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. 802-2051
Mfr. Part No.NB6N14SMNG
Brandonsemi
kr 175,77
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. 802-2039
Mfr. Part No.NB6L14SMNG
Brandonsemi
kr 92,71
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. 802-2067
Mfr. Part No.NB7L572MNG
Brandonsemi
kr 211,45
Each
Units
2 110 mA 8GHz Surface Mount QFN 32 5 x 5 x 0.95mm 5mm 5mm 0.95mm 3.6 V +85 °C - 2.375 V
RS Stock No. 194-9006
Mfr. Part No.CY2304SXI-2
kr 118,29
Each
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 +85 °C 133.3MHz 3 V
RS Stock No. 194-8997
Mfr. Part No.CY2302SXI-1
kr 31,605
Each (In a Tube of 97)
Units
1 50 mA 133MHz Surface Mount SOIC 8 4.97 x 3.98 x 1.47mm 4.97mm 3.98mm 1.47mm 5 V +85 °C 133MHz -
New
RS Stock No. 248-6261
Mfr. Part No.9ZXL0652EKILF
kr 56,31
Each (In a Pack of 2)
Units
- 37 mA 100MHz Surface Mount VFQFPN 40 - - - - - - - -
RS Stock No. 194-8998
Mfr. Part No.CY2302SXI-1
kr 78,09
Each (In a Pack of 2)
Units
1 50 mA 133MHz Surface Mount SOIC 8 4.97 x 3.98 x 1.47mm 4.97mm 3.98mm 1.47mm 5 V +85 °C 133MHz -
RS Stock No. 235-8718
Mfr. Part No.9DBV0441AKILF
kr 40,65
Each (In a Pack of 2)
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- 35 mA 65MHz Surface Mount VFQFPN 32 5.00 x 5.00 x 0.90mm 5mm 5mm 0.9mm 1.9 V 85 °C 137.5MHz 1.7 V
RS Stock No. 194-9015
Mfr. Part No.CY2308SXI-1H
kr 37,333
Each (In a Tube of 48)
Units
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
RS Stock No. 817-5941
Mfr. Part No.CDCLVC1104PW
kr 57,858
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. 216-6252
Mfr. Part No.9DB833AGILF
kr 69,295
Each (In a Pack of 2)
Units
- 170 mA 166MHz - TSSOP-48 48 - - - - - - - -
RS Stock No. 177-9647
Mfr. Part No.PL133-37TC
BrandMicrochip
kr 2,635
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
New
RS Stock No. 248-6272
Mfr. Part No.9ZXL0852EKILF
kr 38,102
Each (In a Tray of 490)
Units
- 37 mA 100MHz Surface Mount VFQFPN 48 - - - - - - - -
RS Stock No. 126-4892
Mfr. Part No.Si53342-B-GM
kr 36,114
Each (In a Pack of 5)
Units
6 80 mA 200MHz Surface Mount QFN 24 4 x 4 x 0.85mm 4mm 4mm 0.85mm 3.63 V +85 °C 1250MHz 2.97 V
New
RS Stock No. 249-4376
Mfr. Part No.5T30553DCG
kr 55,34
Each (In a Pack of 2)
Units
4 25 mA 200MHz Surface Mount SOIC 8 - - - - - - - -
RS Stock No. 194-9004
Mfr. Part No.CY2304SXI-1
kr 142,01
Each
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 +85 °C 133.3MHz 3 V
New
RS Stock No. 248-6258
Mfr. Part No.9ZXL0651EKILF
kr 54,625
Each (In a Pack of 2)
Units
- 37 mA 100MHz Surface Mount VFQFPN 40 - - - - - - - -
RS Stock No. 194-9016
Mfr. Part No.CY2308SXI-1H
kr 92,16
Each
Units
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
RS Stock No. 193-8450
Mfr. Part No.CY2305SXI-1
kr 30,934
Each (In a Pack of 5)
Units
8 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 133MHz 3 V
RS Stock No. 216-6248
Mfr. Part No.9DB433AGLF
kr 49,648
Each (In a Pack of 5)
Units
- 170 mA 166MHz - TSSOP-28 28 - - - - - - - -