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. 194-9025
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. 194-9024
Mfr. Part No.CY2309NZSXI-1H
MYR52.88
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. 177-9646
Mfr. Part No.PL123-02NGI
BrandMicrochip
MYR8.379
Each (In a Bag of 20)
units
3 0.8 mA 200MHz Surface Mount DFN 6 1.35 x 2.05 x 0.55mm 1.35mm 2.05mm 0.55mm 4.6 V +85 °C - -0.5 V
RS Stock No. 194-9017
Mfr. Part No.CY2308SXI-2
MYR30.161
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. 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. 911-2925
Mfr. Part No.SY89835UMG-TR
BrandMicrochip
MYR14.245
Each (In a Pack of 2)
units
3 70 mA 3GHz Surface Mount MLF 8 2 x 2 x 0.8mm 2mm 2mm 0.8mm 2.63 V +85 °C - 2.37 V
RS Stock No. 124-5340
Mfr. Part No.NB3N551MNR4G
MYR3.962
Each (On a Reel of 1000)
units
4 40 mA 180MHz Surface Mount DFN 8 2 x 2 x 0.95mm 2mm 2mm 0.95mm 5.5 V +85 °C 180MHz 3 V
RS Stock No. 900-8766
Mfr. Part No.NB3U1548CDG
MYR23.31
Each (In a Pack of 2)
units
1 5 μA 2GHz Surface Mount SOIC 8 5 x 4 x 1.5mm 50mm 4mm 1.5mm 3.3 V +85 °C 160MHz 1.5 V
RS Stock No. 194-9040
Mfr. Part No.CY23EP05SXI-1H
MYR67.33
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 +85 °C 220MHz 3 V
RS Stock No. 817-5953
Mfr. Part No.CDCLVC1108PW
MYR20.57
Each
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
RS Stock No. 759-0222
Mfr. Part No.ADCLK925BCPZ-WP
MYR56.67
Each
units
3 97 mA - Surface Mount LFCSP VQ 16 3 x 3 x 0.9mm 3mm 3mm 0.9mm 3.63 V +125 °C 7.5GHz 2.375 V
RS Stock No. 124-2935
Mfr. Part No.CY2305SXI-1H
MYR49.389
Each (In a Pack of 10)
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. 787-6716
Mfr. Part No.MC100EL11DG
MYR17.06
Each
units
4 31 mA 1.5GHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm +5.7 V +85 °C - -4.2 V
RS Stock No. 121-6394
Mfr. Part No.NB3N2304NZDTG
MYR5.32
Each (In a Tube of 100)
units
4 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 140MHz 3 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
RS Stock No. 162-8984
Mfr. Part No.NB7L572MNG
MYR49.20
Each (In a Tube of 74)
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. 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. 162-8130
Mfr. Part No.CDCLVC1104PW
MYR11.475
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. 194-9018
Mfr. Part No.CY2308SXI-2
MYR35.13
Each
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. 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