° de stock RS 194-9001
Référence fabricantCY2304SXC-1
5,57 €
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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
N° de stock RS 189-8677
Référence fabricantMAX2470EUT+T
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2 4.5 mA 500MHz Surface Mount SOT-23 6 3 x 1.75 x 1.3mm 3mm 1.75mm 1.3mm 5.5 V +85 °C - 2.7 V
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5,15 €
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5 30 mA 4GHz Surface Mount TSSOP 16 5.1 x 4.5 x 1.2mm 5.1mm 4.5mm 1.2mm 5.5 V +85 °C - 2.7 V
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N° de stock RS 217-7849
Référence fabricant551SDCGI
1,60 €
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5 18 mA 160MHz Surface Mount SOIC 8 - - - - - - - -
N° de stock RS 162-9382
Référence fabricantMC100LVEP11DG
5,728 €
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4 42 mA 3GHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm +3.8 V +85 °C - -2.375 V
N° de stock RS 194-8995
Référence fabricantCY2292FXI
11,164 €
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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
N° de stock RS 121-9854
Référence fabricantNB3N551DR2G
0,666 €
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- - - Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C - 3 V
N° de stock RS 817-5953
Référence fabricantCDCLVC1108PW
4,27 €
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6 10 mA 180 MHz, 250 MHz Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 5.1mm 4.5mm 1.05mm 2.7 V, 3.6 V +85 °C 180 MHz, 250 MHz 2.3 V, 3 V
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5,54 €
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6 10 mA 180 MHz, 250 MHz Surface Mount TSSOP 24 7.9 x 4.5 x 1.05mm 7.9mm 4.5mm 1.05mm 2.7 V, 3.6 V +85 °C 180 MHz, 250 MHz 2.3 V, 3 V