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 fabricantADCLK925BCPZ-WP
9,45 €
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3 97 mA - Surface Mount LFCSP VQ 16 3 x 3 x 0.9mm 3mm 3mm 0.9mm 3.63 V +125 °C 7.5GHz 2.375 V
N° de stock RS 787-6807
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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 121-6388
Référence fabricantMC100LVEL11DTG
3,197 €
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4 30 mA 1GHz Surface Mount TSSOP 8 3.1 x 3.1 x 0.9mm 3.1mm 3.1mm 0.9mm +3.8 V +85 °C - -3 V
N° de stock RS 911-2925
Référence fabricantSY89835UMG-TR
MarqueMicrochip
3,175 €
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3 70 mA 3GHz Surface Mount MLF 8 2 x 2 x 0.8mm 2mm 2mm 0.8mm 2.63 V +85 °C - 2.37 V
N° de stock RS 194-9002
Référence fabricantCY2304SXC-1
6,40 €
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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 177-9646
Référence fabricantPL123-02NGI
MarqueMicrochip
2,067 €
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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
N° de stock RS 194-8988
Référence fabricantCY22392FXI
13,53 €
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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 +85 °C 166MHz 3.13 V
N° de stock RS 145-4073
Référence fabricantNB2305AI1DR2G
0,43 €
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1 50 mA 133MHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 3.6 V +85 °C 133.3MHz 3 V
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N° de stock RS 217-7839
Référence fabricant524SDCGI
2,026 €
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5 22 mA 200MHz Surface Mount SOIC 8 - - - - - - - -
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N° de stock RS 217-7827
Référence fabricant501MILFT
0,92 €
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1 20 mA 50MHz Surface Mount SOIC 8 - - - - - - - -
N° de stock RS 802-2051
Référence fabricantNB6N14SMNG
8,05 €
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4 100 mA 2GHz Surface Mount QFN 16 3 x 3 x 0.95mm 3mm 3mm 0.95mm 3.8 V +85 °C - -
N° de stock RS 194-8985
Référence fabricantCY22392FXC
10,718 €
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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
N° de stock RS 787-6879
Référence fabricantNB2305AI1DR2G
1,078 €
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1 50 mA 133MHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 3.6 V +85 °C 133.3MHz 3 V
N° de stock RS 194-9018
Référence fabricantCY2308SXI-2
6,94 €
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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
N° de stock RS 169-0095
Référence fabricantSI53108-A01AGM
MarqueSilicon Labs
2,241 €
Each (In a Tray of 490)
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- 90 mA 150MHz Surface Mount QFN 48 6 x 6 x 0.9mm 6mm 6mm 0.9mm 3.465 V +85 °C 133MHz 3.135 V
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N° de stock RS 217-7833
Référence fabricant511MILF
2,126 €
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1 8 mA 50MHz Surface Mount SOIC 8 - - - - - - - -
N° de stock RS 194-9015
Référence fabricantCY2308SXI-1H
5,925 €
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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
N° de stock RS 787-6772
Référence fabricantMC100LVEL11DTG
4,35 €
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4 30 mA 1GHz Surface Mount TSSOP 8 3.1 x 3.1 x 0.9mm 3.1mm 3.1mm 0.9mm +3.8 V +85 °C - -3 V
N° de stock RS 121-6383
Référence fabricantMC100EL11DG
3,696 €
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4 31 mA 1.5GHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm +5.7 V +85 °C - -4.2 V
N° de stock RS 796-0448
Référence fabricantSi53159-A01AGM
MarqueSilicon Labs
3,02 €
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9 60 mA 210MHz Surface Mount QFN 48 6 x 6 x 0.75mm 5mm 6mm 0.75mm 3.465 V +85 °C - 3.135 V