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. 216-6256
Mfr. Part No.9DBL0252BKILFT
MYR6.542
Each (On a Reel of 2500)
units
- 25 mA 175MHz - VFQFPN-24 24 - - - - - - - -
RS Stock No. 173-2732
Mfr. Part No.SI53342-B-GM
MYR7.544
Each (In a Tray of 490)
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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. 217-7812
Mfr. Part No.2305-1DCGI
MYR4.631
Each (In a Pack of 10)
units
6 32 mA 133MHz Surface Mount SOIC 8 - - - - - - - -
New
RS Stock No. 216-6252
Mfr. Part No.9DB833AGILF
MYR23.185
Each (In a Pack of 2)
units
- 170 mA 166MHz - TSSOP-48 48 - - - - - - - -
RS Stock No. 787-6778
Mfr. Part No.MC100LVEL11DG
MYR18.98
Each
units
4 30 mA 1GHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm +3.8 V +85 °C - ±3 V
RS Stock No. 194-8988
Mfr. Part No.CY22392FXI
MYR70.56
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. 162-8133
Mfr. Part No.CDCLVC1108PW
MYR18.53
Each (In a Tube of 90)
units
6 10 mA 180 MHz, 250 MHz Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 5.1mm 4.5mm 1.05mm 2.7 V, 3.6 V +85 °C 180 MHz, 250 MHz 2.3 V, 3 V
New
RS Stock No. 217-7839
Mfr. Part No.524SDCGI
MYR10.689
Each (In a Tube of 97)
units
5 22 mA 200MHz Surface Mount SOIC 8 - - - - - - - -
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
RS Stock No. 162-8983
Mfr. Part No.NB7L1008MMNG
MYR37.87
Each (In a Tube of 74)
units
8 315 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. 802-2067
Mfr. Part No.NB7L572MNG
MYR55.83
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. 194-9032
Mfr. Part No.CY2309SXI-1H
MYR61.54
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
New
RS Stock No. 217-7835
Mfr. Part No.512MILF
MYR14.31
Each (In a Tube of 97)
units
2 9 mA 50MHz Surface Mount SOIC 8 - - - - - - - -
New
RS Stock No. 217-7830
Mfr. Part No.501MLF
MYR7.676
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
RS Stock No. 188-5305
Mfr. Part No.CY22150FZXC
MYR33.012
Each (In a Tube of 96)
units
6 45 mA 133 (Clock)MHz Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 5.1mm 4.5mm 0.95mm 3.46 V +70 °C 200MHz 3.13 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 - - - - - - - -
New
RS Stock No. 216-6158
Mfr. Part No.570AILF
MYR25.466
Each (In a Tube of 97)
units
- 25 mA 170MHz Surface Mount SOIC-8 8 - - - - - - - -
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. 194-9039
Mfr. Part No.CY23EP05SXI-1H
MYR56.683
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 +85 °C 220MHz 3 V