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. 194-9024
Mfr. Part No.CY2309NZSXI-1H
kr 141,55
Each
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. 194-9025
Mfr. Part No.CY2309SXC-1
kr 32,04
Each (In a Tube of 48)
Units
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. 796-0448
Mfr. Part No.Si53159-A01AGM
kr 34,95
Each (In a Pack of 2)
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. 194-9031
Mfr. Part No.CY2309SXI-1H
kr 76,267
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. 216-6262
Mfr. Part No.9DBL411BGLFT
kr 17,028
Each (On a Reel of 3000)
Units
- 20 mA 150MHz - TSSOP 20 - - - - - - - -
RS Stock No. 216-6244
Mfr. Part No.9DB433AGILF
kr 36,293
Each (In a Tube of 50)
Units
- 170 mA 166MHz - TSSOP-28 28 - - - - - - - -
RS Stock No. 787-6918
Mfr. Part No.NB3L553MNR4G
Brandonsemi
kr 24,245
Each (On a Tape of 2)
Units
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. 194-9026
Mfr. Part No.CY2309SXC-1
kr 32,58
Each (In a Pack of 2)
Units
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. 216-6249
Mfr. Part No.9DB433AGLFT
kr 20,508
Each (On a Reel of 2000)
Units
- 170 mA 166MHz - TSSOP-28 28 - - - - - - - -
RS Stock No. 217-7853
Mfr. Part No.553MLF
kr 25,092
Each (In a Pack of 5)
Units
5 25 mA 200MHz Surface Mount SOIC 8 - - - - - - - -
RS Stock No. 217-7833
Mfr. Part No.511MILF
kr 25,356
Each (In a Tube of 97)
Units
1 8 mA 50MHz Surface Mount SOIC 8 - - - - - - - -
RS Stock No. 194-8996
Mfr. Part No.CY2292FXI
kr 75,56
Each
Units
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
RS Stock No. 216-6158
Mfr. Part No.570AILF
kr 61,773
Each (In a Tube of 97)
Units
- 25 mA 170MHz Surface Mount SOIC-8 8 - - - - - - - -
RS Stock No. 216-6245
Mfr. Part No.9DB433AGILF
kr 42,78
Each (In a Pack of 2)
Units
- 170 mA 166MHz - TSSOP-28 28 - - - - - - - -
RS Stock No. 787-6914
Mfr. Part No.NB3L553DG
Brandonsemi
kr 23,21
Each (In a Pack of 2)
Units
4 30 mA 200MHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.25 V +85 °C 200MHz 2.375 V
RS Stock No. 194-9038
Mfr. Part No.CY23EP05SXC-1H
kr 148,07
Each
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
RS Stock No. 194-9017
Mfr. Part No.CY2308SXI-2
kr 36,922
Each (In a Tube of 48)
Units
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. 216-6265
Mfr. Part No.9DBL411BKILF
kr 31,092
Each (In a Pack of 5)
Units
- 20 mA 150MHz - TSSOP 20 - - - - - - - -
RS Stock No. 194-9032
Mfr. Part No.CY2309SXI-1H
kr 77,51
Each
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. 217-7834
Mfr. Part No.511MILF
kr 29,70
Each (In a Pack of 5)
Units
1 8 mA 50MHz Surface Mount SOIC 8 - - - - - - - -