PL586-58DC

Clock Buffers, Drivers Overview

The PL586-58DC is a low phase noise Voltage Controlled Crystal Oscillator (VCXO) IC designed for fundamental mode crystals operating between 150MHz and 160MHz. It features complementary LVPECL outputs, a 3.3V supply voltage, and an integrated variable capacitor. The device achieves a typical pull range of ±100 ppm with less than 5% linearity and integrated jitter below 100fs RMS. Phase noise is optimized at -68dBc/Hz @10Hz and -152dBc/Hz @100kHz for 155.52 MHz applications. The PL586-58 variant includes an internal 60kΩ pull-down resistor on the Output Enable pin, defaulting to enabled state.

Clock Buffers, Drivers Feature Summary

• Low phase noise VCXO optimized for 155.52 MHz with <100fs RMS jitter
• High pull range of ±100 ppm with <5% linearity
• Complementary LVPECL outputs with integrated varicap
• Internal 60kΩ pull-down resistor on OE pin for PL586-58

Clock Buffers, Drivers Applications

• SONET clocking
• WiMax systems
• CPRI interfaces
• OBSAI architectures
• Fiber Channel connections

Clock Buffers, Drivers Procurement Notes

Verify the specific suffix 'DC' corresponds to the Die in Waffle Pack packaging option as defined in the Micrel ordering information. Confirm that the PL586-58 designation matches the required output enable logic, which utilizes an internal pull-down resistor compared to the PL586-55's pull-up configuration. Ensure compatibility with commercial temperature grade specifications ranging from 0°C to 70°C.

Clock Buffers, Drivers Selection Notes

Select the PL586-58 over the PL586-55 when the design requires the Output Enable pin to default to an active state via an internal pull-down resistor. Ensure the application utilizes fundamental mode AT-cut crystals within the 150MHz to 160MHz range. Verify that the crystal motional capacitance (C1) is approximately 5.5 fF to achieve the specified ±100 ppm pulling capability. Confirm power supply stability within the 2.97V to 3.63V range.

Clock Buffers, Drivers Part Context

This component belongs to the PL586-55/-58 family of non-multiplier VCXO ICs originally manufactured by Micrel Inc. The datasheet indicates availability in both Die and Wafer forms. The PL586-58 specifically differs from the PL586-55 in its Output Enable logic polarity and internal biasing resistor type.

Clock Buffers, Drivers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. The PL586-55 serves as a functional alternative only if the opposite Output Enable logic polarity (internal pull-up vs. pull-down) is acceptable for the system design.

Clock Buffers, Drivers FAQ

What is the default state of the Output Enable pin for the PL586-58?

The PL586-58 features an internal 60kΩ pull-down resistor on the OE pin, causing the output buffers to be enabled by default when the pin is unconnected or held low.

What is the maximum recommended motional capacitance for the crystal?

A motional capacitance (C1) of 5.5 fF is recommended to support at least ±100 ppm frequency pulling.

How does the PL586-58 differ from the PL586-55 regarding the OE pin?

The PL586-58 uses an internal 60kΩ pull-down resistor on the OE pin, whereas the PL586-55 uses an internal 60kΩ pull-up resistor.