Clock Multiplexers and Fanout Multiplexers (MUX)
IDT multiplexers allow the selection from multiple clock inputs to drive the output. Devices are available with fanout capability, providing multiple copies of the output signal. Some devices have integrated crystal oscillators, requiring only low cost external fundamental-mode quartz crystals. The integrated oscillators provide an extremely low phase noise reference clock to drive jitter sensitive devices such as the clock inputs of PHYs. Others are available that can translate the input clock from one signaling level to another (e.g. LVCMOS-in to LVPECL-out).
IDT’s “8” series of multiplexers feature fully differential internal architecture, even devices with single-ended I/Os. This improves jitter due to inherent common-mode noise rejection and improves output skew. The differential circuitry is constant current and therefore injects less noise into system power supplies than single-ended solutions, reducing noise and decreasing EMI compliance concerns.
The IDT multiplexer portfolio includes devices with up to 16 inputs. Differential outputs such as LVPECL, LVDS, HCSL, CML, HSTL, as well as selectable outputs, are supported for output frequencies up to 3.2 GHz and single-ended LVCMOS outputs for frequencies up to 350 MHz. IDT’s multiplexer portfolio has devices supporting supply voltages from 1.2 V up to 5 V and that are available in the commercial and industrial temperature ranges. Multiplexers are general-purpose clock building block devices that can be used in any number of applications. They are ideal for clock and signal distribution in a large variety of systems, from personal computers to consumer electronics or industrial systems, as well as high-performance networking and communications systems.
Parametric Search
| Part Number | Outputs (#) | Output Type | Output Freq Range (MHz) | Input Freq (MHz) | Inputs (#) | Input Signal | Output Banks (#) | Core Voltage (V) | Output Voltage (V) | Output Skew (ps) | Additive Phase Jitter RMS (ps) |
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