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. 802-2039
Mfr. Part No.NB6L14SMNG
TWD217.00
Each (In a Pack of 2)
units
4 100 mA 2GHz Surface Mount QFN 16 3 x 3 x 0.95mm 3mm 3mm 0.95mm 3.8 V +85 °C - -
RS Stock No. 162-8976
Mfr. Part No.NB6L14SMNG
TWD162.50
Each (In a Tube of 123)
units
4 100 mA 2GHz Surface Mount QFN 16 3 x 3 x 0.95mm 3mm 3mm 0.95mm 3.8 V +85 °C - -
RS Stock No. 787-6924
Mfr. Part No.NB3N551DG
TWD64.00
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. 787-6933
Mfr. Part No.NB3N551DR2G
TWD58.40
Each (In a Pack of 5)
units
- - - Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C - 3 V
RS Stock No. 170-3519
Mfr. Part No.NB3N551DG
TWD54.30
Each (In a Tube of 98)
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. 121-9854
Mfr. Part No.NB3N551DR2G
TWD26.70
Each (On a Reel of 2500)
units
- - - Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C - 3 V
RS Stock No. 194-9015
Mfr. Part No.CY2308SXI-1H
TWD237.40
Each (In a Tube of 48)
units
1 70 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 133.3MHz 3 V
RS Stock No. 817-5953
Mfr. Part No.CDCLVC1108PW
TWD181.00
Each
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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. 217-7872
Mfr. Part No.5PB1110NDGI
TWD104.60
Each (In a Tray of 100)
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11 27 mA 200MHz Surface Mount SOIC 20 - - - - - - - -
New
RS Stock No. 216-6263
Mfr. Part No.9DBL411BGLFT
TWD104.40
Each (In a Pack of 5)
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- 20 mA 150MHz - TSSOP 20 - - - - - - - -
RS Stock No. 194-9016
Mfr. Part No.CY2308SXI-1H
TWD275.00
Each
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1 70 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 133.3MHz 3 V
New
RS Stock No. 217-7827
Mfr. Part No.501MILFT
TWD36.70
Each (On a Reel of 3000)
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1 20 mA 50MHz Surface Mount SOIC 8 - - - - - - - -
RS Stock No. 194-9040
Mfr. Part No.CY23EP05SXI-1H
TWD534.00
Each
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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
New
RS Stock No. 217-7831
Mfr. Part No.501MLFT
TWD26.30
Each (On a Reel of 3000)
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1 20 mA 50MHz Surface Mount SOIC 8 - - - - - - - -
RS Stock No. 188-5313
Mfr. Part No.CY2305SXI-1H
TWD101.10
Each (In a Tube of 97)
units
9 35 mA 133MHz Surface Mount SOIC 8 4.97 x 3.98 x 1.48mm 4.97mm 3.98mm 1.48mm 3.6 V +85 °C 133.33MHz 3 V
New
RS Stock No. 217-7813
Mfr. Part No.2305-1DCG
TWD27.30
Each (In a Tube of 97)
units
6 32 mA 133MHz Surface Mount SOIC 8 - - - - - - - -
New
RS Stock No. 216-6241
Mfr. Part No.9DB1233AGLF
TWD183.50
Each (In a Pack of 2)
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- 300 mA 166MHz - TSSOP-64 64 - - - - - - - -
RS Stock No. 194-9011
Mfr. Part No.CY2305SXC-1
TWD107.30
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
RS Stock No. 162-8134
Mfr. Part No.CDCLVC1112PW
TWD202.50
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. 807-1700
Mfr. Part No.ADCLK905BCPZ-WP
TWD392.00
Each
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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