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. 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. 194-9035
Mfr. Part No.CY23EP05SXC-1
MYR46.767
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 +70 °C 220MHz 3 V
RS Stock No. 194-8984
Mfr. Part No.CY22381FXC
MYR58.76
Each
units
3 70 (Typ.) mA 166MHz Surface Mount SOIC 8 4.97 x 3.98 x 1.47mm 4.97mm 3.98mm 1.47mm 3.46 V +70 °C 200MHz 3.13 V
RS Stock No. 194-9005
Mfr. Part No.CY2304SXI-2
MYR36.74
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 +85 °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. 759-1547
Mfr. Part No.ADCLK914BCPZ-R2
MYR70.23
1 Tape of 1
Tape(s)
2 73 mA - Surface Mount LFCSP VQ 16 3 x 3 x 0.9mm 3mm 3mm 0.9mm 3.63 V +125 °C 7.5GHz 2.97 V
RS Stock No. 194-9004
Mfr. Part No.CY2304SXI-1
MYR53.08
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. 194-9029
Mfr. Part No.CY2309SXI-1
MYR73.287
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. 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. 194-9031
Mfr. Part No.CY2309SXI-1H
MYR54.233
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. 121-6388
Mfr. Part No.MC100LVEL11DTG
MYR16.006
Each (In a Tube of 100)
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. 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. 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
RS Stock No. 194-8981
Mfr. Part No.CY22150FZXI
MYR41.64
Each (In a Tube of 96)
units
1 45 (Typ.) mA 133MHz Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 5.1mm 4.5mm 0.95mm 3.46 V +85 °C 166.6MHz 3.13 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. 817-5947
Mfr. Part No.CDCLVC1102PW
MYR10.646
Each (In a Pack of 5)
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. 162-9382
Mfr. Part No.MC100LVEP11DG
MYR25.19
Each (In a Tube of 98)
units
4 42 mA 3GHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm +3.8 V +85 °C - -2.375 V
RS Stock No. 807-1700
Mfr. Part No.ADCLK905BCPZ-WP
MYR44.50
Each
units
1 63 mA - Surface Mount LFCSP 16 3 x 2.75 x 0.85mm 3mm 2.75mm 0.85mm 3.63 V +125 °C - 2.375 V
RS Stock No. 194-9028
Mfr. Part No.CY2309SXC-1H
MYR25.345
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. 194-9043
Mfr. Part No.CY23S05SXC-1H
MYR36.407
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