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. 787-6927
Mfr. Part No.NB3N2304NZDTG
€1.775
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. 121-6394
Mfr. Part No.NB3N2304NZDTG
€1.277
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. 145-6448
Mfr. Part No.CDCLVC1102PW
€1.82
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. 787-6936
Mfr. Part No.NB3N551MNR4G
€1.588
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. 124-5340
Mfr. Part No.NB3N551MNR4G
€0.78
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. 802-2051
Mfr. Part No.NB6N14SMNG
€8.05
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. 124-5344
Mfr. Part No.NB6N14SMNG
€6.016
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. 817-5947
Mfr. Part No.CDCLVC1102PW
€2.464
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. 787-6841
Mfr. Part No.MC10EP11DG
€3.07
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. 177-9748
Mfr. Part No.SY54020ARMG
BrandMicrochip
€4.96
Each (In a Pack of 2)
units
6 56 mA 3.2GHz Surface Mount MLF 16 3 x 3 x 0.8mm 3mm 3mm 0.8mm 2.62 V +85 °C - 2.37 V
RS Stock No. 802-2039
Mfr. Part No.NB6L14SMNG
€5.05
Each (In a Pack of 2)
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. 194-8992
Mfr. Part No.CY22394FXI
€8.55
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 +85 °C 166MHz 3.13 V
RS Stock No. 168-9987
Mfr. Part No.SI53159-A01AGM
€2.43
Each (In a Tray of 490)
units
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
RS Stock No. 194-9029
Mfr. Part No.CY2309SXI-1
€14.613
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
RS Stock No. 194-9019
Mfr. Part No.CY2308ZXI-1H
€10.274
Each (In a Tube of 96)
units
1 70 mA 133.3MHz 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. 194-9043
Mfr. Part No.CY23S05SXC-1H
€7.545
Each (In a Tube of 97)
units
1 32 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 133.33MHz 3 V
RS Stock No. 787-6772
Mfr. Part No.MC100LVEL11DTG
€4.35
Each
units
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
RS Stock No. 121-6383
Mfr. Part No.MC100EL11DG
€3.696
Each (In a Tube of 98)
units
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
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RS Stock No. 216-6261
Mfr. Part No.9DBL0851BKILF
€3.48
Each (In a Pack of 2)
units
- 25 mA 200MHz - VFQFPN 48 - - - - - - - -
RS Stock No. 194-9035
Mfr. Part No.CY23EP05SXC-1
€8.044
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