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. 194-9012
Mfr. Part No.CY2305SXC-1
MYR15.08
Each (In a Pack of 2)
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
RS Stock No. 194-9006
Mfr. Part No.CY2304SXI-2
MYR42.62
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. 145-6448
Mfr. Part No.CDCLVC1102PW
MYR8.876
Each (In a Tube of 150)
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. 802-2064
Mfr. Part No.NB7L1008MMNG
MYR42.63
Each
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. 194-9034
Mfr. Part No.CY2309ZXI-1H
MYR52.87
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. 216-6248
Mfr. Part No.9DB433AGLF
MYR16.70
Each (In a Pack of 5)
units
- 170 mA 166MHz - TSSOP-28 28 - - - - - - - -
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. 194-9025
Mfr. Part No.CY2309SXC-1
MYR26.112
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. 194-9041
Mfr. Part No.CY23EP09ZXI-1H
MYR68.235
Each (In a Tube of 96)
units
1 30 mA, 45 mA 220MHz Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 5.1mm 4.5mm 0.95mm 3.6 V +85 °C 220MHz 3 V
RS Stock No. 162-8134
Mfr. Part No.CDCLVC1112PW
MYR23.295
Each (In a Tube of 60)
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6 10 mA 180 MHz, 250 MHz Surface Mount TSSOP 24 7.9 x 4.5 x 1.05mm 7.9mm 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. 216-6243
Mfr. Part No.9DB403DGLFT
MYR15.46
Each (In a Pack of 5)
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- 115 mA 400MHz - TSSOP-28 28 - - - - - - - -
RS Stock No. 177-9671
Mfr. Part No.SY54020ARMG
BrandMicrochip
MYR22.40
Each (In a Tube of 100)
units
6 56 mA 3.2GHz Surface Mount MLF 16 3 x 3 x 0.8mm 3mm 3mm 0.8mm 2.62 V +85 °C - 2.37 V
RS Stock No. 759-1566
Mfr. Part No.ADF4113HVBRUZ
MYR25.67
Each
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5 30 mA 4GHz Surface Mount TSSOP 16 5.1 x 4.5 x 1.2mm 5.1mm 4.5mm 1.2mm 5.5 V +85 °C - 2.7 V
New
RS Stock No. 216-6240
Mfr. Part No.9DB1233AGLF
MYR20.385
Each (In a Tube of 28)
units
- 300 mA 166MHz - TSSOP-64 64 - - - - - - - -
RS Stock No. 787-6772
Mfr. Part No.MC100LVEL11DTG
MYR18.98
Each
units
4 30 mA 1GHz Surface Mount TSSOP 8 3.1 x 3.1 x 0.9mm 3.1mm 3.1mm 0.9mm +3.8 V +85 °C - -3 V
RS Stock No. 188-5306
Mfr. Part No.CY22150KFZXC
MYR32.526
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
RS Stock No. 177-9647
Mfr. Part No.PL133-37TC
BrandMicrochip
MYR2.16
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
RS Stock No. 173-2732
Mfr. Part No.SI53342-B-GM
MYR7.544
Each (In a Tray of 490)
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
RS Stock No. 194-8986
Mfr. Part No.CY22392FXC
MYR58.76
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 +70 °C 166MHz 3.13 V
RS Stock No. 194-8999
Mfr. Part No.CY2304NZZXI-1
MYR37.383
Each (In a Tube of 162)
units
1 25 mA 140MHz Surface Mount TSSOP 8 3.1 x 4.5 x 0.95mm 3.1mm 4.5mm 0.95mm 3.6 V +85 °C 66.66MHz 3 V