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
New
RS Stock No. 217-7828
Mfr. Part No.501MILFT
MYR10.74
Each (In a Pack of 5)
units
1 20 mA 50MHz Surface Mount SOIC 8 - - - - - - - -
RS Stock No. 194-9001
Mfr. Part No.CY2304SXC-1
MYR26.93
Each (In a Tube of 97)
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 +70 °C 133.3MHz 3 V
New
RS Stock No. 216-6262
Mfr. Part No.9DBL411BGLFT
MYR6.834
Each (On a Reel of 3000)
units
- 20 mA 150MHz - TSSOP 20 - - - - - - - -
RS Stock No. 194-9019
Mfr. Part No.CY2308ZXI-1H
MYR49.657
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. 194-9002
Mfr. Part No.CY2304SXC-1
MYR31.22
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 +70 °C 133.3MHz 3 V
RS Stock No. 162-6305
Mfr. Part No.LMV112SD/NOPB
MYR3.527
Each (On a Reel of 1000)
units
2 2.1 mA 40MHz Surface Mount WSON 8 3 x 3 x 0.8mm 3mm 3mm 0.8mm 5 V +85 °C - 2.4 V
RS Stock No. 193-8449
Mfr. Part No.CY2305SXI-1
MYR50.661
Each (In a Tube of 97)
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. 194-8992
Mfr. Part No.CY22394FXI
MYR41.24
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. 802-1982
Mfr. Part No.NB2304AI2DG
MYR4.74
Each (In a Pack of 10)
units
- 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
New
RS Stock No. 216-6254
Mfr. Part No.9DBL0252BKILF
MYR9.053
Each (In a Tray of 490)
units
- 20 mA 175MHz - VFQFPN-24 24 - - - - - - - -
RS Stock No. 194-9036
Mfr. Part No.CY23EP05SXC-1
MYR61.06
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. 194-9027
Mfr. Part No.CY2309SXC-1H
MYR21.818
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. 194-9011
Mfr. Part No.CY2305SXC-1
MYR12.828
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
New
RS Stock No. 217-7813
Mfr. Part No.2305-1DCG
MYR3.61
Each (In a Tube of 97)
units
6 32 mA 133MHz Surface Mount SOIC 8 - - - - - - - -
RS Stock No. 194-9010
Mfr. Part No.CY2305CSXI-1H
MYR30.65
Each
units
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. 787-6970
Mfr. Part No.NB7VQ14MMNG
MYR38.94
Each
units
8 210 mA 8GHz Surface Mount QFN 16 3 x 3 x 0.95mm 3mm 3mm 0.95mm 3.6 V +85 °C - 1.71 V
New
RS Stock No. 216-6243
Mfr. Part No.9DB403DGLFT
MYR15.46
Each (In a Pack of 5)
units
- 115 mA 400MHz - TSSOP-28 28 - - - - - - - -
New
RS Stock No. 216-6259
Mfr. Part No.9DBL0841BKILF
MYR18.355
Each (In a Pack of 2)
units
- 25 mA 200MHz - VFQFPN 48 - - - - - - - -
New
RS Stock No. 217-7872
Mfr. Part No.5PB1110NDGI
MYR13.843
Each (In a Tray of 100)
units
11 27 mA 200MHz Surface Mount SOIC 20 - - - - - - - -
New
RS Stock No. 217-7829
Mfr. Part No.501MLF
MYR6.484
Each (In a Tube of 97)
units
1 20 mA 50MHz Surface Mount SOIC 8 - - - - - - - -