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. 802-2039
Mfr. Part No.NB6L14SMNG
TWD198.50
Each (In a Pack of 2)
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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 - -
RS Stock No. 162-8976
Mfr. Part No.NB6L14SMNG
TWD145.70
Each (In a Tube of 123)
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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 - -
RS Stock No. 121-9854
Mfr. Part No.NB3N551DR2G
TWD25.60
Each (On a Reel of 2500)
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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
RS Stock No. 787-6924
Mfr. Part No.NB3N551DG
TWD58.50
Each (In a Pack of 2)
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4 40 mA 180MHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C 180MHz 3 V
RS Stock No. 787-6933
Mfr. Part No.NB3N551DR2G
TWD53.80
Each (In a Pack of 5)
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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
RS Stock No. 170-3519
Mfr. Part No.NB3N551DG
TWD49.90
Each (In a Tube of 98)
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4 40 mA 180MHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C 180MHz 3 V
RS Stock No. 802-1982
Mfr. Part No.NB2304AI2DG
TWD40.50
Each (In a Pack of 10)
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- 45 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
RS Stock No. 188-5313
Mfr. Part No.CY2305SXI-1H
TWD98.50
Each (In a Tube of 97)
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9 35 mA 133MHz Surface Mount SOIC 8 4.97 x 3.98 x 1.48mm 4.97mm 3.98mm 1.48mm 3.6 V +85 °C 133.33MHz 3 V
RS Stock No. 900-8766
Mfr. Part No.NB3U1548CDG
TWD189.50
Each (In a Pack of 2)
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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
RS Stock No. 911-2925
Mfr. Part No.SY89835UMG-TR
BrandMicrochip
TWD100.00
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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
RS Stock No. 145-4073
Mfr. Part No.NB2305AI1DR2G
TWD17.20
Each (On a Reel of 2500)
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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
RS Stock No. 194-9002
Mfr. Part No.CY2304SXC-1
TWD254.00
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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
RS Stock No. 194-9027
Mfr. Part No.CY2309SXC-1H
TWD171.00
Each (In a Tube of 48)
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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. 162-9457
Mfr. Part No.NB3L553MNR4G
TWD39.90
Each (On a Reel of 1000)
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4 30 mA 200MHz Surface Mount DFN 8 2 x 2 x 0.95mm 2mm 2mm 0.95mm 5.25 V +85 °C 200MHz 2.375 V
RS Stock No. 802-2051
Mfr. Part No.NB6N14SMNG
TWD316.00
Each
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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 - -
RS Stock No. 194-9008
Mfr. Part No.CY2305CSXI-1
TWD192.00
Each (In a Pack of 2)
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1 35 mA 133MHz Surface Mount SOIC 8 4.97 x 3.98 x 1.47mm 4.97mm 3.98mm 1.47mm 3.6 V +85 °C 133.33MHz 3 V
RS Stock No. 194-8992
Mfr. Part No.CY22394FXI
TWD336.00
Each
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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
RS Stock No. 194-9013
Mfr. Part No.CY2308SXI-1
TWD237.20
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. 194-9007
Mfr. Part No.CY2305CSXI-1
TWD165.40
Each (In a Tube of 97)
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1 35 mA 133MHz Surface Mount SOIC 8 4.97 x 3.98 x 1.47mm 4.97mm 3.98mm 1.47mm 3.6 V +85 °C 133.33MHz 3 V
RS Stock No. 194-8995
Mfr. Part No.CY2292FXI
TWD430.20
Each (In a Tube of 48)
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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