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. 177-9646
Mfr. Part No.PL123-02NGI
BrandMicrochip
kr 22,466
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. 194-9021
Mfr. Part No.CY2309NZSXC-1H
kr 113,685
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. 802-1982
Mfr. Part No.NB2304AI2DG
kr 9,332
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. 177-9647
Mfr. Part No.PL133-37TC
BrandMicrochip
kr 2,889
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. 787-6924
Mfr. Part No.NB3N551DG
kr 16,145
Each (In a Pack of 2)
Units
4 40 mA 180MHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C 180MHz 3 V
RS Stock No. 796-0448
Mfr. Part No.Si53159-A01AGM
kr 32,83
Each (In a Pack of 2)
Units
9 60 mA 210MHz Surface Mount QFN 48 6 x 6 x 0.75mm 5mm 6mm 0.75mm 3.465 V +85 °C - 3.135 V
RS Stock No. 787-6927
Mfr. Part No.NB3N2304NZDTG
kr 19,295
Each (In a Pack of 2)
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. 177-9748
Mfr. Part No.SY54020ARMG
BrandMicrochip
kr 53,92
Each (In a Pack of 2)
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. 121-6390
Mfr. Part No.MC10EP11DG
kr 31,97
Each (In a Tube of 98)
Units
4 -40 mA 3GHz Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm +5.5 V +85 °C - -3 V
RS Stock No. 194-8987
Mfr. Part No.CY22392FXI
kr 129,551
Each (In a Tube of 96)
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. 194-8993
Mfr. Part No.CY2292FXC
kr 51,402
Each (In a Tube of 48)
Units
3 65 (Typ.) mA 30MHz Surface Mount SOIC 16 9.98 x 3.98 x 1.47mm 9.98mm 3.98mm 1.47mm 3.6 V +70 °C 66.6MHz 3 V
New
RS Stock No. 216-6242
Mfr. Part No.9DB403DGLFT
kr 16,638
Each (On a Reel of 2000)
Units
- 115 mA 400MHz - TSSOP-28 28 - - - - - - - -
RS Stock No. 194-9036
Mfr. Part No.CY23EP05SXC-1
kr 99,15
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. 145-4073
Mfr. Part No.NB2305AI1DR2G
kr 4,576
Each (On a Reel of 2500)
Units
1 50 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. 216-6251
Mfr. Part No.9DB833AGILF
kr 42,419
Each (In a Tube of 39)
Units
- 170 mA 166MHz - TSSOP-48 48 - - - - - - - -
RS Stock No. 162-8134
Mfr. Part No.CDCLVC1112PW
kr 51,748
Each (In a Tube of 60)
Units
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
RS Stock No. 911-2925
Mfr. Part No.SY89835UMG-TR
BrandMicrochip
kr 34,515
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
New
RS Stock No. 216-6133
Mfr. Part No.2305-1DCG8
kr 3,925
Each (On a Reel of 3000)
Units
- 32 mA 133MHz - SOIC-8 8 - - - - - - - -
RS Stock No. 900-8766
Mfr. Part No.NB3U1548CDG
kr 23,34
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. 169-0095
Mfr. Part No.SI53108-A01AGM
kr 24,366
Each (In a Tray of 490)
Units
- 90 mA 150MHz Surface Mount QFN 48 6 x 6 x 0.9mm 6mm 6mm 0.9mm 3.465 V +85 °C 133MHz 3.135 V